Rigidbody Collider Issues

Questions & Answers
1

Ok i have a rocket launcher that shoots out a rocket… Thats not the problem it shoots fine. The rocket is suppose to collide with any objects in its path and explode… I have an imported terrain(because flash doesn’t allow you to use the unity’s terrain) that has a mesh collider. The rocket shot has a capsule collider. The rocket however collides with every other object except the Terrain… It collides occasionally but not very often and i want it to collide every time. Rocket Script:

using UnityEngine;
using System.Collections;

[RequireComponent (typeof (Rigidbody))]

public class RocketExplode : MonoBehaviour {

public int timeOut;
public GameObject explosion;
public GameObject character;
    private Vector3 position;

void Start () {
	timeOut = 3;
	character = GameObject.FindWithTag("Player");
	Invoke("Kill", timeOut);
	Physics.IgnoreCollision(character.collider, collider);
}

    void FixedUpdate()
{
	if(transform.position != position)
	{
		if (Physics.Linecast (transform.position, position)) 
		{
            Instantiate(explosion,transform.position,transform.rotation);
		    Kill();
		}
		position = transform.position;
	}
}

void OnCollisionEnter(Collision collision)
{
	ContactPoint contact = collision.contacts[0];
	Quaternion rotation = Quaternion.FromToRotation(Vector3.up, contact.normal);
	
	Instantiate (explosion, contact.point, rotation);
	Kill();
}

void Kill()
{
	ParticleEmitter emitter = GetComponentInChildren<ParticleEmitter>();
	if(emitter)
		emitter.emit = false;
		
	transform.DetachChildren();
	
	Destroy(gameObject);
}
}

Also on top of that the rocket doesn’t destroy itself after it explodes… Any help is appreciated. Added in what syclamoth told me to do… did i do it wrong or something?

2

Augment the discrete rigidbody physics engine with a simple linecast collider:

var lastPos : Vector3;
var hitLayers : LayerMask;

function Start()
{
    lastPos = transform.position;
}

function FixedUpdate()
{
    if(Physics.Raycast(lastPos, position, hitLayers))
    // Make sure you use a layermask that excludes the bullet itself!
    {
        // POW!
    }
    lastPos = position;
}