You need to save the name of the particle you want to update this functionality is complex enough to warrant a separate class the most basic one can be this:
public class ParticleWrapper
{
Vector particleSystems = new Vector();
Vector particleNames = new Vector();
RenderRef particleRender = null;
ParticleSystem particleRef = null;
public void AddParticle(String name,ResourceRef map, int ParticleTypeID
, Vector3 p, float rmin, float rmax, Vector3 vel,
float vmin, float vmax, float freq, float globalFreq)
{
particleRender = new RenderRef(ParticleTypeID);
particleRender.load();
particleRef = new ParticleSystem(map,particleRender,"scriptParticle");
particleRef.setSource(name, p, rmin, rmax, vel, vmin, vmax, freq, null);
particleRef.setFreq(globalFreq);
particleSystems.addElement(particleRef);
particleNames.addElement(name);
}
public void UpdateParticle(String name, Vector3 p, float rmin, float rmax,
Vector3 vel, float vmin, float vmax, float freq, float globalFreq)
{
for(int i = 0; i != particleNames.size(); i++)
{
if(particleNames.elementAt(i) == name)
{
particleSystems.elementAt(i).setSource(name, p, rmin, rmax, vel, vmin, vmax, freq, null);
particleSystems.elementAt(i).setFreq(globalFreq);
}
}
}
public void CreateOrUpdateParticle(String name,ResourceRef map, int ParticleTypeID
, Vector3 p, float rmin, float rmax, Vector3 vel,
float vmin, float vmax, float freq, float globalFreq)
{
for(int i = 0; i != particleNames.size(); i++)
{
if(particleNames.elementAt(i) == name)
{
UpdateParticle(name, p, rmin, rmax, vel, vmin, vmax, freq, globalFreq);
return;
}
}
AddParticle(name,map, ParticleTypeID, p, rmin, rmax, vel, vmin, vmax, freq, globalFreq);
}
public void CleanParticles()
{
for(int i = 0; i != particleSystems.size();++i)
{
particleSystems.elementAt(i).destroy();
}
particleSystems = new Vector();
particleNames = new Vector();
}
}
With this you can call the CreateOrUpdateParticle(..) function every time in the animate block and if you call it with a name already defined it wont create a new particle but instead move it but if the name does not belong to any particle yet it will create a new one.
