Understanding OnTrigger methods in Unity

Let’s talk about OnTrigger methods in Unity! Do you know when they are invoked or for what you can use them? Let’s see in this post! ?

In one of the recent posts, we spoke about OnCollision methods and the fact that Unity has two separate physics engines.

Of course, like with collisions, there are different trigger methods for the 2D and the 3D engines. For 3D there are OnTriggerEnter(), OnTriggerStay() and OnTriggerExit() methods. For 2D there are almost the same OnTriggerEnter2D(), OnTriggerStay2D() and OnTriggerExit2D() methods.

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Understanding OnCollision methods in Unity

In this post, we’ll talk about Unity methods related to collisions. So fasten your seatbelt as we are heading into collision! ?

Currently, in Unity, there are two separate physics engines. One for 3D physics, and another one for 2D. Both work in the very same manner, but they are using different components.

So for example, if we want to turn an object into a physical object in 3D space, we would use Rigidbody. Analogous we would use Rigidbody2D if we want to turn it into a 2D physical object.

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