Why are my colliders not colliding?

You are using OnTriggerEnter but the box collider has IsTrigger unchecked. You could either turn on IsTrigger or use OnCollisionEnter instead.

Do I need rigidbody for collision?

So yes, at least one of the objects involved in a collision needs to be a (kinematic) Rigidbody.

What is rigidbody unity?

Rigidbodies are components that allow a GameObject to react to real-time physics. This includes reactions to forces and gravity, mass, drag and momentum. You can attach a Rigidbody to your GameObject by simply clicking on Add Component and typing in Rigidbody2D in the search field.

Does On Trigger Enter require rigidbody?

It doesn’t have to be an non-kinematic rigidbody though – so if you have objects you don’t wanna do physics (like gravity) for, you can attach a rigidbody still to it, and set the kinematic checkbox. Then when that object hits your trigger or another object with OnCollisionEnter then it should work.

Why is collider not working Unity?

Change the rigidbody to dynamic and make sure your circle collider covers the whole sprite or atleast areas you want. Also make sure your other colliders are in right position and size so that the two colliders actually collide with each other.

How do I make a collision in Unity?

Anyway, it should be as simple as this…

1. Create a player with a rigid body and a collider.
2. Create an obstacle with a kinematic body and a collider.
3. Attach a script to the player, including the method OnCollisionEnter2D(). Upon collision do….

What is the difference between on trigger enter and on collision enter?

An easy way to differentiate between the two is to think of them visually. OnCollisionEnter can be visualized as colliding against a wall, and OnTriggerEnter can be visualized as triggering an alarm. Let’s take a look at them individually.

https://www.youtube.com/watch?v=vTZGir7Kzfk