Foreign YouTuber exploits “Doom II” vulnerability to run “Doom” in “Doom” – Programmer Sought

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It seems that no one can stop foreign players’ love for “Doom”. Following Lego blocks, dial phones, GAME & WATCH Super Mario Bros, Potato, etc., foreign YouTube recently discovered “Doom”. II has a loophole that makes it possible to run the Doom game in Doom, which means you can play Doom in the Doom game (enough rap), and he also puts the related programs The code is shared on GitHub, and friends who are interested can try it.

Foreign YouTuber Uses Doom II Vulnerability to Run Doom in Doom

A few days ago, the foreign YouTube channel kgsws uploaded a “You can run Doom inside (DOS) Doom, for real.” video. According to the description, he said that he found a code loophole in the original DOS “Doom II” game version. , which allows Chocolate Doom to execute internally, the DOS version available on Steam, and run using the DosBox emulator.

In the video, he details the process of modifying the code and how to make Chocolate Doom run internally:

Like this, the wall in front is where Doom is played, and the following image is not fully revised:

Then he made some adjustments and successfully executed another Doom II in it:

It can indeed be played, but it is not so easy to control at present. The “Doom II” inside moves with the “Doom II” outside. For example, after the gun is fired outside, the inside will be opened after a beat:

Then he made some modifications, so that the “Doom II” outside would be like watching a movie, standing still, and the manipulation would only affect the “Doom II” inside:

In the next few days, he also made the “Doom II” outside like a movie theater:

For those who are interested in trying it out, he has shared the relevant code files on the GitHub website and used the DosBox emulator to run it. Copy kgdid.wad to the directory where doom2.exe is located, then use the command “doom2 -file kgdid.wad” in DosBox to start it. As a reminder, you must have the DOS version of Doom II to try it out.

In addition to Doom II, kgsws has also successfully loaded other games into Doom II, such as Heretic.

Full video:

What makes people curious is that I don’t know whether it is really because foreign players particularly like the “Doom” series, or because it has a lot of developmental potential. Every time I see a strange transplant, I use the “Doom” game.

For those who have the first generation of “Doom”, someone has added Ray Tracing to this old game before, the picture quality has been greatly improved, and the file has also been shared on the GitHub website. If you want to know more, you can click I read:

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