title: OnParticleTrigger(): How to get the collider a particle entered?
body: <p>I am trying to extinguish a fire in Unity3d. I have 2 particle systems: fire and water. Since 2 particle systems can't collide, i added a box collider to the base of the fire (where isTrigger is checked). I use <code>OnParticleTrigger()</code> to damage the health of the fire. But now I want to have multiple fires so I need to know which fire/box collider a particle entered. I know you can't get the collider like <code>OnTriggerEnter()</code>, but is there a way to work around it? </p>
  
  <p>I tried <code>OnParticleCollision()</code>, but the water particles bounce of the box collider (this is not the visual effect I want).  </p>