//NEED HELP// Vive Controller as animation trigger

Hi guys,

I'm an absolute beginner in C# so this is probably a very basic problem to you.
What I'm trying to achieve is to use a Vive's trigger button to start an animation. I tried this little script

Code (CSharp):

1. using System.Collections;
2. using UnityEngine;
3.  
4. public class animController : MonoBehaviour {
5.  
6.     public Animator anim;
7.  
8.  
9.     void Start () {
10.  
11.         anim = GetComponent<Animator>();
12.  
13.     }
14.    
15.     void Update () {
16.  
17.         if (Input.GetKeyDown("a"))
18.         {
19.             anim.Play("animate_display");
20.         }
21.     }
22. }
23.  
24.  
25.  

with only keyboard input, which worked just fine. Altering it for the Controller input like this:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using Valve.VR;
5.  
6. public class animController : MonoBehaviour {
7.  
8.     public Animator anim;
9.     public SteamVR_TrackedObject mTrackedObject = null;
10.     public SteamVR_Controller.Device mDevice;
11.  
12.     void Awake()
13.     {
14.         mTrackedObject = GetComponent<SteamVR_TrackedObject>();
15.     }
16.  
17.     void Start () {
18.  
19.         anim = GetComponent<Animator>();
20.  
21.     }
22.    
23.  
24.     void Update () {
25.  
26.         mDevice = SteamVR_Controller.Input((int)mTrackedObject.index);
27.  
28.         #region Trigger
29.    
30.         if (mDevice.GetTouchDown(SteamVR_Controller.ButtonMask.Trigger))
31.         {
32.             anim.Play("animate_display");
33.         }
34.         #endregion
35.     }
36. }
37.  

Only leaves me with the following error:

NullReferenceException: Object reference not set to an instance of an object
animController.Update () (at Assets/animController.cs:27)

and empting both these fields, Anim and Tracked object, as soon as I hit Play.

Reassigning them during Playmode gets it working.

I have no idea why that is and I'm sure there's a better solution to this.
Thanks for your help

 

Hi,
have you found a solution to this? i would also like to do something like that and would be very grateful if you could let me know how you did it.
regards,
charleen