Ok, I am not sure if this is what you want, but here is a crude implementation that does the follwoing:
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Use left analogue stick to control the charcter (move left and move right). Will not change charcter’s orientation
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Use right analogue stick to decide the facing direction. ie where the charcter looks at.
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This based on the side-scroller template from unreal engine. I added two new Action mappings (FaceRight to AnalogueRightStkRight and FaceLeft to ANalogueRightStkLeft)