Get the surrounding tiles from a given tile (in grid-based coordinates)

get_surrounding_tiles.gd

func get_surrounding_tiles(current_tile):
	var surrounding_tiles = []
	var target_tile

	for y in 3:
		for x in 3:
			target_tile = current_tile + Vector2(x - 1, y - 1)

			if current_tile == target_tile:
				continue

			surrounding_tiles.append(target_tile)

	return surrounding_tiles