#ifndef render_h
#define render_h

#include "config.h"
#include "rect.h"
#include "memory.h"

typedef struct {
	unsigned char r, g, b, a;
} Colour;

Colour make_colour(unsigned rgb, unsigned char a);
Colour make_black();
Colour make_white();

typedef struct Bitmap {
	Colour* pixels;
	int w, h;
} Bitmap;

void init_bitmap(
	Bitmap* bitmap,
	Colour* pixels,
	int w,
	int h
);

#define max_glyphset 256

struct Font;
typedef struct Font Font;

int font_height(Font* f);

void get_font_rect(
	const Font* font,
	Rectangle* dst,
	char c
);

Font* new_font(
	Heap* h,
	const unsigned char* raw,
	int size
);
Rectangle text_rect(Font* font, const char* text);

void rfont_text(
	Font* font,
	int x,
	int y,
	const char* text
);
void rfont_text_col(
	Font* font,
	int x,
	int y,
	const char* text,
	Colour colour
);

void render_init(void);

void render_begin(void);
void render_clear(void);
void render_clear_col(Colour col);
void render_clip(const Rectangle* rect);
void render_reset_clip(void);

Colour blend(Colour dst, Colour src);
Colour blend_mod(Colour dst, Colour src, Colour mod);

Colour* get_render_pixels(void);

extern int sprite_camera_x;
extern int sprite_camera_y;

void render_bitmap(
	const Bitmap* bitmap,
	int x,
	int y,
	const Rectangle* rect
);

void render_bitmap_col(
	const Bitmap* bitmap,
	int x,
	int y,
	const Rectangle* rect,
	Colour colour
);

void render_rect(
	const Rectangle* rect,
	Colour colour
);

void render_mask(
	const unsigned char* pixels,
	int x,
	int y,
	int w,
	int h,
	const Rectangle* rect,
	Colour colour
);

void rcopy(
	Bitmap* dst,
	const Bitmap* src,
	int x,
	int y,
	const Rectangle* rect
);

void rcopy_col(
	Bitmap* dst,
	const Bitmap* src,
	int x,
	int y,
	const Rectangle* rect,
	Colour colour
);

void rcopy_ac(
	Bitmap* dst,
	const Bitmap* src,
	int x,
	int y,
	const Rectangle* rect,
	unsigned char t
);

void rcopy_rect(
	Bitmap* dst,
	const Rectangle* rect,
	Colour colour
);

#endif