node_util.gd

extends Node

static func find_nodes_in_group(p_group: String, p_node: Node) -> Array:
	var valid_nodes: Array = Array()

	for group in p_node.get_groups():
		if p_group == group:
			valid_nodes.push_back(p_node)

	for child in p_node.get_children():
		var valid_child_nodes: Array = find_nodes_in_group(p_group, child)
		for valid_child_node in valid_child_nodes:
			valid_nodes.push_back(valid_child_node)

	return valid_nodes

static func set_relative_global_transform(p_root: Spatial, p_spatial: Spatial, p_gt: Transform) -> void:
	if p_spatial.get_parent() == p_root:
		p_spatial.set_transform(p_gt)
	else:
		p_spatial.set_transform(get_relative_global_transform(\
		p_root, p_spatial.get_parent()).affine_inverse() * p_gt)
		
static func get_relative_global_transform(p_root: Spatial, p_spatial: Spatial) -> Transform:
	var parent: Spatial = p_spatial.get_parent()
	if parent and parent != p_root:
		return get_relative_global_transform(p_root, parent) * p_spatial.transform
	else:
		return p_spatial.transform