Invalid Cast Exception

Unity Engine
1

I am working on what should be a simple instantiate script for firing a projectile.

I have used this syntax before without issue but I cannot get this to run properly. I keep getting an invalid cast exception but as far as I can tell I am keeping the type as a rigidbody.

It is the same code used in the FPS tutorial. I know certain parts are out-of-date but I thought this was still valid.

At this point the script creates instances but they have no velocity.

private var fireDist = 15;
var projectile : Rigidbody;
var fireRate = 0.5;
private var nextFire = 0.0;

function Update () {
	var jeepGO = GameObject.FindWithTag("jeep");
	var jeep = jeepGO.transform;
	var dist = Vector3.Distance(jeep.position, transform.position);
	
	if (dist < fireDist  Time.time > nextFire) {
        nextFire = Time.time + fireRate;
  		var bullet : Rigidbody = Instantiate (projectile, transform.position, transform.rotation);
		bullet.velocity = transform.TransformDirection (Vector3.up * 100);
    }
	
}

Any help is greatly appreciated,

Kevin

2

If you had projectile defined as some type other than Rigidbody before, try setting it to None in the inspector, and then dragging the prefab onto the slot again.

–Eric

3

Eric,

That did the trick - thanks!

Kevin