I am new in VR. I want to convert an android game to VR. This game is developed in UE 4.9. Now I am using UE 4.13. I want to apply push button locomotion technique. For example when i look forward to the direction which I want to travel, and then i push a button on my motion controller. or when I look down and can go down by pushing button(i do not have floor because this game is for solar system exploration). Click image for larger version

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Could someone guide me?