This script, as posted on the AutoHotkey forums, sends a rapid "down-up" sequence every 50 milliseconds while you hold space, effectively automating the jump.
This script simply holds the spacebar down, which will make you jump repeatedly on the spot. While it technically chains jumps, it doesn’t work well for moving bunny hops due to how the engine handles airborne inputs. For true movement, you’ll need one of the more advanced methods listed below. left 4 dead 2 auto bunny hop full
Workshop mods like this only work if you are the host of the server. If you join a friend’s game, your mod will not affect them, and it may not work at all. This script, as posted on the AutoHotkey forums,