Can you turn off the autostart func _draw():

dzosek

I would like fun _draw(): It only starts when it uses the left mouse button. Is that possible?Because this function starts automatically when a scene open.

TwistedTwigleg

You could add a boolean that ignores the first _draw call:

var first_draw_call_skipped = false
func _draw():
	if first_draw_call_skipped == false:
		first_draw_call_skipped = true
		return
	# Do other stuff here!

I'm not sure if there is a built-in way to do this though.