#ifndef DRAWING_H
#define DRAWING_H

#include "aliases/aliases.h"
#include <SDL_pixels.h>
#include <SDL_render.h>
#include <stdbool.h>

#define DEFAULT_ARROWS_CAPACITY 1024

#define init_arrows_default(arrows)                                            \
  init_arrows_arr(arrows, DEFAULT_ARROWS_CAPACITY)
#define init_arrows_with_capacity(arrows, capacity)                            \
  init_arrows_arr(arrows, capacity)

typedef struct colour colour_t;
struct colour {
  union {
    u32 abgr;
    SDL_Color colour;
  };
};

typedef struct point point_t;
struct point {
  i32 x;
  i32 y;
};

typedef struct vec2 vec2_t;
struct vec2 {
  i32 x;
  i32 y;
};

typedef struct arrow arrow_t;
struct arrow {
  point_t origin;
  vec2_t direction;
};

typedef struct arrows arrows_t;
struct arrows {
  arrow_t *lines;
  u64 count;
  u64 capacity;
};

bool init_arrows_arr(arrows_t *lines, u64 capacity);
void add_arrow(arrows_t *lines, arrow_t ln);
void draw_arrows(SDL_Renderer *renderer, const arrows_t *arrows,
                 colour_t colour);
void draw_arrow(SDL_Renderer *renderer, const arrow_t *arrow, colour_t colour);

#endif // !DRAWING_H