feat: hexagonal ant

langtons-ant/tile_map_layer.gd

@@ -1,6 +1,20 @@
 extends TileMapLayer
 
 var tiles: Dictionary = {}
+var idx: int = 0
+var dirs: Array[int] = [
+	TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE,
+	TileSet.CELL_NEIGHBOR_RIGHT_SIDE,
+	TileSet.CELL_NEIGHBOR_BOTTOM_RIGHT_SIDE,
+	TileSet.CELL_NEIGHBOR_BOTTOM_LEFT_SIDE,
+	TileSet.CELL_NEIGHBOR_LEFT_SIDE,
+	TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE,
+]
+
+func render_next() -> void:
+	print("rendering {i}")
+	set_cell(get_neighbor_cell(Vector2i(0, 0), dirs[idx]), 0, Vector2i(0, 1))
+	idx = (idx + 1) % 6
 
 func get_tile_colour(pos: Vector2i) -> int:
 	return tiles.get_or_add(pos, 0)