Play animation with Raycast

Questions & Answers
1

Hi, So i’m trying to play a animation (open a chest) using raycast.

I’m trying to trigger a function called PlayForward(); with this code:

var ChestAnim : OpenChest;

    function Update () {
     	var cam : Transform = Camera.main.transform;
        var ray = new Ray(cam.position, cam.forward);
        var hit : RaycastHit;
        if(Input.GetKeyDown(KeyCode.F)){
        Physics.Raycast (ray, hit, 30);
        Debug.DrawLine (ray.origin, hit.point);
           
           if (hit.collider.tag == "Chest"){
           
           
            ChestAnim = gameObject.GetComponent("OpenChest");
           	ChestAnim.PlayForward();
       		Debug.Log("your raycast hit door");
        	}
                         
     	}
    }

And the script on the Chest is:

public var animationClip : AnimationClip;

function PlayForward()
{
   animation[animationClip.name].speed = 3.0f;
   animation.Play(animationClip.name);
}
 
function PlayBackward()
{
   animation[animationClip.name].speed = -3.0f;
   animation[animationClip.name].time = animation[animationClip.name].length;
   animation.Play(animationClip.name);
   }

I don’t get any errors unitill i press “f” on the chest. Then i get “Object reference not set to an instance of an object RayCast.Update ()” anyone know what the problem is?

Thanks!

2

Your problem is on line 14

ChestAnim = gameObject.GetComponent("OpenChest");

This code links to the GameObject with this script attached to it. To access the chest, you need to use this

ChestAnim = hit.collider.gameObject.GetComponent("OpenChest");

This should solve your problem

~ExplodingCookie