How can I make a resource emit changed signal by default whenever its properties are modified?

Question

I find myself in an awkward situation when I create a custom resource similar to Material in nature and end up doing this:

extends Resource
class_name CustomMaterial

export(bool) var tear_down_enabled setget set_tear_down_enabled
export(float) var tear_down_threshold setget set_tear_down_threshold
export(float) var tear_down_delay setget set_tear_down_delay
export(bool) var destroy_on_tear_down setget set_destroy_on_tear_down
export(float) var destroy_threshold setget set_destroy_threshold
export(float) var destroy_delay setget set_destroy_delay


func set_tear_down_enabled(p_tear_down_enabled):
    tear_down_enabled = p_tear_down_enabled
    emit_signal("changed")

func set_tear_down_threshold(p_tear_down_threshold):
    tear_down_threshold = p_tear_down_threshold
    emit_signal("changed")

func set_tear_down_delay(p_tear_down_delay):
    tear_down_delay = p_tear_down_delay
    emit_signal("changed")

func set_destroy_on_tear_down(p_destroy_on_tear_down):
    destroy_on_tear_down = p_destroy_on_tear_down
    emit_signal("changed")

func set_destroy_threshold(p_destroy_threshold):
    destroy_threshold = p_destroy_threshold
    emit_signal("changed")

func set_destroy_delay(p_destroy_delay):
    destroy_delay = p_destroy_delay
    emit_signal("changed")

I connect the changed signal to whatever node might be interested in this custom material. What I'd like to do is to avoid writing these setter methods per property over and over, but have the resource emit changed signal by default. I've even created a snippet to speed up writing stuff like that. But I'm almost sure there must be a better way, any suggestions?

Answer 1

This seems to be a bug.