Check if object is colliding from another object.

Questions & Answers
1

If I have a script on GO1 and want to check if GO2 is currently colliding with something, how do I check without having a script on GO2?

2

If GO2 has a capsule or sphere collider, you can use the Capsule or Sphere static methods in the Physics object. Otherwise, if GO2 has a rigidbody, you could perform a sweep test. Beyond these simple options, you’ll need to either add a script to GO2 or roll your own collision detection.