Updates to sdl doom to be compatible with ggmicro.

Support for Chex Quest (chex.wad) and Chex Quest 2 (chex.wad and chex2.wad) added.

SDL DOOM 1.10 - modifications for linux-x64 and newer SDL

The official SDL Doom website: http://www.libsdl.org/projects/doom/

This is a fork of the SDL port of Doom from Sam Lantinga. Since it is very old, it doesn't work on many systems. Also there are a few bugs which need to be fixed. The goal of this repository is to build a version which works on every linux with every SDL and then make a few nice modifications in the game :-)

From the Doom wiki (http://doom.wikia.com/wiki/SDL_Doom):

"SDL Doom or SDLDoom is an old and simple port of Doom, made by Sam Lantinga in the year 1998. As its name states, it uses the Simple DirectMedia Library for the drawing functions. SDL Doom is programmed in the C language and is open source. It was the basis of the first Symbian OS Doom port, CDoom and later the C2Doom project. It doesn't support custom WAD files. Only DOOM1.WAD, DOOM.WAD, DOOM2.WAD, DOOMU.WAD, PLUTONIA.WAD and TNT.WAD are supported."

Installation

For now the game only works when SDL and the game itself are comiled in 32 bit mode. Here are some commands that will do the installation procedure for you:

Install the Linux 32-Bit librarys:

$ sudo apt-get install ia32-libs

Download SDL 1.2 (http://www.libsdl.org/download-1.2.php), navigate into the downloaded SDL directory, then enter:

$ ./configure CFLAGS='-g -O2 -m32' LDFLAGS='-m32'  
$ make  
$ sudo make install

Navigate into the Doom-files directory and enter:

$ ./configure --disable-sdltest && sed -i s/'^CPPFLAGS ='/'CPPFLAGS = -m32'/g Makefile && sed -i s/'^LDFLAGS = '/'LDFLAGS = -m32'/g Makefile  
$ make

Then you can start the game with:

$ ./doom

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