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https://github.com/pret/pokefirered.git
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265 lines
9.3 KiB
C
265 lines
9.3 KiB
C
#include "global.h"
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#include "random.h"
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#include "overworld.h"
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#include "field_specials.h"
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#include "constants/maps.h"
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#include "constants/region_map_sections.h"
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// Despite having a variable to track it, the roamer is
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// hard-coded to only ever be in map group 3
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#define ROAMER_MAP_GROUP 3
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enum
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{
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MAP_GRP, // map group
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MAP_NUM, // map number
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};
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#define ROAMER (&gSaveBlock1Ptr->roamer)
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EWRAM_DATA u8 sLocationHistory[3][2] = {};
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EWRAM_DATA u8 sRoamerLocation[2] = {};
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#define ___ MAP_NUM(UNDEFINED) // For empty spots in the location table
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// Note: There are two potential softlocks that can occur with this table if its maps are
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// changed in particular ways. They can be avoided by ensuring the following:
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// - There must be at least 2 location sets that start with a different map,
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// i.e. every location set cannot start with the same map. This is because of
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// the while loop in RoamerMoveToOtherLocationSet.
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// - Each location set must have at least 3 unique maps. This is because of
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// the while loop in RoamerMove. In this loop the first map in the set is
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// ignored, and an additional map is ignored if the roamer was there recently.
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// - Additionally, while not a softlock, it's worth noting that if for any
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// map in the location table there is not a location set that starts with
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// that map then the roamer will be significantly less likely to move away
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// from that map when it lands there.
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static const u8 sRoamerLocations[][7] = {
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{MAP_NUM(ROUTE1), MAP_NUM(ROUTE2), MAP_NUM(ROUTE21_NORTH), MAP_NUM(ROUTE22), ___, ___, ___},
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{MAP_NUM(ROUTE2), MAP_NUM(ROUTE1), MAP_NUM(ROUTE3), MAP_NUM(ROUTE22), ___, ___, ___},
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{MAP_NUM(ROUTE3), MAP_NUM(ROUTE2), MAP_NUM(ROUTE4), ___, ___, ___, ___},
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{MAP_NUM(ROUTE4), MAP_NUM(ROUTE3), MAP_NUM(ROUTE5), MAP_NUM(ROUTE9), MAP_NUM(ROUTE24), ___, ___},
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{MAP_NUM(ROUTE5), MAP_NUM(ROUTE4), MAP_NUM(ROUTE6), MAP_NUM(ROUTE7), MAP_NUM(ROUTE8), MAP_NUM(ROUTE9), MAP_NUM(ROUTE24)},
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{MAP_NUM(ROUTE6), MAP_NUM(ROUTE5), MAP_NUM(ROUTE7), MAP_NUM(ROUTE8), MAP_NUM(ROUTE11), ___, ___},
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{MAP_NUM(ROUTE7), MAP_NUM(ROUTE5), MAP_NUM(ROUTE6), MAP_NUM(ROUTE8), MAP_NUM(ROUTE16), ___, ___},
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{MAP_NUM(ROUTE8), MAP_NUM(ROUTE5), MAP_NUM(ROUTE6), MAP_NUM(ROUTE7), MAP_NUM(ROUTE10), MAP_NUM(ROUTE12), ___},
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{MAP_NUM(ROUTE9), MAP_NUM(ROUTE4), MAP_NUM(ROUTE5), MAP_NUM(ROUTE10), MAP_NUM(ROUTE24), ___, ___},
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{MAP_NUM(ROUTE10), MAP_NUM(ROUTE8), MAP_NUM(ROUTE9), MAP_NUM(ROUTE12), ___, ___, ___},
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{MAP_NUM(ROUTE11), MAP_NUM(ROUTE6), MAP_NUM(ROUTE12), ___, ___, ___, ___},
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{MAP_NUM(ROUTE12), MAP_NUM(ROUTE10), MAP_NUM(ROUTE11), MAP_NUM(ROUTE13), ___, ___, ___},
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{MAP_NUM(ROUTE13), MAP_NUM(ROUTE12), MAP_NUM(ROUTE14), ___, ___, ___, ___},
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{MAP_NUM(ROUTE14), MAP_NUM(ROUTE13), MAP_NUM(ROUTE15), ___, ___, ___, ___},
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{MAP_NUM(ROUTE15), MAP_NUM(ROUTE14), MAP_NUM(ROUTE18), MAP_NUM(ROUTE19), ___, ___, ___},
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{MAP_NUM(ROUTE16), MAP_NUM(ROUTE7), MAP_NUM(ROUTE17), ___, ___, ___, ___},
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{MAP_NUM(ROUTE17), MAP_NUM(ROUTE16), MAP_NUM(ROUTE18), ___, ___, ___, ___},
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{MAP_NUM(ROUTE18), MAP_NUM(ROUTE15), MAP_NUM(ROUTE17), MAP_NUM(ROUTE19), ___, ___, ___},
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{MAP_NUM(ROUTE19), MAP_NUM(ROUTE15), MAP_NUM(ROUTE18), MAP_NUM(ROUTE20), ___, ___, ___},
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{MAP_NUM(ROUTE20), MAP_NUM(ROUTE19), MAP_NUM(ROUTE21_NORTH), ___, ___, ___, ___},
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{MAP_NUM(ROUTE21_NORTH), MAP_NUM(ROUTE1), MAP_NUM(ROUTE20), ___, ___, ___, ___},
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{MAP_NUM(ROUTE22), MAP_NUM(ROUTE1), MAP_NUM(ROUTE2), MAP_NUM(ROUTE23), ___, ___, ___},
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{MAP_NUM(ROUTE23), MAP_NUM(ROUTE22), MAP_NUM(ROUTE2), ___, ___, ___, ___},
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{MAP_NUM(ROUTE24), MAP_NUM(ROUTE4), MAP_NUM(ROUTE5), MAP_NUM(ROUTE9), ___, ___, ___},
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{MAP_NUM(ROUTE25), MAP_NUM(ROUTE24), MAP_NUM(ROUTE9), ___, ___, ___, ___},
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{___, ___, ___, ___, ___, ___, ___}
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};
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#undef ___
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#define NUM_LOCATION_SETS (ARRAY_COUNT(sRoamerLocations) - 1)
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#define NUM_LOCATIONS_PER_SET (ARRAY_COUNT(sRoamerLocations[0]))
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void ClearRoamerData(void)
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{
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u32 i;
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*ROAMER = (struct Roamer){};
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sRoamerLocation[MAP_GRP] = 0;
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sRoamerLocation[MAP_NUM] = 0;
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for (i = 0; i < ARRAY_COUNT(sLocationHistory); i++)
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{
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sLocationHistory[i][MAP_GRP] = 0;
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sLocationHistory[i][MAP_NUM] = 0;
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}
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}
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#define GetRoamerSpecies() ({\
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u16 a;\
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switch (GetStarterSpecies())\
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{\
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default:\
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a = SPECIES_RAIKOU;\
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break;\
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case SPECIES_BULBASAUR:\
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a = SPECIES_ENTEI;\
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break;\
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case SPECIES_CHARMANDER:\
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a = SPECIES_SUICUNE;\
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break;\
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}\
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a;\
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})
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void CreateInitialRoamerMon(void)
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{
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struct Pokemon * mon = &gEnemyParty[0];
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u16 species = GetRoamerSpecies();
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CreateMon(mon, species, 50, USE_RANDOM_IVS, FALSE, 0, OT_ID_PLAYER_ID, 0);
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ROAMER->species = species;
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ROAMER->level = 50;
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ROAMER->status = 0;
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ROAMER->active = TRUE;
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ROAMER->ivs = GetMonData(mon, MON_DATA_IVS);
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ROAMER->personality = GetMonData(mon, MON_DATA_PERSONALITY);
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ROAMER->hp = GetMonData(mon, MON_DATA_MAX_HP);
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ROAMER->cool = GetMonData(mon, MON_DATA_COOL);
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ROAMER->beauty = GetMonData(mon, MON_DATA_BEAUTY);
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ROAMER->cute = GetMonData(mon, MON_DATA_CUTE);
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ROAMER->smart = GetMonData(mon, MON_DATA_SMART);
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ROAMER->tough = GetMonData(mon, MON_DATA_TOUGH);
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sRoamerLocation[MAP_GRP] = ROAMER_MAP_GROUP;
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sRoamerLocation[MAP_NUM] = sRoamerLocations[Random() % NUM_LOCATION_SETS][0];
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}
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void InitRoamer(void)
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{
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ClearRoamerData();
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CreateInitialRoamerMon();
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}
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void UpdateLocationHistoryForRoamer(void)
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{
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sLocationHistory[2][MAP_GRP] = sLocationHistory[1][MAP_GRP];
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sLocationHistory[2][MAP_NUM] = sLocationHistory[1][MAP_NUM];
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sLocationHistory[1][MAP_GRP] = sLocationHistory[0][MAP_GRP];
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sLocationHistory[1][MAP_NUM] = sLocationHistory[0][MAP_NUM];
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sLocationHistory[0][MAP_GRP] = gSaveBlock1Ptr->location.mapGroup;
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sLocationHistory[0][MAP_NUM] = gSaveBlock1Ptr->location.mapNum;
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}
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void RoamerMoveToOtherLocationSet(void)
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{
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u8 mapNum = 0;
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if (!ROAMER->active)
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return;
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sRoamerLocation[MAP_GRP] = ROAMER_MAP_GROUP;
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// Choose a location set that starts with a map
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// different from the roamer's current map
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while (1)
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{
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mapNum = sRoamerLocations[Random() % NUM_LOCATION_SETS][0];
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if (sRoamerLocation[MAP_NUM] != mapNum)
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{
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sRoamerLocation[MAP_NUM] = mapNum;
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return;
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}
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}
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}
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void RoamerMove(void)
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{
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u8 locSet = 0;
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if ((Random() % 16) == 0)
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{
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RoamerMoveToOtherLocationSet();
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}
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else
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{
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if (!ROAMER->active)
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return;
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while (locSet < NUM_LOCATION_SETS)
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{
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// Find the location set that starts with the roamer's current map
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if (sRoamerLocation[MAP_NUM] == sRoamerLocations[locSet][0])
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{
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u8 mapNum;
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while (1)
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{
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// Choose a new map (excluding the first) within this set
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// Also exclude a map if the roamer was there 2 moves ago
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mapNum = sRoamerLocations[locSet][(Random() % (NUM_LOCATIONS_PER_SET - 1)) + 1];
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if (!(sLocationHistory[2][MAP_GRP] == ROAMER_MAP_GROUP
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&& sLocationHistory[2][MAP_NUM] == mapNum)
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&& mapNum != MAP_NUM(UNDEFINED))
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break;
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}
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sRoamerLocation[MAP_NUM] = mapNum;
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return;
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}
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locSet++;
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}
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}
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}
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bool8 IsRoamerAt(u8 mapGroup, u8 mapNum)
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{
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if (ROAMER->active && mapGroup == sRoamerLocation[MAP_GRP] && mapNum == sRoamerLocation[MAP_NUM])
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return TRUE;
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else
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return FALSE;
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}
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void CreateRoamerMonInstance(void)
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{
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u32 status;
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struct Pokemon *mon = &gEnemyParty[0];
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ZeroEnemyPartyMons();
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CreateMonWithIVsPersonality(mon, ROAMER->species, ROAMER->level, ROAMER->ivs, ROAMER->personality);
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// The roamer's status field is u8, but SetMonData expects status to be u32, so will set the roamer's status
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// using the status field and the following 3 bytes (cool, beauty, and cute).
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#ifdef BUGFIX
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status = ROAMER->status;
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SetMonData(mon, MON_DATA_STATUS, &status);
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#else
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SetMonData(mon, MON_DATA_STATUS, &ROAMER->status);
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#endif
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SetMonData(mon, MON_DATA_HP, &ROAMER->hp);
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SetMonData(mon, MON_DATA_COOL, &ROAMER->cool);
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SetMonData(mon, MON_DATA_BEAUTY, &ROAMER->beauty);
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SetMonData(mon, MON_DATA_CUTE, &ROAMER->cute);
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SetMonData(mon, MON_DATA_SMART, &ROAMER->smart);
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SetMonData(mon, MON_DATA_TOUGH, &ROAMER->tough);
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}
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bool8 TryStartRoamerEncounter(void)
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{
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if (IsRoamerAt(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum) == TRUE && (Random() % 4) == 0)
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{
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CreateRoamerMonInstance();
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return TRUE;
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}
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else
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{
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return FALSE;
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}
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}
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void UpdateRoamerHPStatus(struct Pokemon *mon)
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{
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ROAMER->hp = GetMonData(mon, MON_DATA_HP);
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ROAMER->status = GetMonData(mon, MON_DATA_STATUS);
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RoamerMoveToOtherLocationSet();
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}
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void SetRoamerInactive(void)
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{
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ROAMER->active = FALSE;
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}
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void GetRoamerLocation(u8 *mapGroup, u8 *mapNum)
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{
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*mapGroup = sRoamerLocation[MAP_GRP];
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*mapNum = sRoamerLocation[MAP_NUM];
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}
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u16 GetRoamerLocationMapSectionId(void)
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{
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if (!ROAMER->active)
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return MAPSEC_NONE;
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return Overworld_GetMapHeaderByGroupAndId(sRoamerLocation[MAP_GRP], sRoamerLocation[MAP_NUM])->regionMapSectionId;
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}
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