jdah / doomenstein-3d

Wolfenstein/DOOM style software renderers

Wolfenstein/DOOM style software renderers

• src/main_doom.c: a DOOM-style software renderer
• src/main_wolf.c: a Wolfenstein 3D-style software renderer

Building & Running

$ make doom|wolf|all, binaries are bin/doom and bin/wolf respectively

doomenstein-3d's Issues

This is a mess to compile on Linux.

So I was going to compile Doom on Linux Mint, typed in make doom and I got this error:

rsync -a --include '*/' --exclude '*' "src" "bin"
make: brew: No such file or directory
/bin/clang -o bin/src/main_doom.o -MMD -c -std=c2x -O2 -g -fbracket-depth=1024 -fmacro-backtrace-limit=0 -Wall -Wextra -Wpedantic -Wfloat-equal -Wstrict-aliasing -Wswitch-default -Wformat=2 -Wno-newline-eof -Wno-unused-parameter -Wno-strict-prototypes -Wno-fixed-enum-extension -Wno-int-to-void-pointer-cast -Wno-gnu-statement-expression -Wno-gnu-compound-literal-initializer -Wno-gnu-zero-variadic-macro-arguments -Wno-gnu-empty-struct -Wno-gnu-auto-type -Wno-gnu-empty-initializer -Wno-gnu-pointer-arith -Wno-c99-extensions -Wno-c11-extensions -iquotesrc -Ilib/SDL/include src/main_doom.c
make: /bin/clang: No such file or directory
make: *** [Makefile:70: bin/src/main_doom.o] Error 127

So I thought "OK, I'll compile myself" and typed gcc ./src/main_doom.c just to be greeted by this other error:

./src/main_doom.c:3:10: fatal error: SDL.h: No such file or directory
    3 | #include <SDL.h>
      |          ^~~~~~~
compilation terminated.

After changing SDL.h to SDL2/SDL.h to comply with Linux's include file structure and tried again.
It threw a bunch of errors regarding boolean values which prompted me to also #include <stdbool.h>.
I gcc ./src/main_doom.c'd again just for it to throw me this other beautiful list of errors:

/usr/bin/ld: /tmp/ccoViwXv.o: in function `rotate':
main_doom.c:(.text+0x39): undefined reference to `cos'
/usr/bin/ld: main_doom.c:(.text+0x6d): undefined reference to `sin'
/usr/bin/ld: main_doom.c:(.text+0xb2): undefined reference to `sin'
/usr/bin/ld: main_doom.c:(.text+0xe6): undefined reference to `cos'
/usr/bin/ld: /tmp/ccoViwXv.o: in function `screen_angle_to_x':
main_doom.c:(.text+0x3f3): undefined reference to `tan'
/usr/bin/ld: /tmp/ccoViwXv.o: in function `normalize_angle':
main_doom.c:(.text+0x460): undefined reference to `floor'
/usr/bin/ld: /tmp/ccoViwXv.o: in function `render':
main_doom.c:(.text+0xefd): undefined reference to `atan2'
/usr/bin/ld: main_doom.c:(.text+0xf61): undefined reference to `atan2'
/usr/bin/ld: main_doom.c:(.text+0x10ba): undefined reference to `atan2'
/usr/bin/ld: main_doom.c:(.text+0x1141): undefined reference to `atan2'
/usr/bin/ld: main_doom.c:(.text+0x1253): undefined reference to `atan2f'
/usr/bin/ld: main_doom.c:(.text+0x126a): undefined reference to `sin'
/usr/bin/ld: main_doom.c:(.text+0x1c66): undefined reference to `SDL_Delay'
/usr/bin/ld: /tmp/ccoViwXv.o: in function `present':
main_doom.c:(.text+0x1de9): undefined reference to `SDL_LockTexture'
/usr/bin/ld: main_doom.c:(.text+0x1e4d): undefined reference to `SDL_UnlockTexture'
/usr/bin/ld: main_doom.c:(.text+0x1e61): undefined reference to `SDL_SetRenderTarget'
/usr/bin/ld: main_doom.c:(.text+0x1e85): undefined reference to `SDL_SetRenderDrawColor'
/usr/bin/ld: main_doom.c:(.text+0x1e99): undefined reference to `SDL_SetRenderDrawBlendMode'
/usr/bin/ld: main_doom.c:(.text+0x1ea8): undefined reference to `SDL_RenderClear'
/usr/bin/ld: main_doom.c:(.text+0x1ee0): undefined reference to `SDL_RenderCopyEx'
/usr/bin/ld: main_doom.c:(.text+0x1ef4): undefined reference to `SDL_SetTextureBlendMode'
/usr/bin/ld: main_doom.c:(.text+0x1f32): undefined reference to `SDL_RenderCopy'
/usr/bin/ld: main_doom.c:(.text+0x1f41): undefined reference to `SDL_RenderPresent'
/usr/bin/ld: /tmp/ccoViwXv.o: in function `main':
main_doom.c:(.text+0x1f8d): undefined reference to `SDL_Init'
/usr/bin/ld: main_doom.c:(.text+0x1f96): undefined reference to `SDL_GetError'
/usr/bin/ld: main_doom.c:(.text+0x1feb): undefined reference to `SDL_CreateWindow'
/usr/bin/ld: main_doom.c:(.text+0x2003): undefined reference to `SDL_GetError'
/usr/bin/ld: main_doom.c:(.text+0x2047): undefined reference to `SDL_CreateRenderer'
/usr/bin/ld: main_doom.c:(.text+0x2072): undefined reference to `SDL_CreateTexture'
/usr/bin/ld: main_doom.c:(.text+0x209d): undefined reference to `SDL_CreateTexture'
/usr/bin/ld: main_doom.c:(.text+0x2191): undefined reference to `SDL_PollEvent'
/usr/bin/ld: main_doom.c:(.text+0x21ce): undefined reference to `SDL_GetKeyboardState'
/usr/bin/ld: main_doom.c:(.text+0x2248): undefined reference to `cos'
/usr/bin/ld: main_doom.c:(.text+0x2273): undefined reference to `sin'
/usr/bin/ld: main_doom.c:(.text+0x25b1): undefined reference to `SDL_DestroyTexture'
/usr/bin/ld: main_doom.c:(.text+0x25c0): undefined reference to `SDL_DestroyTexture'
/usr/bin/ld: main_doom.c:(.text+0x25cf): undefined reference to `SDL_DestroyRenderer'
/usr/bin/ld: main_doom.c:(.text+0x25de): undefined reference to `SDL_DestroyWindow'
collect2: error: ld returned 1 exit status

I've run out of solutions so I'm going to post this in hopes of someone having a solution.
Best Regards,
Simón "Silicosis" Peña.

Potential typo in wallshade variable?

In the DOOM-style renderer, should this statement

          const int wallshade =
                16 * (sin(atan2f(
                    wall->b.x - wall->a.x,
                    wall->b.y - wall->b.y)) + 1.0f);

be changed to this statement

          const int wallshade =
                16 * (sin(atan2f(
                    wall->b.x - wall->a.x,
                    wall->b.y - wall->a.y)) + 1.0f);

since wall->b.y - wall->b.y is zero? It makes a pretty subtle difference in the color of the walls but it stuck out to me as a possible typo when I was reading that code.

Super cool video and thanks for releasing your demo code!

Does not build on Linux

Running make all returns this:

Any ideas what's missing?

Thanks

Error compiling on macOS

rsync -a --include '/' --exclude '' "src" "bin"
/usr/local/opt/llvm/bin/clang -o bin/src/main_doom.o -MMD -c -std=c2x -O2 -g -fbracket-depth=1024 -fmacro-backtrace-limit=0 -Wall -Wextra -Wpedantic -Wfloat-equal -Wstrict-aliasing -Wswitch-default -Wformat=2 -Wno-newline-eof -Wno-unused-parameter -Wno-strict-prototypes -Wno-fixed-enum-extension -Wno-int-to-void-pointer-cast -Wno-gnu-statement-expression -Wno-gnu-compound-literal-initializer -Wno-gnu-zero-variadic-macro-arguments -Wno-gnu-empty-struct -Wno-gnu-auto-type -Wno-gnu-empty-initializer -Wno-gnu-pointer-arith -Wno-c99-extensions -Wno-c11-extensions -iquotesrc -Ilib/SDL/include src/main_doom.c
make: /usr/local/opt/llvm/bin/clang: No such file or directory
make: *** [bin/src/main_doom.o] Error 1

How do I compile using the Makefile?

Kinda confused on how to compile the source code.

Attempting to compile on Windows

Hello,
Title says it all, basically trying to use mingw to compile the code but I am getting an error.