I have a big problem with the development of my game. I've been working on a simple animation where a door would open and close. However, the door is more than just a door and a handle. It's more complex, with a working hinge and a box behind said door. The problem is that I want it as one single animation, instead of multiple objects having separate animations. I also need to keep this object joined so I can cook the texture into a UV map so I can transfer it to unreal. But I can't seem to figure out how to do the animations without having the hinge, door, handle, etc. attached together.