ui_cats.h

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#pragma once
 
#include <stdbool.h>
#include <stdint.h>
 
#include "gfx.h"
#include "gfx_sprite.h"
#include "ui_cats_art.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define UI_CAT_IN(spot) (1u << (unsigned)(spot))

#define UI_CAT_GAP 4

#define UI_CAT_RANDOM (-1)
#define UI_CAT_NONE   (-2)

typedef struct {
    const char  *name;   
    gfx_sprite_t art;    
    uint32_t     spots;  
} ui_cat_pose_t;

extern const ui_cat_pose_t ui_cat_poses[UI_CAT_POSES];

typedef enum {
    UI_CAT_FROM_LEFT = 0, 
    UI_CAT_FROM_RIGHT,    
} ui_cat_side_t;

typedef struct {
    ui_cat_spot_id_t id;   
    int16_t          x;    
    int16_t          y;    
    ui_cat_side_t    side; 
} ui_cat_spot_t;

typedef struct {
    int8_t pose; 
    int8_t spot; 
} ui_cat_pick_t;

#define UI_CAT_PICK_NONE ((ui_cat_pick_t){ UI_CAT_NONE, UI_CAT_NONE })

typedef bool (*ui_cat_clear_fn)(gfx_rect_t r);

gfx_rect_t ui_cat_rect(int pose, const ui_cat_spot_t *spot);

ui_cat_pick_t ui_cats_pick(const ui_cat_spot_t *spots, int n,
                           ui_cat_clear_fn clear, uint32_t roll);

gfx_rect_t ui_cats_draw(gfx_canvas_t *c, ui_cat_pick_t pick,
                        const ui_cat_spot_t *spots, int n);

typedef uint32_t (*ui_cats_random_fn)(void);

void ui_cats_set_random(ui_cats_random_fn fn);

void ui_cats_seed(uint32_t seed);

uint32_t ui_cats_roll(void);

void ui_cats_force(int pose);

int ui_cats_forced(void);
 
#ifdef __cplusplus
}
#endif