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Hacking the DOOM.EXE file

   (8 reviews)
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About This File

The file dehacker.zip contains the article "Hacking the DOOM.EXE file". It will form the basis for a new chapter in the forthcoming 1.4 doom specs. Also included are 5 simple Qbasic programs to extract text lists of stuff talked about in the article. Some neat things can be done by modifying the EXE file, including making any thing have the same "inviso" property that spectres have, making any monster "float" like cacodemons, making cacodemons "shoot" lost souls instead of lightning-balls (sort of...make your own pain elemental! Don't wait for Doom II).

There's the potential for a skilled programmer with time and vision to make a "Doom customization kit" so that everyone can enjoy the possiblities.

All the info is based on the registered 1.2 version, and will be updated when 1.4 comes out. Also, please note that those without experience as hackers will probably just be confused by this material.


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Doomkid

  

Historic. This seems to be the first ever use of the term "dehack" too.

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  • File Reviews

    • By Erick · Posted
      There's definitely some ideas put into use here, but the result is rather sloppy. You start off with three teleporters in the first room, so going in blindly, I couldn't tell if I had to take one teleporter first or if I can complete the level in any (almost) order. To sum it up, you have to go through these teleporters in a linear order to complete the level, otherwise you'll be greet you with locked doors that serve to remind you that you're going the wrong way. The level itself isn't overly confusing, but coming in the gauntlet room unprepared left a sour impression.   The majority of rooms are spacious and not very pleasing to look at. You'll see big open rooms with dirt and marble textures placed throughout, and aside of the pentagram room with Spectres and an Arch-Vile at the center, the map just boils down to big rooms and hallways you can run past through. With good use of powerups, you can get by most threats without an issue. There's some bits of carnage, but the overall gameplay feels plain.   A little heads up, but when playing on a ZDoom port, the teleporters at the start of each area will teleport you to a random destination. That is because their lines are zero-tagged teleport actions, meaning they will teleport you to any destination placed on a zero-tagged sector. This can make the level more confusing to complete as you may end up in an area you aren't supposed to be at. When playing in vanilla, these teleporters will always teleport you to the start of the level.
    • By Erick · Posted
      Decent 1994 WAD with some alright use of textures and nice swarm of monsters when you hit all the switches at the center part of the level. It's pretty standard as far as gameplay goes, it has a few optional areas you can go to but otherwise, it's short and linear. Compared to many other levels around the time, this isn't too bad.
    • By MuratMikal · Posted
      There're some obnoxious counter intuitive puzzles along the way but that aside it's a fair megawad. The maps are well made and the overall difficult is in the right spot for me.
    • By Player Lin · Posted
      Unless the author intended made this map looks like his(?)/someone's nightmare then I think it's fine to use Nazis-themes textures and monsters but I'm not sure...firstmap? Okay...     I feel the final battle just boring because you can just using BFG9000 to clear the whole room without any problems(unless you wasted all of your cell ammo)...even the custom monster can't hold it.   Texturing just not good but I think it can be improved, I would like see more if the author still making DooM levels...2/5
    • By Player Lin · Posted
      It's not a bad map, but nothing so special, no idea should this be a ZDooM-needed map...   But whatever...it's a decent map to me, just a little hard in beginning but after that(well, at least megasphere provided, just come back later after you have more stuff to deal with those barons and knights), nobody would has problems to blast through the level. Yeah, some may found this map boring but I'm fine with that...3/5
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