From the blog "tipforeveryone's Blog"
II. Implement advanced actions
Previous tutorial guided you to create your own FPS Character Controller with basic actions: Move, Look.
This tutorial will help you add some advanced actions like Jump, Run, Crouch, and Lean
*Note: Below steps will use code from previous tutorial (CharacterController.lua)
1. Jump / Run / Crouch
Firstly, build obtacle with space under it to test crouching, the space height shoud be at least 120cm (leadwerks editor will show you this height