DOOM.v

DOOM translated from C to V. Builds in 0.7 seconds (x25 speed-up).

Current problems that will be fixed asap:

All comments are missing
#define consts are replaced with their values
No indentation in functions
Music works fine, but monster and weapon sounds don't

It is possible to translate files one by one and gradually replace C with V. Object files compiled with V have full binary compatibility with object files produced by C, and can be a drop-in replacement:

# Download and build DOOM
git clone https://github.com/chocolate-doom/chocolate-doom
cd chocolate-doom
cmake .
make chocolate-doom

# Build p_enemy.v and replace the object file
wget https://raw.githubusercontent.com/vlang/doom/master/p_enemy.v
v -lib translated p_enemy.v
cp p_enemy.o src/doom/CMakeFiles/doom.dir/p_enemy.c.o

# Rebuild it again with p_enemy.v.o and launch it
make chocolate-doom && src/chocolate-doom -width 640

There are several things that are allowed in translated code:

Globals
++/-- expressions and int to bool conversions (for i-- {)
Variables can be unused
Immutability is not enforced

All of these except for the globals are going to be fixed by the translator:

++/-- expressions will be replaced with statements at the right place
unused variables will be removed
mutable variables will be marked as mutable.

How to build and run this demo

Preparations (Ubuntu Linux)

Install dependencies

apt install libsdl2-dev libsdl2-mixer-dev libsdl2-net-dev

Download doom1.wad into ~/Downloads from here. (ref: External links section in this doomwiki page)

Clone, build and run the demo

git clone git@github.com:vlang/doom.git
cd doom/
./build_whole_project.sh

Name		Name	Last commit message	Last commit date
Latest commit History 124 Commits
chocolate-doom		chocolate-doom
file_by_file		file_by_file
.gitignore		.gitignore
LICENSE		LICENSE
README.md		README.md
am_map.v		am_map.v
build_whole_project.sh		build_whole_project.sh
d_items.v		d_items.v
d_main.v		d_main.v
d_net.v		d_net.v
deh_ammo.v		deh_ammo.v
deh_bexstr.v		deh_bexstr.v
deh_cheat.v		deh_cheat.v
deh_doom.v		deh_doom.v
deh_frame.v		deh_frame.v
deh_misc.v		deh_misc.v
deh_ptr.v		deh_ptr.v
deh_sound.v		deh_sound.v
deh_thing.v		deh_thing.v
deh_weapon.v		deh_weapon.v
doomdef.v		doomdef.v
doomstat.v		doomstat.v
dstrings.v		dstrings.v
f_finale.v		f_finale.v
f_wipe.v		f_wipe.v
g_game.v		g_game.v
hu_lib.v		hu_lib.v
hu_stuff.v		hu_stuff.v
info.v		info.v
m_menu.v		m_menu.v
m_random.v		m_random.v
p_ceilng.v		p_ceilng.v
p_doors.v		p_doors.v
p_enemy.v		p_enemy.v
p_floor.v		p_floor.v
p_inter.v		p_inter.v
p_lights.v		p_lights.v
p_map.v		p_map.v
p_maputl.v		p_maputl.v
p_mobj.v		p_mobj.v
p_plats.v		p_plats.v
p_pspr.v		p_pspr.v
p_saveg.v		p_saveg.v
p_setup.v		p_setup.v
p_sight.v		p_sight.v
p_spec.v		p_spec.v
p_switch.v		p_switch.v
p_telept.v		p_telept.v
p_tick.v		p_tick.v
p_user.v		p_user.v
r_bsp.v		r_bsp.v
r_data.v		r_data.v
r_draw.v		r_draw.v
r_main.v		r_main.v
r_plane.v		r_plane.v
r_segs.v		r_segs.v
r_sky.v		r_sky.v
r_things.v		r_things.v
s_sound.v		s_sound.v
sounds.v		sounds.v
st_lib.v		st_lib.v
st_stuff.v		st_stuff.v
statdump.v		statdump.v
wi_stuff.v		wi_stuff.v

License

vlang/doom

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DOOM.v

How to build and run this demo

Preparations (Ubuntu Linux)

Clone, build and run the demo

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