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Question by lexen1 · Jan 07, 2016 at 02:40 PM · particlesystememissionrateread-only

Cannot Change emission.rate

I have been using emissionRate as a variable without problem, but I recently got a notification in unity that it is obsolete and I should use emission.rate. When I try that, it tells me that it is read only and I should consider storing the value in a temporary variable. I have done this before with the alpha value of colors, but I don't know how to do this with the rate. Does anyone know how to modify emission.rate?

Thanks.

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Answer by mikelortega · Jul 19, 2016 at 10:35 AM

You can change the rate this way:

 var rate = myParticleSystem.emission.rate;
 rate.mode = ParticleSystemCurveMode.Constant;
 rate.constantMin = xxx;
 rate.constantMax = xxx;
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avatar image Creeper_Math · Dec 25, 2016 at 05:29 PM 0
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What would it be in C#? I'm trying a similar thing

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Answer by NetherChef · May 26, 2018 at 07:14 AM

What you want to change is ParticleSystem.emission.rateOverTime.constant. To change this, you need:

 ParticleSystem yourParticleSys;
 ParticleSystem.EmissionModule yourEmissionModule;
 float newEmissionrate = 100;

Make EmissionModule inherit from ParticleSystem:

 yourEmissionModule = particleSys.emission;

ParticleSystem.emission.rateOverTime is not a float/int but a ParticleSystem.MinMaxCurve. So, to change it do:

 ParticleSystem.MinMaxCurve tempCurve = yourEmissionModule.rateOvertTime;
 tempCurve.constant = newEmissionRate;
 yourEmissionModule.rateOverTime = tempCurve;
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Answer by richardzzzarnold · Nov 08, 2019 at 09:01 AM

If you want to have an animated emission rate would you have this whole bit in an Update function?

  ParticleSystem.MinMaxCurve tempCurve = yourEmissionModule.rateOvertTime;
  tempCurve.constant = newEmissionRate;
  yourEmissionModule.rateOverTime = tempCurve;
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