Hello everyone, I am very new to these forums but have been messing with Unity for a while now. I am trying to make a simple game just playing around (basic primitives, etc.). However I have already hit a wall.... In the game I'm making a blue cube shoots a little blue ball at a red cube. I would like the little blue ball to disappear when it collides with anything; the red cube, something else, myself, etc. This little blue bullet shoots slowly so I don't want to use RayCasts because I want to see the bullet at all times. I have it now as a rigidbody, unaffected by gravity so that it doesn't drop as it flies through the air. No matter what I do and no matter how hard I search I cannot find a way to make it detect the collision and destroy itself! All of the collision scripts add in explosion prefabs and sounds and things, but all I want is for the cube to simply vanish when it hits another object. Be it the character with a charactercontroller or a rigidbody. I will now insert two of the scripts I am using for the bullet prefab, if someone can alert me to a means of posting the whole scene on the internet or on this site for better clarity I would gladly post it.

This first code is to make the bullets disappear if they don't hit something

var lifespan= 5;

function Update () {

    Destroy(gameObject,lifespan);

}

The next code is what should destroy the bullet(clone) object once it hits something.

function OnCollisionEnter(collision : Collision){

    Destroy(gameObject);
}

Sure is funny how things can go wrong with such simple things! Thank you in advance for the help!