Jonas Mølgaard has made a lengthy tutorial about implementing a full body setup in VR with HTC Vive. It is a bit old, but could provide useful pointers how to make it from scratch.

Although there are all kinds of plugins available nowadays, we usually prefer to do things ourselves instead of using some 3rd party plugin. Reasons are quite simple. Plugins may include lots of features and code you may not need, plugins may be poorly optimized and their integration to project is not always smooth. If something suddenly does not work, it may be quite hard to find out where the problem lies. But if you make  everything yourself, you can optimize it as much as needed, have only features you need, and you are able to fix things because you know how it works.

You can find Jonas’ tutorial series in YouTube:

• part 1
• part 2
• part 3
• part 4
• part 5
• part 6
• part 7
• part 8
• part 9
• part 10
• part 11
• part 12
• part 13
• part 14
• part 15
• part 16
• part 17
• part 18