Discovered by: Ralf Schreivogel
Demo: u4m3-012.zip (07/06/1999)
Fastest demo: u4m3-008.zip (14/11/2002) by Marijo "Sedlo" Sedlic
Skills needed: precise strafe50 running
Difficulty: medium, but it's strafe50 only
This jump (and its twin brother, the E1M4 one) pushes the DOOM engine to its limits. It shows off a 192 unit jump which is about the biggest possible.
As we know, this jump involves a DOOM bug and wouldn't be possible without it. The bug is that the calculation of the player's speed is incorrect when a transition from ground movement to air movement is made. In other words, the player moves faster in midair than on the ground without any reason. Of course this applies to all jumps, and also when running down stairs.
So far, the E4M3 jump has been done in UV and NM speedruns.
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