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Question by jjplay175 · Sep 16, 2014 at 04:44 PM · c#ontriggerstay

OnTriggerStay not updating

I have On
void OnTriggerStay()

But it only does the function once then stops, I need it to run constantly for this to work correctly

 void OnTriggerStay()
 {
     rightDoor.eulerAngles = Vector3.Slerp(currentAngle, new Vector3( 0, 90, 0), Time.deltaTime * speed);
     leftDoor.localEulerAngles = Vector3.Slerp(currentAngle, new Vector3( 0, -90, 0), Time.deltaTime * speed);
 }

Why is OnTriggerStay only running once? it moves 1 frame then stop

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Answer by tanoshimi · Sep 16, 2014 at 06:20 PM

I suspect OnTriggerStay is getting called correctly, every frame in which an object is within the trigger; the problem is with your use of Slerp.

What your code says currently is, in each frame, "Set the angle of the door to be t fraction of the way from currentAngle to some other angle." Where t is Time.deltaTime * speed. There's nothing in that statement that suggests that the door should continuously open or close - it's just set to a fairly arbitrary position.

Perhaps you meant:

 void OnTriggerStay()
 {
   rightDoor.eulerAngles = Vector3.Slerp(rightDoor.eulerAngles, new Vector3( 0, 90, 0), Time.deltaTime * speed);
   leftDoor.localEulerAngles = Vector3.Slerp(leftDoor.localEulerAngles, new Vector3( 0, -90, 0), Time.deltaTime * speed);
 }

?

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