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Description

"You have created a cool particle effect but you wanted to use it for multiple nodes? So you try to copy paste the child node you have created for your scene to another enemy or hero or bullet? You figured out you simply can't copy paste a node?\r\n\r\nA global particle system is the answer!\r\n\r\nFirst we set up a simple particle as a scene for itself.\r\nIn this tutorial I'm adding a short cloud puff particle for the hero's double jump.\r\n\r\n\r\nWe then add **the script from below** as global\r\n\r\n\r\nNow we can call the particle we want to simply by calling them from the script\r\n```\r\nPARTICLESYSTEM.emit(self, \"doublejump\", position)\r\n```\r\n\r\nEt voil\u00e1 you're emitting the particles\r\n"

Main code

extends Node2D

const OS_PUFF = preload("res://scenes/particles/os_puff.tscn") #reference to the particle scene

func emit(caller: Node, particle: String, pos: Vector2) -> void:
	match(particle):
		"doublejump":
			_doublejump(caller, pos)
		_:
			printerr("no such particle found: ", particle)

func _doublejump(c: Node, p: Vector2) -> void:
		var right_particle = OS_PUFF.instantiate()
		var left_particle = OS_PUFF.instantiate()
		left_particle.rotation_degrees = 180
		right_particle.position = p
		left_particle.position = p
		c.add_child(right_particle)
		c.add_child(left_particle)
		right_particle.emitting = true
		left_particle.emitting = true
		 #if you use the lifetime for timeout you can be sure it is queued free when it's done
		await get_tree().create_timer(left_particle.lifetime).timeout
		right_particle.queue_free()
		left_particle.queue_free()

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