I need help with mouse look function for my first person shooter project.

The problem is when I move the mouse up and down, the gun rotates but when I move it left and right, it is just fine.

The problem is not the script as the demo file does not have this problem.

https://youtu.be/f7gkX0dCjHI

What could be the problem?

your rotating two axis at a time, instead of 1

also check out Simple Mouse,
or the new mouse actuator look mode?

Attachments

SimpleRig.blend (547 KB)

Thanks man that helped me to understand the process.