How can particle emitted when collider hit an object?

Physics
1

Hello everyone!
I’m trying to create a new script for doing something with particle system.

This script start with following details:

function OnControllerColliderHit(hit:ControllerColliderHit){
	
	if(hit.gameObject.tag == "findo"){
		
		Destroy(hit.gameObject);
	}	
}

I put an object its tag named “findo”,now the character can destroy the object when collider hit.
But the most important is I want a particle I’v created immediately play (when hit and object destroyed)
I don’t know how to do :cry: I’v tried so many hours and just couldn’t get it!
Can someone help me solve this problem? I have no idea with scripting.

THANKS!!

2

Hello,

Try something like this,

Create a prefab of your particles then instantiate it when when your object gets hit

function OnControllerColliderHit(hit:ControllerColliderHit){ 
    
   if(hit.gameObject.tag == "findo"){ 
       
      //Instanstiate    your particle prefab here  
      Destroy(hit.gameObject); 
   }    
}

Hope it helps,

Ray

3

Thanks for replying me!

I have tried your suggestion, but I’m not familiar with using Instantiate at all.
I searched the information about script of prefab and instantiate, trying and modifying many details.
But still dont know the correct way.

well…at first I put the particle into a new prefab (named “prefab_eatfindo”) and typed

Instantiate("prefab_eatfindo");

at the place you suggest.
It seems like the form is totally wrong :sweat_smile:
After that, I also try to add some parameter I’ve found from UnitySupport like:

Instantiate("prefab_eatfindo", Vector3(10,10,10));

Many many embarrassing example like that. I really have no idea.
I think my experience is so poor to solve the problem. What I need is more study although its not my field.

Thanks for the reply again!

4

Hello,

The FPS tutorial has an explanation of instantiating game objects, rigidbody.

Also there are lots of tuts somewhere in the forum, I think a user posted some of the links. Those tuts should help you get some of the needed info to get you going.

Here’s an example:

//variable for your particle prefab that you created and saved as a prefab.
//drag that particle prefab here in the inspector

var particle : GameObject;


function OnControllerColliderHit(hit:ControllerColliderHit)
{ 
     if(hit.gameObject.tag == "findo")
    { 
       var theClonedParticle : GameObject; // this will create a holder for the particle so we can destroy the instance of the prefab

       theClonedParticle = Instantiate(particle, transform.position, transform.rotation); // this line will instantiate a copy of the prefab to the location of the game object it is attached to.
			
      theClonedParticle.particleEmitter.emit = true;// since it's a particle emitter, we just tell it to emit just look at the paarticle prefab you created if the emit box is uncheck

     Destroy(theClonedParticle, 3);//we destroy the particle in a few seconds 3 seconds for example

     theClonedParticle.audio.Play();//if you want to play some background explosion or something, just make sure you have audio source attached 
     Destroy(hit.gameObject); 
   }    
}

Something like that might work

the tuts from FPS asa well as unity tutorials explains things better than I can.

Hope that helps.

Ray

5

I have tried the code. I put it in script for character and it works!
Now the particle can correctly emit and destroy at the right time. The comment you posted is very clear.
I am so glad to see it run!
I found FPS tutorial (http://unity3d.com/support/resources/tutorials/fpstutorial ) and downloading now, it’s just ignored as I was not understand what is FPS.

Really THANKS for your kindness!
I will keep researching the scripts.