extends Node

# -------------------------------------------------------------------------------------------------

# Assigns all meshes the actor consists of to the specified layer(s)
# @param  layerMask  Bit mask of the layers the actor's meshes should be visible on
# @remarks
#   This can be useful for segmented scenes, where 'rooms' exist on separate layers
#   to reduce the number of simultaneously active lights.
func SetLayerMask(var layerMask):
	#print("Layer mask of %s changed to %d" % [ self.name, layerMask ])
	var meshes = findMeshes()
	for mesh in meshes:
		mesh.set_layer_mask(layerMask)

# -------------------------------------------------------------------------------------------------

# Finds all cameras that the camera controller node is carrying
# @returns A list of all cameras carried by the camera controller
func findMeshes():
	var meshes = []
	recursivelyCollectMeshes(self, meshes)
	return meshes

# -------------------------------------------------------------------------------------------------

# Recursively searches a node for meshes and appends them to a list
# @param  node      Node that will be searched for meshes
# @param  meshList  List to which all found meshes will be appended
func recursivelyCollectMeshes(var node, var meshList):
	for childNode in node.get_children():
		if childNode is MeshInstance:
			meshList.append(childNode)
		else:
			recursivelyCollectMeshes(childNode, meshList)