const INDEX_FORMAT := globals.INDEX_FORMAT

static func ByteArray(size: int) -> PoolByteArray:
	var arr := PoolByteArray()
	arr.resize(size)
	return arr

static func _4bpp_to_tile(data: PoolByteArray) -> Image:
	var tdata := ByteArray(64)
	for i in range(32):
		tdata[i*2] = data[i] % 16
		tdata[i*2+1] = data[i] / 16
	var tile := Image.new()
	tile.create_from_data(8, 8, false, INDEX_FORMAT, tdata)
	return tile