module tilemap;

import tango.math.Math;

import dsfml.window.all;
import dsfml.system.all;
import dsfml.graphics.all;

import tileset;

typedef Sprite[] SpriteArray;

class Tilemap {
    public int[int][int][int] map; // Layer: x: y: Tile-ID
    private Tileset tileset;
    public int width, height, tilewidth, tileheight;

    this(Tileset tileset, int width, int height, int tilewidth, int tileheight) {
	this.tileset = tileset;
	this.width = width;
	this.height = height;
	this.tilewidth = tilewidth;
	this.tileheight = tileheight;
    }

    void real_to_tile(int real_x, int real_y, inout int tile_x, inout int tile_y) {
	tile_x = rndint(floor(real_x / this.tilewidth));
	tile_y = rndint(floor(real_y / this.tileheight));
    }

    void tile_to_real(int tile_x, int tile_y, inout int real_x, inout int real_y) {
	real_x = tile_x*this.tilewidth;
	real_y = tile_y*this.tileheight;
    }

    SpriteArray get_sprites() {
	SpriteArray sprites;
	Sprite sprite;
	int real_x, real_y;
	foreach(int[int][int] layer; map) {
	    for(int x=0; x<width; x++) {
		if(x in layer) {
		    for(int y=0; y<height; y++) {
			if(y in layer[x]) {
			    sprite = new Sprite;
			    tile_to_real(x, y, real_x, real_y);
			    sprite.setX(real_x);
			    sprite.setY(real_y);
			    sprite.setImage(this.tileset.tiles[layer[x][y]]);
			    sprites ~= sprite;
			}
		    }
		}
	    }
	}
	return sprites;	
    }
}