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Doom with any source port | Steam overlay
In this manual I'll tell you how to run any Doom game with source port, such as Zandronum, Zdoom, gzDoom etc.
As you can see, Doom runs with Dosbox in Steam. And this is not very comfortable, because you can't play in openGL mode or with HD textures for example. So now I'll tell you how to handle this. But firstly, what is Source Port?
A Source Port is a fan-made program that allows you to play Doom on systems not originally supported (like XP, Vista or 7) or with new features and improvements, including 3D platforms support, OpenGL graphics, mouse look, higher resolutions etc.
There are many Doom Source Ports. All of them support all Doom games like Ultimate Doom, Doom 2, Final Doom and Master levels.
If you go to the Steam\SteamApps\Common\Doom 2\ directory, you can see there three .bat files, such as:
doom2 + mouse.bat - starts Doom with mouse control
doom2.bat - this starts Doom without mouse control (classic controls)
testapp.bat - this one we won't modify
If you go to the Steam\SteamApps\Common\Doom 2\base directory, you can see there DosBox files, Doom2.exe, Doom2.wad etc.
There are 2 solutions to run Doom with any Source Port. Let's start.
Ok, fisrtly, you need to download any Source Port and extract it into: Steam\SteamApps\Common\Doom 2\base
Then you must open doom2 + mouse.bat with notepad. In the file you will see this code: .\base\dosbox -conf .\base\doom2m.conf -fullscreen -exit exit
In doom2.bat you will see this: .\base\dosbox -conf .\base\doom2.conf -fullscreen -exit exit
So, then just delete all text in .bat file, which one you want to launch, paste this code (if you use Zandronum Source Port) and don't forget to save the file: .\base\zandronum.exe
If you use Zdoom - paste this: .\base\zdoom.exe
Or this one, if you use gzDoom: .\base\gzdoom.exe
That's all. Now you can launch Doom 2 with Zandronum or any other Source Port and enjoy the game with comfortable controls and OpenGL graphics.
Also, you can do another thing - after downloading Source Port, extract it into: Steam\SteamApps\Common\Doom2\base
Steam uses Dosbox.exe to run Doom, so just delete it and then rename zandronum.exe, for example, to dosbox.exe. That's all.
Enjoy the game:)
Sadly, you can enable steam overlay to take screenshots only in Ultimate Doom. But anyway, using, for example, Zandronum source port, you can play any .wad starting Ultimate Doom (Doom 2, TNT, Plutonia etc.).
To enable Steam overlay you need to use mine Solution №2 (only second, because the first one doesn't work with Ultimate Doom), then open ultimatem.conf file and find there these parameters: