“How to fly in games” is easier to understand now (for example) “how to fly” after 4 days of reading docs and checking tutorials available online as well as GameMaker’s forum topics. I created a nasty small game** (simple platform with’shoot to kill’ scenario) Using “GameMaker Language” to proceed, we have a very simple code for moving our player. We need to add a’super jump’ (normaly ‘hidden in the documentation’ let’s say, but still visible during reverse engineering or code review of the game) so: Variable vsp (for vertical speed), when using left-Shift will increase to “- 20″ so our player will be able to jump very, very high.”]
Source: https://code610.blogspot.com/2020/03/playing-games-with-games.html