How to use MOUSE _ MOTION ( if mouse cursor is moving) for starting and stopping emitting Particles2D?

Question

Hello,
I need help with this,everything is in the question....on the basis I need ON and OFF emit particles of whether the mouse cursor is moving.
cursor is moving = emitting on
cursor is not moving = emitting = off

Scene:

Node2D - script
[
Particle2D
Thanks for help

Answer 1

extends Particles2D

func _ready():
    set_process_input(true)

func _input(event):
    set_emitting( event.type == InputEvent.MOUSE_MOTION )

Maybe not the most efficient way, but probably the most direct way.

Comments

Thanks, but this isn't working for me,I don't know why?
maybe detecting mouse cursor speed?
mousespeed = 0
mousespeed = 1

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_input won't do anything without input so you can't detect a no-input.

Add a variable to control the emission and set to true inside _input the same way but set it to false at the end of each process (after using it for emission).

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@eons Thanks but only with a script solution I still not get it.... where put variables?...you can show on the example?....i'm still a novice in GD script.

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It should be a control/flag variable on the script.

Just think (and write if possible) what you want to do:

-If moving, it must emit particles
-In any other scenario must stop emitting

It means that you need a variable to register that "moving" event but be always off when not moving.

var moving = false #the variable

func _input(event):
    if  event.type == InputEvent.MOUSE_MOTION: #is moving
         moving = true #should emit

func _process(delta):
    set_emitting(moving) #if moving emit, if not, don't
    moving = false #always false 
    #covers all the non moving situations, input will turn to true if moving

(you must turn on process and input, of course)

That is a simple way to turn on/off flags, useful in a many scenarios where no-events change behaviors.

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Thanks guys for your help..that's very helpful.

.... in the input (event) function must be at the end of the code ... set _ emitting (true) for emitting particles
....We have two options 1) use animation player + script
2) only script...... this option probably is better for framerate?

This works great:

    extends Particles2D

var moving = false #the variable

func _ready():
    set_process_input(true)
    set_process(true)


func _input(event):
    if  event.type == InputEvent.MOUSE_MOTION:
        moving = true
        set_emitting(true)

func _process(delta):
    var ms = get_global_mouse_pos()
    set_global_pos(Vector2(ms))
    set_emitting(moving)
    moving = false 

Answer 2

I solved....(animation way)..Godot is great,thanks to AnimationPlayer you can animate custom mouse cursor particles.

    extends Node2D

var beruska 
var b_anim


func _ready():
    set_process(true)
    set_process_input(true)
    beruska = get_node("beruska")
    b_anim = get_node("emitting")

func _process(delta):
    var ms = get_global_mouse_pos()
    beruska.set_global_pos(Vector2(ms))

func _input(event):
    if event.type == InputEvent.MOUSE_MOTION:
        b_anim.play("emitting")