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Question by Trotski94 · Feb 12, 2016 at 10:34 PM · c#camerascript.

How can i move my camera forward independent of its pitch?

I cannot work out for the life of me how to do this.. The player is allowed to angle the camera, however, i want the camera to exist on a fixed Y axis, as such only the X & Z parts of the vector will change and Y will remain constant.

My only issue is is that if i use transform.forward it will always change the Y axis if the camera is pitched, and if i use transform.forward and set the end results y value to the fixed level i want, the speed of the camera is directly affected by the pitch and i want it to be completely independant, constant Y constant movement speed camera, how would i do this? Can i not use transform.forward?

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Answer by TreyH · Feb 13, 2016 at 12:26 AM

Easily: If you're using this to move the camera in a forward direction along the y-axis,

 // Get the forward vector along a constrained Y-Space
 Vector3 ConstrainedForward(Transform focus)
 {
     // Get the natural forward transition
     Vector3 naturalForward = focus.forward;
     // Nullify its y-component
     naturalForward.y = 0;
     // Normalize xz-plane and align it with the chosen y-axis
     Vector3 fixedForward = naturalForward.normalized;
 
     // This gives us a vector whose xz-planar speed is normalized
     // while preserving the fixed Y component
     return fixedForward;
 }
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