@tool extends EditorPlugin func _enter_tree(): # When this plugin node enters tree, add the custom type add_custom_type("Heart", "Node2D", preload("res://addons/custom_node/heart.gd"), preload("res://addons/custom_node/heart_icon.png")) func _exit_tree(): # When the plugin node exits the tree, remove the custom type remove_custom_type("Heart")