extends Node3D

enum TileType {
	Empty,
	Plain,
	Forest
}

var tile_exemplar = preload("res://scenes/models/tile.tscn");

func _ready():
	var start_tile = tile_exemplar.instantiate()
	start_tile.add_to_group("Persistent")
	start_tile.tile_type = 1
	
	add_child(start_tile);
	pass

func mark_empty_tiles():
	var tiles = get_children()
	var available = []
	for tile in tiles:
		tile.update_tile()
		if tile.tile_type == TileType.Empty: continue
		var free_dirs = tile.get_empty_dirs_around()
		for dir in free_dirs:
			var pos: Vector3 = tile.position
			match dir:
				"north":
					pos.x += 10
				"south":
					pos.x -= 10
				"west":
					pos.z -= 10
				"east":
					pos.z += 10
			if (available.has(pos)): continue
			var empty_tile = tile_exemplar.instantiate()
			empty_tile.tile_type = TileType.Empty
			empty_tile.add_to_group("Persistent")
			add_child(empty_tile)
			
			empty_tile.position = pos;
			available.push_back(pos)
			empty_tile.update_tile()