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Assets/SteamVR_Unity_Toolkit/Scripts/SteamVR_HeadsetCollisionFade.cs

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+using UnityEngine;
+using System.Collections;
+
+public struct HeadsetCollisionEventArgs
+{
+    public Collider collider;
+    public Transform currentTransform;
+}
+
+public delegate void HeadsetCollisionEventHandler(object sender, HeadsetCollisionEventArgs e);
+
+public class SteamVR_HeadsetCollisionFade : MonoBehaviour {
+    public float blinkTransitionSpeed = 0.1f;
+    public Color fadeColor = Color.black;
+
+    public event HeadsetCollisionEventHandler HeadsetCollisionDetect;
+
+    public virtual void OnHeadsetCollisionDetect(HeadsetCollisionEventArgs e)
+    {
+        if (HeadsetCollisionDetect != null)
+            HeadsetCollisionDetect(this, e);
+    }
+
+    protected HeadsetCollisionEventArgs SetHeadsetCollisionEvent(Collider collider, Transform currentTransform)
+    {
+        HeadsetCollisionEventArgs e;
+        e.collider = collider;
+        e.currentTransform = currentTransform;
+        return e;
+    }
+
+    protected void Start () {
+        this.name = "PlayerObject_" + this.name;
+        BoxCollider collider = this.gameObject.AddComponent<BoxCollider>();
+        collider.isTrigger = true;
+        collider.size = new Vector3(0.1f, 0.1f, 0.1f);
+        
+        Rigidbody rb = this.gameObject.AddComponent<Rigidbody>();
+        rb.isKinematic = true;
+        rb.useGravity = false;
+	}
+
+    protected void OnTriggerStay(Collider collider)
+    {
+        if (!collider.name.Contains("PlayerObject_"))
+        {
+            OnHeadsetCollisionDetect(SetHeadsetCollisionEvent(collider, this.transform));
+            SteamVR_Fade.Start(fadeColor, blinkTransitionSpeed);
+        }
+    }
+
+    protected void OnTriggerExit(Collider collider)
+    {
+        if (!collider.name.Contains("PlayerObject_"))
+        {
+            SteamVR_Fade.Start(Color.clear, blinkTransitionSpeed);
+        }
+    }
+}