Game ignores my colliders

Questions & Answers
1

So I wanted to make simple reflection script and I came out with this

function OnCollisionEnter(col:Collision){

	if(col){
		col.rigidbody.velocity=(col.transform.position-transform.position)*force;
		rigidbody.velocity=-(col.transform.position-transform.position)*force/2;				
	}
}

It worked, but It bugged out when It touched the floor, so I added a little correction:

function OnCollisionEnter(col:Collision){

	if(col==GameObject.FindWithTag('Player')){
		col.rigidbody.velocity=(col.transform.position-transform.position)*force;
		rigidbody.velocity=-(col.transform.position-transform.position)*force/2;				
	}
}

and now it stopped bugging out when it touched the floor, but instead of reflecting my Player, it started to clip through it. Like there were no colliders at all. Can you help me?

2

Collisions aren’t equal to GameObjects. You have to use some member of the Collision class.

3

GameObject.FindWithTag(‘Player’) returns an object of type GameObject, while col is a Collision. The if statement will never return true.