Changing particle emission rate via C# script

Question

Unity deprecated a lot of methods and properties in setting up a decent effects for my game. I need to change the rate of particle emission. How am I suppose to do t$$anonymous$$s?

emission.emissionRate is deprecated stop suggesting it.

Answer 1

Answer by Helical · Oct 23, 2016 at 02:18 PM

         //does NOT work
         //system.emission.rate = Random.Range (emmisionRateMin, emmisionRateMax);
 
         //works
         var em = system.emission;
         em.rate = Random.Range(emmisionRateMin, emmisionRateMax);

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amzin7000 · Nov 12, 2016 at 08:52 PM 0

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Thanks, worked like a charm!

Antypodish · Jun 29, 2017 at 02:27 PM 0

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'rate' is obsolete in 2017 beta

Mehrdad995 Antypodish · Oct 10, 2017 at 08:06 PM 1

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use rateOverTime or rateOverDistance instead.

Answer 2

Answer by Halfbiscuit · Feb 06, 2016 at 11:28 AM

It seems to be rather more complex to do t$$anonymous$$s now but you can access the ParticleSystems emission variable then set the emission.rate.mode to ParticleSystemCurveMode.Constant.

After that setting either the emission.rate.constantMax or emission.rate.constantMin should allow you to set the emission rate.

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dmurtha · Oct 13, 2016 at 12:59 AM 0

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Could you perhaps go into more detail as to how to do this? This is my code: private Vector3 lastPosition; private bool mouseWasDown = false; private ParticleSystem particleObjects;

     private float min = 37.0f;
     private float max = 45.0f;
     private float dif = 8;
     private float mag = 37.0f;
     private float val;
     private float floor = 120.0f;
     private float ceiling = 1000.0f;
     private float room = 880.0f;
     void Start ()
     {
         dif = max - min;
         room = ceiling - floor;
         particleObjects = GetComponent<ParticleSystem> ();
         var em = particleObjects.emission.rate;
         em.mode = ParticleSystemCurveMode.Constant;
     }
     void Update () 
     {
         if (Input.GetMouseButton (0)) {
             if (mouseWasDown == false) {
                 lastPosition = Input.mousePosition;
                 mouseWasDown = true;
                 return;
             }
             Vector3 mouseDelta = Input.mousePosition - lastPosition;
             mag = (Mathf.Clamp (mouseDelta.magnitude, floor, ceiling) - floor) / room;
             val = mag * dif + min;
             var em = particleObjects.emission.rate;
             em.constantMax = val;
             em.constantMin = val;
         } else {
             mouseWasDown = false;
         }
     }

Where am I going wrong?

Mehrdad995 · Oct 10, 2017 at 08:05 PM 0

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or just keep it as curve instead of constant and create a curve for yourself (ParticleSystem.MinMaxCurve), then change the rate from min up to max by evaluate.

Changing particle emission rate via C# script

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