koobas.hobune.stream
Destroy On Collision
I got a rocket that follow you until it collide with something and explode. I wrote a simple code for the collision. The problem is that the rocket don't explode when it should: it fly through walls , touch me but continue to fly around, it explode only when I shoot on it.
The code I wrote shoulde make it explode when it collide with anything that have a collider, trigger or not:
var explodPrefab : Transform;
var spawnPoint : Transform;
function OnCollisionEnter (hit : Collision)
{
var exp = Instantiate(explodPrefab, spawnPoint.transform.position, Quaternion.identity);
Destroy(gameObject);
}
function OnTriggerEnter (hit : Collider)
{
var exp = Instantiate(explodPrefab, spawnPoint.transform.position, Quaternion.identity);
Destroy(gameObject);
}
Note: all the game objects have a collider on them.
Why this is happening?
collision will detect only for those body which have collider, e.g if "A" is colliding with "B" then there must be a collider with both A & Bm have don this? Note: A & B are game objects.
Try the script from the first person shooter tutorial. Script also assumes you have a particle emitter attached for the rocket trail. I use this and it works perfectly.
// The reference to the explosion prefab
var explosion : GameObject;
var timeOut = 3.0;
// Kill the rocket after a while automatically
function Start () {
Invoke("Kill", timeOut);
}
function OnCollisionEnter (collision : Collision) {
// Instantiate explosion at the impact point and rotate the explosion
// so that the y-axis faces along the surface normal
var contact : ContactPoint = collision.contacts[0];
var rotation = Quaternion.FromToRotation(Vector3.up, contact.normal);
Instantiate (explosion, contact.point, rotation);
// And kill our selves
Kill ();
}
function Kill () {
// Stop emitting particles in any children
var emitter : ParticleEmitter= GetComponentInChildren(ParticleEmitter);
if (emitter)
emitter.emit = false;
// Detach children - We do this to detach the trail rendererer which should be set up to auto destruct
transform.DetachChildren();
// Destroy the projectile
Destroy(gameObject);
}
//@script RequireComponent (Rigidbody)
Based on your description, I don't think your collision detection is working correctly. Do both your rocket and the object it is colliding with have colliders on them? Both will need a collider for a collision to be detected.
Yeah, the rocket need to destroy itself when it collide with anything that have a collider on it, even if the collider is a trigger. The rocket have a collider on it, it is not a trigger and the objects it need to collide with have a collider as well. The problem can be seen mostly when it go through the terrain.
Does the explosion prefab/effect get created successfully? If not, your hit code probably isn't being triggered. Your code in the question also says that the explodPrefab is a Transform. You can't instantiate a transform. It needs to be a GameObject. You may be getting an error when trying to instantiate the Transform and then it doesn't execute the Destroy()
Replace it with
Destroy(hit.gameObject);
But this will destroy the object the rocket hit and not the rocket...
I am using this code on the rocket, and the rocket should explode whenever it hit something with a collider, trigger or not.
I read somewhere that for fast moving objects the collider will pass through objects without triggering a collision (ie gets past object between 'updates'). Try making the collider bigger or slowing down the rocket.
