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How does a trigger work in unity3d codinblack?


Asked by Omari Edwards on Dec 14, 2021 FAQ



In the script above, OnTriggerEnter, OnTriggerStay and OnTriggerExit methods will run when an object that has a collider enters, stays and exits the volume of the trigger. Observe that Trigger methods take a parameter in the type of collider.
Indeed,
Triggers are a powerful tool in developing Unity games that every developer should know how to use. The goal of this tutorial is to teach readers how to set up an object to be a trigger and detect if it's been triggered from script.
Keeping this in consideration, One must have Collider.isTrigger enabled, and contain a Rigidbody. If both GameObjects have Collider.isTrigger enabled, no collision happens. The same applies when both GameObjects do not have a Rigidbody component. To use the following code sample, create a primitive GameObject, and attach a Collider and Rigidbody component to it.
Consequently,
OnTriggerEnter is called when the Collider other enters the trigger. This message is sent to the trigger Collider and the Rigidbody (if any) that the trigger Collider belongs to, and to the Rigidbody (or the Collider if there is no Rigidbody) that touches the trigger.
In respect to this,
In Unity, colliders are components that allow the physics engine to handle the collisions. The physics engine simulates collisions using colliders. We can determine which objects will collide with each other, or how objects will behave under collisions using colliders.