# Cache of the subtextures of tiles
	var subtextures: Array[Texture] is lazy do
		var subtextures = new Array[Texture]
		for j in [0..nb_rows[ do
			for i in [0..nb_cols[ do
				subtextures.add texture.subtexture(
					i.to_f*width.to_f, j.to_f*height.to_f, width.to_f, height.to_f)
			end
		end
		return subtextures
	end