I want to use the Particle Stream but be able to change its pitch (up and down). By default, it always points straight ahead, and can be rotated around the Y access with the mouse. However, guns (like the assault rifle) can be pointed up and down as well by the animator pitch parameter. I know this is already built into the system, but I have no idea what I should change so that the Particle Stream item allows for the pitch to to be changed.