extends Node2D
class_name Piece


@export var piece_name: String = ""

var cells: Array[Cell] = []
var block_size: int = 0

var cell_grid: Array[Vector2i] = []

func _ready() -> void:
	for c in self.get_children():
		if c is Cell:
			cells.append(c)
	
	# all cells must have same block size
	for c in cells:
		if block_size == 0:
			block_size = c.block_size
		else:
			assert(block_size == c.block_size, "All cells must have same block size")
	
	# build cell grid coordinates
	for c in cells:
		var pos_x: int = floori(c.position.x / block_size)
		var pos_y: int = floori(c.position.y / block_size)
		cell_grid.append(Vector2i(pos_x, pos_y))


func _to_string() -> String:
	return str(cell_grid)