#include <gb/gb.h>
#include <gb/drawing.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "../res/tiles.h"
#include "../res/map.h"
#include"../res/sprites.h"
#include"../res/sprite_metadata.h"
#include "./flags.h"
#include "./constants.h"
#include "./sprite.h"
#include "./vec.h"

#define NO_SCREEN_SPRITES 6

void init_gfx()
{
	// Load Background tiles and then map
	set_bkg_data(0, 23, tiles);
	set_bkg_tiles(0, 0, map.width, map.height, map.data);
	set_sprite_data(0, 26, sprites);

	// Turn the background map on to make it visible
	SHOW_BKG;
	SHOW_SPRITES;
}

void main(void)
{
	init_gfx();

	unsigned int i, jp, fc = 0;
	struct Sprites screen_sprites[NO_SCREEN_SPRITES];


	memcpy(&(screen_sprites[0]), &(sprites_info[2]), sizeof(Sprite));
	for (i = 1; i < NO_SCREEN_SPRITES; i++) memcpy(&(screen_sprites[i]), &(sprites_info[0]), sizeof(Sprite));
	screen_sprites[0].has_joypad = 1;

	for (i = 0; i < NO_SCREEN_SPRITES; i++) {
		screen_sprites[i].bitmap_index_prev = -1;
		screen_sprites[i].gb_sprite_index = i;
		screen_sprites[i].pos.x = 72+(8*i);
		screen_sprites[i].pos.y = 36+(8*i);
		sprite_draw_to_screen(&(screen_sprites[i]));
	}


	// Loop forever
	while(1) {
		fc++;
		jp = joypad();
		for (i = 0; i < NO_SCREEN_SPRITES; i++) {
			sprite_iter_frame(&(screen_sprites[i]), &map, screen_sprites[i].has_joypad ? jp : 0, &fc);
		}

		// Done processing, yield CPU and wait for start of next frame
		wait_vbl_done();
	}
}