A small Max patcher for mouse movement mapped to jit.gl.camera rotate messages.
Bring the first_person_camera abstraction into your patch.
A sample patch with a basic Jitter world and camera is also provided (fps_example_world).
For a more traditional FPS feel with grounded camera movement and WASD controls, check out the fps_physics_example_world. Note: this is relatively rough, but should give a good idea on how to implement this kind of control into your world.
If you run into anything that isn't behaving as expected, let me know in the Issues tab!