Detecting collision with DontGoThroughThings

Questions & Answers
1

I have a object moving at extreme speeds (around 50k in unity velocity units), so I used DontGoThroughThings to make sure it doesn’t pass through other objects.

The problem is I can’t get trigger OnCollisionEnter. I suspect this is because of the extreme velocity except DontGoThroughThings seems to fix that. (The code seems to return the object to its previous position until the engine detects a collision)

The object is spawned at the camera and hurled by an impulse using this code. The OnCollisionEnter function is near the bottom and consists only of a single print function.

#pragma strict

var projTemplate : Transform;
var muzzleForce : Vector3;
private var startTracking = 0;  
private var trackerTarget : Transform;

function Start () {
	if (muzzleForce == Vector3.zero)
		muzzleForce = Vector3.forward * 1;
}

function Update () {
	if (Input.GetButtonDown("Fire1")){
		var newProjectile=Instantiate(projTemplate,transform.position,transform.rotation);
		newProjectile.rigidbody.AddRelativeForce(muzzleForce,ForceMode.Impulse);
		startTracking=1;
		trackerTarget=newProjectile;
	}
	//if (startTracking)
		//printVel(trackerTarget);
}

function OnCollisionEnter(collision:Collision){
	print("Bazinga");
}

function printVel(newProjectile:Transform) {
		print ("Velocity: " + newProjectile.rigidbody.velocity.ToString());
}
2

Well…a laser beam is the Speed of Light(good luck representing that in any game engine)…Use a raycast and a co routine instead…

var distance=100.0;
var hit:RaycastHit;
if(Physics.Raycast(transform.position,Vector3.forward,hit,distance))
{
    if(hit.collider.tag=="Enemy")//Do Unto Enemy
}
3

Had to since I wanted it to interact with the environment.

Thanks for the raycast example.