balatro-gba/include/game.h

#ifndef GAME_H
#define GAME_H

#include "game/common_ui.h"
#include "game_variables.h"

#include <tonc.h>

#define MAX_HAND_SIZE        16
#define MAX_DECK_SIZE        52
#define MAX_JOKERS_HELD_SIZE 5 // This doesn't account for negatives right now.
#define MAX_SHOP_JOKERS      2 // TODO: Make this dynamic and allow for other items besides jokers
#define MAX_SELECTION_SIZE   5
#define FRAMES(x)            (((x) + game_speed - 1) / game_speed)

// TODO: Can make these dynamic to support interest-related jokers and vouchers
#define MAX_INTEREST   5
#define INTEREST_PER_5 1

// Input bindings
#define SELECT_CARD    KEY_A
#define DESELECT_CARDS KEY_B
#define PEEK_DECK      KEY_L // Not implemented
#define SORT_HAND      KEY_R
#define PAUSE_GAME     KEY_START // Not implemented
#define SELL_KEY       KEY_L

// Matching the position of the on-screen buttons
#define PLAY_HAND_KEY KEY_L
// Same value as SELL_KEY - activated on the joker row, while this is activated on the hand row

#define DISCARD_HAND_KEY KEY_R

struct List;
typedef struct List List;

// Utility functions for other files
typedef struct CardObject CardObject;
typedef struct Card Card;
typedef struct JokerObject JokerObject;

// Enum value names in ../include/def_state_info_table.h
enum GameState
{
#define DEF_STATE_INFO(stateEnum, on_init, on_update, on_exit) stateEnum,
#include "def_state_info_table.h"
#undef DEF_STATE_INFO
    GAME_STATE_MAX,
    GAME_STATE_UNDEFINED
};

enum HandState
{
    HAND_DRAW,
    HAND_SELECT,
    // This is actually a misnomer because it's used for the deck
    // but it mechanically makes sense to be a state of the hand
    HAND_SHUFFLING,
    HAND_DISCARD,
    HAND_PLAY,
    HAND_PLAYING
};

enum PlayState
{
    PLAY_STARTING,
    PLAY_BEFORE_SCORING,
    PLAY_SCORING_CARDS,
    PLAY_SCORING_CARD_JOKERS,
    PLAY_SCORING_HELD_CARDS,
    PLAY_SCORING_INDEPENDENT_JOKERS,
    PLAY_SCORING_HAND_SCORED_END,
    PLAY_ENDING,
    PLAY_ENDED
};

// Hand types
enum HandType
{
    NONE,
    HIGH_CARD,
    PAIR,
    TWO_PAIR,
    THREE_OF_A_KIND,
    STRAIGHT,
    FLUSH,
    FULL_HOUSE,
    FOUR_OF_A_KIND,
    STRAIGHT_FLUSH,
    ROYAL_FLUSH,
    FIVE_OF_A_KIND,
    FLUSH_HOUSE,
    FLUSH_FIVE
};

// clang-format off
// Store all contained hands to optimize "whole hand condition" Jokers
typedef struct ContainedHandTypes
{
    union
    {
        struct
        {
            u16 HIGH_CARD : 1;
            u16 PAIR : 1;
            u16 TWO_PAIR : 1;
            u16 THREE_OF_A_KIND : 1;
            u16 STRAIGHT : 1;
            u16 FLUSH : 1;
            u16 FULL_HOUSE : 1;
            u16 FOUR_OF_A_KIND : 1;
            u16 STRAIGHT_FLUSH : 1;
            u16 ROYAL_FLUSH : 1;
            u16 FIVE_OF_A_KIND : 1;
            u16 FLUSH_HOUSE : 1;
            u16 FLUSH_FIVE : 1;
            u16 : 3;
        };
        u16 value;
    };
} ContainedHandTypes;
// clang-format on

typedef void (*GameStateCallback)(GameVariables* gs);

typedef struct
{
    int substate;
    GameStateCallback on_init;
    GameStateCallback on_update;
    GameStateCallback on_exit;
} StateInfo;

// Game functions
void game_init();
void game_update();
void game_change_state(enum GameState new_game_state);

CardObject** get_hand_array(void);
int get_hand_top(void);
int hand_get_size(void);
CardObject** get_played_array(void);
int get_played_top(void);
int get_scored_card_index(void);
bool is_joker_owned(int joker_id);
bool card_is_face(Card* card);
List* get_jokers_list(void);
List* get_expired_jokers_list(void);

ContainedHandTypes* get_contained_hands(void);
enum HandType* get_hand_type(void);

int get_deck_top(void);
int get_num_discards_remaining(void);
int get_num_hands_remaining(void);

u32 get_chips(void);
void set_chips(u32 new_chips);
void display_chips();
u32 get_mult(void);
void set_mult(u32 new_mult);
void display_mult();
int get_money(void);
void set_money(int new_money);
void display_money();
void set_retrigger(bool new_retrigger);

int get_game_speed(void);
void set_game_speed(int new_game_speed);

// joker specific functions
bool is_shortcut_joker_active(void);
int get_straight_and_flush_size(void);

// Temporary change for Refactor. Currently this compatibility binder is to allow
// simultaneous integration of the new system in `common_ui` with the the existing
// old system incrementally and without losing functionality.
void change_background_legacy(enum BackgroundId id);

#endif // GAME_H