simply math question - rotate actor facing the camera

Development Cinematics & Media
, , ,
1

Hello,

I can currently pick up an object Simply put, I can “pick up” ab object Skyrim-style, and it will follow the player. This is done using the “PhysicsHandle” component and the “Grab Component” method.

The issue is that I want the object to rotate according to wherever the camera is looking. The code I have for that looks like this: (this is run ON TICK)

310859-handlepikcup2.png
310859-handlepikcup2.png1127×651 137 KB

However, unfortunately it doesn’t rotate it exactly to the camera, and rotates differently depending from which angle the object was picked up.

310860-handlepikcup.png
310860-handlepikcup.png1205×582 461 KB

You can see it’s not facing the camera.

This should be easy to fix, I would like to know how.

Thanks in advance!

2

That’s because you’re setting the rotation of the Physics Handle that is, if I understand it right, a mere point in space, and its rotation doesn’t really matter. Instead, you need to set the rotation of the picked object. Whenever you pick it, save it to a variable, say, “Current Held Object”, and set its rotation.

3

Do you need your subject to look directly into the camera? It looks good too.

4

The most important advice is to double-check all the data; first, there may be an error somewhere. There may also be a problem in geometry. In general, it would be better to get acquainted with the theory of mathematics for a better understanding of the process. I recently recalled a student program with this educational site [ and filled in a lot of gaps. Maybe it will be helpful for you. Often, young programmers and 3D visualizers lack basic knowledge of mathematics.