This video shows how to use the Pivot Painter addon in Blender to create assets that respond to player position.
The addon is completely free:
https://drive.google.com/open?id=1qxCUAf66P9urLKv3-5lzGDHZ4sMV2Xdl
Download the material here:
https://drive.google.com/open?id=1dYaPzEaALFdv1tdvSZxZvQ-pbCNX96M3
Source
