Topic was automatically imported from the old Question2Answer platform.
Asked By
mmarramarco
Old Version
Published before Godot 3 was released.
Really simple here, I am just trying to learn godot.
I am learning the particle, and wish to create them while pressing a key (easy) but can’t manage to free them while releasing the same key.
here is the code
var is_flamethrowing = false
onready var fire_particle = preload("res://fire_particle.tscn")
func _fixed_process(delta):
if(Input.is_action_pressed("space_bar")):
fire = fire_particle.instance()
add_child(fire)
is_flamethrowing = true
if(/* TRYING TO RELEASE HERE */):
remove_child(fire)
fire.queue_free()
is_flamethrowing = false
I already tried other thing, such as Input.action_released().
I know my freeing code work, i tested with an other input. I am just surprised that Godot doesn’t implement an “is_action_released()” method.
Your code creates an instance in every frame if the space_bar is pressed.
IMO it would be better to have only one instance, and you can call it’s set_emitting function with true/false parameter when necessary (I assume that the root node of the fire_particle scene is a Particles/Particles2D).
If you really need multiple instances, then put them in a list, and you can free them later.
About your question: try to use the _input function, and it’s event parameter!
Something like this:
(...)
onready var fire_particle = preload("res://fire_particle.tscn")
onready var fire = fire_particle.instance()
var is_flamethrowing = false
func _ready():
fire.set_emitting(false)
add_child(fire)
set_fixed_process(true)
set_process_input(true)
func _input(event):
if(event.is_action_pressed("space_bar")):
is_flamethrowing = true
elif(event.is_action_released("space_bar")):
is_flamethrowing = false
func _fixed_process(delta):
if(is_flamethrowing):
fire.set_emitting(true)
else:
fire.set_emitting(false)
(...)
I figured out alone for the func input(event), thanks anyway ^^ I just don’t get why I have to do that with another function while is action released can work everywhere. Thanks also for the particle part, I ll try that right away, I am still learning it.
