#define IS_POKEMON_C

#include "global.h"
#include "gflib.h"
#include "random.h"
#include "rtc.h"
#include "text.h"
#include "data.h"
#include "battle.h"
#include "battle_anim.h"
#include "item.h"
#include "event_data.h"
#include "util.h"
#include "pokemon_storage_system.h"
#include "battle_gfx_sfx_util.h"
#include "battle_controllers.h"
#include "evolution_scene.h"
#include "field_weather.h"
#include "battle_message.h"
#include "battle_util.h"
#include "link.h"
#include "pokemon_animation.h"
#include "m4a.h"
#include "pokedex.h"
#include "strings.h"
#include "overworld.h"
#include "party_menu.h"
#include "pokemon_icon.h"
#include "field_specials.h"
#include "berry.h"
#include "constants/items.h"
#include "constants/item_effects.h"
#include "constants/cries.h"
#include "constants/form_change_types.h"
#include "constants/pokemon.h"
#include "constants/abilities.h"
#include "constants/layouts.h"
#include "constants/moves.h"
#include "constants/songs.h"
#include "constants/item_effects.h"
#include "constants/trainers.h"
#include "constants/hold_effects.h"
#include "constants/battle_move_effects.h"
#include "constants/union_room.h"
#include "constants/weather.h"

#define FRIENDSHIP_EVO_THRESHOLD ((P_FRIENDSHIP_EVO_THRESHOLD >= GEN_9) ? 160 : 220)

struct SpeciesItem
{
    u16 species;
    u16 item;
};

static EWRAM_DATA u8 sLearningMoveTableID = 0;
EWRAM_DATA u8 gPlayerPartyCount = 0;
EWRAM_DATA u8 gEnemyPartyCount = 0;
EWRAM_DATA struct Pokemon gEnemyParty[PARTY_SIZE] = {};
EWRAM_DATA struct Pokemon gPlayerParty[PARTY_SIZE] = {};
EWRAM_DATA struct SpriteTemplate gMultiuseSpriteTemplate = {0};
static EWRAM_DATA struct MonSpritesGfxManager *sMonSpritesGfxManager = NULL;

static union PokemonSubstruct *GetSubstruct(struct BoxPokemon *boxMon, u32 personality, u8 substructType);
static bool8 PartyMonHasStatus(struct Pokemon *mon, u32 unused, u32 healMask, u8 battleId);
static bool8 IsPokemonStorageFull(void);
static u8 CopyMonToPC(struct Pokemon *mon);
static void EncryptBoxMon(struct BoxPokemon *boxMon);
static void DeleteFirstMoveAndGiveMoveToBoxMon(struct BoxPokemon *boxMon, u16 move);
static void GiveBoxMonInitialMoveset(struct BoxPokemon *boxMon);
static u16 GiveMoveToBoxMon(struct BoxPokemon *boxMon, u16 move);
static u8 GetLevelFromMonExp(struct Pokemon *mon);
static u16 CalculateBoxMonChecksum(struct BoxPokemon *boxMon);
static bool8 ShouldSkipFriendshipChange(void);
static void RemoveIVIndexFromList(u8 *ivs, u8 selectedIv);

#include "data/moves_info.h"
#include "data/abilities.h"

// NOTE: The order of the elements in the 3 arrays below is irrelevant.
// To reorder the pokedex, see the values in include/constants/pokedex.h.

 // Assigns all species to the Hoenn Dex Index (Summary No. for Hoenn Dex)
 // removed:
 // static const u16 sKantoToNationalOrder[NUM_SPECIES - 1] =


 // Assigns all species to the National Dex Index (Summary No. for National Dex)
 // removed:
 //static const u16 sSpeciesToNationalPokedexNum[NUM_SPECIES - 1] =

#define HOENN_TO_NATIONAL(name)     [HOENN_DEX_##name - 1] = NATIONAL_DEX_##name
#define KANTO_TO_NATIONAL(name)     [KANTO_DEX_##name - 1] = NATIONAL_DEX_##name

static const u16 sKantoToNationalOrder[NUM_SPECIES - 1] =
{
    // Kanto
    KANTO_TO_NATIONAL(BULBASAUR),
    KANTO_TO_NATIONAL(IVYSAUR),
    KANTO_TO_NATIONAL(VENUSAUR),
    KANTO_TO_NATIONAL(CHARMANDER),
    KANTO_TO_NATIONAL(CHARMELEON),
    KANTO_TO_NATIONAL(CHARIZARD),
    KANTO_TO_NATIONAL(SQUIRTLE),
    KANTO_TO_NATIONAL(WARTORTLE),
    KANTO_TO_NATIONAL(BLASTOISE),
    KANTO_TO_NATIONAL(CATERPIE),
    KANTO_TO_NATIONAL(METAPOD),
    KANTO_TO_NATIONAL(BUTTERFREE),
    KANTO_TO_NATIONAL(WEEDLE),
    KANTO_TO_NATIONAL(KAKUNA),
    KANTO_TO_NATIONAL(BEEDRILL),
    KANTO_TO_NATIONAL(PIDGEY),
    KANTO_TO_NATIONAL(PIDGEOTTO),
    KANTO_TO_NATIONAL(PIDGEOT),
    KANTO_TO_NATIONAL(RATTATA),
    KANTO_TO_NATIONAL(RATICATE),
    KANTO_TO_NATIONAL(SPEAROW),
    KANTO_TO_NATIONAL(FEAROW),
    KANTO_TO_NATIONAL(EKANS),
    KANTO_TO_NATIONAL(ARBOK),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(PICHU),
#endif
    KANTO_TO_NATIONAL(PIKACHU),
    KANTO_TO_NATIONAL(RAICHU),
    KANTO_TO_NATIONAL(SANDSHREW),
    KANTO_TO_NATIONAL(SANDSLASH),
    KANTO_TO_NATIONAL(NIDORAN_F),
    KANTO_TO_NATIONAL(NIDORINA),
    KANTO_TO_NATIONAL(NIDOQUEEN),
    KANTO_TO_NATIONAL(NIDORAN_M),
    KANTO_TO_NATIONAL(NIDORINO),
    KANTO_TO_NATIONAL(NIDOKING),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(CLEFFA),
#endif
    KANTO_TO_NATIONAL(CLEFAIRY),
    KANTO_TO_NATIONAL(CLEFABLE),
    KANTO_TO_NATIONAL(VULPIX),
    KANTO_TO_NATIONAL(NINETALES),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(IGGLYBUFF),
#endif
    KANTO_TO_NATIONAL(JIGGLYPUFF),
    KANTO_TO_NATIONAL(WIGGLYTUFF),
    KANTO_TO_NATIONAL(ZUBAT),
    KANTO_TO_NATIONAL(GOLBAT),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(CROBAT),
#endif
    KANTO_TO_NATIONAL(ODDISH),
    KANTO_TO_NATIONAL(GLOOM),
    KANTO_TO_NATIONAL(VILEPLUME),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(BELLOSSOM),
#endif
    KANTO_TO_NATIONAL(PARAS),
    KANTO_TO_NATIONAL(PARASECT),
    KANTO_TO_NATIONAL(VENONAT),
    KANTO_TO_NATIONAL(VENOMOTH),
    KANTO_TO_NATIONAL(DIGLETT),
    KANTO_TO_NATIONAL(DUGTRIO),
    KANTO_TO_NATIONAL(MEOWTH),
    KANTO_TO_NATIONAL(PERSIAN),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GALARIAN_FORMS
    KANTO_TO_NATIONAL(PERRSERKER),
#endif
    KANTO_TO_NATIONAL(PSYDUCK),
    KANTO_TO_NATIONAL(GOLDUCK),
    KANTO_TO_NATIONAL(MANKEY),
    KANTO_TO_NATIONAL(PRIMEAPE),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_9_CROSS_EVOS
    KANTO_TO_NATIONAL(ANNIHILAPE),
#endif
    KANTO_TO_NATIONAL(GROWLITHE),
    KANTO_TO_NATIONAL(ARCANINE),
    KANTO_TO_NATIONAL(POLIWAG),
    KANTO_TO_NATIONAL(POLIWHIRL),
    KANTO_TO_NATIONAL(POLIWRATH),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(POLITOED),
#endif
    KANTO_TO_NATIONAL(ABRA),
    KANTO_TO_NATIONAL(KADABRA),
    KANTO_TO_NATIONAL(ALAKAZAM),
    KANTO_TO_NATIONAL(MACHOP),
    KANTO_TO_NATIONAL(MACHOKE),
    KANTO_TO_NATIONAL(MACHAMP),
    KANTO_TO_NATIONAL(BELLSPROUT),
    KANTO_TO_NATIONAL(WEEPINBELL),
    KANTO_TO_NATIONAL(VICTREEBEL),
    KANTO_TO_NATIONAL(TENTACOOL),
    KANTO_TO_NATIONAL(TENTACRUEL),
    KANTO_TO_NATIONAL(GEODUDE),
    KANTO_TO_NATIONAL(GRAVELER),
    KANTO_TO_NATIONAL(GOLEM),
    KANTO_TO_NATIONAL(PONYTA),
    KANTO_TO_NATIONAL(RAPIDASH),
    KANTO_TO_NATIONAL(SLOWPOKE),
    KANTO_TO_NATIONAL(SLOWBRO),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(SLOWKING),
#endif
    KANTO_TO_NATIONAL(MAGNEMITE),
    KANTO_TO_NATIONAL(MAGNETON),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(MAGNEZONE),
#endif
    KANTO_TO_NATIONAL(FARFETCHD),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GALARIAN_FORMS
    KANTO_TO_NATIONAL(SIRFETCHD),
#endif
    KANTO_TO_NATIONAL(DODUO),
    KANTO_TO_NATIONAL(DODRIO),
    KANTO_TO_NATIONAL(SEEL),
    KANTO_TO_NATIONAL(DEWGONG),
    KANTO_TO_NATIONAL(GRIMER),
    KANTO_TO_NATIONAL(MUK),
    KANTO_TO_NATIONAL(SHELLDER),
    KANTO_TO_NATIONAL(CLOYSTER),
    KANTO_TO_NATIONAL(GASTLY),
    KANTO_TO_NATIONAL(HAUNTER),
    KANTO_TO_NATIONAL(GENGAR),
    KANTO_TO_NATIONAL(ONIX),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(STEELIX),
#endif
    KANTO_TO_NATIONAL(DROWZEE),
    KANTO_TO_NATIONAL(HYPNO),
    KANTO_TO_NATIONAL(KRABBY),
    KANTO_TO_NATIONAL(KINGLER),
    KANTO_TO_NATIONAL(VOLTORB),
    KANTO_TO_NATIONAL(ELECTRODE),
    KANTO_TO_NATIONAL(EXEGGCUTE),
    KANTO_TO_NATIONAL(EXEGGUTOR),
    KANTO_TO_NATIONAL(CUBONE),
    KANTO_TO_NATIONAL(MAROWAK),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(TYROGUE),
#endif
    KANTO_TO_NATIONAL(HITMONLEE),
    KANTO_TO_NATIONAL(HITMONCHAN),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(HITMONTOP),
#endif
    KANTO_TO_NATIONAL(LICKITUNG),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(LICKILICKY),
#endif
    KANTO_TO_NATIONAL(KOFFING),
    KANTO_TO_NATIONAL(WEEZING),
    KANTO_TO_NATIONAL(RHYHORN),
    KANTO_TO_NATIONAL(RHYDON),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(RHYPERIOR),
    KANTO_TO_NATIONAL(HAPPINY),
#endif
    KANTO_TO_NATIONAL(CHANSEY),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(BLISSEY),
#endif
    KANTO_TO_NATIONAL(TANGELA),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(TANGROWTH),
#endif
    KANTO_TO_NATIONAL(KANGASKHAN),
    KANTO_TO_NATIONAL(HORSEA),
    KANTO_TO_NATIONAL(SEADRA),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(KINGDRA),
#endif
    KANTO_TO_NATIONAL(GOLDEEN),
    KANTO_TO_NATIONAL(SEAKING),
    KANTO_TO_NATIONAL(STARYU),
    KANTO_TO_NATIONAL(STARMIE),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(MIME_JR),
#endif
    KANTO_TO_NATIONAL(MR_MIME),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GALARIAN_FORMS
    KANTO_TO_NATIONAL(MR_RIME),
#endif
    KANTO_TO_NATIONAL(SCYTHER),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(SCIZOR),
#endif
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_8_CROSS_EVOS
    KANTO_TO_NATIONAL(KLEAVOR),
#endif
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(SMOOCHUM),
#endif
    KANTO_TO_NATIONAL(JYNX),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(ELEKID),
#endif
    KANTO_TO_NATIONAL(ELECTABUZZ),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(ELECTIVIRE),
#endif
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(MAGBY),
#endif
    KANTO_TO_NATIONAL(MAGMAR),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(MAGMORTAR),
#endif
    KANTO_TO_NATIONAL(PINSIR),
    KANTO_TO_NATIONAL(TAUROS),
    KANTO_TO_NATIONAL(MAGIKARP),
    KANTO_TO_NATIONAL(GYARADOS),
    KANTO_TO_NATIONAL(LAPRAS),
    KANTO_TO_NATIONAL(DITTO),
    KANTO_TO_NATIONAL(EEVEE),
    KANTO_TO_NATIONAL(VAPOREON),
    KANTO_TO_NATIONAL(JOLTEON),
    KANTO_TO_NATIONAL(FLAREON),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(ESPEON),
    KANTO_TO_NATIONAL(UMBREON),
#endif
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(LEAFEON),
    KANTO_TO_NATIONAL(GLACEON),
#endif
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_6_CROSS_EVOS
    KANTO_TO_NATIONAL(SYLVEON),
#endif
    KANTO_TO_NATIONAL(PORYGON),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_2_CROSS_EVOS
    KANTO_TO_NATIONAL(PORYGON2),
#endif
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(PORYGON_Z),
#endif
    KANTO_TO_NATIONAL(OMANYTE),
    KANTO_TO_NATIONAL(OMASTAR),
    KANTO_TO_NATIONAL(KABUTO),
    KANTO_TO_NATIONAL(KABUTOPS),
    KANTO_TO_NATIONAL(AERODACTYL),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    KANTO_TO_NATIONAL(MUNCHLAX),
#endif
    KANTO_TO_NATIONAL(SNORLAX),
    KANTO_TO_NATIONAL(ARTICUNO),
    KANTO_TO_NATIONAL(ZAPDOS),
    KANTO_TO_NATIONAL(MOLTRES),
    KANTO_TO_NATIONAL(DRATINI),
    KANTO_TO_NATIONAL(DRAGONAIR),
    KANTO_TO_NATIONAL(DRAGONITE),
    KANTO_TO_NATIONAL(MEWTWO),
    KANTO_TO_NATIONAL(MEW),
};

// Assigns all Hoenn Dex Indexes to a National Dex Index
static const u16 sHoennToNationalOrder[NUM_SPECIES - 1] =
{
HOENN_TO_NATIONAL(TREECKO),
    HOENN_TO_NATIONAL(GROVYLE),
    HOENN_TO_NATIONAL(SCEPTILE),
    HOENN_TO_NATIONAL(TORCHIC),
    HOENN_TO_NATIONAL(COMBUSKEN),
    HOENN_TO_NATIONAL(BLAZIKEN),
    HOENN_TO_NATIONAL(MUDKIP),
    HOENN_TO_NATIONAL(MARSHTOMP),
    HOENN_TO_NATIONAL(SWAMPERT),
    HOENN_TO_NATIONAL(POOCHYENA),
    HOENN_TO_NATIONAL(MIGHTYENA),
    HOENN_TO_NATIONAL(ZIGZAGOON),
    HOENN_TO_NATIONAL(LINOONE),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GALARIAN_FORMS
    HOENN_TO_NATIONAL(OBSTAGOON),
#endif
    HOENN_TO_NATIONAL(WURMPLE),
    HOENN_TO_NATIONAL(SILCOON),
    HOENN_TO_NATIONAL(BEAUTIFLY),
    HOENN_TO_NATIONAL(CASCOON),
    HOENN_TO_NATIONAL(DUSTOX),
    HOENN_TO_NATIONAL(LOTAD),
    HOENN_TO_NATIONAL(LOMBRE),
    HOENN_TO_NATIONAL(LUDICOLO),
    HOENN_TO_NATIONAL(SEEDOT),
    HOENN_TO_NATIONAL(NUZLEAF),
    HOENN_TO_NATIONAL(SHIFTRY),
    HOENN_TO_NATIONAL(TAILLOW),
    HOENN_TO_NATIONAL(SWELLOW),
    HOENN_TO_NATIONAL(WINGULL),
    HOENN_TO_NATIONAL(PELIPPER),
    HOENN_TO_NATIONAL(RALTS),
    HOENN_TO_NATIONAL(KIRLIA),
    HOENN_TO_NATIONAL(GARDEVOIR),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    HOENN_TO_NATIONAL(GALLADE),
#endif
    HOENN_TO_NATIONAL(SURSKIT),
    HOENN_TO_NATIONAL(MASQUERAIN),
    HOENN_TO_NATIONAL(SHROOMISH),
    HOENN_TO_NATIONAL(BRELOOM),
    HOENN_TO_NATIONAL(SLAKOTH),
    HOENN_TO_NATIONAL(VIGOROTH),
    HOENN_TO_NATIONAL(SLAKING),
    HOENN_TO_NATIONAL(ABRA),
    HOENN_TO_NATIONAL(KADABRA),
    HOENN_TO_NATIONAL(ALAKAZAM),
    HOENN_TO_NATIONAL(NINCADA),
    HOENN_TO_NATIONAL(NINJASK),
    HOENN_TO_NATIONAL(SHEDINJA),
    HOENN_TO_NATIONAL(WHISMUR),
    HOENN_TO_NATIONAL(LOUDRED),
    HOENN_TO_NATIONAL(EXPLOUD),
    HOENN_TO_NATIONAL(MAKUHITA),
    HOENN_TO_NATIONAL(HARIYAMA),
    HOENN_TO_NATIONAL(GOLDEEN),
    HOENN_TO_NATIONAL(SEAKING),
    HOENN_TO_NATIONAL(MAGIKARP),
    HOENN_TO_NATIONAL(GYARADOS),
    HOENN_TO_NATIONAL(AZURILL),
    HOENN_TO_NATIONAL(MARILL),
    HOENN_TO_NATIONAL(AZUMARILL),
    HOENN_TO_NATIONAL(GEODUDE),
    HOENN_TO_NATIONAL(GRAVELER),
    HOENN_TO_NATIONAL(GOLEM),
    HOENN_TO_NATIONAL(NOSEPASS),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    HOENN_TO_NATIONAL(PROBOPASS),
#endif
    HOENN_TO_NATIONAL(SKITTY),
    HOENN_TO_NATIONAL(DELCATTY),
    HOENN_TO_NATIONAL(ZUBAT),
    HOENN_TO_NATIONAL(GOLBAT),
    HOENN_TO_NATIONAL(CROBAT),
    HOENN_TO_NATIONAL(TENTACOOL),
    HOENN_TO_NATIONAL(TENTACRUEL),
    HOENN_TO_NATIONAL(SABLEYE),
    HOENN_TO_NATIONAL(MAWILE),
    HOENN_TO_NATIONAL(ARON),
    HOENN_TO_NATIONAL(LAIRON),
    HOENN_TO_NATIONAL(AGGRON),
    HOENN_TO_NATIONAL(MACHOP),
    HOENN_TO_NATIONAL(MACHOKE),
    HOENN_TO_NATIONAL(MACHAMP),
    HOENN_TO_NATIONAL(MEDITITE),
    HOENN_TO_NATIONAL(MEDICHAM),
    HOENN_TO_NATIONAL(ELECTRIKE),
    HOENN_TO_NATIONAL(MANECTRIC),
    HOENN_TO_NATIONAL(PLUSLE),
    HOENN_TO_NATIONAL(MINUN),
    HOENN_TO_NATIONAL(MAGNEMITE),
    HOENN_TO_NATIONAL(MAGNETON),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    HOENN_TO_NATIONAL(MAGNEZONE),
#endif
    HOENN_TO_NATIONAL(VOLTORB),
    HOENN_TO_NATIONAL(ELECTRODE),
    HOENN_TO_NATIONAL(VOLBEAT),
    HOENN_TO_NATIONAL(ILLUMISE),
    HOENN_TO_NATIONAL(ODDISH),
    HOENN_TO_NATIONAL(GLOOM),
    HOENN_TO_NATIONAL(VILEPLUME),
    HOENN_TO_NATIONAL(BELLOSSOM),
    HOENN_TO_NATIONAL(DODUO),
    HOENN_TO_NATIONAL(DODRIO),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    HOENN_TO_NATIONAL(BUDEW),
    HOENN_TO_NATIONAL(ROSELIA),
    HOENN_TO_NATIONAL(ROSERADE),
#else
    HOENN_TO_NATIONAL(ROSELIA),
#endif
    HOENN_TO_NATIONAL(GULPIN),
    HOENN_TO_NATIONAL(SWALOT),
    HOENN_TO_NATIONAL(CARVANHA),
    HOENN_TO_NATIONAL(SHARPEDO),
    HOENN_TO_NATIONAL(WAILMER),
    HOENN_TO_NATIONAL(WAILORD),
    HOENN_TO_NATIONAL(NUMEL),
    HOENN_TO_NATIONAL(CAMERUPT),
    HOENN_TO_NATIONAL(SLUGMA),
    HOENN_TO_NATIONAL(MAGCARGO),
    HOENN_TO_NATIONAL(TORKOAL),
    HOENN_TO_NATIONAL(GRIMER),
    HOENN_TO_NATIONAL(MUK),
    HOENN_TO_NATIONAL(KOFFING),
    HOENN_TO_NATIONAL(WEEZING),
    HOENN_TO_NATIONAL(SPOINK),
    HOENN_TO_NATIONAL(GRUMPIG),
    HOENN_TO_NATIONAL(SANDSHREW),
    HOENN_TO_NATIONAL(SANDSLASH),
    HOENN_TO_NATIONAL(SPINDA),
    HOENN_TO_NATIONAL(SKARMORY),
    HOENN_TO_NATIONAL(TRAPINCH),
    HOENN_TO_NATIONAL(VIBRAVA),
    HOENN_TO_NATIONAL(FLYGON),
    HOENN_TO_NATIONAL(CACNEA),
    HOENN_TO_NATIONAL(CACTURNE),
    HOENN_TO_NATIONAL(SWABLU),
    HOENN_TO_NATIONAL(ALTARIA),
    HOENN_TO_NATIONAL(ZANGOOSE),
    HOENN_TO_NATIONAL(SEVIPER),
    HOENN_TO_NATIONAL(LUNATONE),
    HOENN_TO_NATIONAL(SOLROCK),
    HOENN_TO_NATIONAL(BARBOACH),
    HOENN_TO_NATIONAL(WHISCASH),
    HOENN_TO_NATIONAL(CORPHISH),
    HOENN_TO_NATIONAL(CRAWDAUNT),
    HOENN_TO_NATIONAL(BALTOY),
    HOENN_TO_NATIONAL(CLAYDOL),
    HOENN_TO_NATIONAL(LILEEP),
    HOENN_TO_NATIONAL(CRADILY),
    HOENN_TO_NATIONAL(ANORITH),
    HOENN_TO_NATIONAL(ARMALDO),
    HOENN_TO_NATIONAL(IGGLYBUFF),
    HOENN_TO_NATIONAL(JIGGLYPUFF),
    HOENN_TO_NATIONAL(WIGGLYTUFF),
    HOENN_TO_NATIONAL(FEEBAS),
    HOENN_TO_NATIONAL(MILOTIC),
    HOENN_TO_NATIONAL(CASTFORM),
    HOENN_TO_NATIONAL(STARYU),
    HOENN_TO_NATIONAL(STARMIE),
    HOENN_TO_NATIONAL(KECLEON),
    HOENN_TO_NATIONAL(SHUPPET),
    HOENN_TO_NATIONAL(BANETTE),
    HOENN_TO_NATIONAL(DUSKULL),
    HOENN_TO_NATIONAL(DUSCLOPS),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    HOENN_TO_NATIONAL(DUSKNOIR),
    HOENN_TO_NATIONAL(TROPIUS),
    HOENN_TO_NATIONAL(CHINGLING),
#else
    HOENN_TO_NATIONAL(TROPIUS),
#endif
    HOENN_TO_NATIONAL(CHIMECHO),
    HOENN_TO_NATIONAL(ABSOL),
    HOENN_TO_NATIONAL(VULPIX),
    HOENN_TO_NATIONAL(NINETALES),
    HOENN_TO_NATIONAL(PICHU),
    HOENN_TO_NATIONAL(PIKACHU),
    HOENN_TO_NATIONAL(RAICHU),
    HOENN_TO_NATIONAL(PSYDUCK),
    HOENN_TO_NATIONAL(GOLDUCK),
    HOENN_TO_NATIONAL(WYNAUT),
    HOENN_TO_NATIONAL(WOBBUFFET),
    HOENN_TO_NATIONAL(NATU),
    HOENN_TO_NATIONAL(XATU),
    HOENN_TO_NATIONAL(GIRAFARIG),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_9_CROSS_EVOS
    HOENN_TO_NATIONAL(FARIGIRAF),
#endif
    HOENN_TO_NATIONAL(PHANPY),
    HOENN_TO_NATIONAL(DONPHAN),
    HOENN_TO_NATIONAL(PINSIR),
    HOENN_TO_NATIONAL(HERACROSS),
    HOENN_TO_NATIONAL(RHYHORN),
    HOENN_TO_NATIONAL(RHYDON),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    HOENN_TO_NATIONAL(RHYPERIOR),
#endif
    HOENN_TO_NATIONAL(SNORUNT),
    HOENN_TO_NATIONAL(GLALIE),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GEN_4_CROSS_EVOS
    HOENN_TO_NATIONAL(FROSLASS),
#endif
    HOENN_TO_NATIONAL(SPHEAL),
    HOENN_TO_NATIONAL(SEALEO),
    HOENN_TO_NATIONAL(WALREIN),
    HOENN_TO_NATIONAL(CLAMPERL),
    HOENN_TO_NATIONAL(HUNTAIL),
    HOENN_TO_NATIONAL(GOREBYSS),
    HOENN_TO_NATIONAL(RELICANTH),
    HOENN_TO_NATIONAL(CORSOLA),
#if P_NEW_EVOS_IN_REGIONAL_DEX && P_GALARIAN_FORMS
    HOENN_TO_NATIONAL(CURSOLA),
#endif
    HOENN_TO_NATIONAL(CHINCHOU),
    HOENN_TO_NATIONAL(LANTURN),
    HOENN_TO_NATIONAL(LUVDISC),
    HOENN_TO_NATIONAL(HORSEA),
    HOENN_TO_NATIONAL(SEADRA),
    HOENN_TO_NATIONAL(KINGDRA),
    HOENN_TO_NATIONAL(BAGON),
    HOENN_TO_NATIONAL(SHELGON),
    HOENN_TO_NATIONAL(SALAMENCE),
    HOENN_TO_NATIONAL(BELDUM),
    HOENN_TO_NATIONAL(METANG),
    HOENN_TO_NATIONAL(METAGROSS),
    HOENN_TO_NATIONAL(REGIROCK),
    HOENN_TO_NATIONAL(REGICE),
    HOENN_TO_NATIONAL(REGISTEEL),
    HOENN_TO_NATIONAL(LATIAS),
    HOENN_TO_NATIONAL(LATIOS),
    HOENN_TO_NATIONAL(KYOGRE),
    HOENN_TO_NATIONAL(GROUDON),
    HOENN_TO_NATIONAL(RAYQUAZA),
    HOENN_TO_NATIONAL(JIRACHI),
    HOENN_TO_NATIONAL(DEOXYS),
};

static const struct SpindaSpot sSpindaSpotGraphics[] =
{
    {.x = 16, .y = 7, .image = INCBIN_U16("graphics/spinda_spots/spot_0.bin")},
    {.x = 40, .y = 8, .image = INCBIN_U16("graphics/spinda_spots/spot_1.bin")},
    {.x = 22, .y = 25, .image = INCBIN_U16("graphics/spinda_spots/spot_2.bin")},
    {.x = 34, .y = 26, .image = INCBIN_U16("graphics/spinda_spots/spot_3.bin")}
};

const u8 *const gNatureNamePointers[NUM_NATURES] =
{
    [NATURE_HARDY] = COMPOUND_STRING("Hardy"),
    [NATURE_LONELY] = COMPOUND_STRING("Lonely"),
    [NATURE_BRAVE] = COMPOUND_STRING("Brave"),
    [NATURE_ADAMANT] = COMPOUND_STRING("Adamant"),
    [NATURE_NAUGHTY] = COMPOUND_STRING("Naughty"),
    [NATURE_BOLD] = COMPOUND_STRING("Bold"),
    [NATURE_DOCILE] = COMPOUND_STRING("Docile"),
    [NATURE_RELAXED] = COMPOUND_STRING("Relaxed"),
    [NATURE_IMPISH] = COMPOUND_STRING("Impish"),
    [NATURE_LAX] = COMPOUND_STRING("Lax"),
    [NATURE_TIMID] = COMPOUND_STRING("Timid"),
    [NATURE_HASTY] = COMPOUND_STRING("Hasty"),
    [NATURE_SERIOUS] = COMPOUND_STRING("Serious"),
    [NATURE_JOLLY] = COMPOUND_STRING("Jolly"),
    [NATURE_NAIVE] = COMPOUND_STRING("Naive"),
    [NATURE_MODEST] = COMPOUND_STRING("Modest"),
    [NATURE_MILD] = COMPOUND_STRING("Mild"),
    [NATURE_QUIET] = COMPOUND_STRING("Quiet"),
    [NATURE_BASHFUL] = COMPOUND_STRING("Bashful"),
    [NATURE_RASH] = COMPOUND_STRING("Rash"),
    [NATURE_CALM] = COMPOUND_STRING("Calm"),
    [NATURE_GENTLE] = COMPOUND_STRING("Gentle"),
    [NATURE_SASSY] = COMPOUND_STRING("Sassy"),
    [NATURE_CAREFUL] = COMPOUND_STRING("Careful"),
    [NATURE_QUIRKY] = COMPOUND_STRING("Quirky"),
};

const s8 gNatureStatTable[NUM_NATURES][NUM_NATURE_STATS] =
{                      // Attack  Defense  Speed  Sp.Atk  Sp. Def
    [NATURE_HARDY]   = {    0,      0,      0,      0,      0   },
    [NATURE_LONELY]  = {   +1,     -1,      0,      0,      0   },
    [NATURE_BRAVE]   = {   +1,      0,     -1,      0,      0   },
    [NATURE_ADAMANT] = {   +1,      0,      0,     -1,      0   },
    [NATURE_NAUGHTY] = {   +1,      0,      0,      0,     -1   },
    [NATURE_BOLD]    = {   -1,     +1,      0,      0,      0   },
    [NATURE_DOCILE]  = {    0,      0,      0,      0,      0   },
    [NATURE_RELAXED] = {    0,     +1,     -1,      0,      0   },
    [NATURE_IMPISH]  = {    0,     +1,      0,     -1,      0   },
    [NATURE_LAX]     = {    0,     +1,      0,      0,     -1   },
    [NATURE_TIMID]   = {   -1,      0,     +1,      0,      0   },
    [NATURE_HASTY]   = {    0,     -1,     +1,      0,      0   },
    [NATURE_SERIOUS] = {    0,      0,      0,      0,      0   },
    [NATURE_JOLLY]   = {    0,      0,     +1,     -1,      0   },
    [NATURE_NAIVE]   = {    0,      0,     +1,      0,     -1   },
    [NATURE_MODEST]  = {   -1,      0,      0,     +1,      0   },
    [NATURE_MILD]    = {    0,     -1,      0,     +1,      0   },
    [NATURE_QUIET]   = {    0,      0,     -1,     +1,      0   },
    [NATURE_BASHFUL] = {    0,      0,      0,      0,      0   },
    [NATURE_RASH]    = {    0,      0,      0,     +1,     -1   },
    [NATURE_CALM]    = {   -1,      0,      0,      0,     +1   },
    [NATURE_GENTLE]  = {    0,     -1,      0,      0,     +1   },
    [NATURE_SASSY]   = {    0,      0,     -1,      0,     +1   },
    [NATURE_CAREFUL] = {    0,      0,      0,     -1,     +1   },
    [NATURE_QUIRKY]  = {    0,      0,      0,      0,      0   },
};


#include "data/graphics/pokemon.h"
#include "data/pokemon_graphics/front_pic_anims.h"

#include "data/pokemon/trainer_class_lookups.h"
#include "data/pokemon/experience_tables.h"

#if P_LVL_UP_LEARNSETS >= GEN_9
#include "data/pokemon/level_up_learnsets/gen_9.h" // Scarlet/Violet
#elif P_LVL_UP_LEARNSETS >= GEN_8
#include "data/pokemon/level_up_learnsets/gen_8.h" // Sword/Shield
#elif P_LVL_UP_LEARNSETS >= GEN_7
#include "data/pokemon/level_up_learnsets/gen_7.h" // Ultra Sun/ Ultra Moon
#elif P_LVL_UP_LEARNSETS >= GEN_6
#include "data/pokemon/level_up_learnsets/gen_6.h" // Omega Ruby/Alpha Sapphire
#elif P_LVL_UP_LEARNSETS >= GEN_5
#include "data/pokemon/level_up_learnsets/gen_5.h" // Black 2/White 2
#elif P_LVL_UP_LEARNSETS >= GEN_4
#include "data/pokemon/level_up_learnsets/gen_4.h" // HeartGold/SoulSilver
#elif P_LVL_UP_LEARNSETS >= GEN_3
#include "data/pokemon/level_up_learnsets/gen_3.h" // Ruby/Sapphire/Emerald
#elif P_LVL_UP_LEARNSETS >= GEN_2
#include "data/pokemon/level_up_learnsets/gen_2.h" // Crystal
#elif P_LVL_UP_LEARNSETS >= GEN_1
#include "data/pokemon/level_up_learnsets/gen_1.h" // Yellow
#endif

#include "data/pokemon/teachable_learnsets.h"
#include "data/pokemon/form_species_tables.h"
#include "data/pokemon/form_change_tables.h"

#include "data/pokemon/species_info.h"

static const s8 sPokeblockFlavorCompatibilityTable[NUM_NATURES * FLAVOR_COUNT] =
{
    // Cool, Beauty, Cute, Smart, Tough
          0,      0,    0,     0,     0, // Hardy
          1,      0,    0,     0,    -1, // Lonely
          1,      0,   -1,     0,     0, // Brave
          1,     -1,    0,     0,     0, // Adamant
          1,      0,    0,    -1,     0, // Naughty
         -1,      0,    0,     0,     1, // Bold
          0,      0,    0,     0,     0, // Docile
          0,      0,   -1,     0,     1, // Relaxed
          0,     -1,    0,     0,     1, // Impish
          0,      0,    0,    -1,     1, // Lax
         -1,      0,    1,     0,     0, // Timid
          0,      0,    1,     0,    -1, // Hasty
          0,      0,    0,     0,     0, // Serious
          0,     -1,    1,     0,     0, // Jolly
          0,      0,    1,    -1,     0, // Naive
         -1,      1,    0,     0,     0, // Modest
          0,      1,    0,     0,    -1, // Mild
          0,      1,   -1,     0,     0, // Quiet
          0,      0,    0,     0,     0, // Bashful
          0,      1,    0,    -1,     0, // Rash
         -1,      0,    0,     1,     0, // Calm
          0,      0,    0,     1,    -1, // Gentle
          0,      0,   -1,     1,     0, // Sassy
          0,     -1,    0,     1,     0, // Careful
          0,      0,    0,     0,     0  // Quirky
};

#define PP_UP_SHIFTS(val)           val,        (val) << 2,        (val) << 4,        (val) << 6
#define PP_UP_SHIFTS_INV(val) (u8)~(val), (u8)~((val) << 2), (u8)~((val) << 4), (u8)~((val) << 6)

// PP Up bonuses are stored for a Pokémon as a single byte.
// There are 2 bits (a value 0-3) for each move slot that
// represent how many PP Ups have been applied.
// The following arrays take a move slot id and return:
// gPPUpGetMask - A mask to get the number of PP Ups applied to that move slot
// gPPUpClearMask - A mask to clear the number of PP Ups applied to that move slot
// gPPUpAddValues - A value to add to the PP Bonuses byte to apply 1 PP Up to that move slot
const u8 gPPUpGetMask[MAX_MON_MOVES]   = {PP_UP_SHIFTS(3)};
const u8 gPPUpClearMask[MAX_MON_MOVES] = {PP_UP_SHIFTS_INV(3)};
const u8 gPPUpAddValues[MAX_MON_MOVES] = {PP_UP_SHIFTS(1)};

const u8 gStatStageRatios[MAX_STAT_STAGE + 1][2] =
{
    {10, 40}, // -6, MIN_STAT_STAGE
    {10, 35}, // -5
    {10, 30}, // -4
    {10, 25}, // -3
    {10, 20}, // -2
    {10, 15}, // -1
    {10, 10}, //  0, DEFAULT_STAT_STAGE
    {15, 10}, // +1
    {20, 10}, // +2
    {25, 10}, // +3
    {30, 10}, // +4
    {35, 10}, // +5
    {40, 10}, // +6, MAX_STAT_STAGE
};

static const u8 sText_GameFreak[] = _("ゲーフリ");

static const u8 sHoldEffectToType[][2] = 
{
    {HOLD_EFFECT_BUG_POWER, TYPE_BUG},
    {HOLD_EFFECT_STEEL_POWER, TYPE_STEEL},
    {HOLD_EFFECT_GROUND_POWER, TYPE_GROUND},
    {HOLD_EFFECT_ROCK_POWER, TYPE_ROCK},
    {HOLD_EFFECT_GRASS_POWER, TYPE_GRASS},
    {HOLD_EFFECT_DARK_POWER, TYPE_DARK},
    {HOLD_EFFECT_FIGHTING_POWER, TYPE_FIGHTING},
    {HOLD_EFFECT_ELECTRIC_POWER, TYPE_ELECTRIC},
    {HOLD_EFFECT_WATER_POWER, TYPE_WATER},
    {HOLD_EFFECT_FLYING_POWER, TYPE_FLYING},
    {HOLD_EFFECT_POISON_POWER, TYPE_POISON},
    {HOLD_EFFECT_ICE_POWER, TYPE_ICE},
    {HOLD_EFFECT_GHOST_POWER, TYPE_GHOST},
    {HOLD_EFFECT_PSYCHIC_POWER, TYPE_PSYCHIC},
    {HOLD_EFFECT_FIRE_POWER, TYPE_FIRE},
    {HOLD_EFFECT_DRAGON_POWER, TYPE_DRAGON},
    {HOLD_EFFECT_NORMAL_POWER, TYPE_NORMAL},
    {HOLD_EFFECT_FAIRY_POWER, TYPE_FAIRY},
};

const struct SpriteTemplate gSpriteTemplates_Battlers[MAX_BATTLERS_COUNT] = 
{
    [B_POSITION_PLAYER_LEFT] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerPlayer,
        .anims = NULL, 
        .images = gBattlerPicTable_PlayerLeft,
        .affineAnims = gAffineAnims_BattleSpritePlayerSide,
        .callback = SpriteCB_AllyMon,
    },
    [B_POSITION_OPPONENT_LEFT] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerOpponent,
        .anims = NULL, 
        .images = gBattlerPicTable_OpponentLeft,
        .affineAnims = gAffineAnims_BattleSpriteOpponentSide,
        .callback = SpriteCB_EnemyMon,
    },
    [B_POSITION_PLAYER_RIGHT] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerPlayer,
        .anims = NULL, 
        .images = gBattlerPicTable_PlayerRight,
        .affineAnims = gAffineAnims_BattleSpritePlayerSide,
        .callback = SpriteCB_AllyMon,
    },
    [B_POSITION_OPPONENT_RIGHT] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerOpponent,
        .anims = NULL, 
        .images = gBattlerPicTable_OpponentRight,
        .affineAnims = gAffineAnims_BattleSpriteOpponentSide,
        .callback = SpriteCB_EnemyMon,
    },
};

static const struct SpriteTemplate sTrainerBackSpriteTemplates[] = 
{
    [TRAINER_BACK_PIC_RED] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerPlayer,
        .anims = NULL, 
        .images = gTrainerBackPicTable_Red,
        .affineAnims = gAffineAnims_BattleSpritePlayerSide,
        .callback = SpriteCB_AllyMon,
    },
    [TRAINER_BACK_PIC_LEAF] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerPlayer,
        .anims = NULL, 
        .images = gTrainerBackPicTable_Leaf,
        .affineAnims = gAffineAnims_BattleSpritePlayerSide,
        .callback = SpriteCB_AllyMon,
    },
    [TRAINER_BACK_PIC_RUBY_SAPPHIRE_BRENDAN] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerPlayer,
        .anims = NULL, 
        .images = gTrainerBackPicTable_RSBrendan,
        .affineAnims = gAffineAnims_BattleSpritePlayerSide,
        .callback = SpriteCB_AllyMon,
    },
    [TRAINER_BACK_PIC_RUBY_SAPPHIRE_MAY] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerPlayer,
        .anims = NULL, 
        .images = gTrainerBackPicTable_RSMay,
        .affineAnims = gAffineAnims_BattleSpritePlayerSide,
        .callback = SpriteCB_AllyMon,
    },
    [TRAINER_BACK_PIC_POKEDUDE] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerPlayer,
        .anims = NULL, 
        .images = gTrainerBackPicTable_Pokedude,
        .affineAnims = gAffineAnims_BattleSpritePlayerSide,
        .callback = SpriteCB_AllyMon,
    },
    [TRAINER_BACK_PIC_OLD_MAN] = {
        .tileTag = TAG_NONE,
        .paletteTag = 0,
        .oam = &gOamData_BattlerPlayer,
        .anims = NULL, 
        .images = gTrainerBackPicTable_OldMan,
        .affineAnims = gAffineAnims_BattleSpritePlayerSide,
        .callback = SpriteCB_AllyMon,
    },
};

// Classes dummied out
#define NUM_SECRET_BASE_CLASSES 5
static const u8 sSecretBaseFacilityClasses[GENDER_COUNT][NUM_SECRET_BASE_CLASSES] = 
{
    [MALE] = {
        FACILITY_CLASS_YOUNGSTER,
        FACILITY_CLASS_YOUNGSTER,
        FACILITY_CLASS_YOUNGSTER,
        FACILITY_CLASS_YOUNGSTER,
        FACILITY_CLASS_YOUNGSTER
    },
    [FEMALE] = {
        FACILITY_CLASS_YOUNGSTER,
        FACILITY_CLASS_YOUNGSTER,
        FACILITY_CLASS_YOUNGSTER,
        FACILITY_CLASS_YOUNGSTER,
        FACILITY_CLASS_YOUNGSTER
    },
};

static const u8 sGetMonDataEVConstants[] =
{
    MON_DATA_HP_EV,
    MON_DATA_ATK_EV,
    MON_DATA_DEF_EV,
    MON_DATA_SPEED_EV,
    MON_DATA_SPDEF_EV,
    MON_DATA_SPATK_EV
};

// 3 modifiers each for how much to change friendship for different ranges
// 0-99, 100-199, 200+
static const s8 sFriendshipEventDeltas[][3] = 
{
    [FRIENDSHIP_EVENT_GROW_LEVEL]           = { 5,  3,  2 },
    [FRIENDSHIP_EVENT_VITAMIN]              = { 5,  3,  2 },
    [FRIENDSHIP_EVENT_BATTLE_ITEM]          = { 1,  1,  0 },
    [FRIENDSHIP_EVENT_LEAGUE_BATTLE]        = { 3,  2,  1 },
    [FRIENDSHIP_EVENT_LEARN_TMHM]           = { 1,  1,  0 },
    [FRIENDSHIP_EVENT_WALKING]              = { 1,  1,  1 },
    [FRIENDSHIP_EVENT_MASSAGE]              = { 3,  3,  3 },
    [FRIENDSHIP_EVENT_FAINT_SMALL]          = {-1, -1, -1 },
    [FRIENDSHIP_EVENT_FAINT_OUTSIDE_BATTLE] = {-5, -5, -10 },
    [FRIENDSHIP_EVENT_FAINT_LARGE]          = {-5, -5, -10 },
};

#define HM_MOVES_END 0xFFFF

static const u16 sHMMoves[] = 
{
    MOVE_CUT, MOVE_FLY, MOVE_SURF, MOVE_STRENGTH, MOVE_FLASH,
    MOVE_ROCK_SMASH, MOVE_WATERFALL, MOVE_DIVE, HM_MOVES_END
};

static const struct SpeciesItem sAlteringCaveWildMonHeldItems[] =
{
    {SPECIES_NONE,      ITEM_NONE},
    {SPECIES_MAREEP,    ITEM_GANLON_BERRY},
    {SPECIES_PINECO,    ITEM_APICOT_BERRY},
    {SPECIES_HOUNDOUR,  ITEM_BIG_MUSHROOM},
    {SPECIES_TEDDIURSA, ITEM_PETAYA_BERRY},
    {SPECIES_AIPOM,     ITEM_BERRY_JUICE},
    {SPECIES_SHUCKLE,   ITEM_BERRY_JUICE},
    {SPECIES_STANTLER,  ITEM_PETAYA_BERRY},
    {SPECIES_SMEARGLE,  ITEM_SALAC_BERRY},
};

// The classes used by other players in the Union Room.
// These should correspond with the overworld graphics in sUnionRoomObjGfxIds
const u16 gUnionRoomFacilityClasses[NUM_UNION_ROOM_CLASSES * GENDER_COUNT] = 
{
    // Male
    FACILITY_CLASS_COOLTRAINER_M,
    FACILITY_CLASS_BLACK_BELT,
    FACILITY_CLASS_CAMPER,
    FACILITY_CLASS_YOUNGSTER,
    FACILITY_CLASS_PSYCHIC_M,
    FACILITY_CLASS_BUG_CATCHER,
    FACILITY_CLASS_TAMER,
    FACILITY_CLASS_JUGGLER,
    // Female
    FACILITY_CLASS_COOLTRAINER_F,
    FACILITY_CLASS_CHANNELER,
    FACILITY_CLASS_PICNICKER,
    FACILITY_CLASS_LASS,
    FACILITY_CLASS_PSYCHIC_F,
    FACILITY_CLASS_CRUSH_GIRL,
    FACILITY_CLASS_PKMN_BREEDER,
    FACILITY_CLASS_BEAUTY,
};

static const struct OamData sOamData_64x64 = 
{
    .y = 0,
    .affineMode = ST_OAM_AFFINE_OFF,
    .objMode = ST_OAM_OBJ_NORMAL,
    .mosaic = FALSE,
    .bpp = ST_OAM_4BPP,
    .shape = SPRITE_SHAPE(64x64),
    .x = 0,
    .matrixNum = 0,
    .size = SPRITE_SIZE(64x64),
    .tileNum = 0,
    .priority = 0,
    .paletteNum = 0,
};

static const struct SpriteTemplate sSpriteTemplate_64x64 = 
{
    .tileTag = TAG_NONE,
    .paletteTag = TAG_NONE,
    .oam = &sOamData_64x64,
    .anims = gDummySpriteAnimTable, 
    .images = NULL,
    .affineAnims = gDummySpriteAffineAnimTable,
    .callback = SpriteCallbackDummy,
};

// NOTE: Reordering this array will break compatibility with existing
// saves.
static const u32 sCompressedStatuses[] =
{
    STATUS1_NONE,
    STATUS1_SLEEP_TURN(1),
    STATUS1_SLEEP_TURN(2),
    STATUS1_SLEEP_TURN(3),
    STATUS1_SLEEP_TURN(4),
    STATUS1_SLEEP_TURN(5),
    STATUS1_POISON,
    STATUS1_BURN,
    STATUS1_FREEZE,
    STATUS1_PARALYSIS,
    STATUS1_TOXIC_POISON,
    STATUS1_FROSTBITE,
};

// Attempt to detect situations where the BoxPokemon struct is unable to
// contain all the values.
// TODO: Is it possible to compute:
// - The maximum experience.
// - The maximum PP.
// - The maximum HP.
// - The maximum form countdown.
STATIC_ASSERT(NUM_SPECIES < (1 << 11), PokemonSubstruct0_species_TooSmall);
STATIC_ASSERT(NUMBER_OF_MON_TYPES + 1 <= (1 << 5), PokemonSubstruct0_teraType_TooSmall);
STATIC_ASSERT(ITEMS_COUNT < (1 << 10), PokemonSubstruct0_heldItem_TooSmall);
STATIC_ASSERT(MAX_LEVEL <= 100, PokemonSubstruct0_experience_PotentiallTooSmall); // Maximum of ~2 million exp.
STATIC_ASSERT(LAST_BALL < (1 << 6), PokemonSubstruct0_pokeball_TooSmall);
STATIC_ASSERT(MOVES_COUNT_ALL < (1 << 11), PokemonSubstruct1_moves_TooSmall);
STATIC_ASSERT(ARRAY_COUNT(sCompressedStatuses) <= (1 << 4), PokemonSubstruct3_compressedStatus_TooSmall);
STATIC_ASSERT(MAX_LEVEL < (1 << 7), PokemonSubstruct3_metLevel_TooSmall);
STATIC_ASSERT(NUM_VERSIONS < (1 << 4), PokemonSubstruct3_metGame_TooSmall);
STATIC_ASSERT(MAX_DYNAMAX_LEVEL < (1 << 4), PokemonSubstruct3_dynamaxLevel_TooSmall);
STATIC_ASSERT(MAX_PER_STAT_IVS < (1 << 5), PokemonSubstruct3_ivs_TooSmall);
STATIC_ASSERT(NUM_NATURES <= (1 << 5), BoxPokemon_hiddenNatureModifier_TooSmall);

static u32 CompressStatus(u32 status)
{
    s32 i;
    for (i = 0; i < ARRAY_COUNT(sCompressedStatuses); i++)
    {
        if (sCompressedStatuses[i] == status)
            return i;
    }
    return 0; // STATUS1_NONE
}

static u32 UncompressStatus(u32 compressedStatus)
{
    if (compressedStatus < ARRAY_COUNT(sCompressedStatuses))
        return sCompressedStatuses[compressedStatus];
    else
        return STATUS1_NONE;
}

void ZeroBoxMonData(struct BoxPokemon *boxMon)
{
    u8 *raw = (u8 *)boxMon;
    u32 i;
    for (i = 0; i < sizeof(struct BoxPokemon); i++)
        raw[i] = 0;
}

void ZeroMonData(struct Pokemon *mon)
{
    u32 arg;
    ZeroBoxMonData(&mon->box);
    arg = 0;
    SetMonData(mon, MON_DATA_STATUS, &arg);
    SetMonData(mon, MON_DATA_LEVEL, &arg);
    SetMonData(mon, MON_DATA_HP, &arg);
    SetMonData(mon, MON_DATA_MAX_HP, &arg);
    SetMonData(mon, MON_DATA_ATK, &arg);
    SetMonData(mon, MON_DATA_DEF, &arg);
    SetMonData(mon, MON_DATA_SPEED, &arg);
    SetMonData(mon, MON_DATA_SPATK, &arg);
    SetMonData(mon, MON_DATA_SPDEF, &arg);
    arg = MAIL_NONE;
    SetMonData(mon, MON_DATA_MAIL, &arg);
}

void ZeroPlayerPartyMons(void)
{
    s32 i;
    for (i = 0; i < PARTY_SIZE; i++)
        ZeroMonData(&gPlayerParty[i]);
}

void ZeroEnemyPartyMons(void)
{
    s32 i;
    for (i = 0; i < PARTY_SIZE; i++)
        ZeroMonData(&gEnemyParty[i]);
}

void CreateMon(struct Pokemon *mon, u16 species, u8 level, u8 fixedIV, u8 hasFixedPersonality, u32 fixedPersonality, u8 otIdType, u32 fixedOtId)
{
    u32 mail;
    ZeroMonData(mon);
    CreateBoxMon(&mon->box, species, level, fixedIV, hasFixedPersonality, fixedPersonality, otIdType, fixedOtId);
    SetMonData(mon, MON_DATA_LEVEL, &level);
    mail = MAIL_NONE;
    SetMonData(mon, MON_DATA_MAIL, &mail);
    CalculateMonStats(mon);
}

void CreateBoxMon(struct BoxPokemon *boxMon, u16 species, u8 level, u8 fixedIV, u8 hasFixedPersonality, u32 fixedPersonality, u8 otIdType, u32 fixedOtId)
{
    u8 speciesName[POKEMON_NAME_LENGTH + 1];
    u32 personality;
    u32 value;
    u16 checksum;
    u8 i;
    u8 availableIVs[NUM_STATS];
    u8 selectedIvs[LEGENDARY_PERFECT_IV_COUNT];
    bool32 isShiny;

    ZeroBoxMonData(boxMon);

    if (hasFixedPersonality)
        personality = fixedPersonality;
    else
        personality = Random32();

    // Determine original trainer ID
    if (otIdType == OT_ID_RANDOM_NO_SHINY)
    {
        value = Random32();
        isShiny = FALSE;
    }
    else if (otIdType == OT_ID_PRESET)
    {
        value = fixedOtId;
        isShiny = GET_SHINY_VALUE(value, personality) < SHINY_ODDS;
    }
    else // Player is the OT
    {
        value = gSaveBlock2Ptr->playerTrainerId[0]
              | (gSaveBlock2Ptr->playerTrainerId[1] << 8)
              | (gSaveBlock2Ptr->playerTrainerId[2] << 16)
              | (gSaveBlock2Ptr->playerTrainerId[3] << 24);

        if (P_FLAG_FORCE_NO_SHINY != 0 && FlagGet(P_FLAG_FORCE_NO_SHINY))
        {
            isShiny = FALSE;
        }
        else if (P_FLAG_FORCE_SHINY != 0 && FlagGet(P_FLAG_FORCE_SHINY))
        {
            isShiny = TRUE;
        }
        else
        {
            u32 totalRerolls = 0;
            if (CheckBagHasItem(ITEM_SHINY_CHARM, 1))
                totalRerolls += I_SHINY_CHARM_ADDITIONAL_ROLLS;
            // if (LURE_STEP_COUNT != 0)
            //     totalRerolls += 1;

            while (GET_SHINY_VALUE(value, personality) >= SHINY_ODDS && totalRerolls > 0)
            {
                personality = Random32();
                totalRerolls--;
            }

            isShiny = GET_SHINY_VALUE(value, personality) < SHINY_ODDS;
        }
    }

    SetBoxMonData(boxMon, MON_DATA_PERSONALITY, &personality);
    SetBoxMonData(boxMon, MON_DATA_OT_ID, &value);

    checksum = CalculateBoxMonChecksum(boxMon);
    SetBoxMonData(boxMon, MON_DATA_CHECKSUM, &checksum);
    EncryptBoxMon(boxMon);
    SetBoxMonData(boxMon, MON_DATA_IS_SHINY, &isShiny);
    StringCopy(speciesName, GetSpeciesName(species));
    SetBoxMonData(boxMon, MON_DATA_NICKNAME, speciesName);
    SetBoxMonData(boxMon, MON_DATA_LANGUAGE, &gGameLanguage);
    SetBoxMonData(boxMon, MON_DATA_OT_NAME, gSaveBlock2Ptr->playerName);
    SetBoxMonData(boxMon, MON_DATA_SPECIES, &species);
    SetBoxMonData(boxMon, MON_DATA_EXP, &gExperienceTables[gSpeciesInfo[species].growthRate][level]);
    SetBoxMonData(boxMon, MON_DATA_FRIENDSHIP, &gSpeciesInfo[species].friendship);
    value = GetCurrentRegionMapSectionId();
    SetBoxMonData(boxMon, MON_DATA_MET_LOCATION, &value);
    SetBoxMonData(boxMon, MON_DATA_MET_LEVEL, &level);
    SetBoxMonData(boxMon, MON_DATA_MET_GAME, &gGameVersion);
    value = ITEM_POKE_BALL;
    SetBoxMonData(boxMon, MON_DATA_POKEBALL, &value);
    SetBoxMonData(boxMon, MON_DATA_OT_GENDER, &gSaveBlock2Ptr->playerGender);

    if (fixedIV < USE_RANDOM_IVS)
    {
        SetBoxMonData(boxMon, MON_DATA_HP_IV, &fixedIV);
        SetBoxMonData(boxMon, MON_DATA_ATK_IV, &fixedIV);
        SetBoxMonData(boxMon, MON_DATA_DEF_IV, &fixedIV);
        SetBoxMonData(boxMon, MON_DATA_SPEED_IV, &fixedIV);
        SetBoxMonData(boxMon, MON_DATA_SPATK_IV, &fixedIV);
        SetBoxMonData(boxMon, MON_DATA_SPDEF_IV, &fixedIV);
    }
    else
    {
        u32 iv;
        value = Random();

        iv = value & MAX_IV_MASK;
        SetBoxMonData(boxMon, MON_DATA_HP_IV, &iv);
        iv = (value & (MAX_IV_MASK << 5)) >> 5;
        SetBoxMonData(boxMon, MON_DATA_ATK_IV, &iv);
        iv = (value & (MAX_IV_MASK << 10)) >> 10;
        SetBoxMonData(boxMon, MON_DATA_DEF_IV, &iv);

        value = Random();

        iv = value & MAX_IV_MASK;
        SetBoxMonData(boxMon, MON_DATA_SPEED_IV, &iv);
        iv = (value & (MAX_IV_MASK << 5)) >> 5;
        SetBoxMonData(boxMon, MON_DATA_SPATK_IV, &iv);
        iv = (value & (MAX_IV_MASK << 10)) >> 10;
        SetBoxMonData(boxMon, MON_DATA_SPDEF_IV, &iv);

        if (gSpeciesInfo[species].allPerfectIVs)
        {
            iv = MAX_PER_STAT_IVS;
            SetBoxMonData(boxMon, MON_DATA_HP_IV, &iv);
            SetBoxMonData(boxMon, MON_DATA_ATK_IV, &iv);
            SetBoxMonData(boxMon, MON_DATA_DEF_IV, &iv);
            SetBoxMonData(boxMon, MON_DATA_SPEED_IV, &iv);
            SetBoxMonData(boxMon, MON_DATA_SPATK_IV, &iv);
            SetBoxMonData(boxMon, MON_DATA_SPDEF_IV, &iv);
        }
        else if (P_LEGENDARY_PERFECT_IVS >= GEN_6
         && (gSpeciesInfo[species].isLegendary
          || gSpeciesInfo[species].isMythical
          || gSpeciesInfo[species].isUltraBeast
          || gSpeciesInfo[species].isTotem))
        {
            iv = MAX_PER_STAT_IVS;
            // Initialize a list of IV indices.
            for (i = 0; i < NUM_STATS; i++)
            {
                availableIVs[i] = i;
            }

            // Select the 3 IVs that will be perfected.
            for (i = 0; i < LEGENDARY_PERFECT_IV_COUNT; i++)
            {
                u8 index = Random() % (NUM_STATS - i);
                selectedIvs[i] = availableIVs[index];
                RemoveIVIndexFromList(availableIVs, index);
            }
            for (i = 0; i < LEGENDARY_PERFECT_IV_COUNT; i++)
            {
                switch (selectedIvs[i])
                {
                case STAT_HP:
                    SetBoxMonData(boxMon, MON_DATA_HP_IV, &iv);
                    break;
                case STAT_ATK:
                    SetBoxMonData(boxMon, MON_DATA_ATK_IV, &iv);
                    break;
                case STAT_DEF:
                    SetBoxMonData(boxMon, MON_DATA_DEF_IV, &iv);
                    break;
                case STAT_SPEED:
                    SetBoxMonData(boxMon, MON_DATA_SPEED_IV, &iv);
                    break;
                case STAT_SPATK:
                    SetBoxMonData(boxMon, MON_DATA_SPATK_IV, &iv);
                    break;
                case STAT_SPDEF:
                    SetBoxMonData(boxMon, MON_DATA_SPDEF_IV, &iv);
                    break;
                }
            }
        }
    }

    if (gSpeciesInfo[species].abilities[1])
    {
        value = personality & 1;
        SetBoxMonData(boxMon, MON_DATA_ABILITY_NUM, &value);
    }

    GiveBoxMonInitialMoveset(boxMon);
}

void CreateMonWithNature(struct Pokemon *mon, u16 species, u8 level, u8 fixedIV, u8 nature)
{
    u32 personality;
    u16 evolutionTracker = GetMonData(mon, MON_DATA_EVOLUTION_TRACKER);
    do
    {
        personality = Random32();
    }
    while (nature != GetNatureFromPersonality(personality));

    CreateMon(mon, species, level, fixedIV, TRUE, personality, OT_ID_PLAYER_ID, 0);
}

void CreateMonWithGenderNatureLetter(struct Pokemon *mon, u16 species, u8 level, u8 fixedIV, u8 gender, u8 nature, u8 unownLetter)
{
    u32 personality;

    if ((u8)(unownLetter - 1) < NUM_UNOWN_FORMS)
    {
        u16 actualLetter;

        do
        {
            personality = Random32();
            actualLetter = GET_UNOWN_LETTER(personality);
        }
        while (nature != GetNatureFromPersonality(personality)
            || gender != GetGenderFromSpeciesAndPersonality(species, personality)
            || actualLetter != unownLetter - 1);
    }
    else
    {
        do
        {
            personality = Random32();
        }
        while (nature != GetNatureFromPersonality(personality)
            || gender != GetGenderFromSpeciesAndPersonality(species, personality));
    }

    CreateMon(mon, species, level, fixedIV, TRUE, personality, OT_ID_PLAYER_ID, 0);
}

// Used to create the Old Man's Weedle?
void CreateMaleMon(struct Pokemon *mon, u16 species, u8 level)
{
    u32 personality;
    u32 otId;

    do
    {
        otId = Random32();
        personality = Random32();
    }
    while (GetGenderFromSpeciesAndPersonality(species, personality) != MON_MALE);
    CreateMon(mon, species, level, USE_RANDOM_IVS, TRUE, personality, OT_ID_PRESET, otId);
}

void CreateMonWithIVsPersonality(struct Pokemon *mon, u16 species, u8 level, u32 ivs, u32 personality)
{
    CreateMon(mon, species, level, 0, TRUE, personality, OT_ID_PLAYER_ID, 0);
    SetMonData(mon, MON_DATA_IVS, &ivs);
    CalculateMonStats(mon);
}

static void CreateMonWithIVsOTID(struct Pokemon *mon, u16 species, u8 level, u8 *ivs, u32 otId)
{
    CreateMon(mon, species, level, 0, FALSE, 0, OT_ID_PRESET, otId);
    SetMonData(mon, MON_DATA_HP_IV, &ivs[STAT_HP]);
    SetMonData(mon, MON_DATA_ATK_IV, &ivs[STAT_ATK]);
    SetMonData(mon, MON_DATA_DEF_IV, &ivs[STAT_DEF]);
    SetMonData(mon, MON_DATA_SPEED_IV, &ivs[STAT_SPEED]);
    SetMonData(mon, MON_DATA_SPATK_IV, &ivs[STAT_SPATK]);
    SetMonData(mon, MON_DATA_SPDEF_IV, &ivs[STAT_SPDEF]);
    CalculateMonStats(mon);
}

void CreateMonWithEVSpread(struct Pokemon *mon, u16 species, u8 level, u8 fixedIV, u8 evSpread)
{
    s32 i;
    s32 statCount = 0;
    u16 evAmount;
    u8 evsBits;

    CreateMon(mon, species, level, fixedIV, FALSE, 0, OT_ID_PLAYER_ID, 0);

    evsBits = evSpread;

    for (i = 0; i < NUM_STATS; i++)
    {
        if (evsBits & 1)
            statCount++;
        evsBits >>= 1;
    }

    evAmount = MAX_TOTAL_EVS / statCount;

    evsBits = 1;

    for (i = 0; i < NUM_STATS; i++)
    {
        if (evSpread & evsBits)
            SetMonData(mon, MON_DATA_HP_EV + i, &evAmount);
        evsBits <<= 1;
    }

    CalculateMonStats(mon);
}

void CreateBattleTowerMon(struct Pokemon *mon, struct BattleTowerPokemon *src)
{
    s32 i;
    u8 value;

    CreateMon(mon, src->species, src->level, 0, TRUE, src->personality, OT_ID_PRESET, src->otId);

    for (i = 0; i < MAX_MON_MOVES; i++)
        SetMonMoveSlot(mon, src->moves[i], i);

    SetMonData(mon, MON_DATA_PP_BONUSES, &src->ppBonuses);
    SetMonData(mon, MON_DATA_HELD_ITEM, &src->heldItem);

    // Why is this commented out in FR/LG?
    /*
    StringCopy(nickname, src->nickname);

    if (nickname[0] == EXT_CTRL_CODE_BEGIN && nickname[1] == EXT_CTRL_CODE_JPN)
        language = LANGUAGE_JAPANESE;
    else
        language = GAME_LANGUAGE;

    SetMonData(mon, MON_DATA_LANGUAGE, &language);
    Text_StripExtCtrlCodes(nickname);
    */

    SetMonData(mon, MON_DATA_NICKNAME, &src->nickname);
    SetMonData(mon, MON_DATA_FRIENDSHIP, &src->friendship);
    SetMonData(mon, MON_DATA_HP_EV, &src->hpEV);
    SetMonData(mon, MON_DATA_ATK_EV, &src->attackEV);
    SetMonData(mon, MON_DATA_DEF_EV, &src->defenseEV);
    SetMonData(mon, MON_DATA_SPEED_EV, &src->speedEV);
    SetMonData(mon, MON_DATA_SPATK_EV, &src->spAttackEV);
    SetMonData(mon, MON_DATA_SPDEF_EV, &src->spDefenseEV);
    value = src->abilityNum;
    SetMonData(mon, MON_DATA_ABILITY_NUM, &value);
    value = src->hpIV;
    SetMonData(mon, MON_DATA_HP_IV, &value);
    value = src->attackIV;
    SetMonData(mon, MON_DATA_ATK_IV, &value);
    value = src->defenseIV;
    SetMonData(mon, MON_DATA_DEF_IV, &value);
    value = src->speedIV;
    SetMonData(mon, MON_DATA_SPEED_IV, &value);
    value = src->spAttackIV;
    SetMonData(mon, MON_DATA_SPATK_IV, &value);
    value = src->spDefenseIV;
    SetMonData(mon, MON_DATA_SPDEF_IV, &value);
    CalculateMonStats(mon);
}

static void CreateEventMon(struct Pokemon *mon, u16 species, u8 level, u8 fixedIV, u8 hasFixedPersonality, u32 fixedPersonality, u8 otIdType, u32 fixedOtId)
{
    bool32 isModernFatefulEncounter = TRUE;

    CreateMon(mon, species, level, fixedIV, hasFixedPersonality, fixedPersonality, otIdType, fixedOtId);
    SetMonData(mon, MON_DATA_MODERN_FATEFUL_ENCOUNTER, &isModernFatefulEncounter);
}

void ConvertPokemonToBattleTowerPokemon(struct Pokemon *mon, struct BattleTowerPokemon *dest)
{
    s32 i;
    u16 heldItem;

    dest->species = GetMonData(mon, MON_DATA_SPECIES, NULL);
    heldItem = GetMonData(mon, MON_DATA_HELD_ITEM, NULL);

    if (heldItem == ITEM_ENIGMA_BERRY)
        heldItem = 0;

    dest->heldItem = heldItem;

    for (i = 0; i < MAX_MON_MOVES; i++)
        dest->moves[i] = GetMonData(mon, MON_DATA_MOVE1 + i, NULL);

    dest->level = GetMonData(mon, MON_DATA_LEVEL, NULL);
    dest->ppBonuses = GetMonData(mon, MON_DATA_PP_BONUSES, NULL);
    dest->otId = GetMonData(mon, MON_DATA_OT_ID, NULL);
    dest->hpEV = GetMonData(mon, MON_DATA_HP_EV, NULL);
    dest->attackEV = GetMonData(mon, MON_DATA_ATK_EV, NULL);
    dest->defenseEV = GetMonData(mon, MON_DATA_DEF_EV, NULL);
    dest->speedEV = GetMonData(mon, MON_DATA_SPEED_EV, NULL);
    dest->spAttackEV = GetMonData(mon, MON_DATA_SPATK_EV, NULL);
    dest->spDefenseEV = GetMonData(mon, MON_DATA_SPDEF_EV, NULL);
    dest->friendship = GetMonData(mon, MON_DATA_FRIENDSHIP, NULL);
    dest->hpIV = GetMonData(mon, MON_DATA_HP_IV, NULL);
    dest->attackIV = GetMonData(mon, MON_DATA_ATK_IV, NULL);
    dest->defenseIV = GetMonData(mon, MON_DATA_DEF_IV, NULL);
    dest->speedIV  = GetMonData(mon, MON_DATA_SPEED_IV, NULL);
    dest->spAttackIV  = GetMonData(mon, MON_DATA_SPATK_IV, NULL);
    dest->spDefenseIV  = GetMonData(mon, MON_DATA_SPDEF_IV, NULL);
    dest->abilityNum = GetMonData(mon, MON_DATA_ABILITY_NUM, NULL);
    dest->personality = GetMonData(mon, MON_DATA_PERSONALITY, NULL);
    GetMonData(mon, MON_DATA_NICKNAME, dest->nickname);
}

static u16 CalculateBoxMonChecksum(struct BoxPokemon *boxMon)
{
    u16 checksum = 0;
    union PokemonSubstruct *substruct0 = GetSubstruct(boxMon, boxMon->personality, 0);
    union PokemonSubstruct *substruct1 = GetSubstruct(boxMon, boxMon->personality, 1);
    union PokemonSubstruct *substruct2 = GetSubstruct(boxMon, boxMon->personality, 2);
    union PokemonSubstruct *substruct3 = GetSubstruct(boxMon, boxMon->personality, 3);
    s32 i;

    for (i = 0; i < (s32)ARRAY_COUNT(substruct0->raw); i++)
        checksum += substruct0->raw[i];

    for (i = 0; i < (s32)ARRAY_COUNT(substruct1->raw); i++)
        checksum += substruct1->raw[i];

    for (i = 0; i < (s32)ARRAY_COUNT(substruct2->raw); i++)
        checksum += substruct2->raw[i];

    for (i = 0; i < (s32)ARRAY_COUNT(substruct3->raw); i++)
        checksum += substruct3->raw[i];

    return checksum;
}

#define CALC_STAT(base, iv, ev, statIndex, field)               \
{                                                               \
    u8 baseStat = gSpeciesInfo[species].base;                   \
    s32 n = (((2 * baseStat + iv + ev / 4) * level) / 100) + 5; \
    n = ModifyStatByNature(nature, n, statIndex);               \
    if (B_FRIENDSHIP_BOOST == TRUE)                             \
        n = n + ((n * 10 * friendship) / (MAX_FRIENDSHIP * 100));\
    SetMonData(mon, field, &n);                                 \
}

void CalculateMonStats(struct Pokemon *mon)
{
    s32 oldMaxHP = GetMonData(mon, MON_DATA_MAX_HP, NULL);
    s32 currentHP = GetMonData(mon, MON_DATA_HP, NULL);
    s32 hpIV = GetMonData(mon, MON_DATA_HYPER_TRAINED_HP) ? MAX_PER_STAT_IVS : GetMonData(mon, MON_DATA_HP_IV, NULL);
    s32 hpEV = GetMonData(mon, MON_DATA_HP_EV, NULL);
    s32 attackIV = GetMonData(mon, MON_DATA_HYPER_TRAINED_ATK) ? MAX_PER_STAT_IVS : GetMonData(mon, MON_DATA_ATK_IV, NULL);
    s32 attackEV = GetMonData(mon, MON_DATA_ATK_EV, NULL);
    s32 defenseIV = GetMonData(mon, MON_DATA_HYPER_TRAINED_DEF) ? MAX_PER_STAT_IVS : GetMonData(mon, MON_DATA_DEF_IV, NULL);
    s32 defenseEV = GetMonData(mon, MON_DATA_DEF_EV, NULL);
    s32 speedIV = GetMonData(mon, MON_DATA_HYPER_TRAINED_SPEED) ? MAX_PER_STAT_IVS : GetMonData(mon, MON_DATA_SPEED_IV, NULL);
    s32 speedEV = GetMonData(mon, MON_DATA_SPEED_EV, NULL);
    s32 spAttackIV = GetMonData(mon, MON_DATA_HYPER_TRAINED_SPATK) ? MAX_PER_STAT_IVS : GetMonData(mon, MON_DATA_SPATK_IV, NULL);
    s32 spAttackEV = GetMonData(mon, MON_DATA_SPATK_EV, NULL);
    s32 spDefenseIV = GetMonData(mon, MON_DATA_HYPER_TRAINED_SPDEF) ? MAX_PER_STAT_IVS : GetMonData(mon, MON_DATA_SPDEF_IV, NULL);
    s32 spDefenseEV = GetMonData(mon, MON_DATA_SPDEF_EV, NULL);
    u16 species = GetMonData(mon, MON_DATA_SPECIES, NULL);
    u8 friendship = GetMonData(mon, MON_DATA_FRIENDSHIP, NULL);
    s32 level = GetLevelFromMonExp(mon);
    s32 newMaxHP;

    u8 nature = GetMonData(mon, MON_DATA_HIDDEN_NATURE, NULL);

    SetMonData(mon, MON_DATA_LEVEL, &level);

    if (species == SPECIES_SHEDINJA)
    {
        newMaxHP = 1;
    }
    else
    {
        s32 n = 2 * gSpeciesInfo[species].baseHP + hpIV;
        newMaxHP = (((n + hpEV / 4) * level) / 100) + level + 10;
    }

    gBattleScripting.levelUpHP = newMaxHP - oldMaxHP;
    if (gBattleScripting.levelUpHP == 0)
        gBattleScripting.levelUpHP = 1;

    SetMonData(mon, MON_DATA_MAX_HP, &newMaxHP);

    CALC_STAT(baseAttack, attackIV, attackEV, STAT_ATK, MON_DATA_ATK)
    CALC_STAT(baseDefense, defenseIV, defenseEV, STAT_DEF, MON_DATA_DEF)
    CALC_STAT(baseSpeed, speedIV, speedEV, STAT_SPEED, MON_DATA_SPEED)
    CALC_STAT(baseSpAttack, spAttackIV, spAttackEV, STAT_SPATK, MON_DATA_SPATK)
    CALC_STAT(baseSpDefense, spDefenseIV, spDefenseEV, STAT_SPDEF, MON_DATA_SPDEF)

    if (species == SPECIES_SHEDINJA)
    {
        if (currentHP != 0 || oldMaxHP == 0)
            currentHP = 1;
        else
            return;
    }
    else
    {
        if (currentHP == 0 && oldMaxHP == 0)
            currentHP = newMaxHP;
        else if (currentHP != 0)
        {
            if (newMaxHP > oldMaxHP)
                currentHP += newMaxHP - oldMaxHP;
            if (currentHP <= 0)
                currentHP = 1;
            if (currentHP > newMaxHP)
                currentHP = newMaxHP;
        }
        else
            return;
    }

    SetMonData(mon, MON_DATA_HP, &currentHP);
}

void BoxMonToMon(struct BoxPokemon *src, struct Pokemon *dest)
{
    u32 value = 0;
    dest->box = *src;
    SetMonData(dest, MON_DATA_STATUS, &value);
    SetMonData(dest, MON_DATA_HP, &value);
    SetMonData(dest, MON_DATA_MAX_HP, &value);
    value = MAIL_NONE;
    SetMonData(dest, MON_DATA_MAIL, &value);
    CalculateMonStats(dest);
}

static u8 GetLevelFromMonExp(struct Pokemon *mon)
{
    u16 species = GetMonData(mon, MON_DATA_SPECIES, NULL);
    u32 exp = GetMonData(mon, MON_DATA_EXP, NULL);
    s32 level = 1;

    while (level <= MAX_LEVEL && gExperienceTables[gSpeciesInfo[species].growthRate][level] <= exp)
        level++;

    return level - 1;
}

u8 GetLevelFromBoxMonExp(struct BoxPokemon *boxMon)
{
    u16 species = GetBoxMonData(boxMon, MON_DATA_SPECIES, NULL);
    u32 exp = GetBoxMonData(boxMon, MON_DATA_EXP, NULL);
    s32 level = 1;

    while (level <= MAX_LEVEL && gExperienceTables[gSpeciesInfo[species].growthRate][level] <= exp)
        level++;

    return level - 1;
}

u16 GiveMoveToMon(struct Pokemon *mon, u16 move)
{
    return GiveMoveToBoxMon(&mon->box, move);
}

static u16 GiveMoveToBoxMon(struct BoxPokemon *boxMon, u16 move)
{
    s32 i;
    for (i = 0; i < MAX_MON_MOVES; i++)
    {
        u16 existingMove = GetBoxMonData(boxMon, MON_DATA_MOVE1 + i, NULL);
        if (!existingMove)
        {
            SetBoxMonData(boxMon, MON_DATA_MOVE1 + i, &move);
            SetBoxMonData(boxMon, MON_DATA_PP1 + i, &gMovesInfo[move].pp);
            return move;
        }
        if (existingMove == move)
            return MON_ALREADY_KNOWS_MOVE;
    }
    return MON_HAS_MAX_MOVES;
}

u16 GiveMoveToBattleMon(struct BattlePokemon *mon, u16 move)
{
    s32 i;

    for (i = 0; i < MAX_MON_MOVES; i++)
    {
        if (!mon->moves[i])
        {
            mon->moves[i] = move;
            mon->pp[i] = gMovesInfo[move].pp;
            return move;
        }
    }

    return MON_HAS_MAX_MOVES;
}

void SetMonMoveSlot(struct Pokemon *mon, u16 move, u8 slot)
{
    SetMonData(mon, MON_DATA_MOVE1 + slot, &move);
    SetMonData(mon, MON_DATA_PP1 + slot, &gMovesInfo[move].pp);
}

static void SetMonMoveSlot_KeepPP(struct Pokemon *mon, u16 move, u8 slot)
{
    u8 ppBonuses = GetMonData(mon, MON_DATA_PP_BONUSES, NULL);
    u8 currPP = GetMonData(mon, MON_DATA_PP1 + slot, NULL);
    u8 newPP = CalculatePPWithBonus(move, ppBonuses, slot);
    u16 finalPP = min(currPP, newPP);

    SetMonData(mon, MON_DATA_MOVE1 + slot, &move);
    SetMonData(mon, MON_DATA_PP1 + slot, &finalPP);
}

void SetBattleMonMoveSlot(struct BattlePokemon *mon, u16 move, u8 slot)
{
    mon->moves[slot] = move;
    mon->pp[slot] = gMovesInfo[move].pp;
}

static void GiveMonInitialMoveset(struct Pokemon *mon)
{
    GiveBoxMonInitialMoveset(&mon->box);
}

void GiveBoxMonInitialMoveset(struct BoxPokemon *boxMon)
{
    u16 species = GetBoxMonData(boxMon, MON_DATA_SPECIES, NULL);
    s32 level = GetLevelFromBoxMonExp(boxMon);
    s32 i;
    const struct LevelUpMove *learnset = GetSpeciesLevelUpLearnset(species);

    for (i = 0; learnset[i].move != LEVEL_UP_MOVE_END; i++)
    {
        if (learnset[i].level > level)
            break;
        if (learnset[i].level == 0)
            continue;
        if (GiveMoveToBoxMon(boxMon, learnset[i].move) == MON_HAS_MAX_MOVES)
            DeleteFirstMoveAndGiveMoveToBoxMon(boxMon, learnset[i].move);
    }
}

u16 MonTryLearningNewMove(struct Pokemon *mon, bool8 firstMove)
{
    u32 retVal = MOVE_NONE;
    u16 species = GetMonData(mon, MON_DATA_SPECIES, NULL);
    u8 level = GetMonData(mon, MON_DATA_LEVEL, NULL);
    const struct LevelUpMove *learnset = GetSpeciesLevelUpLearnset(species);

    // since you can learn more than one move per level
    // the game needs to know whether you decided to
    // learn it or keep the old set to avoid asking
    // you to learn the same move over and over again
    if (firstMove)
    {
        sLearningMoveTableID = 0;

        while (learnset[sLearningMoveTableID].level != level)
        {
            sLearningMoveTableID++;
            if (learnset[sLearningMoveTableID].move == LEVEL_UP_MOVE_END)
                return MOVE_NONE;
        }
    }

    if (learnset[sLearningMoveTableID].level == level)
    {
        gMoveToLearn = learnset[sLearningMoveTableID].move;
        sLearningMoveTableID++;
        retVal = GiveMoveToMon(mon, gMoveToLearn);
    }

    return retVal;
}

void DeleteFirstMoveAndGiveMoveToMon(struct Pokemon *mon, u16 move)
{
    s32 i;
    u16 moves[MAX_MON_MOVES];
    u8 pp[MAX_MON_MOVES];
    u8 ppBonuses;

    for (i = 0; i < MAX_MON_MOVES - 1; i++)
    {
        moves[i] = GetMonData(mon, MON_DATA_MOVE2 + i, NULL);
        pp[i] = GetMonData(mon, MON_DATA_PP2 + i, NULL);
    }

    ppBonuses = GetMonData(mon, MON_DATA_PP_BONUSES, NULL);
    ppBonuses >>= 2;
    moves[MAX_MON_MOVES - 1] = move;
    pp[MAX_MON_MOVES - 1] = gMovesInfo[move].pp;

    for (i = 0; i < MAX_MON_MOVES; i++)
    {
        SetMonData(mon, MON_DATA_MOVE1 + i, &moves[i]);
        SetMonData(mon, MON_DATA_PP1 + i, &pp[i]);
    }

    SetMonData(mon, MON_DATA_PP_BONUSES, &ppBonuses);
}

u16 MonTryLearningNewMoveEvolution(struct Pokemon *mon, bool8 firstMove)
{
    u16 species = GetMonData(mon, MON_DATA_SPECIES, NULL);
    u8 level = GetMonData(mon, MON_DATA_LEVEL, NULL);
    const struct LevelUpMove *learnset = GetSpeciesLevelUpLearnset(species);

    // Since you can learn more than one move per level,
    // the game needs to know whether you decided to
    // learn it or keep the old set to avoid asking
    // you to learn the same move over and over again.
    if (firstMove)
    {
        sLearningMoveTableID = 0;
    }
    while(learnset[sLearningMoveTableID].move != LEVEL_UP_MOVE_END)
    {
        while (learnset[sLearningMoveTableID].level == 0 || learnset[sLearningMoveTableID].level == level)
        {
            gMoveToLearn = learnset[sLearningMoveTableID].move;
            sLearningMoveTableID++;
            return GiveMoveToMon(mon, gMoveToLearn);
        }
        sLearningMoveTableID++;
    }
    return 0;
}

static void DeleteFirstMoveAndGiveMoveToBoxMon(struct BoxPokemon *boxMon, u16 move)
{
    s32 i;
    u16 moves[MAX_MON_MOVES];
    u8 pp[MAX_MON_MOVES];
    u8 ppBonuses;

    for (i = 0; i < MAX_MON_MOVES - 1; i++)
    {
        moves[i] = GetBoxMonData(boxMon, MON_DATA_MOVE2 + i, NULL);
        pp[i] = GetBoxMonData(boxMon, MON_DATA_PP2 + i, NULL);
    }

    ppBonuses = GetBoxMonData(boxMon, MON_DATA_PP_BONUSES, NULL);
    ppBonuses >>= 2;
    moves[MAX_MON_MOVES - 1] = move;
    pp[MAX_MON_MOVES - 1] = gMovesInfo[move].pp;

    for (i = 0; i < MAX_MON_MOVES; i++)
    {
        SetBoxMonData(boxMon, MON_DATA_MOVE1 + i, &moves[i]);
        SetBoxMonData(boxMon, MON_DATA_PP1 + i, &pp[i]);
    }

    SetBoxMonData(boxMon, MON_DATA_PP_BONUSES, &ppBonuses);
}

u8 CountAliveMonsInBattle(u8 caseId, u32 battler)
{
    s32 i;
    u8 retVal = 0;

    switch (caseId)
    {
    case BATTLE_ALIVE_EXCEPT_BATTLER:
        for (i = 0; i < MAX_BATTLERS_COUNT; i++)
        {
            if (i != battler && !(gAbsentBattlerFlags & gBitTable[i]))
                retVal++;
        }
        break;
    case BATTLE_ALIVE_SIDE:
        for (i = 0; i < MAX_BATTLERS_COUNT; i++)
        {
            if (GetBattlerSide(i) == GetBattlerSide(battler) && !(gAbsentBattlerFlags & gBitTable[i]))
                retVal++;
        }
        break;
    }
    return retVal;
}

u8 GetDefaultMoveTarget(u32 battler)
{
    u8 opposing = BATTLE_OPPOSITE(GetBattlerPosition(battler) & BIT_SIDE);

    if (!(gBattleTypeFlags & BATTLE_TYPE_DOUBLE))
        return GetBattlerAtPosition(opposing);
    if (CountAliveMonsInBattle(BATTLE_ALIVE_EXCEPT_BATTLER, battler) > 1)
    {
        u8 position;

        if ((Random() & 1) == 0)
            position = BATTLE_PARTNER(opposing);
        else
            position = opposing;
        return GetBattlerAtPosition(position);
    }
    else
    {
        if ((gAbsentBattlerFlags & gBitTable[opposing]))
            return GetBattlerAtPosition(BATTLE_PARTNER(opposing));
        else
            return GetBattlerAtPosition(opposing);
    }
}

u8 GetMonGender(struct Pokemon *mon)
{
    return GetBoxMonGender(&mon->box);
}

u8 GetBoxMonGender(struct BoxPokemon *boxMon)
{
    u16 species = GetBoxMonData(boxMon, MON_DATA_SPECIES, NULL);
    u32 personality = GetBoxMonData(boxMon, MON_DATA_PERSONALITY, NULL);

    switch (gSpeciesInfo[species].genderRatio)
    {
    case MON_MALE:
    case MON_FEMALE:
    case MON_GENDERLESS:
        return gSpeciesInfo[species].genderRatio;
    }

    if (gSpeciesInfo[species].genderRatio > (personality & 0xFF))
        return MON_FEMALE;
    else
        return MON_MALE;
}

u8 GetGenderFromSpeciesAndPersonality(u16 species, u32 personality)
{
    switch (gSpeciesInfo[species].genderRatio)
    {
    case MON_MALE:
    case MON_FEMALE:
    case MON_GENDERLESS:
        return gSpeciesInfo[species].genderRatio;
    }

    if (gSpeciesInfo[species].genderRatio > (personality & 0xFF))
        return MON_FEMALE;
    else
        return MON_MALE;
}

void SetMultiuseSpriteTemplateToPokemon(u16 speciesTag, u8 battlerPosition)
{
    if (gMonSpritesGfxPtr != NULL)
    {
        if (battlerPosition >= MAX_BATTLERS_COUNT)
            battlerPosition = 0;

        gMultiuseSpriteTemplate = gMonSpritesGfxPtr->templates[battlerPosition];
    }
    else
    {
        if (sMonSpritesGfxManager)
        {
            if (battlerPosition >= (s8)sMonSpritesGfxManager->battlePosition) // why a cast?!? changing the unk0_2 type to s8 causes extra shifts, but a cast is the correct fix. why, compiler?
                battlerPosition = 0;

            gMultiuseSpriteTemplate = sMonSpritesGfxManager->templates[battlerPosition];
        }
        else
        {
            if (battlerPosition >= MAX_BATTLERS_COUNT)
                battlerPosition = 0;

            gMultiuseSpriteTemplate = gSpriteTemplates_Battlers[battlerPosition];
        }
    }
    gMultiuseSpriteTemplate.paletteTag = speciesTag;
    gMultiuseSpriteTemplate.anims = gAnims_MonPic;
}

void SetMultiuseSpriteTemplateToTrainerBack(u16 trainerSpriteId, u8 battlerPosition)
{
    gMultiuseSpriteTemplate.paletteTag = trainerSpriteId;
    if (battlerPosition == B_POSITION_PLAYER_LEFT || battlerPosition == B_POSITION_PLAYER_RIGHT)
    {
        gMultiuseSpriteTemplate = sTrainerBackSpriteTemplates[trainerSpriteId];
        gMultiuseSpriteTemplate.anims = gTrainerBackAnimsPtrTable[trainerSpriteId];
    }
    else
    {
        if (gMonSpritesGfxPtr != NULL)
            gMultiuseSpriteTemplate = gMonSpritesGfxPtr->templates[battlerPosition];
        else
            gMultiuseSpriteTemplate = gSpriteTemplates_Battlers[battlerPosition];
        gMultiuseSpriteTemplate.anims = gTrainerFrontAnimsPtrTable[trainerSpriteId];
    }
}

void SetMultiuseSpriteTemplateToTrainerFront(u16 trainerPicId, u8 battlerPosition)
{
    if (gMonSpritesGfxPtr != NULL)
        gMultiuseSpriteTemplate = gMonSpritesGfxPtr->templates[battlerPosition];
    else
        gMultiuseSpriteTemplate = gSpriteTemplates_Battlers[battlerPosition];

    gMultiuseSpriteTemplate.paletteTag = trainerPicId;
    gMultiuseSpriteTemplate.anims = gTrainerFrontAnimsPtrTable[trainerPicId];
}

static void EncryptBoxMon(struct BoxPokemon *boxMon)
{
    u32 i;
    for (i = 0; i < ARRAY_COUNT(boxMon->secure.raw); i++)
    {
        boxMon->secure.raw[i] ^= boxMon->personality;
        boxMon->secure.raw[i] ^= boxMon->otId;
    }
}

static void DecryptBoxMon(struct BoxPokemon *boxMon)
{
    u32 i;
    for (i = 0; i < ARRAY_COUNT(boxMon->secure.raw); i++)
    {
        boxMon->secure.raw[i] ^= boxMon->otId;
        boxMon->secure.raw[i] ^= boxMon->personality;
    }
}

#define SUBSTRUCT_CASE(n, v1, v2, v3, v4)                               \
case n:                                                                 \
    {                                                                   \
    union PokemonSubstruct *substructs0 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs1 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs2 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs3 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs4 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs5 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs6 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs7 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs8 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs9 = boxMon->secure.substructs;    \
    union PokemonSubstruct *substructs10 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs11 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs12 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs13 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs14 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs15 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs16 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs17 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs18 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs19 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs20 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs21 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs22 = boxMon->secure.substructs;   \
    union PokemonSubstruct *substructs23 = boxMon->secure.substructs;   \
                                                                        \
        switch (substructType)                                          \
        {                                                               \
        case 0:                                                         \
            substruct = &substructs ## n [v1];                          \
            break;                                                      \
        case 1:                                                         \
            substruct = &substructs ## n [v2];                          \
            break;                                                      \
        case 2:                                                         \
            substruct = &substructs ## n [v3];                          \
            break;                                                      \
        case 3:                                                         \
            substruct = &substructs ## n [v4];                          \
            break;                                                      \
        }                                                               \
        break;                                                          \
    }                                                                   \

static union PokemonSubstruct *GetSubstruct(struct BoxPokemon *boxMon, u32 personality, u8 substructType)
{
    union PokemonSubstruct *substruct = NULL;

    switch (personality % 24)
    {
        SUBSTRUCT_CASE( 0,0,1,2,3)
        SUBSTRUCT_CASE( 1,0,1,3,2)
        SUBSTRUCT_CASE( 2,0,2,1,3)
        SUBSTRUCT_CASE( 3,0,3,1,2)
        SUBSTRUCT_CASE( 4,0,2,3,1)
        SUBSTRUCT_CASE( 5,0,3,2,1)
        SUBSTRUCT_CASE( 6,1,0,2,3)
        SUBSTRUCT_CASE( 7,1,0,3,2)
        SUBSTRUCT_CASE( 8,2,0,1,3)
        SUBSTRUCT_CASE( 9,3,0,1,2)
        SUBSTRUCT_CASE(10,2,0,3,1)
        SUBSTRUCT_CASE(11,3,0,2,1)
        SUBSTRUCT_CASE(12,1,2,0,3)
        SUBSTRUCT_CASE(13,1,3,0,2)
        SUBSTRUCT_CASE(14,2,1,0,3)
        SUBSTRUCT_CASE(15,3,1,0,2)
        SUBSTRUCT_CASE(16,2,3,0,1)
        SUBSTRUCT_CASE(17,3,2,0,1)
        SUBSTRUCT_CASE(18,1,2,3,0)
        SUBSTRUCT_CASE(19,1,3,2,0)
        SUBSTRUCT_CASE(20,2,1,3,0)
        SUBSTRUCT_CASE(21,3,1,2,0)
        SUBSTRUCT_CASE(22,2,3,1,0)
        SUBSTRUCT_CASE(23,3,2,1,0)
    }

    return substruct;
}

/* GameFreak called GetMonData with either 2 or 3 arguments, for type
 * safety we have a GetMonData macro (in include/pokemon.h) which
 * dispatches to either GetMonData2 or GetMonData3 based on the number
 * of arguments. */
u32 GetMonData3(struct Pokemon *mon, s32 field, u8 *data)
{
    u32 ret;

    switch (field)
    {
    case MON_DATA_STATUS:
        ret = mon->status;
        break;
    case MON_DATA_LEVEL:
        ret = mon->level;
        break;
    case MON_DATA_HP:
        ret = mon->hp;
        break;
    case MON_DATA_MAX_HP:
        ret = mon->maxHP;
        break;
    case MON_DATA_ATK:
        ret = mon->attack;
        break;
    case MON_DATA_DEF:
        ret = mon->defense;
        break;
    case MON_DATA_SPEED:
        ret = mon->speed;
        break;
    case MON_DATA_SPATK:
        ret = mon->spAttack;
        break;
    case MON_DATA_SPDEF:
        ret = mon->spDefense;
        break;
    case MON_DATA_ATK2:
        ret = mon->attack;
        break;
    case MON_DATA_DEF2:
        ret = mon->defense;
        break;
    case MON_DATA_SPEED2:
        ret = mon->speed;
        break;
    case MON_DATA_SPATK2:
        ret = mon->spAttack;
        break;
    case MON_DATA_SPDEF2:
        ret = mon->spDefense;
        break;
    case MON_DATA_MAIL:
        ret = mon->mail;
        break;
    default:
        ret = GetBoxMonData(&mon->box, field, data);
        break;
    }
    return ret;
}

u32 GetMonData2(struct Pokemon *mon, s32 field)
{
    return GetMonData3(mon, field, NULL);
}

struct EvolutionTrackerBitfield
{
    u16 a: 5;
    u16 b: 4;
    u16 unused: 7;
};

union EvolutionTracker
{
    u16 value;
    struct EvolutionTrackerBitfield asField;
};

/* GameFreak called GetBoxMonData with either 2 or 3 arguments, for type
 * safety we have a GetBoxMonData macro (in include/pokemon.h) which
 * dispatches to either GetBoxMonData2 or GetBoxMonData3 based on the
 * number of arguments. */
u32 GetBoxMonData3(struct BoxPokemon *boxMon, s32 field, u8 *data)
{
    s32 i;
    u32 retVal = 0;
    struct PokemonSubstruct0 *substruct0 = NULL;
    struct PokemonSubstruct1 *substruct1 = NULL;
    struct PokemonSubstruct2 *substruct2 = NULL;
    struct PokemonSubstruct3 *substruct3 = NULL;
    union EvolutionTracker evoTracker;

    // Any field greater than MON_DATA_ENCRYPT_SEPARATOR is encrypted and must be treated as such
    if (field > MON_DATA_ENCRYPT_SEPARATOR)
    {
        substruct0 = &(GetSubstruct(boxMon, boxMon->personality, 0)->type0);
        substruct1 = &(GetSubstruct(boxMon, boxMon->personality, 1)->type1);
        substruct2 = &(GetSubstruct(boxMon, boxMon->personality, 2)->type2);
        substruct3 = &(GetSubstruct(boxMon, boxMon->personality, 3)->type3);

        DecryptBoxMon(boxMon);

        if (CalculateBoxMonChecksum(boxMon) != boxMon->checksum)
        {
            boxMon->isBadEgg = TRUE;
            boxMon->isEgg = TRUE;
            substruct3->isEgg = TRUE;
        }

        switch (field)
        {
        case MON_DATA_NICKNAME:
        {
            if (boxMon->isBadEgg)
            {
                for (retVal = 0;
                    retVal < POKEMON_NAME_LENGTH && gText_BadEgg[retVal] != EOS;
                    data[retVal] = gText_BadEgg[retVal], retVal++) {}

                data[retVal] = EOS;
            }
            else if (boxMon->isEgg)
            {
                StringCopy(data, gText_EggNickname);
                retVal = StringLength(data);
            }
            else if (boxMon->language == LANGUAGE_JAPANESE)
            {
                data[0] = EXT_CTRL_CODE_BEGIN;
                data[1] = EXT_CTRL_CODE_JPN;

                for (retVal = 2, i = 0;
                    i < 5 && boxMon->nickname[i] != EOS;
                    data[retVal] = boxMon->nickname[i], retVal++, i++) {}

                data[retVal++] = EXT_CTRL_CODE_BEGIN;
                data[retVal++] = EXT_CTRL_CODE_ENG;
                data[retVal] = EOS;
            }
            else
            {
                // if (DECAP_ENABLED && !DECAP_NICKNAMES && IsStringAddrSafe(data, POKEMON_NAME_LENGTH))
                //         *data++ = CHAR_FIXED_CASE;
                retVal = 0;
                while (retVal < min(sizeof(boxMon->nickname), POKEMON_NAME_LENGTH))
                {
                    data[retVal] = boxMon->nickname[retVal];
                    retVal++;
                }

                // Vanilla Pokémon have 0s in nickname11 and nickname12
                // so if both are 0 we assume that this is a vanilla
                // Pokémon and replace them with EOS. This means that
                // two CHAR_SPACE at the end of a nickname are trimmed.
                if (POKEMON_NAME_LENGTH >= 12)
                {
                    if (substruct0->nickname11 == 0 && substruct0->nickname12 == 0)
                    {
                        data[retVal++] = EOS;
                        data[retVal++] = EOS;
                    }
                    else
                    {
                        data[retVal++] = substruct0->nickname11;
                        data[retVal++] = substruct0->nickname12;
                    }
                }
                else if (POKEMON_NAME_LENGTH >= 11)
                {
                    if (substruct0->nickname11 == 0)
                    {
                        data[retVal++] = EOS;
                    }
                    else
                    {
                        data[retVal++] = substruct0->nickname11;
                    }
                }

                data[retVal] = EOS;
            }
            break;
        }
        case MON_DATA_SPECIES:
            retVal = boxMon->isBadEgg ? SPECIES_EGG : substruct0->species;
            break;
        case MON_DATA_HELD_ITEM:
            retVal = substruct0->heldItem;
            break;
        case MON_DATA_EXP:
            retVal = substruct0->experience;
            break;
        case MON_DATA_PP_BONUSES:
            retVal = substruct0->ppBonuses;
            break;
        case MON_DATA_FRIENDSHIP:
            retVal = substruct0->friendship;
            break;
        case MON_DATA_MOVE1:
            retVal = substruct1->move1;
            break;
        case MON_DATA_MOVE2:
            retVal = substruct1->move2;
            break;
        case MON_DATA_MOVE3:
            retVal = substruct1->move3;
            break;
        case MON_DATA_MOVE4:
            retVal = substruct1->move4;
            break;
        case MON_DATA_PP1:
            retVal = substruct1->pp1;
            break;
        case MON_DATA_PP2:
            retVal = substruct1->pp2;
            break;
        case MON_DATA_PP3:
            retVal = substruct1->pp3;
            break;
        case MON_DATA_PP4:
            retVal = substruct1->pp4;
            break;
        case MON_DATA_HP_EV:
            retVal = substruct2->hpEV;
            break;
        case MON_DATA_ATK_EV:
            retVal = substruct2->attackEV;
            break;
        case MON_DATA_DEF_EV:
            retVal = substruct2->defenseEV;
            break;
        case MON_DATA_SPEED_EV:
            retVal = substruct2->speedEV;
            break;
        case MON_DATA_SPATK_EV:
            retVal = substruct2->spAttackEV;
            break;
        case MON_DATA_SPDEF_EV:
            retVal = substruct2->spDefenseEV;
            break;
        case MON_DATA_COOL:
            retVal = substruct2->cool;
            break;
        case MON_DATA_BEAUTY:
            retVal = substruct2->beauty;
            break;
        case MON_DATA_CUTE:
            retVal = substruct2->cute;
            break;
        case MON_DATA_SMART:
            retVal = substruct2->smart;
            break;
        case MON_DATA_TOUGH:
            retVal = substruct2->tough;
            break;
        case MON_DATA_SHEEN:
            retVal = substruct2->sheen;
            break;
        case MON_DATA_POKERUS:
            retVal = substruct3->pokerus;
            break;
        case MON_DATA_MET_LOCATION:
            retVal = substruct3->metLocation;
            break;
        case MON_DATA_MET_LEVEL:
            retVal = substruct3->metLevel;
            break;
        case MON_DATA_MET_GAME:
            retVal = substruct3->metGame;
            break;
        case MON_DATA_POKEBALL:
            retVal = substruct0->pokeball;
            break;
        case MON_DATA_OT_GENDER:
            retVal = substruct3->otGender;
            break;
        case MON_DATA_HP_IV:
            retVal = substruct3->hpIV;
            break;
        case MON_DATA_ATK_IV:
            retVal = substruct3->attackIV;
            break;
        case MON_DATA_DEF_IV:
            retVal = substruct3->defenseIV;
            break;
        case MON_DATA_SPEED_IV:
            retVal = substruct3->speedIV;
            break;
        case MON_DATA_SPATK_IV:
            retVal = substruct3->spAttackIV;
            break;
        case MON_DATA_SPDEF_IV:
            retVal = substruct3->spDefenseIV;
            break;
        case MON_DATA_IS_EGG:
            retVal = substruct3->isEgg;
            break;
        case MON_DATA_ABILITY_NUM:
            retVal = substruct3->abilityNum;
            break;
        case MON_DATA_COOL_RIBBON:
            retVal = substruct3->coolRibbon;
            break;
        case MON_DATA_BEAUTY_RIBBON:
            retVal = substruct3->beautyRibbon;
            break;
        case MON_DATA_CUTE_RIBBON:
            retVal = substruct3->cuteRibbon;
            break;
        case MON_DATA_SMART_RIBBON:
            retVal = substruct3->smartRibbon;
            break;
        case MON_DATA_TOUGH_RIBBON:
            retVal = substruct3->toughRibbon;
            break;
        case MON_DATA_CHAMPION_RIBBON:
            retVal = substruct3->championRibbon;
            break;
        case MON_DATA_WINNING_RIBBON:
            retVal = substruct3->winningRibbon;
            break;
        case MON_DATA_VICTORY_RIBBON:
            retVal = substruct3->victoryRibbon;
            break;
        case MON_DATA_ARTIST_RIBBON:
            retVal = substruct3->artistRibbon;
            break;
        case MON_DATA_EFFORT_RIBBON:
            retVal = substruct3->effortRibbon;
            break;
        case MON_DATA_MARINE_RIBBON:
            retVal = substruct3->marineRibbon;
            break;
        case MON_DATA_LAND_RIBBON:
            retVal = substruct3->landRibbon;
            break;
        case MON_DATA_SKY_RIBBON:
            retVal = substruct3->skyRibbon;
            break;
        case MON_DATA_COUNTRY_RIBBON:
            retVal = substruct3->countryRibbon;
            break;
        case MON_DATA_NATIONAL_RIBBON:
            retVal = substruct3->nationalRibbon;
            break;
        case MON_DATA_EARTH_RIBBON:
            retVal = substruct3->earthRibbon;
            break;
        case MON_DATA_WORLD_RIBBON:
            retVal = substruct3->worldRibbon;
            break;
        case MON_DATA_MODERN_FATEFUL_ENCOUNTER:
            retVal = substruct3->modernFatefulEncounter;
            break;
        case MON_DATA_SPECIES_OR_EGG:
            retVal = substruct0->species;
            if (substruct0->species && (substruct3->isEgg || boxMon->isBadEgg))
                retVal = SPECIES_EGG;
            break;
        case MON_DATA_IVS:
            retVal = substruct3->hpIV
                    | (substruct3->attackIV << 5)
                    | (substruct3->defenseIV << 10)
                    | (substruct3->speedIV << 15)
                    | (substruct3->spAttackIV << 20)
                    | (substruct3->spDefenseIV << 25);
            break;
        case MON_DATA_KNOWN_MOVES:
            if (substruct0->species && !substruct3->isEgg)
            {
                u16 *moves = (u16 *)data;
                s32 i = 0;

                while (moves[i] != MOVES_COUNT)
                {
                    u16 move = moves[i];
                    if (substruct1->move1 == move
                        || substruct1->move2 == move
                        || substruct1->move3 == move
                        || substruct1->move4 == move)
                        retVal |= gBitTable[i];
                    i++;
                }
            }
            break;
        case MON_DATA_RIBBON_COUNT:
            retVal = 0;
            if (substruct0->species && !substruct3->isEgg)
            {
                retVal += substruct3->coolRibbon;
                retVal += substruct3->beautyRibbon;
                retVal += substruct3->cuteRibbon;
                retVal += substruct3->smartRibbon;
                retVal += substruct3->toughRibbon;
                retVal += substruct3->championRibbon;
                retVal += substruct3->winningRibbon;
                retVal += substruct3->victoryRibbon;
                retVal += substruct3->artistRibbon;
                retVal += substruct3->effortRibbon;
                retVal += substruct3->marineRibbon;
                retVal += substruct3->landRibbon;
                retVal += substruct3->skyRibbon;
                retVal += substruct3->countryRibbon;
                retVal += substruct3->nationalRibbon;
                retVal += substruct3->earthRibbon;
                retVal += substruct3->worldRibbon;
            }
            break;
        case MON_DATA_RIBBONS:
            retVal = 0;
            if (substruct0->species && !substruct3->isEgg)
            {
                retVal = substruct3->championRibbon
                    | (substruct3->coolRibbon << 1)
                    | (substruct3->beautyRibbon << 4)
                    | (substruct3->cuteRibbon << 7)
                    | (substruct3->smartRibbon << 10)
                    | (substruct3->toughRibbon << 13)
                    | (substruct3->winningRibbon << 16)
                    | (substruct3->victoryRibbon << 17)
                    | (substruct3->artistRibbon << 18)
                    | (substruct3->effortRibbon << 19)
                    | (substruct3->marineRibbon << 20)
                    | (substruct3->landRibbon << 21)
                    | (substruct3->skyRibbon << 22)
                    | (substruct3->countryRibbon << 23)
                    | (substruct3->nationalRibbon << 24)
                    | (substruct3->earthRibbon << 25)
                    | (substruct3->worldRibbon << 26);
            }
            break;
        case MON_DATA_HYPER_TRAINED_HP:
            retVal = substruct1->hyperTrainedHP;
            break;
        case MON_DATA_HYPER_TRAINED_ATK:
            retVal = substruct1->hyperTrainedAttack;
            break;
        case MON_DATA_HYPER_TRAINED_DEF:
            retVal = substruct1->hyperTrainedDefense;
            break;
        case MON_DATA_HYPER_TRAINED_SPEED:
            retVal = substruct1->hyperTrainedSpeed;
            break;
        case MON_DATA_HYPER_TRAINED_SPATK:
            retVal = substruct1->hyperTrainedSpAttack;
            break;
        case MON_DATA_HYPER_TRAINED_SPDEF:
            retVal = substruct1->hyperTrainedSpDefense;
            break;
        case MON_DATA_IS_SHADOW:
            retVal = substruct3->isShadow;
            break;
        case MON_DATA_DYNAMAX_LEVEL:
            retVal = substruct3->dynamaxLevel;
            break;
        case MON_DATA_GIGANTAMAX_FACTOR:
            retVal = substruct3->gigantamaxFactor;
            break;
        case MON_DATA_TERA_TYPE:
        {
            if (substruct0->teraType == 0)
            {
                const u8 *types = gSpeciesInfo[substruct0->species].types;
                retVal = (boxMon->personality & 0x1) == 0 ? types[0] : types[1];
            }
            else
            {
                retVal = substruct0->teraType - 1;
            }
            break;
        }
        case MON_DATA_EVOLUTION_TRACKER:
            evoTracker.asField.a = substruct1->evolutionTracker1;
            evoTracker.asField.b = substruct1->evolutionTracker2;
            evoTracker.asField.unused = 0; // fix for non-modern?
            retVal = evoTracker.value;
            break;
        default:
            break;
        }
    }
    else
    {
        switch (field)
        {
        case MON_DATA_STATUS:
            retVal = UncompressStatus(boxMon->compressedStatus);
            break;
        case MON_DATA_HP_LOST:
            retVal = boxMon->hpLost;
            break;
        case MON_DATA_PERSONALITY:
            retVal = boxMon->personality;
            break;
        case MON_DATA_OT_ID:
            retVal = boxMon->otId;
            break;
        case MON_DATA_LANGUAGE:
            retVal = boxMon->language;
            break;
        case MON_DATA_SANITY_IS_BAD_EGG:
            retVal = boxMon->isBadEgg;
            break;
        case MON_DATA_SANITY_HAS_SPECIES:
            retVal = boxMon->hasSpecies;
            break;
        case MON_DATA_SANITY_IS_EGG:
            retVal = boxMon->isEgg;
            break;
        case MON_DATA_OT_NAME:
        {
            // if (DECAP_ENABLED && !DECAP_NICKNAMES && IsStringAddrSafe(data, PLAYER_NAME_LENGTH))
            //     *data++ = CHAR_FIXED_CASE;
            retVal = 0;

            while (retVal < PLAYER_NAME_LENGTH)
            {
                data[retVal] = boxMon->otName[retVal];
                retVal++;
            }

            data[retVal] = EOS;
            break;
        }
        case MON_DATA_MARKINGS:
            retVal = boxMon->markings;
            break;
        case MON_DATA_CHECKSUM:
            retVal = boxMon->checksum;
            break;
        case MON_DATA_IS_SHINY:
        {
            u32 shinyValue = GET_SHINY_VALUE(boxMon->otId, boxMon->personality);
            retVal = (shinyValue < SHINY_ODDS) ^ boxMon->shinyModifier;
            break;
        }
        case MON_DATA_HIDDEN_NATURE:
        {
            u32 nature = GetNatureFromPersonality(boxMon->personality);
            retVal = nature ^ boxMon->hiddenNatureModifier;
            break;
        }
        default:
            break;
        }
    }

    if (field > MON_DATA_ENCRYPT_SEPARATOR)
        EncryptBoxMon(boxMon);

    return retVal;
}

u32 GetBoxMonData2(struct BoxPokemon *boxMon, s32 field)
{
    return GetBoxMonData3(boxMon, field, NULL);
}

#define SET8(lhs) (lhs) = *data
#define SET16(lhs) (lhs) = data[0] + (data[1] << 8)
#define SET32(lhs) (lhs) = data[0] + (data[1] << 8) + (data[2] << 16) + (data[3] << 24)


void SetMonData(struct Pokemon *mon, s32 field, const void *dataArg)
{
    const u8 *data = dataArg;

    switch (field)
    {
    case MON_DATA_STATUS:
        SET32(mon->status);
        SetBoxMonData(&mon->box, MON_DATA_STATUS, dataArg);
        break;
    case MON_DATA_LEVEL:
        SET8(mon->level);
        break;
    case MON_DATA_HP:
    {
        u32 hpLost;
        SET16(mon->hp);
        hpLost = mon->maxHP - mon->hp;
        SetBoxMonData(&mon->box, MON_DATA_HP_LOST, &hpLost);
        break;
    }
    case MON_DATA_HP_LOST:
    {
        u32 hpLost;
        SET16(hpLost);
        mon->hp = mon->maxHP - hpLost;
        SetBoxMonData(&mon->box, MON_DATA_HP_LOST, &hpLost);
        break;
    }
    case MON_DATA_MAX_HP:
        SET16(mon->maxHP);
        break;
    case MON_DATA_ATK:
        SET16(mon->attack);
        break;
    case MON_DATA_DEF:
        SET16(mon->defense);
        break;
    case MON_DATA_SPEED:
        SET16(mon->speed);
        break;
    case MON_DATA_SPATK:
        SET16(mon->spAttack);
        break;
    case MON_DATA_SPDEF:
        SET16(mon->spDefense);
        break;
    case MON_DATA_MAIL:
        SET8(mon->mail);
        break;
    case MON_DATA_SPECIES_OR_EGG:
        break;
    default:
        SetBoxMonData(&mon->box, field, data);
        break;
    }
}

void SetBoxMonData(struct BoxPokemon *boxMon, s32 field, const void *dataArg)
{
    const u8 *data = dataArg;

    struct PokemonSubstruct0 *substruct0 = NULL;
    struct PokemonSubstruct1 *substruct1 = NULL;
    struct PokemonSubstruct2 *substruct2 = NULL;
    struct PokemonSubstruct3 *substruct3 = NULL;

    if (field > MON_DATA_ENCRYPT_SEPARATOR)
    {
        substruct0 = &(GetSubstruct(boxMon, boxMon->personality, 0)->type0);
        substruct1 = &(GetSubstruct(boxMon, boxMon->personality, 1)->type1);
        substruct2 = &(GetSubstruct(boxMon, boxMon->personality, 2)->type2);
        substruct3 = &(GetSubstruct(boxMon, boxMon->personality, 3)->type3);

        DecryptBoxMon(boxMon);

        if (CalculateBoxMonChecksum(boxMon) != boxMon->checksum)
        {
            boxMon->isBadEgg = TRUE;
            boxMon->isEgg = TRUE;
            substruct3->isEgg = TRUE;
            EncryptBoxMon(boxMon);
            return;
        }

        switch (field)
        {
        case MON_DATA_NICKNAME:
        {
            s32 i;
            for (i = 0; i < min(sizeof(boxMon->nickname), POKEMON_NAME_LENGTH); i++)
                boxMon->nickname[i] = data[i];
            if (POKEMON_NAME_LENGTH >= 11)
                substruct0->nickname11 = data[10];
            if (POKEMON_NAME_LENGTH >= 12)
                substruct0->nickname12 = data[11];
            break;
        }
        case MON_DATA_SPECIES:
        {
            SET16(substruct0->species);
            if (substruct0->species)
                boxMon->hasSpecies = TRUE;
            else
                boxMon->hasSpecies = FALSE;
            break;
        }
        case MON_DATA_HELD_ITEM:
            SET16(substruct0->heldItem);
            break;
        case MON_DATA_EXP:
            SET32(substruct0->experience);
            break;
        case MON_DATA_PP_BONUSES:
            SET8(substruct0->ppBonuses);
            break;
        case MON_DATA_FRIENDSHIP:
            SET8(substruct0->friendship);
            break;
        case MON_DATA_MOVE1:
            SET16(substruct1->move1);
            break;
        case MON_DATA_MOVE2:
            SET16(substruct1->move2);
            break;
        case MON_DATA_MOVE3:
            SET16(substruct1->move3);
            break;
        case MON_DATA_MOVE4:
            SET16(substruct1->move4);
            break;
        case MON_DATA_PP1:
            SET8(substruct1->pp1);
            break;
        case MON_DATA_PP2:
            SET8(substruct1->pp2);
            break;
        case MON_DATA_PP3:
            SET8(substruct1->pp3);
            break;
        case MON_DATA_PP4:
            SET8(substruct1->pp4);
            break;
        case MON_DATA_HP_EV:
            SET8(substruct2->hpEV);
            break;
        case MON_DATA_ATK_EV:
            SET8(substruct2->attackEV);
            break;
        case MON_DATA_DEF_EV:
            SET8(substruct2->defenseEV);
            break;
        case MON_DATA_SPEED_EV:
            SET8(substruct2->speedEV);
            break;
        case MON_DATA_SPATK_EV:
            SET8(substruct2->spAttackEV);
            break;
        case MON_DATA_SPDEF_EV:
            SET8(substruct2->spDefenseEV);
            break;
        case MON_DATA_COOL:
            SET8(substruct2->cool);
            break;
        case MON_DATA_BEAUTY:
            SET8(substruct2->beauty);
            break;
        case MON_DATA_CUTE:
            SET8(substruct2->cute);
            break;
        case MON_DATA_SMART:
            SET8(substruct2->smart);
            break;
        case MON_DATA_TOUGH:
            SET8(substruct2->tough);
            break;
        case MON_DATA_SHEEN:
            SET8(substruct2->sheen);
            break;
        case MON_DATA_POKERUS:
            SET8(substruct3->pokerus);
            break;
        case MON_DATA_MET_LOCATION:
            SET8(substruct3->metLocation);
            break;
        case MON_DATA_MET_LEVEL:
        {
            u8 metLevel = *data;
            substruct3->metLevel = metLevel;
            break;
        }
        case MON_DATA_MET_GAME:
            SET8(substruct3->metGame);
            break;
        case MON_DATA_POKEBALL:
        {
            u8 pokeball = *data;
            substruct0->pokeball = pokeball;
            break;
        }
        case MON_DATA_OT_GENDER:
            SET8(substruct3->otGender);
            break;
        case MON_DATA_HP_IV:
            SET8(substruct3->hpIV);
            break;
        case MON_DATA_ATK_IV:
            SET8(substruct3->attackIV);
            break;
        case MON_DATA_DEF_IV:
            SET8(substruct3->defenseIV);
            break;
        case MON_DATA_SPEED_IV:
            SET8(substruct3->speedIV);
            break;
        case MON_DATA_SPATK_IV:
            SET8(substruct3->spAttackIV);
            break;
        case MON_DATA_SPDEF_IV:
            SET8(substruct3->spDefenseIV);
            break;
        case MON_DATA_IS_EGG:
            SET8(substruct3->isEgg);
            if (substruct3->isEgg)
                boxMon->isEgg = TRUE;
            else
                boxMon->isEgg = FALSE;
            break;
        case MON_DATA_ABILITY_NUM:
            SET8(substruct3->abilityNum);
            break;
        case MON_DATA_COOL_RIBBON:
            SET8(substruct3->coolRibbon);
            break;
        case MON_DATA_BEAUTY_RIBBON:
            SET8(substruct3->beautyRibbon);
            break;
        case MON_DATA_CUTE_RIBBON:
            SET8(substruct3->cuteRibbon);
            break;
        case MON_DATA_SMART_RIBBON:
            SET8(substruct3->smartRibbon);
            break;
        case MON_DATA_TOUGH_RIBBON:
            SET8(substruct3->toughRibbon);
            break;
        case MON_DATA_CHAMPION_RIBBON:
            SET8(substruct3->championRibbon);
            break;
        case MON_DATA_WINNING_RIBBON:
            SET8(substruct3->winningRibbon);
            break;
        case MON_DATA_VICTORY_RIBBON:
            SET8(substruct3->victoryRibbon);
            break;
        case MON_DATA_ARTIST_RIBBON:
            SET8(substruct3->artistRibbon);
            break;
        case MON_DATA_EFFORT_RIBBON:
            SET8(substruct3->effortRibbon);
            break;
        case MON_DATA_MARINE_RIBBON:
            SET8(substruct3->marineRibbon);
            break;
        case MON_DATA_LAND_RIBBON:
            SET8(substruct3->landRibbon);
            break;
        case MON_DATA_SKY_RIBBON:
            SET8(substruct3->skyRibbon);
            break;
        case MON_DATA_COUNTRY_RIBBON:
            SET8(substruct3->countryRibbon);
            break;
        case MON_DATA_NATIONAL_RIBBON:
            SET8(substruct3->nationalRibbon);
            break;
        case MON_DATA_EARTH_RIBBON:
            SET8(substruct3->earthRibbon);
            break;
        case MON_DATA_WORLD_RIBBON:
            SET8(substruct3->worldRibbon);
            break;
        case MON_DATA_MODERN_FATEFUL_ENCOUNTER:
            SET8(substruct3->modernFatefulEncounter);
            break;
        case MON_DATA_IVS:
        {
            u32 ivs = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
            substruct3->hpIV = ivs & MAX_IV_MASK;
            substruct3->attackIV = (ivs >> 5) & MAX_IV_MASK;
            substruct3->defenseIV = (ivs >> 10) & MAX_IV_MASK;
            substruct3->speedIV = (ivs >> 15) & MAX_IV_MASK;
            substruct3->spAttackIV = (ivs >> 20) & MAX_IV_MASK;
            substruct3->spDefenseIV = (ivs >> 25) & MAX_IV_MASK;
            break;
        }
        case MON_DATA_HYPER_TRAINED_HP:
            SET8(substruct1->hyperTrainedHP);
            break;
        case MON_DATA_HYPER_TRAINED_ATK:
            SET8(substruct1->hyperTrainedAttack);
            break;
        case MON_DATA_HYPER_TRAINED_DEF:
            SET8(substruct1->hyperTrainedDefense);
            break;
        case MON_DATA_HYPER_TRAINED_SPEED:
            SET8(substruct1->hyperTrainedSpeed);
            break;
        case MON_DATA_HYPER_TRAINED_SPATK:
            SET8(substruct1->hyperTrainedSpAttack);
            break;
        case MON_DATA_HYPER_TRAINED_SPDEF:
            SET8(substruct1->hyperTrainedSpDefense);
            break;
        case MON_DATA_IS_SHADOW:
            SET8(substruct3->isShadow);
            break;
        case MON_DATA_DYNAMAX_LEVEL:
            SET8(substruct3->dynamaxLevel);
            break;
        case MON_DATA_GIGANTAMAX_FACTOR:
            SET8(substruct3->gigantamaxFactor);
            break;
        case MON_DATA_TERA_TYPE:
        {
            u32 teraType;
            SET8(teraType);
            substruct0->teraType = 1 + teraType;
            break;
        }
        case MON_DATA_EVOLUTION_TRACKER:
        {
            union EvolutionTracker evoTracker;
            u32 evoTrackerValue;
            SET32(evoTrackerValue);
            evoTracker.value = evoTrackerValue;
            substruct1->evolutionTracker1 = evoTracker.asField.a;
            substruct1->evolutionTracker2 = evoTracker.asField.b;
            break;
        }
        default:
            break;
        }
    }
    else
    {
        switch (field)
        {
        case MON_DATA_STATUS:
        {
            u32 status;
            SET32(status);
            boxMon->compressedStatus = CompressStatus(status);
            break;
        }
        case MON_DATA_HP_LOST:
            SET16(boxMon->hpLost);
            break;
        case MON_DATA_PERSONALITY:
            SET32(boxMon->personality);
            break;
        case MON_DATA_OT_ID:
            SET32(boxMon->otId);
            break;
        case MON_DATA_LANGUAGE:
            SET8(boxMon->language);
            break;
        case MON_DATA_SANITY_IS_BAD_EGG:
            SET8(boxMon->isBadEgg);
            break;
        case MON_DATA_SANITY_HAS_SPECIES:
            SET8(boxMon->hasSpecies);
            break;
        case MON_DATA_SANITY_IS_EGG:
            SET8(boxMon->isEgg);
            break;
        case MON_DATA_OT_NAME:
        {
            s32 i;
            for (i = 0; i < PLAYER_NAME_LENGTH; i++)
                boxMon->otName[i] = data[i];
            break;
        }
        case MON_DATA_MARKINGS:
            SET8(boxMon->markings);
            break;
        case MON_DATA_CHECKSUM:
            SET16(boxMon->checksum);
            break;
        case MON_DATA_IS_SHINY:
        {
            u32 shinyValue = GET_SHINY_VALUE(boxMon->otId, boxMon->personality);
            bool32 isShiny;
            SET8(isShiny);
            boxMon->shinyModifier = (shinyValue < SHINY_ODDS) ^ isShiny;
            break;
        }
        case MON_DATA_HIDDEN_NATURE:
        {
            u32 nature = GetNatureFromPersonality(boxMon->personality);
            u32 hiddenNature;
            SET8(hiddenNature);
            boxMon->hiddenNatureModifier = nature ^ hiddenNature;
            break;
        }
        }
    }

    if (field > MON_DATA_ENCRYPT_SEPARATOR)
    {
        boxMon->checksum = CalculateBoxMonChecksum(boxMon);
        EncryptBoxMon(boxMon);
    }
}


void CopyMon(void *dest, void *src, size_t size)
{
    memcpy(dest, src, size);
}

u8 GiveMonToPlayer(struct Pokemon *mon)
{
    s32 i;

    SetMonData(mon, MON_DATA_OT_NAME, gSaveBlock2Ptr->playerName);
    SetMonData(mon, MON_DATA_OT_GENDER, &gSaveBlock2Ptr->playerGender);
    SetMonData(mon, MON_DATA_OT_ID, gSaveBlock2Ptr->playerTrainerId);

    for (i = 0; i < PARTY_SIZE; i++)
    {
        if (GetMonData(&gPlayerParty[i], MON_DATA_SPECIES, NULL) == SPECIES_NONE)
            break;
    }

    if (i >= PARTY_SIZE)
        return CopyMonToPC(mon);

    CopyMon(&gPlayerParty[i], mon, sizeof(*mon));
    gPlayerPartyCount = i + 1;
    return MON_GIVEN_TO_PARTY;
}

static u8 CopyMonToPC(struct Pokemon *mon)
{
    s32 boxNo, boxPos;

    SetPCBoxToSendMon(VarGet(VAR_PC_BOX_TO_SEND_MON));

    boxNo = StorageGetCurrentBox();

    do
    {
        for (boxPos = 0; boxPos < IN_BOX_COUNT; boxPos++)
        {
            struct BoxPokemon* checkingMon = GetBoxedMonPtr(boxNo, boxPos);
            if (GetBoxMonData(checkingMon, MON_DATA_SPECIES, NULL) == SPECIES_NONE)
            {
                MonRestorePP(mon);
                CopyMon(checkingMon, &mon->box, sizeof(mon->box));
                gSpecialVar_MonBoxId = boxNo;
                gSpecialVar_MonBoxPos = boxPos;
                if (GetPCBoxToSendMon() != boxNo)
                    FlagClear(FLAG_SHOWN_BOX_WAS_FULL_MESSAGE);
                VarSet(VAR_PC_BOX_TO_SEND_MON, boxNo);
                return MON_GIVEN_TO_PC;
            }
        }

        boxNo++;
        if (boxNo == TOTAL_BOXES_COUNT)
            boxNo = 0;
    } while (boxNo != StorageGetCurrentBox());

    return MON_CANT_GIVE;
}

u8 CalculatePartyCount(struct Pokemon *party)
{
    u32 partyCount = 0;

    while (partyCount < PARTY_SIZE
        && GetMonData(&party[partyCount], MON_DATA_SPECIES, NULL) != SPECIES_NONE)
    {
        partyCount++;
    }

    return partyCount;
}

u8 CalculatePlayerPartyCount(void)
{
    gPlayerPartyCount = CalculatePartyCount(gPlayerParty);
    return gPlayerPartyCount;
}

u8 CalculateEnemyPartyCount(void)
{
    gEnemyPartyCount = CalculatePartyCount(gEnemyParty);
    return gEnemyPartyCount;
}

u8 GetMonsStateToDoubles(void)
{
    s32 aliveCount = 0;
    s32 i;
    CalculatePlayerPartyCount();

    if (gPlayerPartyCount == 1)
        return gPlayerPartyCount; // PLAYER_HAS_ONE_MON

    for (i = 0; i < gPlayerPartyCount; i++)
    {
        // FRLG changed the order of these checks, but there's no point to doing that
        // because of the requirement of all 3 of these checks.
        if (GetMonData(&gPlayerParty[i], MON_DATA_HP, NULL) != 0
         && GetMonData(&gPlayerParty[i], MON_DATA_SPECIES_OR_EGG, NULL) != SPECIES_NONE
         && GetMonData(&gPlayerParty[i], MON_DATA_SPECIES_OR_EGG, NULL) != SPECIES_EGG)
            aliveCount++;
    }

    return (aliveCount > 1) ? PLAYER_HAS_TWO_USABLE_MONS : PLAYER_HAS_ONE_USABLE_MON;
}

u16 GetAbilityBySpecies(u16 species, u8 abilityNum)
{
    int i;

    if (abilityNum < NUM_ABILITY_SLOTS)
        gLastUsedAbility = gSpeciesInfo[species].abilities[abilityNum];
    else
        gLastUsedAbility = ABILITY_NONE;

    if (abilityNum >= NUM_NORMAL_ABILITY_SLOTS) // if abilityNum is empty hidden ability, look for other hidden abilities
    {
        for (i = NUM_NORMAL_ABILITY_SLOTS; i < NUM_ABILITY_SLOTS && gLastUsedAbility == ABILITY_NONE; i++)
        {
            gLastUsedAbility = gSpeciesInfo[species].abilities[i];
        }
    }

    for (i = 0; i < NUM_ABILITY_SLOTS && gLastUsedAbility == ABILITY_NONE; i++) // look for any non-empty ability
    {
        gLastUsedAbility = gSpeciesInfo[species].abilities[i];
    }

    return gLastUsedAbility;
}

u16 GetMonAbility(struct Pokemon *mon)
{
    u16 species = GetMonData(mon, MON_DATA_SPECIES, NULL);
    u8 abilityNum = GetMonData(mon, MON_DATA_ABILITY_NUM, NULL);
    return GetAbilityBySpecies(species, abilityNum);
}

static void CreateSecretBaseEnemyParty(struct SecretBaseRecord *secretBaseRecord)
{
    s32 i, j;

    ZeroEnemyPartyMons();
    *gBattleResources->secretBase = *secretBaseRecord;

    for (i = 0; i < PARTY_SIZE; i++)
    {
        if (gBattleResources->secretBase->party.species[i])
        {
            CreateMon(&gEnemyParty[i],
                gBattleResources->secretBase->party.species[i],
                gBattleResources->secretBase->party.levels[i],
                15,
                TRUE,
                gBattleResources->secretBase->party.personality[i],
                OT_ID_RANDOM_NO_SHINY,
                0);

            SetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, &gBattleResources->secretBase->party.heldItems[i]);

            for (j = 0; j < NUM_STATS; j++)
                SetMonData(&gEnemyParty[i], MON_DATA_HP_EV + j, &gBattleResources->secretBase->party.EVs[i]);

            for (j = 0; j < MAX_MON_MOVES; j++)
            {
                SetMonData(&gEnemyParty[i], MON_DATA_MOVE1 + j, &gBattleResources->secretBase->party.moves[i * MAX_MON_MOVES + j]);
                SetMonData(&gEnemyParty[i], MON_DATA_PP1 + j, &gMovesInfo[gBattleResources->secretBase->party.moves[i * MAX_MON_MOVES + j]].pp);
            }
        }
    }
    gBattleTypeFlags = BATTLE_TYPE_TRAINER;
    gTrainerBattleOpponent_A = TRAINER_SECRET_BASE;
}

u8 GetSecretBaseTrainerPicIndex(void)
{
    u8 facilityClass = sSecretBaseFacilityClasses[gBattleResources->secretBase->gender][gBattleResources->secretBase->trainerId[0] % 5];
    return gFacilityClassToPicIndex[facilityClass];
}

u8 GetSecretBaseTrainerNameIndex(void)
{
    u8 facilityClass = sSecretBaseFacilityClasses[gBattleResources->secretBase->gender][gBattleResources->secretBase->trainerId[0] % 5];
    return gFacilityClassToTrainerClass[facilityClass];
}

bool8 IsPlayerPartyAndPokemonStorageFull(void)
{
    s32 i;

    for (i = 0; i < PARTY_SIZE; i++)
        if (GetMonData(&gPlayerParty[i], MON_DATA_SPECIES, NULL) == SPECIES_NONE)
            return FALSE;

    return IsPokemonStorageFull();
}

static bool8 IsPokemonStorageFull(void)
{
    s32 i, j;

    for (i = 0; i < TOTAL_BOXES_COUNT; i++)
        for (j = 0; j < IN_BOX_COUNT; j++)
            if (GetBoxMonDataAt(i, j, MON_DATA_SPECIES) == SPECIES_NONE)
                return FALSE;

    return TRUE;
}

const u8 *GetSpeciesName(u16 species)
{
    species = SanitizeSpeciesId(species);
    if (gSpeciesInfo[species].speciesName[0] == 0)
        return gSpeciesInfo[SPECIES_NONE].speciesName;
    return gSpeciesInfo[species].speciesName;
}

const u8 *GetSpeciesCategory(u16 species)
{
    species = SanitizeSpeciesId(species);
    if (gSpeciesInfo[species].categoryName[0] == 0)
        return gSpeciesInfo[SPECIES_NONE].categoryName;
    return gSpeciesInfo[species].categoryName;
}

const u8 *GetSpeciesPokedexDescription(u16 species)
{
    species = SanitizeSpeciesId(species);
    if (gSpeciesInfo[species].description == NULL)
        return gSpeciesInfo[SPECIES_NONE].description;
    return gSpeciesInfo[species].description;
}

u16 GetSpeciesHeight(u16 species)
{
    return gSpeciesInfo[SanitizeSpeciesId(species)].height;
}

u16 GetSpeciesWeight(u16 species)
{
    return gSpeciesInfo[SanitizeSpeciesId(species)].weight;
}

const struct LevelUpMove *GetSpeciesLevelUpLearnset(u16 species)
{
    const struct LevelUpMove *learnset = gSpeciesInfo[SanitizeSpeciesId(species)].levelUpLearnset;
    if (learnset == NULL)
        return gSpeciesInfo[SPECIES_NONE].levelUpLearnset;
    return learnset;
}

const u16 *GetSpeciesTeachableLearnset(u16 species)
{
    const u16 *learnset = gSpeciesInfo[SanitizeSpeciesId(species)].teachableLearnset;
    if (learnset == NULL)
        return gSpeciesInfo[SPECIES_NONE].teachableLearnset;
    return learnset;
}

const struct Evolution *GetSpeciesEvolutions(u16 species)
{
    const struct Evolution *evolutions = gSpeciesInfo[SanitizeSpeciesId(species)].evolutions;
    if (evolutions == NULL)
        return gSpeciesInfo[SPECIES_NONE].evolutions;
    return evolutions;
}

const u16 *GetSpeciesFormTable(u16 species)
{
    const u16 *formTable = gSpeciesInfo[SanitizeSpeciesId(species)].formSpeciesIdTable;
    if (formTable == NULL)
        return gSpeciesInfo[SPECIES_NONE].formSpeciesIdTable;
    return formTable;
}

const struct FormChange *GetSpeciesFormChanges(u16 species)
{
    const struct FormChange *evolutions = gSpeciesInfo[SanitizeSpeciesId(species)].formChangeTable;
    if (evolutions == NULL)
        return gSpeciesInfo[SPECIES_NONE].formChangeTable;
    return evolutions;
}

u8 CalculatePPWithBonus(u16 move, u8 ppBonuses, u8 moveIndex)
{
    u8 basePP = gMovesInfo[move].pp;
    return basePP + ((basePP * 20 * ((gPPUpGetMask[moveIndex] & ppBonuses) >> (2 * moveIndex))) / 100);
}

void RemoveMonPPBonus(struct Pokemon *mon, u8 moveIndex)
{
    u8 ppBonuses = GetMonData(mon, MON_DATA_PP_BONUSES, NULL);
    ppBonuses &= gPPUpClearMask[moveIndex];
    SetMonData(mon, MON_DATA_PP_BONUSES, &ppBonuses);
}

void RemoveBattleMonPPBonus(struct BattlePokemon *mon, u8 moveIndex)
{
    mon->ppBonuses &= gPPUpClearMask[moveIndex];
}

void PokemonToBattleMon(struct Pokemon *src, struct BattlePokemon *dst)
{
    s32 i;
    u8 nickname[POKEMON_NAME_BUFFER_SIZE];

    for (i = 0; i < MAX_MON_MOVES; i++)
    {
        dst->moves[i] = GetMonData(src, MON_DATA_MOVE1 + i, NULL);
        dst->pp[i] = GetMonData(src, MON_DATA_PP1 + i, NULL);
    }

    dst->species = GetMonData(src, MON_DATA_SPECIES, NULL);
    dst->item = GetMonData(src, MON_DATA_HELD_ITEM, NULL);
    dst->ppBonuses = GetMonData(src, MON_DATA_PP_BONUSES, NULL);
    dst->friendship = GetMonData(src, MON_DATA_FRIENDSHIP, NULL);
    dst->experience = GetMonData(src, MON_DATA_EXP, NULL);
    dst->hpIV = GetMonData(src, MON_DATA_HP_IV, NULL);
    dst->attackIV = GetMonData(src, MON_DATA_ATK_IV, NULL);
    dst->defenseIV = GetMonData(src, MON_DATA_DEF_IV, NULL);
    dst->speedIV = GetMonData(src, MON_DATA_SPEED_IV, NULL);
    dst->spAttackIV = GetMonData(src, MON_DATA_SPATK_IV, NULL);
    dst->spDefenseIV = GetMonData(src, MON_DATA_SPDEF_IV, NULL);
    dst->personality = GetMonData(src, MON_DATA_PERSONALITY, NULL);
    dst->status1 = GetMonData(src, MON_DATA_STATUS, NULL);
    dst->level = GetMonData(src, MON_DATA_LEVEL, NULL);
    dst->hp = GetMonData(src, MON_DATA_HP, NULL);
    dst->maxHP = GetMonData(src, MON_DATA_MAX_HP, NULL);
    dst->attack = GetMonData(src, MON_DATA_ATK, NULL);
    dst->defense = GetMonData(src, MON_DATA_DEF, NULL);
    dst->speed = GetMonData(src, MON_DATA_SPEED, NULL);
    dst->spAttack = GetMonData(src, MON_DATA_SPATK, NULL);
    dst->spDefense = GetMonData(src, MON_DATA_SPDEF, NULL);
    dst->abilityNum = GetMonData(src, MON_DATA_ABILITY_NUM, NULL);
    dst->otId = GetMonData(src, MON_DATA_OT_ID, NULL);
    dst->type1 = gSpeciesInfo[dst->species].types[0];
    dst->type2 = gSpeciesInfo[dst->species].types[1];
    dst->type3 = TYPE_MYSTERY;
    dst->ability = GetAbilityBySpecies(dst->species, dst->abilityNum);
    GetMonData(src, MON_DATA_NICKNAME, nickname);
    StringCopy_Nickname(dst->nickname, nickname);
    GetMonData(src, MON_DATA_OT_NAME, dst->otName);

    for (i = 0; i < NUM_BATTLE_STATS; i++)
        dst->statStages[i] = DEFAULT_STAT_STAGE;

    dst->status2 = 0;
}


bool8 ExecuteTableBasedItemEffect(struct Pokemon *mon, u16 item, u8 partyIndex, u8 moveIndex)
{
    return PokemonUseItemEffects(mon, item, partyIndex, moveIndex, FALSE);
}

#define UPDATE_FRIENDSHIP_FROM_ITEM()                                                                   \
{                                                                                                       \
    if ((retVal == 0 || friendshipOnly) && !ShouldSkipFriendshipChange() && friendshipChange == 0)      \
    {                                                                                                   \
        friendshipChange = itemEffect[itemEffectParam];                                                 \
        friendship = GetMonData(mon, MON_DATA_FRIENDSHIP, NULL);                                        \
        if (friendshipChange > 0 && holdEffect == HOLD_EFFECT_FRIENDSHIP_UP)                            \
            friendship += 150 * friendshipChange / 100;                                                 \
        else                                                                                            \
            friendship += friendshipChange;                                                             \
        if (friendshipChange > 0)                                                                       \
        {                                                                                               \
            if (GetMonData(mon, MON_DATA_POKEBALL, NULL) == ITEM_LUXURY_BALL)                           \
                friendship++;                                                                           \
            if (GetMonData(mon, MON_DATA_MET_LOCATION, NULL) == GetCurrentRegionMapSectionId())         \
                friendship++;                                                                           \
        }                                                                                               \
        if (friendship < 0)                                                                             \
            friendship = 0;                                                                             \
        if (friendship > MAX_FRIENDSHIP)                                                                \
            friendship = MAX_FRIENDSHIP;                                                                \
        SetMonData(mon, MON_DATA_FRIENDSHIP, &friendship);                                              \
        retVal = FALSE;                                                                                 \
    }                                                                                                   \
}

// EXP candies store an index for this table in their holdEffectParam.
const u32 sExpCandyExperienceTable[] = {
    [EXP_100 - 1] = 100,
    [EXP_800 - 1] = 800,
    [EXP_3000 - 1] = 3000,
    [EXP_10000 - 1] = 10000,
    [EXP_30000 - 1] = 30000,
};

// Returns TRUE if the item has no effect on the Pokémon, FALSE otherwise
bool8 PokemonUseItemEffects(struct Pokemon *mon, u16 item, u8 partyIndex, u8 moveIndex, bool8 usedByAI)
{
    u32 dataUnsigned;
    s32 dataSigned, evCap;
    s32 friendship;
    s32 i;
    bool8 retVal = TRUE;
    const u8 *itemEffect;
    u8 itemEffectParam = ITEM_EFFECT_ARG_START;
    u32 temp1, temp2;
    s8 friendshipChange = 0;
    u8 holdEffect;
    u8 battlerId = MAX_BATTLERS_COUNT;
    u32 friendshipOnly = FALSE;
    u16 heldItem;
    u8 effectFlags;
    s8 evChange;
    u16 evCount;

    // Get item hold effect
    heldItem = GetMonData(mon, MON_DATA_HELD_ITEM, NULL);
    if (heldItem == ITEM_ENIGMA_BERRY_E_READER)
    #if FREE_ENIGMA_BERRY == FALSE
        holdEffect = gSaveBlock1Ptr->enigmaBerry.holdEffect;
    #else
        holdEffect = 0;
    #endif //FREE_ENIGMA_BERRY
    else
        holdEffect = ItemId_GetHoldEffect(heldItem);

    // Skip using the item if it won't do anything
    if (ItemId_GetEffect(item) == NULL && item != ITEM_ENIGMA_BERRY_E_READER)
        return TRUE;

    // Get item effect
    itemEffect = ItemId_GetEffect(item);

    // Do item effect
    for (i = 0; i < ITEM_EFFECT_ARG_START; i++)
    {
        switch (i)
        {

        // Handle ITEM0 effects (infatuation, Dire Hit, X Attack). ITEM0_SACRED_ASH is handled in party_menu.c
        // Now handled in item battle scripts.
        case 0:
            break;

        // Handle ITEM1 effects (in-battle stat boosting effects)
        // Now handled in item battle scripts.
        case 1:
            break;
        // Formerly used by the item effects of the X Sp. Atk and the X Accuracy
        case 2:
            break;

        // Handle ITEM3 effects (Guard Spec, Rare Candy, cure status)
        case 3:
            // Rare Candy / EXP Candy
            if ((itemEffect[i] & ITEM3_LEVEL_UP)
             && GetMonData(mon, MON_DATA_LEVEL, NULL) != MAX_LEVEL)
            {
                u8 param = ItemId_GetHoldEffectParam(item);
                dataUnsigned = 0;

                if (param == 0) // Rare Candy
                {
                    dataUnsigned = gExperienceTables[gSpeciesInfo[GetMonData(mon, MON_DATA_SPECIES, NULL)].growthRate][GetMonData(mon, MON_DATA_LEVEL, NULL) + 1];
                }
                else if (param - 1 < ARRAY_COUNT(sExpCandyExperienceTable)) // EXP Candies
                {
                    u16 species = GetMonData(mon, MON_DATA_SPECIES, NULL);
                    dataUnsigned = sExpCandyExperienceTable[param - 1] + GetMonData(mon, MON_DATA_EXP, NULL);
                    if (dataUnsigned > gExperienceTables[gSpeciesInfo[species].growthRate][MAX_LEVEL])
                        dataUnsigned = gExperienceTables[gSpeciesInfo[species].growthRate][MAX_LEVEL];
                }

                if (dataUnsigned != 0) // Failsafe
                {
                    SetMonData(mon, MON_DATA_EXP, &dataUnsigned);
                    CalculateMonStats(mon);
                    retVal = FALSE;
                }
            }

            // Cure status
            if ((itemEffect[i] & ITEM3_SLEEP) && HealStatusConditions(mon, STATUS1_SLEEP, battlerId) == 0)
                retVal = FALSE;
            if ((itemEffect[i] & ITEM3_POISON) && HealStatusConditions(mon, STATUS1_PSN_ANY | STATUS1_TOXIC_COUNTER, battlerId) == 0)
                retVal = FALSE;
            if ((itemEffect[i] & ITEM3_BURN) && HealStatusConditions(mon, STATUS1_BURN, battlerId) == 0)
                retVal = FALSE;
            if ((itemEffect[i] & ITEM3_FREEZE) && HealStatusConditions(mon, STATUS1_FREEZE | STATUS1_FROSTBITE, battlerId) == 0)
                retVal = FALSE;
            if ((itemEffect[i] & ITEM3_PARALYSIS) && HealStatusConditions(mon, STATUS1_PARALYSIS, battlerId) == 0)
                retVal = FALSE;
            break;

        // Handle ITEM4 effects (Change HP/Atk EVs, HP heal, PP heal, PP up, Revive, and evolution stones)
        case 4:
            effectFlags = itemEffect[i];

            // PP Up
            if (effectFlags & ITEM4_PP_UP)
            {
                effectFlags &= ~ITEM4_PP_UP;
                dataUnsigned = (GetMonData(mon, MON_DATA_PP_BONUSES, NULL) & gPPUpGetMask[moveIndex]) >> (moveIndex * 2);
                temp1 = CalculatePPWithBonus(GetMonData(mon, MON_DATA_MOVE1 + moveIndex, NULL), GetMonData(mon, MON_DATA_PP_BONUSES, NULL), moveIndex);
                if (dataUnsigned <= 2 && temp1 > 4)
                {
                    dataUnsigned = GetMonData(mon, MON_DATA_PP_BONUSES, NULL) + gPPUpAddValues[moveIndex];
                    SetMonData(mon, MON_DATA_PP_BONUSES, &dataUnsigned);

                    dataUnsigned = CalculatePPWithBonus(GetMonData(mon, MON_DATA_MOVE1 + moveIndex, NULL), dataUnsigned, moveIndex) - temp1;
                    dataUnsigned = GetMonData(mon, MON_DATA_PP1 + moveIndex, NULL) + dataUnsigned;
                    SetMonData(mon, MON_DATA_PP1 + moveIndex, &dataUnsigned);
                    retVal = FALSE;
                }
            }
            temp1 = 0;

            // Loop through and try each of the remaining ITEM4 effects
            while (effectFlags != 0)
            {
                if (effectFlags & 1)
                {
                    switch (temp1)
                    {
                    case 0: // ITEM4_EV_HP
                    case 1: // ITEM4_EV_ATK
                        evCount = GetMonEVCount(mon);
                        temp2 = itemEffect[itemEffectParam];
                        dataSigned = GetMonData(mon, sGetMonDataEVConstants[temp1], NULL);
                        evChange = temp2;

                        if (evChange > 0) // Increasing EV (HP or Atk)
                        {
                            // Has EV increase limit already been reached?
                            if (evCount >= MAX_TOTAL_EVS)
                                return TRUE;

                            if (itemEffect[10] & ITEM10_IS_VITAMIN)
                                evCap = EV_ITEM_RAISE_LIMIT;
                            else
                                evCap = MAX_PER_STAT_EVS;

                            if (dataSigned >= evCap)
                                break;

                            // Limit the increase
                            if (dataSigned + evChange > evCap)
                                temp2 = evCap - (dataSigned + evChange) + evChange;
                            else
                                temp2 = evChange;

                            if (evCount + temp2 > MAX_TOTAL_EVS)
                                temp2 += MAX_TOTAL_EVS - (evCount + temp2);

                            dataSigned += temp2;
                        }
                        else if (evChange < 0) // Decreasing EV (HP or Atk)
                        {
                            if (dataSigned == 0)
                            {
                                // No EVs to lose, but make sure friendship updates anyway
                                friendshipOnly = TRUE;
                                itemEffectParam++;
                                break;
                            }
                            dataSigned += evChange;
                            if (I_BERRY_EV_JUMP == GEN_4 && dataSigned > 100)
                                dataSigned = 100;
                            if (dataSigned < 0)
                                dataSigned = 0;
                        }
                        else // Reset EV (HP or Atk)
                        {
                            if (dataSigned == 0)
                                break;

                            dataSigned = 0;
                        }

                        // Update EVs and stats
                        SetMonData(mon, sGetMonDataEVConstants[temp1], &dataSigned);
                        CalculateMonStats(mon);
                        itemEffectParam++;
                        retVal = FALSE;
                        break;

                    case 2: // ITEM4_HEAL_HP
                        // Check use validity.
                        if ((effectFlags & (ITEM4_REVIVE >> 2) && GetMonData(mon, MON_DATA_HP, NULL) != 0)
                              || (!(effectFlags & (ITEM4_REVIVE >> 2)) && GetMonData(mon, MON_DATA_HP, NULL) == 0))
                        {
                            itemEffectParam++;
                            break;
                        }

                        // Get amount of HP to restore
                        dataUnsigned = itemEffect[itemEffectParam++];
                        switch (dataUnsigned)
                        {
                        case ITEM6_HEAL_HP_FULL:
                            dataUnsigned = GetMonData(mon, MON_DATA_MAX_HP, NULL) - GetMonData(mon, MON_DATA_HP, NULL);
                            break;
                        case ITEM6_HEAL_HP_HALF:
                            dataUnsigned = GetMonData(mon, MON_DATA_MAX_HP, NULL) / 2;
                            if (dataUnsigned == 0)
                                dataUnsigned = 1;
                            break;
                        case ITEM6_HEAL_HP_LVL_UP:
                            dataUnsigned = gBattleScripting.levelUpHP;
                            break;
                        case ITEM6_HEAL_HP_QUARTER:
                            dataUnsigned = GetMonData(mon, MON_DATA_MAX_HP, NULL) / 4;
                            if (dataUnsigned == 0)
                                dataUnsigned = 1;
                            break;
                        }

                        // Only restore HP if not at max health
                        if (GetMonData(mon, MON_DATA_MAX_HP, NULL) != GetMonData(mon, MON_DATA_HP, NULL))
                        {
                            // Restore HP
                            dataUnsigned = GetMonData(mon, MON_DATA_HP, NULL) + dataUnsigned;
                            if (dataUnsigned > GetMonData(mon, MON_DATA_MAX_HP, NULL))
                                dataUnsigned = GetMonData(mon, MON_DATA_MAX_HP, NULL);
                            SetMonData(mon, MON_DATA_HP, &dataUnsigned);
                            retVal = FALSE;
                        }
                        effectFlags &= ~(ITEM4_REVIVE >> 2);
                        break;

                    case 3: // ITEM4_HEAL_PP
                        if (!(effectFlags & (ITEM4_HEAL_PP_ONE >> 3)))
                        {
                            // Heal PP for all moves
                            for (temp2 = 0; (signed)(temp2) < (signed)(MAX_MON_MOVES); temp2++)
                            {
                                u16 moveId;
                                dataUnsigned = GetMonData(mon, MON_DATA_PP1 + temp2, NULL);
                                moveId = GetMonData(mon, MON_DATA_MOVE1 + temp2, NULL);
                                if (dataUnsigned != CalculatePPWithBonus(moveId, GetMonData(mon, MON_DATA_PP_BONUSES, NULL), temp2))
                                {
                                    dataUnsigned += itemEffect[itemEffectParam];
                                    moveId = GetMonData(mon, MON_DATA_MOVE1 + temp2, NULL); // Redundant
                                    if (dataUnsigned > CalculatePPWithBonus(moveId, GetMonData(mon, MON_DATA_PP_BONUSES, NULL), temp2))
                                    {
                                        moveId = GetMonData(mon, MON_DATA_MOVE1 + temp2, NULL); // Redundant
                                        dataUnsigned = CalculatePPWithBonus(moveId, GetMonData(mon, MON_DATA_PP_BONUSES, NULL), temp2);
                                    }
                                    SetMonData(mon, MON_DATA_PP1 + temp2, &dataUnsigned);
                                    retVal = FALSE;
                                }
                            }
                            itemEffectParam++;
                        }
                        else
                        {
                            // Heal PP for one move
                            u16 moveId;
                            dataUnsigned = GetMonData(mon, MON_DATA_PP1 + moveIndex, NULL);
                            moveId = GetMonData(mon, MON_DATA_MOVE1 + moveIndex, NULL);
                            if (dataUnsigned != CalculatePPWithBonus(moveId, GetMonData(mon, MON_DATA_PP_BONUSES, NULL), moveIndex))
                            {
                                dataUnsigned += itemEffect[itemEffectParam++];
                                moveId = GetMonData(mon, MON_DATA_MOVE1 + moveIndex, NULL); // Redundant
                                if (dataUnsigned > CalculatePPWithBonus(moveId, GetMonData(mon, MON_DATA_PP_BONUSES, NULL), moveIndex))
                                {
                                    moveId = GetMonData(mon, MON_DATA_MOVE1 + moveIndex, NULL); // Redundant
                                    dataUnsigned = CalculatePPWithBonus(moveId, GetMonData(mon, MON_DATA_PP_BONUSES, NULL), moveIndex);
                                }
                                SetMonData(mon, MON_DATA_PP1 + moveIndex, &dataUnsigned);
                                retVal = FALSE;
                            }
                        }
                        break;

                    // cases 4-6 are ITEM4_HEAL_PP_ONE, ITEM4_PP_UP, and ITEM4_REVIVE, which
                    // are already handled above by other cases or before the loop

                    case 7: // ITEM4_EVO_STONE
                        {
                            u16 targetSpecies = GetEvolutionTargetSpecies(mon, EVO_MODE_ITEM_USE, item, NULL);

                            if (targetSpecies != SPECIES_NONE)
                            {
                                return FALSE;
                            }
                        }
                        break;
                    }
                }
                temp1++;
                effectFlags >>= 1;
            }
            break;

        // Handle ITEM5 effects (Change Def/SpDef/SpAtk/Speed EVs, PP Max, and friendship changes)
        case 5:
            effectFlags = itemEffect[i];
            temp1 = 0;

            // Loop through and try each of the ITEM5 effects
            while (effectFlags != 0)
            {
                if (effectFlags & 1)
                {
                    switch (temp1)
                    {
                    case 0: // ITEM5_EV_DEF
                    case 1: // ITEM5_EV_SPEED
                    case 2: // ITEM5_EV_SPDEF
                    case 3: // ITEM5_EV_SPATK
                        evCount = GetMonEVCount(mon);
                        temp2 = itemEffect[itemEffectParam];
                        dataSigned = GetMonData(mon, sGetMonDataEVConstants[temp1 + 2], NULL);
                        evChange = temp2;
                        if (evChange > 0) // Increasing EV
                        {
                            // Has EV increase limit already been reached?
                            if (evCount >= MAX_TOTAL_EVS)
                                return TRUE;

                            if (itemEffect[10] & ITEM10_IS_VITAMIN)
                                evCap = EV_ITEM_RAISE_LIMIT;
                            else
                                evCap = MAX_PER_STAT_EVS;

                            if (dataSigned >= evCap)
                                break;

                            // Limit the increase
                            if (dataSigned + evChange > evCap)
                                temp2 = evCap - (dataSigned + evChange) + evChange;
                            else
                                temp2 = evChange;

                            if (evCount + temp2 > MAX_TOTAL_EVS)
                                temp2 += MAX_TOTAL_EVS - (evCount + temp2);

                            dataSigned += temp2;
                        }
                        else if (evChange < 0) // Decreasing EV
                        {
                            if (dataSigned == 0)
                            {
                                // No EVs to lose, but make sure friendship updates anyway
                                friendshipOnly = TRUE;
                                itemEffectParam++;
                                break;
                            }
                            dataSigned += evChange;
                            if (I_BERRY_EV_JUMP == GEN_4 && dataSigned > 100)
                                dataSigned = 100;
                            if (dataSigned < 0)
                                dataSigned = 0;
                        }
                        else // Reset EV
                        {
                            if (dataSigned == 0)
                                break;

                            dataSigned = 0;
                        }

                        // Update EVs and stats
                        SetMonData(mon, sGetMonDataEVConstants[temp1 + 2], &dataSigned);
                        CalculateMonStats(mon);
                        retVal = FALSE;
                        itemEffectParam++;
                        break;

                    case 4: // ITEM5_PP_MAX
                        dataUnsigned = (GetMonData(mon, MON_DATA_PP_BONUSES, NULL) & gPPUpGetMask[moveIndex]) >> (moveIndex * 2);
                        temp2 = CalculatePPWithBonus(GetMonData(mon, MON_DATA_MOVE1 + moveIndex, NULL), GetMonData(mon, MON_DATA_PP_BONUSES, NULL), moveIndex);

                        // Check if 3 PP Ups have been applied already, and that the move has a total PP of at least 5 (excludes Sketch)
                        if (dataUnsigned < 3 && temp2 >= 5)
                        {
                            dataUnsigned = GetMonData(mon, MON_DATA_PP_BONUSES, NULL);
                            dataUnsigned &= gPPUpClearMask[moveIndex];
                            dataUnsigned += gPPUpAddValues[moveIndex] * 3; // Apply 3 PP Ups (max)

                            SetMonData(mon, MON_DATA_PP_BONUSES, &dataUnsigned);
                            dataUnsigned = CalculatePPWithBonus(GetMonData(mon, MON_DATA_MOVE1 + moveIndex, NULL), dataUnsigned, moveIndex) - temp2;
                            dataUnsigned = GetMonData(mon, MON_DATA_PP1 + moveIndex, NULL) + dataUnsigned;
                            SetMonData(mon, MON_DATA_PP1 + moveIndex, &dataUnsigned);
                            retVal = FALSE;
                        }
                        break;

                    case 5: // ITEM5_FRIENDSHIP_LOW
                        // Changes to friendship are given differently depending on
                        // how much friendship the Pokémon already has.
                        // In general, Pokémon with lower friendship receive more,
                        // and Pokémon with higher friendship receive less.
                        if (GetMonData(mon, MON_DATA_FRIENDSHIP, NULL) < 100)
                            UPDATE_FRIENDSHIP_FROM_ITEM();
                        itemEffectParam++;
                        break;

                    case 6: // ITEM5_FRIENDSHIP_MID
                        if (GetMonData(mon, MON_DATA_FRIENDSHIP, NULL) >= 100 && GetMonData(mon, MON_DATA_FRIENDSHIP, NULL) < 200)
                            UPDATE_FRIENDSHIP_FROM_ITEM();
                        itemEffectParam++;
                        break;

                    case 7: // ITEM5_FRIENDSHIP_HIGH
                        if (GetMonData(mon, MON_DATA_FRIENDSHIP, NULL) >= 200)
                            UPDATE_FRIENDSHIP_FROM_ITEM();
                        itemEffectParam++;
                        break;
                    }
                }
                temp1++;
                effectFlags >>= 1;
            }
            break;
        }
    }
    return retVal;
}

bool8 HealStatusConditions(struct Pokemon *mon, u32 healMask, u8 battleId)
{
    u32 status = GetMonData(mon, MON_DATA_STATUS, NULL);

    if (status & healMask)
    {
        status &= ~healMask;
        SetMonData(mon, MON_DATA_STATUS, &status);
        if (gMain.inBattle && battleId != MAX_BATTLERS_COUNT) {
            gBattleMons[battleId].status1 &= ~healMask;
        }
        return FALSE;
    }
    else
    {
        return TRUE;
    }
}

static bool8 PartyMonHasStatus(struct Pokemon *mon, u32 unused, u32 healMask, u8 battleId)
{
    if ((GetMonData(mon, MON_DATA_STATUS, NULL) & healMask) != 0)
        return TRUE;
    else
        return FALSE;
}

u8 GetItemEffectParamOffset(u32 battler, u16 itemId, u8 effectByte, u8 effectBit)
{
    const u8 *temp;
    const u8 *itemEffect;
    u8 offset;
    int i;
    u8 j;
    u8 effectFlags;

    offset = ITEM_EFFECT_ARG_START;

    temp = ItemId_GetEffect(itemId);

    if (temp != NULL && !temp && itemId != ITEM_ENIGMA_BERRY_E_READER)
        return 0;

    if (itemId == ITEM_ENIGMA_BERRY_E_READER)
    {
        temp = gEnigmaBerries[battler].itemEffect;
    }

    itemEffect = temp;

    for (i = 0; i < ITEM_EFFECT_ARG_START; i++)
    {
        switch (i)
        {
        case 0:
        case 1:
        case 2:
        case 3:
            if (i == effectByte)
                return 0;
            break;
        case 4:
            effectFlags = itemEffect[4];
            if (effectFlags & ITEM4_PP_UP)
                effectFlags &= ~(ITEM4_PP_UP);
            j = 0;
            while (effectFlags)
            {
                if (effectFlags & 1)
                {
                    switch (j)
                    {
                    case 2: // ITEM4_HEAL_HP
                        if (effectFlags & (ITEM4_REVIVE >> 2))
                            effectFlags &= ~(ITEM4_REVIVE >> 2);
                        // fallthrough
                    case 0: // ITEM4_EV_HP
                        if (i == effectByte && (effectFlags & effectBit))
                            return offset;
                        offset++;
                        break;
                    case 1: // ITEM4_EV_ATK
                        if (i == effectByte && (effectFlags & effectBit))
                            return offset;
                        offset++;
                        break;
                    case 3: // ITEM4_HEAL_PP
                        if (i == effectByte && (effectFlags & effectBit))
                            return offset;
                        offset++;
                        break;
                    case 7: // ITEM4_EVO_STONE
                        if (i == effectByte)
                            return 0;
                        break;
                    }
                }
                j++;
                effectFlags >>= 1;
                if (i == effectByte)
                    effectBit >>= 1;
            }
            break;
        case 5:
            effectFlags = itemEffect[5];
            j = 0;
            while (effectFlags)
            {
                if (effectFlags & 1)
                {
                    switch (j)
                    {
                    case 0: // ITEM5_EV_DEF
                    case 1: // ITEM5_EV_SPEED
                    case 2: // ITEM5_EV_SPDEF
                    case 3: // ITEM5_EV_SPATK
                    case 4: // ITEM5_PP_MAX
                    case 5: // ITEM5_FRIENDSHIP_LOW
                    case 6: // ITEM5_FRIENDSHIP_MID
                        if (i == effectByte && (effectFlags & effectBit))
                            return offset;
                        offset++;
                        break;
                    case 7: // ITEM5_FRIENDSHIP_HIGH
                        if (i == effectByte)
                            return 0;
                        break;
                    }
                }
                j++;
                effectFlags >>= 1;
                if (i == effectByte)
                    effectBit >>= 1;
            }
            break;
        }
    }

    return offset;
}

u8 GetNature(struct Pokemon *mon)
{
    return GetMonData(mon, MON_DATA_PERSONALITY, NULL) % NUM_NATURES;
}

u8 GetNatureFromPersonality(u32 personality)
{
    return personality % NUM_NATURES;
}

static u32 GetGMaxTargetSpecies(u32 species)
{
    // TODO: Dynamax
    // const struct FormChange *formChanges = GetSpeciesFormChanges(species);
    // u32 i;
    // for (i = 0; formChanges[i].method != FORM_CHANGE_TERMINATOR; i++)
    // {
    //     if (formChanges[i].method == FORM_CHANGE_BATTLE_GIGANTAMAX)
    //         return formChanges[i].targetSpecies;
    // }
    return SPECIES_NONE;
}

u16 GetEvolutionTargetSpecies(struct Pokemon *mon, u8 mode, u16 evolutionItem, struct Pokemon *tradePartner)
{
    int i, j;
    u16 targetSpecies = SPECIES_NONE;
    u16 species = GetMonData(mon, MON_DATA_SPECIES, 0);
    u16 heldItem = GetMonData(mon, MON_DATA_HELD_ITEM, 0);
    u32 personality = GetMonData(mon, MON_DATA_PERSONALITY, 0);
    u8 level;
    u16 friendship;
    u8 beauty = GetMonData(mon, MON_DATA_BEAUTY, 0);
    u16 upperPersonality = personality >> 16;
    u32 holdEffect, currentMap, partnerSpecies, partnerHeldItem, partnerHoldEffect;
    bool32 consumeItem = FALSE;
    u16 evolutionTracker = GetMonData(mon, MON_DATA_EVOLUTION_TRACKER, 0);
    const struct Evolution *evolutions = GetSpeciesEvolutions(species);

    if (evolutions == NULL)
        return SPECIES_NONE;

    if (tradePartner != NULL)
    {
        partnerSpecies = GetMonData(tradePartner, MON_DATA_SPECIES, 0);
        partnerHeldItem = GetMonData(tradePartner, MON_DATA_HELD_ITEM, 0);

        if (partnerHeldItem == ITEM_ENIGMA_BERRY_E_READER)
        #if FREE_ENIGMA_BERRY == FALSE
            partnerHoldEffect = gSaveBlock1Ptr->enigmaBerry.holdEffect;
        #else
            partnerHoldEffect = 0;
        #endif //FREE_ENIGMA_BERRY
        else
            partnerHoldEffect = ItemId_GetHoldEffect(partnerHeldItem);
    }
    else
    {
        partnerSpecies = SPECIES_NONE;
        partnerHeldItem = ITEM_NONE;
        partnerHoldEffect = HOLD_EFFECT_NONE;
    }

    if (heldItem == ITEM_ENIGMA_BERRY_E_READER)
    #if FREE_ENIGMA_BERRY == FALSE
        holdEffect = gSaveBlock1Ptr->enigmaBerry.holdEffect;
    #else
        holdEffect = 0;
    #endif //FREE_ENIGMA_BERRY
    else
        holdEffect = ItemId_GetHoldEffect(heldItem);

    // Prevent evolution with Everstone, unless we're just viewing the party menu with an evolution item
    if (holdEffect == HOLD_EFFECT_PREVENT_EVOLVE
        && mode != EVO_MODE_ITEM_CHECK
        && (P_KADABRA_EVERSTONE < GEN_4 || species != SPECIES_KADABRA))
        return SPECIES_NONE;

    switch (mode)
    {
    case EVO_MODE_NORMAL:
        level = GetMonData(mon, MON_DATA_LEVEL, 0);
        friendship = GetMonData(mon, MON_DATA_FRIENDSHIP, 0);

        for (i = 0; evolutions[i].method != EVOLUTIONS_END; i++)
        {
            if (SanitizeSpeciesId(evolutions[i].targetSpecies) == SPECIES_NONE)
                continue;

            switch (evolutions[i].method)
            {
            case EVO_FRIENDSHIP:
                if (friendship >= FRIENDSHIP_EVO_THRESHOLD)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_FRIENDSHIP_DAY:
                if (GetTimeOfDay() != TIME_NIGHT && friendship >= FRIENDSHIP_EVO_THRESHOLD)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_DAY:
                if (GetTimeOfDay() != TIME_NIGHT && evolutions[i].param <= level)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_FRIENDSHIP_NIGHT:
                if (GetTimeOfDay() == TIME_NIGHT && friendship >= FRIENDSHIP_EVO_THRESHOLD)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_NIGHT:
                if (GetTimeOfDay() == TIME_NIGHT && evolutions[i].param <= level)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_ITEM_HOLD_NIGHT:
                if (GetTimeOfDay() == TIME_NIGHT && heldItem == evolutions[i].param)
                {
                    targetSpecies = evolutions[i].targetSpecies;
                    consumeItem = TRUE;
                }
                break;
            case EVO_ITEM_HOLD_DAY:
                if (GetTimeOfDay() != TIME_NIGHT && heldItem == evolutions[i].param)
                {
                    targetSpecies = evolutions[i].targetSpecies;
                    consumeItem = TRUE;
                }
                break;
            case EVO_LEVEL_DUSK:
                if (GetTimeOfDay() == TIME_EVENING && evolutions[i].param <= level)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL:
                if (evolutions[i].param <= level)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_FEMALE:
                if (evolutions[i].param <= level && GetMonGender(mon) == MON_FEMALE)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_MALE:
                if (evolutions[i].param <= level && GetMonGender(mon) == MON_MALE)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_ATK_GT_DEF:
                if (evolutions[i].param <= level)
                    if (GetMonData(mon, MON_DATA_ATK, 0) > GetMonData(mon, MON_DATA_DEF, 0))
                        targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_ATK_EQ_DEF:
                if (evolutions[i].param <= level)
                    if (GetMonData(mon, MON_DATA_ATK, 0) == GetMonData(mon, MON_DATA_DEF, 0))
                        targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_ATK_LT_DEF:
                if (evolutions[i].param <= level)
                    if (GetMonData(mon, MON_DATA_ATK, 0) < GetMonData(mon, MON_DATA_DEF, 0))
                        targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_SILCOON:
                if (evolutions[i].param <= level && (upperPersonality % 10) <= 4)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_CASCOON:
                if (evolutions[i].param <= level && (upperPersonality % 10) > 4)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_NINJASK:
                if (evolutions[i].param <= level)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_FAMILY_OF_FOUR:
                if (evolutions[i].param <= level && (personality % 100) != 0)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_FAMILY_OF_THREE:
                if (evolutions[i].param <= level && (personality % 100) == 0)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_BEAUTY:
                if (evolutions[i].param <= beauty)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_MOVE:
                if (MonKnowsMove(mon, evolutions[i].param))
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_MOVE_TWO_SEGMENT:
                if (MonKnowsMove(mon, evolutions[i].param) && (personality % 100) != 0)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_MOVE_THREE_SEGMENT:
                if (MonKnowsMove(mon, evolutions[i].param) && (personality % 100) == 0)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_FRIENDSHIP_MOVE_TYPE:
                if (friendship >= FRIENDSHIP_EVO_THRESHOLD)
                {
                    for (j = 0; j < MAX_MON_MOVES; j++)
                    {
                        if (gMovesInfo[GetMonData(mon, MON_DATA_MOVE1 + j, NULL)].type == evolutions[i].param)
                        {
                            targetSpecies = evolutions[i].targetSpecies;
                            break;
                        }
                    }
                }
                break;
            case EVO_SPECIFIC_MON_IN_PARTY:
                for (j = 0; j < PARTY_SIZE; j++)
                {
                    if (GetMonData(&gPlayerParty[j], MON_DATA_SPECIES, NULL) == evolutions[i].param)
                    {
                        targetSpecies = evolutions[i].targetSpecies;
                        break;
                    }
                }
                break;
            case EVO_LEVEL_DARK_TYPE_MON_IN_PARTY:
                if (evolutions[i].param <= level)
                {
                    for (j = 0; j < PARTY_SIZE; j++)
                    {
                        u16 currSpecies = GetMonData(&gPlayerParty[j], MON_DATA_SPECIES, NULL);
                        if (gSpeciesInfo[currSpecies].types[0] == TYPE_DARK
                         || gSpeciesInfo[currSpecies].types[1] == TYPE_DARK)
                        {
                            targetSpecies = evolutions[i].targetSpecies;
                            break;
                        }
                    }
                }
                break;
            case EVO_LEVEL_RAIN:
                j = GetCurrentWeather();
                if (evolutions[i].param <= level
                 && (j == WEATHER_RAIN || j == WEATHER_RAIN_THUNDERSTORM || j == WEATHER_DOWNPOUR))
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_FOG:
                j = GetCurrentWeather();
                if (evolutions[i].param <= level
                 && (j == WEATHER_FOG_HORIZONTAL || j == WEATHER_FOG_DIAGONAL))
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_MAPSEC:
                if (gMapHeader.regionMapSectionId == evolutions[i].param)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_SPECIFIC_MAP:
                currentMap = ((gSaveBlock1Ptr->location.mapGroup) << 8 | gSaveBlock1Ptr->location.mapNum);
                if (currentMap == evolutions[i].param)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_NATURE_AMPED:
                if (evolutions[i].param <= level)
                {
                    u8 nature = GetNature(mon);
                    switch (nature)
                    {
                    case NATURE_HARDY:
                    case NATURE_BRAVE:
                    case NATURE_ADAMANT:
                    case NATURE_NAUGHTY:
                    case NATURE_DOCILE:
                    case NATURE_IMPISH:
                    case NATURE_LAX:
                    case NATURE_HASTY:
                    case NATURE_JOLLY:
                    case NATURE_NAIVE:
                    case NATURE_RASH:
                    case NATURE_SASSY:
                    case NATURE_QUIRKY:
                        targetSpecies = evolutions[i].targetSpecies;
                        break;
                    }
                }
                break;
            case EVO_LEVEL_NATURE_LOW_KEY:
                if (evolutions[i].param <= level)
                {
                    u8 nature = GetNature(mon);
                    switch (nature)
                    {
                    case NATURE_LONELY:
                    case NATURE_BOLD:
                    case NATURE_RELAXED:
                    case NATURE_TIMID:
                    case NATURE_SERIOUS:
                    case NATURE_MODEST:
                    case NATURE_MILD:
                    case NATURE_QUIET:
                    case NATURE_BASHFUL:
                    case NATURE_CALM:
                    case NATURE_GENTLE:
                    case NATURE_CAREFUL:
                        targetSpecies = evolutions[i].targetSpecies;
                        break;
                    }
                }
                break;
            case EVO_ITEM_HOLD:
                if (heldItem == evolutions[i].param)
                {
                    targetSpecies = evolutions[i].targetSpecies;
                    consumeItem = TRUE;
                }
                break;
            case EVO_LEVEL_MOVE_TWENTY_TIMES:
                if (evolutionTracker >= 20)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_RECOIL_DAMAGE_MALE:
                if (evolutionTracker >= evolutions[i].param && GetMonGender(mon) == MON_MALE)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_LEVEL_RECOIL_DAMAGE_FEMALE:
                if (evolutionTracker >= evolutions[i].param && GetMonGender(mon) == MON_FEMALE)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            }
        }
        break;
    case EVO_MODE_TRADE:
        for (i = 0; evolutions[i].method != EVOLUTIONS_END; i++)
        {
            if (SanitizeSpeciesId(evolutions[i].targetSpecies) == SPECIES_NONE)
                continue;

            switch (evolutions[i].method)
            {
            case EVO_TRADE:
                targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_TRADE_ITEM:
                if (evolutions[i].param == heldItem)
                {
                    targetSpecies = evolutions[i].targetSpecies;
                    consumeItem = TRUE;
                }
                break;
            case EVO_TRADE_SPECIFIC_MON:
                if (evolutions[i].param == partnerSpecies && partnerHoldEffect != HOLD_EFFECT_PREVENT_EVOLVE)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            }
        }
        break;
    case EVO_MODE_ITEM_USE:
    case EVO_MODE_ITEM_CHECK:
        for (i = 0; evolutions[i].method != EVOLUTIONS_END; i++)
        {
            if (SanitizeSpeciesId(evolutions[i].targetSpecies) == SPECIES_NONE)
                continue;

            switch (evolutions[i].method)
            {
            case EVO_ITEM:
                if (evolutions[i].param == evolutionItem)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_ITEM_FEMALE:
                if (GetMonGender(mon) == MON_FEMALE && evolutions[i].param == evolutionItem)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_ITEM_MALE:
                if (GetMonGender(mon) == MON_MALE && evolutions[i].param == evolutionItem)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_ITEM_NIGHT:
                if (GetTimeOfDay() == TIME_NIGHT && evolutions[i].param == evolutionItem)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_ITEM_DAY:
                if (GetTimeOfDay() != TIME_NIGHT && evolutions[i].param == evolutionItem)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            }
        }
        break;
    // Battle evolution without leveling; party slot is being passed into the evolutionItem arg.
    case EVO_MODE_BATTLE_SPECIAL:
        for (i = 0; evolutions[i].method != EVOLUTIONS_END; i++)
        {
            if (SanitizeSpeciesId(evolutions[i].targetSpecies) == SPECIES_NONE)
                continue;

            switch (evolutions[i].method)
            {
            case EVO_CRITICAL_HITS:
                if (gPartyCriticalHits[evolutionItem] >= evolutions[i].param)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            }
        }
        break;
    // Overworld evolution without leveling; evolution method is being passed into the evolutionItem arg.
    case EVO_MODE_OVERWORLD_SPECIAL:
        for (i = 0; evolutions[i].method != EVOLUTIONS_END; i++)
        {
            if (SanitizeSpeciesId(evolutions[i].targetSpecies) == SPECIES_NONE)
                continue;

            switch (evolutions[i].method)
            {
            case EVO_SCRIPT_TRIGGER_DMG:
            {
                u16 currentHp = GetMonData(mon, MON_DATA_HP, NULL);
                if (evolutionItem == EVO_SCRIPT_TRIGGER_DMG
                    && currentHp != 0
                    && (GetMonData(mon, MON_DATA_MAX_HP, NULL) - currentHp >= evolutions[i].param))
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            }
            case EVO_DARK_SCROLL:
                if (evolutionItem == EVO_DARK_SCROLL)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            case EVO_WATER_SCROLL:
                if (evolutionItem == EVO_WATER_SCROLL)
                    targetSpecies = evolutions[i].targetSpecies;
                break;
            }
        }
        break;
    }

    // Pikachu, Meowth, and Eevee cannot evolve if they have the
    // Gigantamax Factor. We assume that is because their evolutions
    // do not have a Gigantamax Form.
    if (GetMonData(mon, MON_DATA_GIGANTAMAX_FACTOR, NULL)
     && GetGMaxTargetSpecies(species) != SPECIES_NONE
     && GetGMaxTargetSpecies(targetSpecies) == SPECIES_NONE)
    {
        return SPECIES_NONE;
    }

    if (consumeItem)
    {
        heldItem = ITEM_NONE;
        SetMonData(mon, MON_DATA_HELD_ITEM, &heldItem);
    }

    return targetSpecies;
}

u16 NationalPokedexNumToSpecies(u16 nationalNum)
{
    u16 species;

    if (!nationalNum)
        return 0;

    species = 1;

    while (species < NUM_SPECIES && gSpeciesInfo[species].natDexNum != nationalNum)
        species++;

    if (species == NUM_SPECIES)
        return NATIONAL_DEX_NONE;

    return species;
}

u16 NationalToKantoOrder(u16 nationalNum)
{
    u16 kantoNum;

    if (!nationalNum)
        return 0;

    kantoNum = 0;

    while (kantoNum < (KANTO_DEX_COUNT - 1) && sKantoToNationalOrder[kantoNum] != nationalNum)
        kantoNum++;

    if (kantoNum >= KANTO_DEX_COUNT - 1)
        return 0;

    return kantoNum + 1;
}

static u16 NationalToHoennOrder(u16 nationalNum)
{
    u16 hoennNum;

    if (!nationalNum)
        return 0;

    hoennNum = 0;

    while (hoennNum < (HOENN_DEX_COUNT - 1) && sHoennToNationalOrder[hoennNum] != nationalNum)
        hoennNum++;

    if (hoennNum >= HOENN_DEX_COUNT - 1)
        return 0;

    return hoennNum + 1;
}

u16 SpeciesToNationalPokedexNum(u16 species)
{
    if (!species)
        return NATIONAL_DEX_NONE;

    return gSpeciesInfo[species].natDexNum;
}

u16 KantoToNationalOrder(u16 kantoNum)
{
    if (!kantoNum || kantoNum >= KANTO_DEX_COUNT)
        return 0;

    return sKantoToNationalOrder[kantoNum - 1];
}

u16 HoennToNationalOrder(u16 hoennNum)
{
    if (!hoennNum || hoennNum >= HOENN_DEX_COUNT)
        return 0;

    return sHoennToNationalOrder[hoennNum - 1];
}

u16 SpeciesToCryId(u16 species)
{
    species = SanitizeSpeciesId(species);
    return gSpeciesInfo[species].cryId;
}

// Spots can be drawn on Spinda's color indexes 1, 2, or 3
#define FIRST_SPOT_COLOR 1
#define LAST_SPOT_COLOR  3

// To draw a spot pixel, add 4 to the color index
#define SPOT_COLOR_ADJUSTMENT 4
/*
    The macro below handles drawing the randomly-placed spots on Spinda's front sprite.
    Spinda has 4 spots, each with an entry in sSpindaSpotGraphics. Each entry contains
    a base x and y coordinate for the spot and a 16x16 binary image. Each bit in the image
    determines whether that pixel should be considered part of the spot.

    The position of each spot is randomized using the Spinda's personality. The entire 32 bit
    personality value is used, 4 bits for each coordinate of the 4 spots. If the personality
    value is 0x87654321, then 0x1 will be used for the 1st spot's x coord, 0x2 will be used for
    the 1st spot's y coord, 0x3 will be used for the 2nd spot's x coord, and so on. Each
    coordinate is calculated as (baseCoord + (given 4 bits of personality) - 8). In effect this
    means each spot can start at any position -8 to +7 off of its base coordinates (256 possibilities).

    The macro then loops over the 16x16 spot image. For each bit in the spot's binary image, if
    the bit is set then it's part of the spot; try to draw it. A pixel is drawn on Spinda if the
    pixel on Spinda satisfies the following formula: ((u8)(colorIndex - 1) <= 2). The -1 excludes
    transparent pixels, as these are index 0. Therefore only colors 1, 2, or 3 on Spinda will
    allow a spot to be drawn. These color indexes are Spinda's light brown body colors. To create
    the spot it adds 4 to the color index, so Spinda's spots will be colors 5, 6, and 7.

    The above is done two different ways in the macro: one with << 4, and one without. This
    is because Spinda's sprite is a 4 bits per pixel image, but the pointer to Spinda's pixels
    (destPixels) is an 8 bit pointer, so it addresses two pixels. Shifting by 4 accesses the 2nd
    of these pixels, so this is done every other time.
*/
#define DRAW_SPINDA_SPOTS(personality, dest)                                    \
{                                                                               \
    s32 i;                                                                      \
    for (i = 0; i < (s32)ARRAY_COUNT(sSpindaSpotGraphics); i++)                 \
    {                                                                           \
        s32 row;                                                                \
        u8 x = sSpindaSpotGraphics[i].x + ((personality & 0x0F) - 8);           \
        u8 y = sSpindaSpotGraphics[i].y + (((personality & 0xF0) >> 4) - 8);    \
                                                                                \
        for (row = 0; row < SPINDA_SPOT_HEIGHT; row++)                          \
        {                                                                       \
            s32 column;                                                         \
            s32 spotPixelRow = sSpindaSpotGraphics[i].image[row];               \
                                                                                \
            for (column = x; column < x + SPINDA_SPOT_WIDTH; column++)          \
            {                                                                   \
                /* Get target pixels on Spinda's sprite */                      \
                u8 *destPixels = dest + ((column / 8) * TILE_SIZE_4BPP) +       \
                                        ((column % 8) / 2) +                    \
                                             ((y / 8) * TILE_SIZE_4BPP * 8) +   \
                                             ((y % 8) * 4);                     \
                                                                                \
                /* Is this pixel in the 16x16 spot image part of the spot? */   \
                if (spotPixelRow & 1)                                           \
                {                                                               \
                    /* destPixels addressess two pixels, alternate which */     \
                    /* of the two pixels is being considered for drawing */     \
                    if (column & 1)                                             \
                    {                                                           \
                        /* Draw spot pixel if this is Spinda's body color */    \
                        if ((u8)((*destPixels & 0xF0) - (FIRST_SPOT_COLOR << 4))\
                                 <= ((LAST_SPOT_COLOR - FIRST_SPOT_COLOR) << 4))\
                            *destPixels += (SPOT_COLOR_ADJUSTMENT << 4);        \
                    }                                                           \
                    else                                                        \
                    {                                                           \
                        /* Draw spot pixel if this is Spinda's body color */    \
                        if ((u8)((*destPixels & 0xF) - FIRST_SPOT_COLOR)        \
                                 <= (LAST_SPOT_COLOR - FIRST_SPOT_COLOR))       \
                            *destPixels += SPOT_COLOR_ADJUSTMENT;               \
                    }                                                           \
                }                                                               \
                                                                                \
                spotPixelRow >>= 1;                                             \
            }                                                                   \
                                                                                \
            y++;                                                                \
        }                                                                       \
                                                                                \
        personality >>= 8;                                                      \
    }                                                                           \
}

// Same as DrawSpindaSpots but attempts to discern for itself whether or
// not it's the front pic.
static void DrawSpindaSpotsUnused(u16 species, u32 personality, u8 *dest)
{
    if (species == SPECIES_SPINDA
        && dest != gMonSpritesGfxPtr->sprites[B_POSITION_PLAYER_LEFT]
        && dest != gMonSpritesGfxPtr->sprites[B_POSITION_PLAYER_RIGHT])
        DRAW_SPINDA_SPOTS(personality, dest);
}

void DrawSpindaSpots(u32 species, u32 personality, u8 *dest, bool8 isFrontPic)
{
    if (species == SPECIES_SPINDA && isFrontPic)
        DRAW_SPINDA_SPOTS(personality, dest);
}

void EvolutionRenameMon(struct Pokemon *mon, u16 oldSpecies, u16 newSpecies)
{
    u8 language;
    GetMonData(mon, MON_DATA_NICKNAME, gStringVar1);
    language = GetMonData(mon, MON_DATA_LANGUAGE, &language);
    if (language == GAME_LANGUAGE && !StringCompare(gSpeciesInfo[oldSpecies].speciesName, gStringVar1))
        SetMonData(mon, MON_DATA_NICKNAME, gSpeciesInfo[newSpecies].speciesName);
}

// The below two functions determine which side of a multi battle the trainer battles on
// 0 is the left (top in  party menu), 1 is right (bottom in party menu)
u8 GetPlayerFlankId(void)
{
    u8 flankId = 0;
    switch (gLinkPlayers[GetMultiplayerId()].id)
    {
    case 0:
    case 3:
        flankId = 0;
        break;
    case 1:
    case 2:
        flankId = 1;
        break;
    }
    return flankId;
}

u16 GetLinkTrainerFlankId(u8 linkPlayerId)
{
    u16 flankId = 0;
    switch (gLinkPlayers[linkPlayerId].id)
    {
    case 0:
    case 3:
        flankId = 0;
        break;
    case 1:
    case 2:
        flankId = 1;
        break;
    }
    return flankId;
}

s32 GetBattlerMultiplayerId(u16 id)
{
    s32 multiplayerId;
    for (multiplayerId = 0; multiplayerId < MAX_LINK_PLAYERS; multiplayerId++)
        if (gLinkPlayers[multiplayerId].id == id)
            break;
    return multiplayerId;
}

u8 GetTrainerEncounterMusicId(u16 trainerId)
{
    return TRAINER_ENCOUNTER_MUSIC(trainerId);
}

u16 ModifyStatByNature(u8 nature, u16 stat, u8 statIndex)
{
// Because this is a u16 it will be unable to store the
// result of the multiplication for any stat > 595 for a
// positive nature and > 728 for a negative nature.
// Neither occur in the base game, but this can happen if
// any Nature-affected base stat is increased to a value
// above 248. The closest by default is Shuckle at 230.
// #ifdef BUGFIX
    u32 retVal;
// #else
//     u16 retVal;
// #endif

    // Don't modify HP, Accuracy, or Evasion by nature
    if (statIndex <= STAT_HP || statIndex > NUM_NATURE_STATS)
        return stat;

    switch (gNatureStatTable[nature][statIndex - 1])
    {
    case 1:
        retVal = stat * 110;
        retVal /= 100;
        break;
    case -1:
        retVal = stat * 90;
        retVal /= 100;
        break;
    default:
        retVal = stat;
        break;
    }

    return retVal;
}

void AdjustFriendship(struct Pokemon *mon, u8 event)
{
    u16 species = GetMonData(mon, MON_DATA_SPECIES_OR_EGG, NULL);
    u16 heldItem = GetMonData(mon, MON_DATA_HELD_ITEM, NULL);
    u8 holdEffect;

    if (heldItem == ITEM_ENIGMA_BERRY)
    {
        if (gMain.inBattle)
            holdEffect = gEnigmaBerries[0].holdEffect;
        else
            holdEffect = gSaveBlock1Ptr->enigmaBerry.holdEffect;
    }
    else
    {
        holdEffect = ItemId_GetHoldEffect(heldItem);
    }

    if (species && species != SPECIES_EGG)
    {
        s8 delta;
        // Friendship level refers to the column in sFriendshipEventDeltas.
        // 0-99: Level 0 (maximum increase, typically)
        // 100-199: Level 1
        // 200-255: Level 2
        u8 friendshipLevel = 0;
        s16 friendship = GetMonData(mon, MON_DATA_FRIENDSHIP, NULL);
        if (friendship >= 100)
            friendshipLevel++;
        if (friendship >= 200)
            friendshipLevel++;

        if (event == FRIENDSHIP_EVENT_WALKING)
        {
            // 50% chance every 128 steps
            if (Random() & 1)
                return;
        }
        if (event == FRIENDSHIP_EVENT_LEAGUE_BATTLE)
        {
            // Only if it's a trainer battle with league progression significance
            if (!(gBattleTypeFlags & BATTLE_TYPE_TRAINER))
                return;
            if (!(gTrainers[gTrainerBattleOpponent_A].trainerClass == TRAINER_CLASS_LEADER
                || gTrainers[gTrainerBattleOpponent_A].trainerClass == TRAINER_CLASS_ELITE_FOUR
                || gTrainers[gTrainerBattleOpponent_A].trainerClass == TRAINER_CLASS_CHAMPION))
                return;
        }

        delta = sFriendshipEventDeltas[event][friendshipLevel];
        if (delta > 0 && holdEffect == HOLD_EFFECT_FRIENDSHIP_UP)
            // 50% increase, rounding down
            delta = (150 * delta) / 100;

        friendship += delta;
        if (delta > 0)
        {
            if (GetMonData(mon, MON_DATA_POKEBALL, NULL) == ITEM_LUXURY_BALL)
                friendship++;
            if (GetMonData(mon, MON_DATA_MET_LOCATION, NULL) == GetCurrentRegionMapSectionId())
                friendship++;
        }

        if (friendship < 0)
            friendship = 0;
        if (friendship > MAX_FRIENDSHIP)
            friendship = MAX_FRIENDSHIP;

        SetMonData(mon, MON_DATA_FRIENDSHIP, &friendship);
    }
}

void MonGainEVs(struct Pokemon *mon, u16 defeatedSpecies)
{
    u8 evs[NUM_STATS];
    u16 evIncrease = 0;
    u16 totalEVs = 0;
    u16 heldItem;
    u8 holdEffect;
    int i;

    for (i = 0; i < NUM_STATS; i++)
    {
        evs[i] = GetMonData(mon, MON_DATA_HP_EV + i, NULL);
        totalEVs += evs[i];
    }

    for (i = 0; i < NUM_STATS; i++)
    {
        u8 hasHadPokerus;
        int multiplier;

        if (totalEVs >= MAX_TOTAL_EVS)
            break;

        hasHadPokerus = CheckPartyHasHadPokerus(mon, 0);

        if (hasHadPokerus)
            multiplier = 2;
        else
            multiplier = 1;

        switch (i)
        {
        case STAT_HP:
            evIncrease = gSpeciesInfo[defeatedSpecies].evYield_HP * multiplier;
            break;
        case STAT_ATK:
            evIncrease = gSpeciesInfo[defeatedSpecies].evYield_Attack * multiplier;
            break;
        case STAT_DEF:
            evIncrease = gSpeciesInfo[defeatedSpecies].evYield_Defense * multiplier;
            break;
        case STAT_SPEED:
            evIncrease = gSpeciesInfo[defeatedSpecies].evYield_Speed * multiplier;
            break;
        case STAT_SPATK:
            evIncrease = gSpeciesInfo[defeatedSpecies].evYield_SpAttack * multiplier;
            break;
        case STAT_SPDEF:
            evIncrease = gSpeciesInfo[defeatedSpecies].evYield_SpDefense * multiplier;
            break;
        }

        heldItem = GetMonData(mon, MON_DATA_HELD_ITEM, NULL);

        if (heldItem == ITEM_ENIGMA_BERRY)
        {
            if (gMain.inBattle)
                holdEffect = gEnigmaBerries[0].holdEffect;
            else
                holdEffect = gSaveBlock1Ptr->enigmaBerry.holdEffect;
        }
        else
        {
            holdEffect = ItemId_GetHoldEffect(heldItem);
        }

        if (holdEffect == HOLD_EFFECT_MACHO_BRACE)
            evIncrease *= 2;

        if (totalEVs + (s16)evIncrease > MAX_TOTAL_EVS)
            evIncrease = ((s16)evIncrease + MAX_TOTAL_EVS) - (totalEVs + evIncrease);

        if (evs[i] + (s16)evIncrease > MAX_PER_STAT_EVS)
        {
            int val1 = (s16)evIncrease + MAX_PER_STAT_EVS;
            int val2 = evs[i] + evIncrease;
            evIncrease = val1 - val2;
        }

        evs[i] += evIncrease;
        totalEVs += evIncrease;
        SetMonData(mon, MON_DATA_HP_EV + i, &evs[i]);
    }
}

u16 GetMonEVCount(struct Pokemon *mon)
{
    int i;
    u16 count = 0;

    for (i = 0; i < NUM_STATS; i++)
        count += GetMonData(mon, MON_DATA_HP_EV + i, NULL);

    return count;
}

void RandomlyGivePartyPokerus(struct Pokemon *party)
{
    u16 rnd = Random();
    if (rnd == 0x4000 || rnd == 0x8000 || rnd == 0xC000)
    {
        struct Pokemon *mon;

        do
        {
            do
            {
                rnd = Random() % PARTY_SIZE;
                mon = &party[rnd];
            }
            while (!GetMonData(mon, MON_DATA_SPECIES, 0));
        }
        while (GetMonData(mon, MON_DATA_IS_EGG, 0));

        if (!(CheckPartyHasHadPokerus(party, gBitTable[rnd])))
        {
            u8 rnd2;

            do
            {
                rnd2 = Random();
            }
            while ((rnd2 & 0x7) == 0);

            if (rnd2 & 0xF0)
                rnd2 &= 0x7;

            rnd2 |= (rnd2 << 4);
            rnd2 &= 0xF3;
            rnd2++;

            SetMonData(&party[rnd], MON_DATA_POKERUS, &rnd2);
        }
    }
}

u8 CheckPartyPokerus(struct Pokemon *party, u8 selection)
{
    u8 retVal;

    int partyIndex = 0;
    unsigned curBit = 1;
    retVal = 0;

    if (selection)
    {
        do
        {
            if ((selection & 1) && (GetMonData(&party[partyIndex], MON_DATA_POKERUS, NULL) & 0xF))
                retVal |= curBit;
            partyIndex++;
            curBit <<= 1;
            selection >>= 1;
        }
        while (selection);
    }
    else if (GetMonData(&party[0], MON_DATA_POKERUS, NULL) & 0xF)
    {
        retVal = 1;
    }

    return retVal;
}

u8 CheckPartyHasHadPokerus(struct Pokemon *party, u8 selection)
{
    u8 retVal;

    int partyIndex = 0;
    unsigned curBit = 1;
    retVal = 0;

    if (selection)
    {
        do
        {
            if ((selection & 1) && GetMonData(&party[partyIndex], MON_DATA_POKERUS, NULL))
                retVal |= curBit;
            partyIndex++;
            curBit <<= 1;
            selection >>= 1;
        }
        while (selection);
    }
    else if (GetMonData(&party[0], MON_DATA_POKERUS, NULL))
    {
        retVal = 1;
    }

    return retVal;
}

// These two functions are stubbed from RS, but they're stubbed badly.
// See note on RandomlyGivePartyPokerus above.
void UpdatePartyPokerusTime(u16 days)
{
    int i;
    for (i = 0; i < PARTY_SIZE; i++)
    {
        if (GetMonData(&gPlayerParty[i], MON_DATA_SPECIES, 0))
        {
            u8 pokerus = GetMonData(&gPlayerParty[i], MON_DATA_POKERUS, 0);
            if (pokerus & 0xF)
            {
                if ((pokerus & 0xF) < days || days > 4)
                    pokerus &= 0xF0;
                else
                    pokerus -= days;

                if (pokerus == 0)
                    pokerus = 0x10;

                SetMonData(&gPlayerParty[i], MON_DATA_POKERUS, &pokerus);
            }
        }
    }
}

void PartySpreadPokerus(struct Pokemon *party)
{
    if ((Random() % 3) == 0)
    {
        int i;
        for (i = 0; i < PARTY_SIZE; i++)
        {
            if (GetMonData(&party[i], MON_DATA_SPECIES, 0))
            {
                u8 pokerus = GetMonData(&party[i], MON_DATA_POKERUS, 0);
                u8 curPokerus = pokerus;
                if (pokerus)
                {
                    if (pokerus & 0xF)
                    {
                        // Spread to adjacent party members.
                        if (i != 0 && !(GetMonData(&party[i - 1], MON_DATA_POKERUS, 0) & 0xF0))
                            SetMonData(&party[i - 1], MON_DATA_POKERUS, &curPokerus);
                        if (i != (PARTY_SIZE - 1) && !(GetMonData(&party[i + 1], MON_DATA_POKERUS, 0) & 0xF0))
                        {
                            SetMonData(&party[i + 1], MON_DATA_POKERUS, &curPokerus);
                            i++;
                        }
                    }
                }
            }
        }
    }
}

static void SetMonExpWithMaxLevelCheck(struct Pokemon *mon, int species, u8 unused, u32 data)
{
    if (data > gExperienceTables[gSpeciesInfo[species].growthRate][MAX_LEVEL])
    {
        data = gExperienceTables[gSpeciesInfo[species].growthRate][MAX_LEVEL];
        SetMonData(mon, MON_DATA_EXP, &data);
    }
}

bool8 TryIncrementMonLevel(struct Pokemon *mon)
{
    u16 species = GetMonData(mon, MON_DATA_SPECIES, NULL);
    u8 level = GetMonData(mon, MON_DATA_LEVEL, NULL);
    u8 newLevel = level + 1;
    u32 exp = GetMonData(mon, MON_DATA_EXP, NULL);

    if (level < MAX_LEVEL)
    {
        if (exp > gExperienceTables[gSpeciesInfo[species].growthRate][newLevel])
        {
            SetMonData(mon, MON_DATA_LEVEL, &newLevel);
            SetMonExpWithMaxLevelCheck(mon, species, newLevel, exp);
            return TRUE;
        }
        else
            return FALSE;
    }
    else
    {
        SetMonExpWithMaxLevelCheck(mon, species, level, exp);
        return FALSE;
    }
}

static const u16 sUniversalMoves[] =
{
    MOVE_BIDE,
    MOVE_FRUSTRATION,
    MOVE_HIDDEN_POWER,
    MOVE_MIMIC,
    MOVE_NATURAL_GIFT,
    MOVE_RAGE,
    MOVE_RETURN,
    MOVE_SECRET_POWER,
    MOVE_SUBSTITUTE,
    MOVE_TERA_BLAST,
};

u8 CanLearnTeachableMove(u16 species, u16 move)
{
    if (species == SPECIES_EGG)
    {
        return FALSE;
    }
    else if (species == SPECIES_MEW)
    {
        switch (move)
        {
        case MOVE_BADDY_BAD:
        case MOVE_BOUNCY_BUBBLE:
        case MOVE_BUZZY_BUZZ:
        case MOVE_DRAGON_ASCENT:
        case MOVE_FLOATY_FALL:
        case MOVE_FREEZY_FROST:
        case MOVE_GLITZY_GLOW:
        case MOVE_RELIC_SONG:
        case MOVE_SAPPY_SEED:
        case MOVE_SECRET_SWORD:
        case MOVE_SIZZLY_SLIDE:
        case MOVE_SPARKLY_SWIRL:
        case MOVE_SPLISHY_SPLASH:
        case MOVE_VOLT_TACKLE:
        case MOVE_ZIPPY_ZAP:
            return FALSE;
        default:
            return TRUE;
        }
    }
    else
    {
        u32 i, j;
        const u16 *teachableLearnset = GetSpeciesTeachableLearnset(species);
        for (i = 0; i < ARRAY_COUNT(sUniversalMoves); i++)
        {
            if (sUniversalMoves[i] == move)
            {
                if (!gSpeciesInfo[species].tmIlliterate)
                {
                    if (move == MOVE_TERA_BLAST && GET_BASE_SPECIES_ID(species) == SPECIES_TERAPAGOS)
                        return FALSE;
                    if (GET_BASE_SPECIES_ID(species) == SPECIES_PYUKUMUKU && (move == MOVE_HIDDEN_POWER || move == MOVE_RETURN || move == MOVE_FRUSTRATION))
                        return FALSE;
                    return TRUE;
                }
                else
                {
                    const struct LevelUpMove *learnset = GetSpeciesLevelUpLearnset(species);

                    if (P_TM_LITERACY < GEN_6)
                        return FALSE;

                    for (j = 0; j < MAX_LEVEL_UP_MOVES && learnset[j].move != LEVEL_UP_MOVE_END; j++)
                    {
                        if (learnset[j].move == move)
                            return TRUE;
                    }
                    return FALSE;
                }
            }
        }
        for (i = 0; teachableLearnset[i] != MOVE_UNAVAILABLE; i++)
        {
            if (teachableLearnset[i] == move)
                return TRUE;
        }
        return FALSE;
    }
}

u8 GetMoveRelearnerMoves(struct Pokemon *mon, u16 *moves)
{
    u16 learnedMoves[MAX_MON_MOVES];
    u8 numMoves = 0;
    u16 species = GetMonData(mon, MON_DATA_SPECIES, NULL);
    u8 level = GetMonData(mon, MON_DATA_LEVEL, NULL);
    int i, j, k;

    for (i = 0; i < MAX_MON_MOVES; i++)
        learnedMoves[i] = GetMonData(mon, MON_DATA_MOVE1 + i, NULL);

    for (i = 0; i < MAX_LEVEL_UP_MOVES; i++)
    {
        u16 moveLevel;

        if (gSpeciesInfo[species].levelUpLearnset[i].move == LEVEL_UP_MOVE_END)
            break;

        moveLevel = gSpeciesInfo[species].levelUpLearnset[i].level;

        if (moveLevel <= level)
        {
            for (j = 0; j < MAX_MON_MOVES && learnedMoves[j] != (gSpeciesInfo[species].levelUpLearnset[i].move); j++)
                ;

            if (j == MAX_MON_MOVES)
            {
                for (k = 0; k < numMoves && moves[k] != (gSpeciesInfo[species].levelUpLearnset[i].move); k++)
                    ;

                if (k == numMoves)
                    moves[numMoves++] = gSpeciesInfo[species].levelUpLearnset[i].move;
            }
        }
    }

    return numMoves;
}

u8 GetLevelUpMovesBySpecies(u16 species, u16 *moves)
{
    u8 numMoves = 0;
    int i;

    for (i = 0; i < MAX_LEVEL_UP_MOVES && gSpeciesInfo[species].levelUpLearnset[i].move != LEVEL_UP_MOVE_END; i++)
         moves[numMoves++] = gSpeciesInfo[species].levelUpLearnset[i].move;

     return numMoves;
}

u8 GetNumberOfRelearnableMoves(struct Pokemon *mon)
{
    u16 learnedMoves[MAX_MON_MOVES];
    u16 moves[MAX_LEVEL_UP_MOVES];
    u8 numMoves = 0;
    u16 species = GetMonData(mon, MON_DATA_SPECIES_OR_EGG, NULL);
    u8 level = GetMonData(mon, MON_DATA_LEVEL, NULL);
    int i, j, k;

    if (species == SPECIES_EGG)
        return 0;

    for (i = 0; i < MAX_MON_MOVES; i++)
        learnedMoves[i] = GetMonData(mon, MON_DATA_MOVE1 + i, NULL);

    for (i = 0; i < MAX_LEVEL_UP_MOVES; i++)
    {
        u16 moveLevel;

        if (gSpeciesInfo[species].levelUpLearnset[i].move == LEVEL_UP_MOVE_END)
            break;

        moveLevel = gSpeciesInfo[species].levelUpLearnset[i].level;

        if (moveLevel <= level)
        {
            for (j = 0; j < MAX_MON_MOVES && learnedMoves[j] != (gSpeciesInfo[species].levelUpLearnset[i].move); j++)
                ;

            if (j == MAX_MON_MOVES)
            {
                for (k = 0; k < numMoves && moves[k] != (gSpeciesInfo[species].levelUpLearnset[i].move); k++)
                    ;

                if (k == numMoves)
                    moves[numMoves++] = gSpeciesInfo[species].levelUpLearnset[i].move;
            }
        }
    }

    return numMoves;
}

u16 SpeciesToPokedexNum(u16 species)
{
    species = SpeciesToNationalPokedexNum(species);
    if (!IsNationalPokedexEnabled())
    {
        species = NationalToKantoOrder(species);
    }
    return species > 0 ? species : 0xFFFF;
}

static u16 GetBattleBGM(void)
{
    if (gBattleTypeFlags & BATTLE_TYPE_KYOGRE_GROUDON)
        return MUS_VS_WILD;
    if (gBattleTypeFlags & BATTLE_TYPE_REGI)
        return MUS_RS_VS_TRAINER;
    if (gBattleTypeFlags & BATTLE_TYPE_LINK)
        return MUS_RS_VS_TRAINER;
    if (gBattleTypeFlags & BATTLE_TYPE_TRAINER)
    {
        switch (gTrainers[gTrainerBattleOpponent_A].trainerClass)
        {
        case TRAINER_CLASS_CHAMPION:
            return MUS_VS_CHAMPION;
        case TRAINER_CLASS_LEADER:
        case TRAINER_CLASS_ELITE_FOUR:
            return MUS_VS_GYM_LEADER;
        case TRAINER_CLASS_BOSS:
        case TRAINER_CLASS_TEAM_ROCKET:
        case TRAINER_CLASS_COOLTRAINER:
        case TRAINER_CLASS_GENTLEMAN:
        case TRAINER_CLASS_RIVAL_LATE:
        default:
            return MUS_VS_TRAINER;
        }
    }
    return MUS_VS_WILD;
}

void PlayBattleBGM(void)
{
    ResetMapMusic();
    m4aMPlayAllStop();
    PlayBGM(GetBattleBGM());
}

void PlayMapChosenOrBattleBGM(u16 songId)
{
    ResetMapMusic();
    m4aMPlayAllStop();
    if (songId)
        PlayNewMapMusic(songId);
    else
        PlayNewMapMusic(GetBattleBGM());
}

const u32 *GetMonFrontSpritePal(struct Pokemon *mon)
{
    u16 species = GetMonData(mon, MON_DATA_SPECIES_OR_EGG, NULL);
    bool32 isShiny = GetMonData(mon, MON_DATA_IS_SHINY, NULL);
    u32 personality = GetMonData(mon, MON_DATA_PERSONALITY, NULL);
    return GetMonSpritePalFromSpeciesAndPersonality(species, isShiny, personality);
}

const u32 *GetMonSpritePalFromSpeciesAndPersonality(u16 species, bool32 isShiny, u32 personality)
{
    species = SanitizeSpeciesId(species);

    if (isShiny)
    {
        if (gSpeciesInfo[species].shinyPaletteFemale != NULL && IsPersonalityFemale(species, personality))
            return gSpeciesInfo[species].shinyPaletteFemale;
        else if (gSpeciesInfo[species].shinyPalette != NULL)
            return gSpeciesInfo[species].shinyPalette;
        else
            return gSpeciesInfo[SPECIES_NONE].shinyPalette;
    }
    else
    {
        if (gSpeciesInfo[species].paletteFemale != NULL && IsPersonalityFemale(species, personality))
            return gSpeciesInfo[species].paletteFemale;
        else if (gSpeciesInfo[species].palette != NULL)
            return gSpeciesInfo[species].palette;
        else
            return gSpeciesInfo[SPECIES_NONE].palette;
    }
}

bool32 IsMoveHM(u16 move)
{
    int i = 0;
    while (sHMMoves[i] != HM_MOVES_END)
    {
        if (sHMMoves[i++] == move)
            return TRUE;
    }
    return FALSE;
    // u8 i;

    // for (i = 0; i < NUM_HIDDEN_MACHINES - 1; ++i) // no dive
    //     if (gTMHMMoves[i + NUM_TECHNICAL_MACHINES] == move)
    //         return TRUE;
    // return FALSE;
}

bool8 IsMonSpriteNotFlipped(u16 species)
{
    return gSpeciesInfo[species].noFlip;
}

s8 GetFlavorRelationByPersonality(u32 personality, u8 flavor)
{
    u8 nature = GetNatureFromPersonality(personality);
    return sPokeblockFlavorCompatibilityTable[nature * FLAVOR_COUNT + flavor];
}

bool8 IsTradedMon(struct Pokemon *mon)
{
    u8 otName[PLAYER_NAME_LENGTH + 1];
    u32 otId;
    GetMonData(mon, MON_DATA_OT_NAME, otName);
    otId = GetMonData(mon, MON_DATA_OT_ID, NULL);
    return IsOtherTrainer(otId, otName);
}

bool8 IsOtherTrainer(u32 otId, u8 *otName)
{
    if (otId ==
        (gSaveBlock2Ptr->playerTrainerId[0]
         | (gSaveBlock2Ptr->playerTrainerId[1] << 8)
         | (gSaveBlock2Ptr->playerTrainerId[2] << 16)
         | (gSaveBlock2Ptr->playerTrainerId[3] << 24)))
    {
        int i;

        for (i = 0; otName[i] != EOS; i++)
            if (otName[i] != gSaveBlock2Ptr->playerName[i])
                return TRUE;
        return FALSE;
    }

    return TRUE;
}

void MonRestorePP(struct Pokemon *mon)
{
    BoxMonRestorePP(&mon->box);
}

void BoxMonRestorePP(struct BoxPokemon *boxMon)
{
    int i;

    for (i = 0; i < MAX_MON_MOVES; i++)
    {
        if (GetBoxMonData(boxMon, MON_DATA_MOVE1 + i, 0))
        {
            u16 move = GetBoxMonData(boxMon, MON_DATA_MOVE1 + i, 0);
            u16 bonus = GetBoxMonData(boxMon, MON_DATA_PP_BONUSES, 0);
            u8 pp = CalculatePPWithBonus(move, bonus, i);
            SetBoxMonData(boxMon, MON_DATA_PP1 + i, &pp);
        }
    }
}

void SetMonPreventsSwitchingString(void)
{
    gLastUsedAbility = gBattleStruct -> abilityPreventingSwitchout;
    gBattleTextBuff1[0] = B_BUFF_PLACEHOLDER_BEGIN;
    gBattleTextBuff1[1] = B_BUFF_MON_NICK_WITH_PREFIX;
    gBattleTextBuff1[2] = gBattleStruct->battlerPreventingSwitchout;
    gBattleTextBuff1[4] = B_BUFF_EOS;

    if (GetBattlerSide(gBattleStruct->battlerPreventingSwitchout) == B_SIDE_PLAYER)
        gBattleTextBuff1[3] = GetPartyIdFromBattlePartyId(gBattlerPartyIndexes[gBattleStruct->battlerPreventingSwitchout]);
    else
        gBattleTextBuff1[3] = gBattlerPartyIndexes[gBattleStruct->battlerPreventingSwitchout];

    PREPARE_MON_NICK_WITH_PREFIX_BUFFER(gBattleTextBuff2, gBattlerInMenuId, GetPartyIdFromBattlePartyId(gBattlerPartyIndexes[gBattlerInMenuId]))

    BattleStringExpandPlaceholders(gText_PkmnsXPreventsSwitching, gStringVar4);
}

static s32 GetWildMonTableIdInAlteringCave(u16 species)
{
    s32 i;
    for (i = 0; i < (s32) ARRAY_COUNT(sAlteringCaveWildMonHeldItems); i++)
        if (sAlteringCaveWildMonHeldItems[i].species == species)
            return i;
    return 0;
}

static inline bool32 CanFirstMonBoostHeldItemRarity(void)
{
    u32 ability;
    if (GetMonData(&gPlayerParty[0], MON_DATA_SANITY_IS_EGG))
        return FALSE;

    ability = GetMonAbility(&gPlayerParty[0]);
    if (/* (OW_COMPOUND_EYES < GEN_9) && */ ability == ABILITY_COMPOUND_EYES)
        return TRUE;
    else if (/* (OW_SUPER_LUCK == GEN_8) && */ ability == ABILITY_SUPER_LUCK)
        return TRUE;
    return FALSE;
}

void SetWildMonHeldItem(void)
{
    if (!(gBattleTypeFlags & (BATTLE_TYPE_POKEDUDE | BATTLE_TYPE_LEGENDARY | BATTLE_TYPE_TRAINER)))
    {
        u16 rnd;
        u16 species;
        u16 count = (WILD_DOUBLE_BATTLE) ? 2 : 1;
        u16 i;
        bool32 itemHeldBoost = CanFirstMonBoostHeldItemRarity();
        u16 chanceNoItem = itemHeldBoost ? 20 : 45;
        u16 chanceNotRare = itemHeldBoost ? 80 : 95;

        for (i = 0; i < count; i++)
        {
            if (GetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, NULL) != ITEM_NONE)
                continue; // prevent overwriting previously set item

            rnd = Random() % 100;
            species = GetMonData(&gEnemyParty[i], MON_DATA_SPECIES, 0);
            if (gMapHeader.mapLayoutId == LAYOUT_SIX_ISLAND_ALTERING_CAVE)
            {
                s32 alteringCaveId = GetWildMonTableIdInAlteringCave(species);
                if (alteringCaveId != 0)
                {
                    // In active Altering Cave, use special item list
                    if (rnd < chanceNotRare)
                        continue;
                    SetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, &sAlteringCaveWildMonHeldItems[alteringCaveId].item);
                }
                else
                {
                    // In inactive Altering Cave, use normal items
                    if (rnd < chanceNoItem)
                        continue;
                    if (rnd < chanceNotRare)
                        SetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, &gSpeciesInfo[species].itemCommon);
                    else
                        SetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, &gSpeciesInfo[species].itemRare);
                }
            }
            else
            {
                if (gSpeciesInfo[species].itemCommon == gSpeciesInfo[species].itemRare && gSpeciesInfo[species].itemCommon != ITEM_NONE)
                {
                    // Both held items are the same, 100% chance to hold item
                    SetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, &gSpeciesInfo[species].itemCommon);
                }
                else
                {
                    if (rnd < chanceNoItem)
                        continue;
                    if (rnd < chanceNotRare)
                        SetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, &gSpeciesInfo[species].itemCommon);
                    else
                        SetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, &gSpeciesInfo[species].itemRare);
                }
            }
        }
    }
}

bool8 IsMonShiny(struct Pokemon *mon)
{
    return GetMonData(mon, MON_DATA_IS_SHINY, NULL);
}

u8 *GetTrainerPartnerName(void)
{
    u8 id = GetMultiplayerId();
    return gLinkPlayers[GetBattlerMultiplayerId(gLinkPlayers[id].id ^ 2)].name;
}

u8 GetPlayerPartyHighestLevel(void)
{
    s32 slot;
    u8 level, monLevel;

    level = 1;
    for (slot = 0; slot < PARTY_SIZE; ++slot)
    {
        if (GetMonData(&gPlayerParty[slot], MON_DATA_SANITY_HAS_SPECIES, NULL) == 1 && !GetMonData(&gPlayerParty[slot], MON_DATA_SANITY_IS_EGG, NULL))
        {
            monLevel = GetMonData(&gPlayerParty[slot], MON_DATA_LEVEL, NULL);
            if (monLevel > level)
                level = monLevel;
        }
    }
    return level;
}

// If FALSE, should load this game's Deoxys form. If TRUE, should load normal Deoxys form
bool8 ShouldIgnoreDeoxysForm(u8 caseId, u8 battlerId)
{
    switch (caseId)
    {
    case 0:
    default:
        return FALSE;
    case DEOXYS_CHECK_BATTLE_SPRITE:
        if (!(gBattleTypeFlags & BATTLE_TYPE_MULTI))
            return FALSE;
        if (!gMain.inBattle)
            return FALSE;
        if (gLinkPlayers[GetMultiplayerId()].id == battlerId)
            return FALSE;
        break;
    case 2:
        break;
    case DEOXYS_CHECK_TRADE_MAIN:
        if (!(gBattleTypeFlags & BATTLE_TYPE_MULTI))
            return FALSE;
        if (!gMain.inBattle)
            return FALSE;
        if (battlerId == 1 || battlerId == 4 || battlerId == 5)
            return TRUE;
        return FALSE;
    case 4:
        break;
    case DEOXYS_CHECK_BATTLE_ANIM:
        if (gBattleTypeFlags & BATTLE_TYPE_LINK)
        {
            if (!gMain.inBattle)
                return FALSE;
            if (gBattleTypeFlags & BATTLE_TYPE_MULTI)
            {
                if (gLinkPlayers[GetMultiplayerId()].id == battlerId)
                    return FALSE;
            }
            else
            {
                if (GetBattlerSide(battlerId) == B_SIDE_PLAYER)
                    return FALSE;
            }
        }
        else
        {
            if (!gMain.inBattle)
                return FALSE;
            if (GetBattlerSide(battlerId) == B_SIDE_PLAYER)
                return FALSE;
        }
        break;
    }

    return TRUE;
}

u16 GetUnionRoomTrainerPic(void)
{
    u8 linkId = GetMultiplayerId() ^ 1;

    u32 arrId = gLinkPlayers[linkId].trainerId % NUM_UNION_ROOM_CLASSES;
    arrId |= gLinkPlayers[linkId].gender * NUM_UNION_ROOM_CLASSES;
    return FacilityClassToPicIndex(gUnionRoomFacilityClasses[arrId]);
}

u16 GetUnionRoomTrainerClass(void)
{
    u8 linkId = GetMultiplayerId() ^ 1;

    u32 arrId = gLinkPlayers[linkId].trainerId % NUM_UNION_ROOM_CLASSES;
    arrId |= gLinkPlayers[linkId].gender * NUM_UNION_ROOM_CLASSES;
    return gFacilityClassToTrainerClass[gUnionRoomFacilityClasses[arrId]];
}

void CreateEnemyEventMon(void)
{
    s32 species = gSpecialVar_0x8004;
    s32 level = gSpecialVar_0x8005;
    s32 itemId = gSpecialVar_0x8006;

    ZeroEnemyPartyMons();
    CreateEventMon(&gEnemyParty[0], species, level, USE_RANDOM_IVS, FALSE, 0, OT_ID_PLAYER_ID, 0);
    if (itemId)
    {
        u8 heldItem[2];
        heldItem[0] = itemId;
        heldItem[1] = itemId >> 8;
        SetMonData(&gEnemyParty[0], MON_DATA_HELD_ITEM, heldItem);
    }
}

u16 FacilityClassToPicIndex(u16 facilityClass)
{
    return gFacilityClassToPicIndex[facilityClass];
}

u16 PlayerGenderToFrontTrainerPicId(u8 playerGender)
{
    if (playerGender != MALE)
        return FacilityClassToPicIndex(FACILITY_CLASS_LEAF);
    else
        return FacilityClassToPicIndex(FACILITY_CLASS_RED);
}

void HandleSetPokedexFlag(u16 nationalNum, u8 caseId, u32 personality)
{
    u8 getFlagCaseId = (caseId == FLAG_SET_SEEN) ? FLAG_GET_SEEN : FLAG_GET_CAUGHT;
    
    if (!GetSetPokedexFlag(nationalNum, getFlagCaseId))
    {
        GetSetPokedexFlag(nationalNum, caseId);
        if (NationalPokedexNumToSpecies(nationalNum) == SPECIES_UNOWN)
            gSaveBlock2Ptr->pokedex.unownPersonality = personality;
        if (NationalPokedexNumToSpecies(nationalNum) == SPECIES_SPINDA)
            gSaveBlock2Ptr->pokedex.spindaPersonality = personality;
    }
}

bool8 CheckBattleTypeGhost(struct Pokemon *mon, u8 battlerId)
{
    u8 nickname[POKEMON_NAME_LENGTH + 1];

    if (gBattleTypeFlags & BATTLE_TYPE_GHOST && GetBattlerSide(battlerId) != B_SIDE_PLAYER)
    {
        GetMonData(mon, MON_DATA_NICKNAME, nickname);
        StringGet_Nickname(nickname);
        if (!StringCompare(nickname, gText_Ghost))
            return TRUE;
    }
    return FALSE;
}

#define ALLOC_FAIL_BUFFER (1 << 0)
#define ALLOC_FAIL_STRUCT (1 << 1)
#define GFX_MANAGER_ACTIVE 0xA3 // Arbitrary value

static void InitMonSpritesGfx_Mode1(struct MonSpritesGfxManager *structPtr, u8 battlePosition)
{
    u16 i = 0, j = 0;

    if (battlePosition >= MAX_BATTLERS_COUNT)
    {
        for (i = 0; i < (s8)structPtr->numSprites; ++i)
        {
            structPtr->templates[i] = gSpriteTemplates_Battlers[i];
            for (j = 0; j < structPtr->numFrames; ++j)
                structPtr->frameImages[i * structPtr->numFrames + j].data = &structPtr->spritePointers[i][j * MON_PIC_SIZE];
            structPtr->templates[i].images = &structPtr->frameImages[i * structPtr->numFrames];
        }
    }
    else
    {
        const struct SpriteTemplate *template = &gSpriteTemplates_Battlers[battlePosition];
        
        structPtr->templates[0] = *template;
        for (j = 0; j < structPtr->numFrames; ++j)
                structPtr->frameImages[j].data = &structPtr->spritePointers[0][j * MON_PIC_SIZE];
        structPtr->templates[0].images = structPtr->frameImages;
    }
}

// not used
static void InitMonSpritesGfx_Mode0(struct MonSpritesGfxManager *structPtr)
{
    u16 i, j;

    for (i = 0; i < (s8)structPtr->numSprites; ++i)
    {
        structPtr->templates[i] = sSpriteTemplate_64x64;
        for (j = 0; j < structPtr->numFrames; ++j)
            structPtr->frameImages[i * structPtr->numSprites + j].data = &structPtr->spritePointers[i][j * MON_PIC_SIZE];
        structPtr->templates[i].images = &structPtr->frameImages[i * structPtr->numSprites]; // should be numFrames logically
        structPtr->templates[i].anims = gAnims_MonPic;
        structPtr->templates[i].paletteTag = i;
    }
}

struct MonSpritesGfxManager *CreateMonSpritesGfxManager(u8 battlePosition, u8 mode)
{
    s32 size;
    u8 i, failureFlags = 0;

    if (sMonSpritesGfxManager != NULL)
    {
        if (sMonSpritesGfxManager->active == GFX_MANAGER_ACTIVE)
            return NULL;
        memset(sMonSpritesGfxManager, 0, sizeof(*sMonSpritesGfxManager));
        sMonSpritesGfxManager = NULL;
    }
    sMonSpritesGfxManager = AllocZeroed(sizeof(*sMonSpritesGfxManager));
    if (sMonSpritesGfxManager == NULL)
        return NULL;

    switch (mode)
    {
    case 1:
        if (battlePosition == MAX_BATTLERS_COUNT)
        {
            sMonSpritesGfxManager->numSprites = MAX_BATTLERS_COUNT;
            sMonSpritesGfxManager->battlePosition = MAX_BATTLERS_COUNT;
        }
        else
        {
            if (battlePosition > MAX_BATTLERS_COUNT)
                battlePosition = 0;
            sMonSpritesGfxManager->numSprites = 1;
            sMonSpritesGfxManager->battlePosition = 1;
        }
        sMonSpritesGfxManager->numFrames = MAX_MON_PIC_FRAMES;
        sMonSpritesGfxManager->mode = 1;
        break;
    case 0:
    default:
        if (!battlePosition)
            battlePosition = 1;
        if (battlePosition > 8)
            battlePosition = 8;
        sMonSpritesGfxManager->numSprites = (battlePosition << 16) >> 16;
        sMonSpritesGfxManager->battlePosition = battlePosition;
        sMonSpritesGfxManager->numFrames = 4;
        sMonSpritesGfxManager->mode = 0;
        break;
    }

    // Set up sprite / sprite pointer buffers
    size = sMonSpritesGfxManager->numFrames * MON_PIC_SIZE;
    sMonSpritesGfxManager->dataSize = size;
    sMonSpritesGfxManager->spriteBuffer = AllocZeroed(sMonSpritesGfxManager->numSprites * size);
    sMonSpritesGfxManager->spritePointers = AllocZeroed(sMonSpritesGfxManager->numSprites * 32); // ? Only * 4 is necessary, perhaps they were thinking bits.
    if (sMonSpritesGfxManager->spriteBuffer == NULL ||  sMonSpritesGfxManager->spritePointers == NULL)
    {
        failureFlags |= ALLOC_FAIL_BUFFER;
    }
    else
    {
        do
        {
            for (i = 0; i < (s8)sMonSpritesGfxManager->numSprites; ++i)
                sMonSpritesGfxManager->spritePointers[i] = &sMonSpritesGfxManager->spriteBuffer[sMonSpritesGfxManager->dataSize * i];
        } while (0);
    }

    // Set up sprite structs
    sMonSpritesGfxManager->templates = AllocZeroed(sizeof(struct SpriteTemplate) * sMonSpritesGfxManager->numSprites);
    sMonSpritesGfxManager->frameImages = AllocZeroed(sMonSpritesGfxManager->numSprites * sizeof(struct SpriteFrameImage) * sMonSpritesGfxManager->numFrames);
    if (sMonSpritesGfxManager->templates == NULL || sMonSpritesGfxManager->frameImages == NULL)
    {
        failureFlags |= ALLOC_FAIL_STRUCT;
    }
    else
    {
        for (i = 0; i < sMonSpritesGfxManager->numFrames * sMonSpritesGfxManager->numSprites; i++)
                sMonSpritesGfxManager->frameImages[i].size = MON_PIC_SIZE;
        switch (sMonSpritesGfxManager->mode)
        {
        case 1:
            InitMonSpritesGfx_Mode1(sMonSpritesGfxManager, battlePosition);
            break;
        case 0:
        default:
            InitMonSpritesGfx_Mode0(sMonSpritesGfxManager);
            break;
        }
    }

    // If either of the allocations failed free their respective members
    if (failureFlags & ALLOC_FAIL_STRUCT)
    {
        TRY_FREE_AND_SET_NULL(sMonSpritesGfxManager->frameImages);
        TRY_FREE_AND_SET_NULL(sMonSpritesGfxManager->templates);
    }
    if (failureFlags & ALLOC_FAIL_BUFFER)
    {
        TRY_FREE_AND_SET_NULL(sMonSpritesGfxManager->spritePointers);
        TRY_FREE_AND_SET_NULL(sMonSpritesGfxManager->spriteBuffer);
    }

    if (failureFlags)
    {
        // Clear, something failed to allocate
        memset(sMonSpritesGfxManager, 0, sizeof(*sMonSpritesGfxManager));
        FREE_AND_SET_NULL(sMonSpritesGfxManager);
    }
    else
    {
        sMonSpritesGfxManager->active = GFX_MANAGER_ACTIVE;
    }
    return sMonSpritesGfxManager;
}

void DestroyMonSpritesGfxManager(void)
{
    if (sMonSpritesGfxManager != NULL)
    {
        if (sMonSpritesGfxManager->active != GFX_MANAGER_ACTIVE)
        {
            memset(sMonSpritesGfxManager, 0, sizeof(*sMonSpritesGfxManager));
            sMonSpritesGfxManager = NULL;
        }
        else
        {
            TRY_FREE_AND_SET_NULL(sMonSpritesGfxManager->frameImages);
            TRY_FREE_AND_SET_NULL(sMonSpritesGfxManager->templates);
            TRY_FREE_AND_SET_NULL(sMonSpritesGfxManager->spritePointers);                    
            TRY_FREE_AND_SET_NULL(sMonSpritesGfxManager->spriteBuffer);
            memset(sMonSpritesGfxManager, 0, sizeof(*sMonSpritesGfxManager));
            FREE_AND_SET_NULL(sMonSpritesGfxManager);
        }

    }
}

u8 *MonSpritesGfxManager_GetSpritePtr(u8 spriteNum)
{
    if (sMonSpritesGfxManager->active != GFX_MANAGER_ACTIVE)
    {
        return NULL;
    }
    else
    {
        if (spriteNum >= (s8)sMonSpritesGfxManager->numSprites)
            spriteNum = 0;
        return sMonSpritesGfxManager->spritePointers[spriteNum];
    }
}



u16 SanitizeSpeciesId(u16 species)
{
    if (species > NUM_SPECIES || !IsSpeciesEnabled(species))
        return SPECIES_NONE;
    else
        return species;
}

bool32 IsSpeciesEnabled(u16 species)
{
    return gSpeciesInfo[species].baseHP > 0 || species == SPECIES_EGG;
}

u32 GetUnownSpeciesId(u32 personality)
{
    u16 unownLetter = GetUnownLetterByPersonality(personality);

    if (unownLetter == 0)
        return SPECIES_UNOWN;
    return unownLetter + SPECIES_UNOWN_B - 1;
}

static bool8 ShouldSkipFriendshipChange(void)
{
    if (gMain.inBattle && gBattleTypeFlags & (BATTLE_TYPE_BATTLE_TOWER))
        return TRUE;
    return FALSE;
}

static void RemoveIVIndexFromList(u8 *ivs, u8 selectedIv)
{
    s32 i, j;
    u8 temp[NUM_STATS];

    ivs[selectedIv] = 0xFF;
    for (i = 0; i < NUM_STATS; i++)
    {
        temp[i] = ivs[i];
    }

    j = 0;
    for (i = 0; i < NUM_STATS; i++)
    {
        if (temp[i] != 0xFF)
            ivs[j++] = temp[i];
    }
}

u16 GetFormSpeciesId(u16 speciesId, u8 formId)
{
    if (GetSpeciesFormTable(speciesId) != NULL)
        return GetSpeciesFormTable(speciesId)[formId];
    else
        return speciesId;
}

u8 GetFormIdFromFormSpeciesId(u16 formSpeciesId)
{
    u8 targetFormId = 0;

    if (GetSpeciesFormTable(formSpeciesId) != NULL)
    {
        for (targetFormId = 0; GetSpeciesFormTable(formSpeciesId)[targetFormId] != FORM_SPECIES_END; targetFormId++)
        {
            if (formSpeciesId == GetSpeciesFormTable(formSpeciesId)[targetFormId])
                break;
        }
    }
    return targetFormId;
}

u16 GetFormChangeTargetSpecies(struct Pokemon *mon, u16 method, u32 arg)
{
    return GetFormChangeTargetSpeciesBoxMon(&mon->box, method, arg);
}

// Returns SPECIES_NONE if no form change is possible
u16 GetFormChangeTargetSpeciesBoxMon(struct BoxPokemon *boxMon, u16 method, u32 arg)
{
    u32 i;
    u16 targetSpecies = SPECIES_NONE;
    u16 species = GetBoxMonData(boxMon, MON_DATA_SPECIES, NULL);
    const struct FormChange *formChanges = GetSpeciesFormChanges(species);
    u16 heldItem;
    u32 ability;

    if (formChanges != NULL)
    {
        heldItem = GetBoxMonData(boxMon, MON_DATA_HELD_ITEM, NULL);
        ability = GetAbilityBySpecies(species, GetBoxMonData(boxMon, MON_DATA_ABILITY_NUM, NULL));

        for (i = 0; formChanges[i].method != FORM_CHANGE_TERMINATOR; i++)
        {
            if (method == formChanges[i].method && species != formChanges[i].targetSpecies)
            {
                switch (method)
                {
                case FORM_CHANGE_ITEM_HOLD:
                    if ((heldItem == formChanges[i].param1 || formChanges[i].param1 == ITEM_NONE)
                     && (ability == formChanges[i].param2 || formChanges[i].param2 == ABILITY_NONE))
                        targetSpecies = formChanges[i].targetSpecies;
                    break;
                case FORM_CHANGE_ITEM_USE:
                    if (arg == formChanges[i].param1)
                    {
                        switch (formChanges[i].param2)
                        {
                        case DAY:
                            if (GetTimeOfDay() != TIME_NIGHT)
                                targetSpecies = formChanges[i].targetSpecies;
                            break;
                        case NIGHT:
                            if (GetTimeOfDay() == TIME_NIGHT)
                                targetSpecies = formChanges[i].targetSpecies;
                            break;
                        default:
                            targetSpecies = formChanges[i].targetSpecies;
                            break;
                        }
                    }
                    break;
                case FORM_CHANGE_ITEM_USE_MULTICHOICE:
                    if (arg == formChanges[i].param1)
                    {
                        if (formChanges[i].param2 == gSpecialVar_Result)
                            targetSpecies = formChanges[i].targetSpecies;
                    }
                    break;
                case FORM_CHANGE_MOVE:
                    if (BoxMonKnowsMove(boxMon, formChanges[i].param1) != formChanges[i].param2)
                        targetSpecies = formChanges[i].targetSpecies;
                    break;
                case FORM_CHANGE_BEGIN_BATTLE:
                case FORM_CHANGE_END_BATTLE:
                    if (heldItem == formChanges[i].param1 || formChanges[i].param1 == ITEM_NONE)
                        targetSpecies = formChanges[i].targetSpecies;
                    break;
                case FORM_CHANGE_END_BATTLE_TERRAIN:
                    if (gBattleTerrain == formChanges[i].param1)
                        targetSpecies = formChanges[i].targetSpecies;
                    break;
                case FORM_CHANGE_WITHDRAW:
                case FORM_CHANGE_FAINT:
                case FORM_CHANGE_STATUS:
                    targetSpecies = formChanges[i].targetSpecies;
                    break;
                case FORM_CHANGE_TIME_OF_DAY:
                    switch (formChanges[i].param1)
                    {
                    case DAY:
                        if (GetTimeOfDay() != TIME_NIGHT)
                            targetSpecies = formChanges[i].targetSpecies;
                        break;
                    case NIGHT:
                        if (GetTimeOfDay() == TIME_NIGHT)
                            targetSpecies = formChanges[i].targetSpecies;
                        break;
                    }
                    break;
                }
            }
        }
    }

    return targetSpecies;
}

bool32 DoesSpeciesHaveFormChangeMethod(u16 species, u16 method)
{
    u32 i;
    const struct FormChange *formChanges = GetSpeciesFormChanges(species);

    if (formChanges != NULL)
    {
        for (i = 0; formChanges[i].method != FORM_CHANGE_TERMINATOR; i++)
        {
            if (method == formChanges[i].method && species != formChanges[i].targetSpecies)
                return TRUE;
        }
    }

    return FALSE;
}

u32 GetMonAffectionHearts(struct Pokemon *pokemon)
{
    u32 friendship = GetMonData(pokemon, MON_DATA_FRIENDSHIP, NULL);

    if (friendship == MAX_FRIENDSHIP)
        return AFFECTION_FIVE_HEARTS;
    if (friendship >= 220)
        return AFFECTION_FOUR_HEARTS;
    if (friendship >= 180)
        return AFFECTION_THREE_HEARTS;
    if (friendship >= 130)
        return AFFECTION_TWO_HEARTS;
    if (friendship >= 80)
        return AFFECTION_ONE_HEART;

    return AFFECTION_NO_HEARTS;
}

void TryToSetBattleFormChangeMoves(struct Pokemon *mon, u16 method)
{
    int i, j;
    u16 species = GetMonData(mon, MON_DATA_SPECIES, NULL);
    const struct FormChange *formChanges = GetSpeciesFormChanges(species);

    if (formChanges == NULL
        || (method != FORM_CHANGE_BEGIN_BATTLE && method != FORM_CHANGE_END_BATTLE))
        return;

    for (i = 0; formChanges[i].method != FORM_CHANGE_TERMINATOR; i++)
    {
        if (formChanges[i].method == method
            && formChanges[i].param2
            && formChanges[i].param3
            && formChanges[i].targetSpecies != species)
        {
            u16 originalMove = formChanges[i].param2;
            u16 newMove = formChanges[i].param3;

            for (j = 0; j < MAX_MON_MOVES; j++)
            {
                u16 currMove = GetMonData(mon, MON_DATA_MOVE1 + j, NULL);
                if (currMove == originalMove)
                    SetMonMoveSlot_KeepPP(mon, newMove, j);
            }
            break;
        }
    }
}

bool8 IsMonPastEvolutionLevel(struct Pokemon *mon)
{
    int i;
    u16 species = GetMonData(mon, MON_DATA_SPECIES, 0);
    u8 level = GetMonData(mon, MON_DATA_LEVEL, 0);
    const struct Evolution *evolutions = GetSpeciesEvolutions(species);

    if (evolutions == NULL)
        return FALSE;

    for (i = 0; evolutions[i].method != EVOLUTIONS_END; i++)
    {
        if (SanitizeSpeciesId(evolutions[i].targetSpecies) == SPECIES_NONE)
            continue;

        switch (evolutions[i].method)
        {
        case EVO_LEVEL:
            if (evolutions[i].param <= level)
                return TRUE;
            break;
        }
    }

    return FALSE;
}

bool32 IsPersonalityFemale(u16 species, u32 personality)
{
    return GetGenderFromSpeciesAndPersonality(species, personality) == MON_FEMALE;
}

bool32 TryFormChange(u32 monId, u32 side, u16 method)
{
    struct Pokemon *party = (side == B_SIDE_PLAYER) ? gPlayerParty : gEnemyParty;
    u16 targetSpecies;

    if (GetMonData(&party[monId], MON_DATA_SPECIES_OR_EGG, 0) == SPECIES_NONE
     || GetMonData(&party[monId], MON_DATA_SPECIES_OR_EGG, 0) == SPECIES_EGG)
        return FALSE;

    targetSpecies = GetFormChangeTargetSpecies(&party[monId], method, 0);

    if (targetSpecies == SPECIES_NONE && gBattleStruct != NULL)
        targetSpecies = gBattleStruct->changedSpecies[side][monId];

    if (targetSpecies != SPECIES_NONE)
    {
        TryToSetBattleFormChangeMoves(&party[monId], method);
        SetMonData(&party[monId], MON_DATA_SPECIES, &targetSpecies);
        CalculateMonStats(&party[monId]);
        return TRUE;
    }

    return FALSE;
}

u16 GetFirstPartnerMove(u16 species)
{
    switch(species)
    {
        case SPECIES_VENUSAUR:
        case SPECIES_MEGANIUM:
        case SPECIES_SCEPTILE:
        case SPECIES_TORTERRA:
        case SPECIES_SERPERIOR:
        case SPECIES_CHESNAUGHT:
        case SPECIES_DECIDUEYE:
        case SPECIES_DECIDUEYE_HISUIAN:
        case SPECIES_RILLABOOM:
        case SPECIES_MEOWSCARADA:
            return MOVE_FRENZY_PLANT;
        case SPECIES_CHARIZARD:
        case SPECIES_TYPHLOSION:
        case SPECIES_TYPHLOSION_HISUIAN:
        case SPECIES_BLAZIKEN:
        case SPECIES_INFERNAPE:
        case SPECIES_EMBOAR:
        case SPECIES_DELPHOX:
        case SPECIES_INCINEROAR:
        case SPECIES_CINDERACE:
        case SPECIES_SKELEDIRGE:
            return MOVE_BLAST_BURN;
        case SPECIES_BLASTOISE:
        case SPECIES_FERALIGATR:
        case SPECIES_SWAMPERT:
        case SPECIES_EMPOLEON:
        case SPECIES_SAMUROTT:
        case SPECIES_SAMUROTT_HISUIAN:
        case SPECIES_GRENINJA:
        case SPECIES_GRENINJA_ASH:
        case SPECIES_GRENINJA_BATTLE_BOND:
        case SPECIES_PRIMARINA:
        case SPECIES_INTELEON:
        case SPECIES_QUAQUAVAL:
            return MOVE_HYDRO_CANNON;
        default:
            return MOVE_NONE;
    }
}