Random Item Generation on tilemap

[Sennin]

Godot Version

4.2.2

Question

I have a basic tilemap that i want to spawn some collectables on another layer on top of them
i want to check the atlas cords to spawn these collectables on top
for example
if Tilemap.AtlasCord == (6,2):
Scene.Instantiate()

How can i check for the all the atlas cords on the used tiles of the tilemap and instantiate my collectable scenes on random locations of the same atlas cord

[zdrmlpzdrmlp]

instead of using atlas coordinates i use custom data of “wall” because enemy or any collectible wont spawn in a wall. if you wished to spawn a collectible only on specific tile, then in your specific tile, add a custom data layer with certain value then incorporate the masking with it:

here is a script i try to spawn enemy in a TileMap:

func spawn_enemies():
	var all_tilemap_cells = tilemap_node.get_used_cells(0)
	var all_tilemap_cells_masked = [] 
	for i in all_tilemap_cells:
		var tile_world_position = to_global(tilemap_node.map_to_local(i))
		var tile_data=tilemap_node.get_cell_tile_data(1,i)
		player=get_tree().get_nodes_in_group("player")[0]
		if tile_data and tile_data.get_custom_data_by_layer_id(0)=="wall":
			continue
		if player.global_position.distance_to(tile_world_position) > player_mask_radius:
			all_tilemap_cells_masked.append(i)

	if not all_tilemap_cells_masked.is_empty():
		all_tilemap_cells_masked.shuffle()
		for i in enemy_count:
			var tile_world_position = to_global(tilemap_node.map_to_local(all_tilemap_cells_masked[i]))
			var new_enemy = enemy_scene.instantiate()
			add_child(new_enemy)
			new_enemy.global_position = tile_world_position

this should get you some insights how to spawn your collectable

@zdrmlpzdrmlp

		if tile_data and tile_data.get_custom_data_by_layer_id(0)=="wall":
			continue
		if player.global_position.distance_to(tile_world_position) > player_mask_radius:
			all_tilemap_cells_masked.append(i)

here’s what i mean incorporate the masking with it:
replace it to:

		if tile_data and tile_data.get_custom_data_by_layer_id(0)!="wall" and  tile_data.get_custom_data_by_layer_id(0)=="collectible_tile":
			all_tilemap_cells_masked.append(i)
			

[Sennin]

thank you so very much
you’ve saved me hours of searching and testing