MonoBehaviour.OnTriggerStay Manual     Reference     Scripting  
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MonoBehaviour.OnTriggerStay

function OnTriggerStay (other : Collider) : void

Description

OnTriggerStay is called once per frame for every Collider other that is touching the trigger.

This message is sent to the trigger and the collider that touches the trigger. Note that trigger events are only sent if one of the colliders also has a rigid body attached.

// Applies an upwards force to all rigidbodies that enter the trigger.
function OnTriggerStay (other : Collider) {
if (other.attachedRigidbody) {
other.attachedRigidbody.AddForce(Vector3.up * 10);
}
}

OnTriggerStay can be a co-routine, simply use the yield statement in the function.