Physics.Raycast Help

Questions & Answers
1

Is there reason why this isn’t working? I’m not getting anything for the length1 variable. (I have declared a length1 variable elsewhere in the code[this is the only part that matters])

 function Update() {
    	
    	var fwd = transform.forward;
    	
    	if(Physics.Raycast (transform.position, fwd, 50)){
    		length1 = Physics.RaycastHit.distance;
    	}
    	
    	Debug.DrawRay(transform.position, transform.forward, Color.green, length1);
    
    	
    }

Ok thanks! Now I have another question, how can I get this to work?

function Update() {
	var lineRenderer : LineRenderer = GetComponent(LineRenderer);
	var fwd = transform.forward;
    var hit: RaycastHit; // declare a RaycastHit variable...
    // and pass it to the Raycast function:
    if(Physics.Raycast(transform.position, fwd, hit, 50)){
        length = hit.distance; // then get the result from the hit variable
    }else
    	length = 100;
    	
    lineRenderer.positions[1].z = length;
}
2

Hmm I had a problem like this a while back.

I’m guessing that length1 aint working because you never declared the raycast hit in the raycast (did I say that right?) so you would want something more like this.

var hit:RaycastHit;
if (Physics.Raycast(transform.direction,fwd,hit,50))
     length1 = hit.distance;
3

You must pass a reference to a RaycastHit variable to get the results:

function Update() {

    var fwd = transform.forward;
    var hit: RaycastHit; // declare a RaycastHit variable...
    // and pass it to the Raycast function:
    if(Physics.Raycast(transform.position, fwd, hit, 50)){
        length1 = hit.distance; // then get the result from the hit variable
    }
    // NOTE: I suppose this instruction should be inside the if:
    Debug.DrawRay(transform.position, transform.forward, Color.green, length1);
}