Rocket jump in Doom 2: HOE, map 14

Hi all. Recently I became a sort of a "speedrunner" in Doom 2: Hell On Earth. What I am actually doing is just playing my favorite game in a fast manner, trying to achieve any possible tricks I watched on youtube. I managed to perform several tricks: glides, archvile jumping, SR50. The only thing that I can not perform and which is crucially needed in map 14 is a rocket jump.

I watched tutorials about how to rocket jump generally. I downloaded a "PracticeHub" wad and performed rocket jums there relatively easy (after some practice). I watched all the speedruns from the famous masters like ZeroMaster. But I still can not perform this rocket jump in map 14 (the Inmost Dens). It looks so easy, but nothing.

Is there any secrets about it? Exact coordinates? Exact angle? I tried thousands times with different angles, no luck.

I use dsda-doom 0.26.0 and also tried a cryspi-doom 5.9.2. I have the "always run" option turned on. I use SR50.

The place where I am stucked is in attach, as well as my initial position.

P.S. Map 9 (The Pit) is also the problem, but I can avoid the rocket jump with a small (acceptable for me) increase in time there, so the real first big problem is a map 14.

I think your position+angle are fine, so it should be either your rocket timing is off or your SR50 key presses don't all start on the same tick.  If you turn on Command Display in dsda-doom, you can verify that the first input shown is "MF50 SL50", and not "SL40", "MF50", or "MF50 SL40".  The tick you fire on will show an A on the movement display, and should appear after like 4-6 movement frames of SR50 (its not very precise).

Also, in case you haven't seen it, ZeroMaster and Looper use a momentum trick on MAP14 now instead of the rocket jump.  It should be faster, safer, and generally more reliable:  https://youtu.be/BgSNDqBQ78I?t=530

Thank you for the answer, kmc. I saw this momentum trick before but did not understand how to perform it. Will you bother to explain what I need to do to achieve this? I tried "wallrunning" but with no luck as there is not enough room there to gain necessary speed. ZeroMaster manages to do it somehow just from the very start of the movement (I can even see his gun going up and down). Is this a some known trick?

P.S. Still no luck with the rocket jump. "MF50 SL50" are there and the ticks before the A fire are 4-6, but nothing. Trying this "momentum" trick therefore.

You have to get as close as possible to the wall to exploit a momentum bug. Your position needs to reach the .00000 co-ordinate (so in this case, Y = exactly -344). You can achieve this with VMM, it's exactly the same as performing a glide. After that you call the lift, line up an exact angle, then SR50 to the exit.

Meowgi explains it wonderfully 15 minutes into this video - watch the rest if you don't know how to glide in the first place. And Linguica explains how the bug works (with this exact map as an example) in the Movement Bible: https://www.doomworld.com/forum/topic/87199-the-doom-movement-bible/?tab=comments#comment-1587758

Thanks Billa. Using this technique I managed to pass the level, as well as the next level with a zero switch.

Did not understand about why the rocket jump is not working, but it's fine for now. Thanks all.

I will use this topic in case I will face some hard problems in future.

On 6/7/2023 at 7:37 PM, BlackAgate said:

Thanks Billa. Using this technique I managed to pass the level, as well as the next level with a zero switch.

Did not understand about why the rocket jump is not working, but it's fine for now. Thanks all.

I will use this topic in case I will face some hard problems in future.

By the way I suggest joining dsda discord server (link can be found in welcome thread here https://www.doomworld.com/forum/post/2529160) for faster and easier communication in case of future questions :)