First commit

Author: Cacodemon345

.gitignore

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+################################################################################
+# This .gitignore file was automatically created by Microsoft(R) Visual Studio.
+################################################################################
+

LICENSE

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+================
+= doomgeneric =
+================
+
+To port DOOM easly, I made some changes to source code.
+Now, all you need to do is implement the functions in doomgeneric.h to port DOOM to a new system.
+doomgeneric_win.c is a Windows GDI port. It is also a good example for how to port doomgeneric.
+Sound is not supported for now.
+
+Original readme
+===============
+
+Here it is, at long last.  The DOOM source code is released for your
+non-profit use.  You still need real DOOM data to work with this code.
+If you don't actually own a real copy of one of the DOOMs, you should
+still be able to find them at software stores.
+
+Many thanks to Bernd Kreimeier for taking the time to clean up the
+project and make sure that it actually works.  Projects tends to rot if
+you leave it alone for a few years, and it takes effort for someone to
+deal with it again.
+
+The bad news:  this code only compiles and runs on linux.  We couldn't
+release the dos code because of a copyrighted sound library we used
+(wow, was that a mistake -- I write my own sound code now), and I
+honestly don't even know what happened to the port that microsoft did
+to windows.
+
+Still, the code is quite portable, and it should be straightforward to
+bring it up on just about any platform.
+
+I wrote this code a long, long time ago, and there are plenty of things
+that seem downright silly in retrospect (using polar coordinates for
+clipping comes to mind), but overall it should still be a usefull base
+to experiment and build on.
+
+The basic rendering concept -- horizontal and vertical lines of constant
+Z with fixed light shading per band was dead-on, but the implementation
+could be improved dramatically from the original code if it were
+revisited.  The way the rendering proceded from walls to floors to
+sprites could be collapsed into a single front-to-back walk of the bsp
+tree to collect information, then draw all the contents of a subsector
+on the way back up the tree.  It requires treating floors and ceilings
+as polygons, rather than just the gaps between walls, and it requires
+clipping sprite billboards into subsector fragments, but it would be
+The Right Thing.
+
+The movement and line of sight checking against the lines is one of the
+bigger misses that I look back on.  It is messy code that had some
+failure cases, and there was a vastly simpler (and faster) solution
+sitting in front of my face.  I used the BSP tree for rendering things,
+but I didn't realize at the time that it could also be used for
+environment testing.  Replacing the line of sight test with a bsp line
+clip would be pretty easy.  Sweeping volumes for movement gets a bit
+tougher, and touches on many of the challenges faced in quake / quake2
+with edge bevels on polyhedrons.
+
+Some project ideas:
+
+Port it to your favorite operating system.
+
+Add some rendering features -- transparency, look up / down, slopes,
+etc.
+
+Add some game features -- weapons, jumping, ducking, flying, etc.
+
+Create a packet server based internet game.
+
+Create a client / server based internet game.
+
+Do a 3D accelerated version.  On modern hardware (fast pentium + 3DFX)
+you probably wouldn't even need to be clever -- you could just draw the
+entire level and get reasonable speed.  With a touch of effort, it should
+easily lock at 60 fps (well, there are some issues with DOOM's 35 hz
+timebase...).  The biggest issues would probably be the non-power of two
+texture sizes and the walls composed of multiple textures.
+
+
+I don't have a real good guess at how many people are going to be
+playing with this, but if significant projects are undertaken, it would
+be cool to see a level of community cooperation.  I know that most early
+projects are going to be rough hacks done in isolation, but I would be
+very pleased to see a coordinated 'net release of an improved, backwards
+compatable version of DOOM on multiple platforms next year.
+
+Have fun.
+
+John Carmack
+12-23-97

README.TXT

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+# DoomGeneric NTNative
+This is a fork of ozkl's DoomGeneric which adds port to the BootExecute environment of Windows XP and later.
+
+# Requirements for building DoomGeneric NTNative
+1. Visual Studio 2017 Windows XP toolset.
+2. InbvShim (https://github.com/Cacodemon345/inbvbootdrv).
+3. Windows 7 DDK (for building InbvShim and ntdll.lib).
+
+# Requirements for running
+Only tested on Windows XP 32-bit. I don't know about later versions.
+
+# Building
+Note: Only 32-bit Debug builds are supported, anything else is broken.
+Copy over the ntdll.lib file from \\path\to\WinDDK\7600.16385.1\lib\wxp\i386\ to the doomgeneric directory inside the project. Open the solution, right click "doomgeneric_nt" and select "Build".
+
+# Building InbvShim
+From the x86/x64 Free Build Environment, cd to the directory where you have cloned InbvShim repository, and type 'build' to build the driver. You will find the inbvbootdrv.sys file in the objfre_wxp_x86 (objfre_win7_x64 if building for x64) folder.
+
+# Installing InbvShim
+Copy it to your system32\Drivers directory of your Windows installation. And then grab the inbvbootdrvinst.reg from one of the releases and double-click it to install.
+
+# Installing DoomGeneric NTNative
+Copy doomgeneric_nt.exe to C:\Windows\system32\ directory.
+There are two ways of launching it:
+1. Registry modification:
+
+**WARNING:** Backing up the registry is very important before going down this path.
+
+Open Registry Editor (regedit), go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\. Double-click BootExecute.
+
+Replace this:
+```
+autocheck autochk *
+```
+
+with:
+```
+autocheck autochk *
+doomgeneric_nt -iwad \??\C:\Windows\doom2.wad -cdrom
+```
+
+Replace \\??\C:\Windows\doom2.wad with the location where the IWAD is installed (remember to prefix it with \\??\ before the full path).
+
+Note that I don't recommend this way because it can make input non-functional, making it impossible to quit the program and requiring a hard reset.
+
+2. Native Shell (assuming you installed it beforehand):
+
+cd to the directory where DoomGeneric NTNative is installed and type:
+```
+doomgeneric_nt.exe -iwad \??\path\to\iwad.wad -cdrom
+```
+
+Replace \\path\to\ with the location where the IWAD is installed.
+
+# Extra bonuses:
+1. 16-color mode for Windows GDI port activated with -4bit option.
+
+# Bugs:
+1. Savegames are broken.
+2. Picking a weapon crashes the program (bug inherited from original DoomGeneric).
+3. It's slow as hell, probably could use FastDoom's EGA drawing code for it.
+
+# License:
+Same as original DoomGeneric, except for some files:
+
+i_main_nt.c: ReactOS project license.
+doomgeneric_nt.c: Uses code both from ZenWINX and Native Shell (LGPL).
+Bundled NDK: Used under the terms of GPLv2.

README.md

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+################################################################
+#
+# $Id:$
+#
+# $Log:$
+#
+
+VB=@
+
+
+CC=clang  # gcc or g++
+CFLAGS+=-ggdb3 -Os -I/usr/local/include
+LDFLAGS+=-Wl,--gc-sections -L/usr/local/lib
+CFLAGS+=-ggdb3 -Wall -DNORMALUNIX -DLINUX -DSNDSERV # -DUSEASM
+LIBS+=-lm -lc -lX11
+
+# subdirectory for objects
+OBJDIR=build
+OUTPUT=doomgeneric
+
+SRC_DOOM = i_main.o dummy.o am_map.o doomdef.o doomstat.o dstrings.o d_event.o d_items.o d_iwad.o d_loop.o d_main.o d_mode.o d_net.o f_finale.o f_wipe.o g_game.o hu_lib.o hu_stuff.o info.o i_cdmus.o i_endoom.o i_joystick.o i_scale.o i_sound.o i_system.o i_timer.o memio.o m_argv.o m_bbox.o m_cheat.o m_config.o m_controls.o m_fixed.o m_menu.o m_misc.o m_random.o p_ceilng.o p_doors.o p_enemy.o p_floor.o p_inter.o p_lights.o p_map.o p_maputl.o p_mobj.o p_plats.o p_pspr.o p_saveg.o p_setup.o p_sight.o p_spec.o p_switch.o p_telept.o p_tick.o p_user.o r_bsp.o r_data.o r_draw.o r_main.o r_plane.o r_segs.o r_sky.o r_things.o sha1.o sounds.o statdump.o st_lib.o st_stuff.o s_sound.o tables.o v_video.o wi_stuff.o w_checksum.o w_file.o w_main.o w_wad.o z_zone.o w_file_stdc.o i_input.o i_video.o doomgeneric.o doomgeneric_xlib.o
+OBJS += $(addprefix $(OBJDIR)/, $(SRC_DOOM))
+
+all:	 $(OUTPUT)
+
+clean:
+	rm -rf $(OBJDIR)
+	rm -f $(OUTPUT)
+	rm -f $(OUTPUT).gdb
+	rm -f $(OUTPUT).map
+
+$(OUTPUT):	$(OBJS)
+	@echo [Linking $@]
+	$(VB)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) \
+	-o $(OUTPUT) $(LIBS) -Wl,-Map,$(OUTPUT).map
+	@echo [Size]
+	-$(CROSS_COMPILE)size $(OUTPUT)
+
+$(OBJS): | $(OBJDIR)
+
+$(OBJDIR):
+	mkdir -p $(OBJDIR)
+
+$(OBJDIR)/%.o:	%.c
+	@echo [Compiling $<]
+	$(VB)$(CC) $(CFLAGS) -c $< -o $@
+
+print:
+	@echo OBJS: $(OBJS)
+

doomgeneric/Makefile.freebsd

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+################################################################
+#
+# $Id:$
+#
+# $Log:$
+#
+
+ifeq ($(V),1)
+	VB=''
+else
+	VB=@
+endif
+
+
+SDL_CFLAGS = -D_THREAD_SAFE -I/usr/include/SDL2
+SDL_LIBS =
+
+
+CC=clang  # gcc or g++
+CFLAGS+=-ggdb3 -Os $(INCLUDES) $(SDL_CFLAGS)
+LDFLAGS+=-Wl,-dead_strip
+CFLAGS+=-ggdb3 -Wall -DNORMALUNIX -DLINUX -DSNDSERV # -DUSEASM
+LIBS+=-lm -lc -lSDL2
+
+# subdirectory for objects
+OBJDIR=build
+OUTPUT=doomgeneric
+
+SRC_DOOM = i_main.o dummy.o am_map.o doomdef.o doomstat.o dstrings.o d_event.o d_items.o d_iwad.o d_loop.o d_main.o d_mode.o d_net.o f_finale.o f_wipe.o g_game.o hu_lib.o hu_stuff.o info.o i_cdmus.o i_endoom.o i_joystick.o i_scale.o i_sound.o i_system.o i_timer.o memio.o m_argv.o m_bbox.o m_cheat.o m_config.o m_controls.o m_fixed.o m_menu.o m_misc.o m_random.o p_ceilng.o p_doors.o p_enemy.o p_floor.o p_inter.o p_lights.o p_map.o p_maputl.o p_mobj.o p_plats.o p_pspr.o p_saveg.o p_setup.o p_sight.o p_spec.o p_switch.o p_telept.o p_tick.o p_user.o r_bsp.o r_data.o r_draw.o r_main.o r_plane.o r_segs.o r_sky.o r_things.o sha1.o sounds.o statdump.o st_lib.o st_stuff.o s_sound.o tables.o v_video.o wi_stuff.o w_checksum.o w_file.o w_main.o w_wad.o z_zone.o w_file_stdc.o i_input.o i_video.o doomgeneric.o doomgeneric_sdl.o
+OBJS += $(addprefix $(OBJDIR)/, $(SRC_DOOM))
+
+all:	 $(OUTPUT)
+
+clean:
+	rm -rf $(OBJDIR)
+	rm -f $(OUTPUT)
+	rm -f $(OUTPUT).gdb
+	rm -f $(OUTPUT).map
+
+$(OUTPUT):	$(OBJS)
+	@echo [Linking $@]
+	$(VB)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) \
+	-o $(OUTPUT) $(LIBS) -Wl
+	@echo [Size]
+	-$(CROSS_COMPILE)size $(OUTPUT)
+
+$(OBJS): | $(OBJDIR)
+
+$(OBJDIR):
+	mkdir -p $(OBJDIR)
+
+$(OBJDIR)/%.o:	%.c
+	@echo [Compiling $<]
+	$(VB)$(CC) $(CFLAGS) -c $< -o $@
+
+print:
+	@echo OBJS: $(OBJS)
+

doomgeneric/Makefile.sdl

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+################################################################
+#
+# $Id:$
+#
+# $Log:$
+#
+
+ifeq ($(V),1)
+	VB=''
+else
+	VB=@
+endif
+
+
+CC=soso-clang  # gcc or g++
+CFLAGS+=-O3
+LDFLAGS+=$(SOSO_ROOT)/lib/crt1.o $(SOSO_ROOT)/lib/crti.o $(SOSO_ROOT)/lib/crtn.o
+CFLAGS+=-Wall -DNORMALUNIX -DLINUX -DSNDSERV -D_DEFAULT_SOURCE # -DUSEASM
+LIBS+=-lm -lc /usr/lib/llvm-10/lib/clang/10.0.0/lib/linux/libclang_rt.builtins-i386.a
+
+# subdirectory for objects
+OBJDIR=build
+OUTPUT=fbdoom
+
+SRC_DOOM = i_main.o dummy.o am_map.o doomdef.o doomstat.o dstrings.o d_event.o d_items.o d_iwad.o d_loop.o d_main.o d_mode.o d_net.o f_finale.o f_wipe.o g_game.o hu_lib.o hu_stuff.o info.o i_cdmus.o i_endoom.o i_joystick.o i_scale.o i_sound.o i_system.o i_timer.o memio.o m_argv.o m_bbox.o m_cheat.o m_config.o m_controls.o m_fixed.o m_menu.o m_misc.o m_random.o p_ceilng.o p_doors.o p_enemy.o p_floor.o p_inter.o p_lights.o p_map.o p_maputl.o p_mobj.o p_plats.o p_pspr.o p_saveg.o p_setup.o p_sight.o p_spec.o p_switch.o p_telept.o p_tick.o p_user.o r_bsp.o r_data.o r_draw.o r_main.o r_plane.o r_segs.o r_sky.o r_things.o sha1.o sounds.o statdump.o st_lib.o st_stuff.o s_sound.o tables.o v_video.o wi_stuff.o w_checksum.o w_file.o w_main.o w_wad.o z_zone.o w_file_stdc.o i_input.o i_video.o doomgeneric.o doomgeneric_soso.o
+OBJS += $(addprefix $(OBJDIR)/, $(SRC_DOOM))
+
+all:	 $(OUTPUT)
+
+clean:
+	rm -rf $(OBJDIR)
+	rm -f $(OUTPUT)
+	rm -f $(OUTPUT).gdb
+	rm -f $(OUTPUT).map
+
+$(OUTPUT):	$(OBJS)
+	@echo [Linking $@]
+	i386-soso-ld -v $(LDFLAGS) $(OBJS) -o $(OUTPUT) $(LIBS)
+	@echo [Size]
+	-$(CROSS_COMPILE)size $(OUTPUT)
+	cp $(OUTPUT) ~/git/soso/userspace/bin/
+
+$(OBJS): | $(OBJDIR)
+
+$(OBJDIR):
+	mkdir -p $(OBJDIR)
+
+$(OBJDIR)/%.o:	%.c
+	@echo [Compiling $<]
+	$(VB)$(CC) $(CFLAGS) -c $< -o $@
+
+print:
+	@echo OBJS: $(OBJS)
+

doomgeneric/Makefile.soso

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+################################################################
+#
+# $Id:$
+#
+# $Log:$
+#
+
+ifeq ($(V),1)
+	VB=''
+else
+	VB=@
+endif
+
+
+CC=soso-clang  # gcc or g++
+CFLAGS+=-O3
+LDFLAGS+=$(SOSO_ROOT)/lib/crt1.o $(SOSO_ROOT)/lib/crti.o $(SOSO_ROOT)/lib/crtn.o
+CFLAGS+=-I$(SOSO_ROOT)/include/nano-x -Wall -DNORMALUNIX -DLINUX -DSNDSERV -D_DEFAULT_SOURCE # -DUSEASM
+LIBS+=-lnano-X -lm -lc /usr/lib/llvm-10/lib/clang/10.0.0/lib/linux/libclang_rt.builtins-i386.a
+
+# subdirectory for objects
+OBJDIR=build
+OUTPUT=doom
+
+SRC_DOOM = i_main.o dummy.o am_map.o doomdef.o doomstat.o dstrings.o d_event.o d_items.o d_iwad.o d_loop.o d_main.o d_mode.o d_net.o f_finale.o f_wipe.o g_game.o hu_lib.o hu_stuff.o info.o i_cdmus.o i_endoom.o i_joystick.o i_scale.o i_sound.o i_system.o i_timer.o memio.o m_argv.o m_bbox.o m_cheat.o m_config.o m_controls.o m_fixed.o m_menu.o m_misc.o m_random.o p_ceilng.o p_doors.o p_enemy.o p_floor.o p_inter.o p_lights.o p_map.o p_maputl.o p_mobj.o p_plats.o p_pspr.o p_saveg.o p_setup.o p_sight.o p_spec.o p_switch.o p_telept.o p_tick.o p_user.o r_bsp.o r_data.o r_draw.o r_main.o r_plane.o r_segs.o r_sky.o r_things.o sha1.o sounds.o statdump.o st_lib.o st_stuff.o s_sound.o tables.o v_video.o wi_stuff.o w_checksum.o w_file.o w_main.o w_wad.o z_zone.o w_file_stdc.o i_input.o i_video.o doomgeneric.o doomgeneric_sosox.o
+OBJS += $(addprefix $(OBJDIR)/, $(SRC_DOOM))
+
+all:	 $(OUTPUT)
+
+clean:
+	rm -rf $(OBJDIR)
+	rm -f $(OUTPUT)
+	rm -f $(OUTPUT).gdb
+	rm -f $(OUTPUT).map
+
+$(OUTPUT):	$(OBJS)
+	@echo [Linking $@]
+	i386-soso-ld -v $(LDFLAGS) $(OBJS) -o $(OUTPUT) $(LIBS)
+	@echo [Size]
+	-$(CROSS_COMPILE)size $(OUTPUT)
+	cp $(OUTPUT) ~/git/soso/userspace/bin/
+
+$(OBJS): | $(OBJDIR)
+
+$(OBJDIR):
+	mkdir -p $(OBJDIR)
+
+$(OBJDIR)/%.o:	%.c
+	@echo [Compiling $<]
+	$(VB)$(CC) $(CFLAGS) -c $< -o $@
+
+print:
+	@echo OBJS: $(OBJS)
+