Newb Question: Can't find collider of Rigidbody

Unity Engine
1

I’m pretty new to Unity and I’ve been trying to debug a question for hours.

I created a “player” prefab in editor and assigned it a rigidbody. I then attached a “weapon” prefab in a script and added it as a child to “player”. I then created a “bullet” object in script, also rigidbody in the manner of the fps tutorial. I want to make sure the bullet doesn’t collide with the player. However, when I try to call:

Physics.IgnoreCollision(newBullet.collider, transform.root.collider);

I get the following error:
“MissingComponentException: There is no ‘Collider’ attached to the “player” game object, but a script is trying to access it.”

I’ve been looking for hours to see what I could’ve done wrong. From my understanding, a rigidbody would have a collider object right? All the child objects of my prefab have collider objects. I assumed there would be a compound collider on the rigidbody created that would catch collisions. Do I have to create some sort of an object on the player? Any help would be greatly appreciated!

2

The main question for you to answer is, where in the player prefab is the collider. transform.root brings you to the root of all game object, so I doubt that this is what you want. Instead, I assume that the collider is in a child of the transform, which means you can use GetComponent or GetComponentInChildren.

3

Thanks for the reply Dantus. I’m guess I’m not understanding the prefab model very well. I attached a rigidbody to the prefab object and have basic colliders for its children, the head, torso and such. I assumed that I could refer to the parent prefab GameObject and get the collider of it. I thought that a rigidbody would create a compound collider or something by default. Should I be referencing the colliders of individual children?

4

If you need to access some specific colliders, it makes indeed sense to have a variable directly in the inspector, such that you can be sure to have the right one.