libakgl/include/akgl/game.h

#ifndef _AKGL_GAME_H_
#define _AKGL_GAME_H_

#include <stdint.h>
#include "types.h"
#include <SDL3_mixer/SDL_mixer.h>
#include "tilemap.h"

#define AKGL_VERSION                     "0.1.0"

#define AKGL_GAME_AUDIO_TRACK_BGM        1
#define AKGL_GAME_AUDIO_MAX_TRACKS       64

#define AKGL_TIME_ONESEC_NS              1000000000
#define AKGL_TIME_ONESEC_MS              1000000

/* ==================== GAME STATE VARIABLES =================== */

typedef struct {
    float32_t w;
    float32_t h;
    SDL_Texture *texture;
} akgl_Frame;

typedef struct {
    int32_t flags;
} akgl_GameState;

typedef struct {
    char libversion[32];
    char version[32];
    char name[256];
    char uri[256];
    akgl_GameState state;
    int16_t fps;
    SDL_Time gameStartTime;
    SDL_Time lastIterTime;
    SDL_Time lastFPSTime;
    int16_t framesSinceUpdate;
    void (*lowfpsfunc)(void);
} akgl_Game;

extern SDL_Window *window;
extern SDL_Renderer *renderer;
extern akgl_Tilemap gamemap;
extern MIX_Audio *bgm;
extern MIX_Mixer *akgl_mixer;
extern MIX_Track *akgl_tracks[AKGL_GAME_AUDIO_MAX_TRACKS];
extern SDL_FRect camera;
extern akgl_Game game;

#define AKGL_BITMASK_HAS(x, y) (x & y) == y
#define AKGL_BITMASK_ADD(x, y) x |= y
#define AKGL_BITMASK_DEL(x, y) x &= ~(y)
#define AKGL_BITMASK_CLEAR(x)  x = 0;

akerr_ErrorContext AKERR_NOIGNORE *akgl_game_init();
akerr_ErrorContext AKERR_NOIGNORE *akgl_game_init_screen();
void akgl_game_updateFPS();
akerr_ErrorContext AKERR_NOIGNORE *akgl_game_save(char *fpath);
akerr_ErrorContext AKERR_NOIGNORE *akgl_game_load(char *fpath);
void akgl_game_lowfps(void);

#endif //_AKGL_GAME_H_