This tutorial shows how to add more animations and how to stop animations from being changed part way though. Left/Right arrow - walk left/right R (whilst walking) - run Up arrow - somersault Down arrow - roll Space bar - handspring
The Stick-Man studio contains many more tutorials as well as the Stick-Man Animator and the Stick-Man Player. Stick-Man Studio: https://scratch.mit.edu/studios/5265726 The scripts in the tutorials are fully commented and are intended to be looked at by people wanting to learn how to use the Stick-Man Player in their own projects.