What does this weird error mean: (time >= 0.0f) && (time </div> <div style=

Questions & Answers
1

I can’t figure out what’s causing it or how to fix it. Something with my particle effects and Time.timeScale, I think?

(time >= 0.0f) && (time <= 1.0f)
UnityEditor.DockArea:OnGUI()

Assert in file: ./Runtime/Math/Gradient.h at line 108
2

I have some helpful information. I do not get this error when I have the emitter going from the start. The only issue with this is I’m still not getting the ability to create ParticleSystem.Particle objects and place them where I want and see them. And further more, when I take all of the particles in the system, add a new one with hard coded values and touch none of the existing ones, and feed them all back to the ParticleSystem, it resets like I just asked it to Clear() and Play(). It’s almost like I somehow set their lifetimes back to 0.

Pretty annoying. This was working in the old system and as the link above has noted, they are including it in a future release (as of February they stated that and it’s not here yet as far as I can tell). I guess I’m going to have to pay $3k to batch my particles for new Unity 4 licenses for Pro and iOS if it’s even in there. In my opinion, if they have something working and it’s a fix of this nature, it should be in the point releases where that system was introduced.

Thanks for any clarity on this. I just can’t get it to work. Here’s my code.

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class sprinkleParticleTest : MonoBehaviour {

    public ParticleSystem pSys;

    //place transforms in here in order to spawn particles from different locations
    public List transList = new List();

    // Use this for initialization
    void Start () {
        //Every 3 seconds we'll try to spawn a new particle on top of what's in the system
        InvokeRepeating("EmitNewParticles", 0.0f, 3.0f);
    }

     void Awake()
    {
        pSys.enableEmission = true;
    }

    /// 
    /// Emits new particles to the order of transList.Count in addition to already live ones
    /// 
    void EmitNewParticles()
    {
        if( transList.Count == 0 ) {
            Debug.LogWarning("Put a Transform in this list... sucka!");
            return;
        }

        ParticleSystem.Particle[] pList = new ParticleSystem.Particle[pSys.particleCount];
        Debug.Log(pList.Length);

        ParticleSystem.Particle[] outputList = new ParticleSystem.Particle[pList.Length+transList.Count];

        int newParticlePlacedCount = 0;
        for( int i=0; i <= pList.Length; i++) {
            //create the one new particle
            if( i > pList.Length - transList.Count ) {
                ParticleSystem.Particle newParticle = CreateParticle(pList.Length - i);

                outputList *= newParticle;*

++newParticlePlacedCount;
Debug.Log("newParticlePlacedCount == " + newParticlePlacedCount);
}
//or just use the existing ones, touching none of their properties and putting them back in the order I got them
else
outputList = pList*;*
}

//Set ParticleSystem.Particles back into the ParticleSystem
pSys.SetParticles(outputList, outputList.Length);
}

///
/// Create a new ParticleSystem.Particle object with mostly arbitrary values. Position is pulled from a List of available Transforms
///
///
/// The new particle.
///
private ParticleSystem.Particle CreateParticle(int transformPicker)
{
ParticleSystem.Particle newParticle = new ParticleSystem.Particle();
newParticle.position = transList[transformPicker].position;

newParticle.velocity = new Vector3( Random.Range(-0.3f,0.3f), Random.Range(-0.3f,0.3f), Random.Range(-0.3f,-0.3f));

newParticle.lifetime = Mathf.Min(0, pSys.startLifetime);
newParticle.startLifetime = pSys.startLifetime;
newParticle.size = 1.0f;
newParticle.rotation = 0.0f;
newParticle.angularVelocity = 1.0f;

return newParticle;
}
}