I have an fps camera, and i am representing rotation with quaternions. every frame i grab how much the mouse moved that frame and then i simply do
Quat DeltaQ = Quat::CreateRotationXYZ(MouseYDelta, MouseXDelta, 0); m_CurrentRotationQ = DeltaQ * m_CurrentRotationQ;
however, everything works until i rotate 90 degrees to the right. when i do that i cannot rotate up and down. also, moving the direction i am facing works, however, depending on where i am looking strafing left and right moves me in different directions, I've tried many things such as reversing order of multiplication, i'm really at a loss. Any help would be greatly appreciated.