Half-Life mod, that adds a wall jump to goldsource engine
These source files contain a patch for goldsource engine https://github.com/twhl-community/halflife-updated that adds a wall jump mechanic.
In order to apply patch use git apply command inside HL SDK C++ project.
Also, this repository holds J.A.C.K. source files for a map, that utilizes this game mechanic.
The link to a moddb page of this mod: https://www.moddb.com/mods/advanced-mobility-course
Demo video: https://youtu.be/YqO3bVhZfbI