var mapSize = 120 # размер карты 120х120
    var tileSize = 64 # размер одной ячейки.
    var pathfinder := AStarGrid2D.new()
    pathfinder.diagonal_mode = AStarGrid2D.DIAGONAL_MODE_ONLY_IF_NO_OBSTACLES
    pathfinder.region = Rect2i(0, 0, mapSize, mapSize)
    pathfinder.cell_size = Vector2(tileSize, tileSize)
    pathfinder.update()