Duke Nukem 3D on the New Nintendo 3DS, ported from the 2003 GPL source release.
- Runs at the top screen's native 400x240 — no scaling, and a wider field of view than the original 320x200.
- Touch screen is a weapon and status panel: health, armour, ammo, and a grid you tap to switch weapons.
- Circle pad, C-stick and the full button set, all through the game's own keybindings, so the in-game options menu still works.
- Stereoscopic 3D, driven by the console's slider
- Ships with the v1.3D shareware episode. A registered 1.5/Atomic
DUKE3D.GRPdropped in the same directory is picked up automatically.
Put all of the files from the release page on the root of your sd card,
install dn3ds.cia with your CIA installer of choice. I'll eventually put
this on universal updater
| Button | In game | In menus |
|---|---|---|
| Circle pad | move / strafe (analog) | navigate |
| D-pad | turn, look up/down | navigate |
| C-stick | next / previous weapon, aim up/down | — |
| A / B | open, use · jump | select · back |
| X / Y | crouch · use inventory | — |
| ZR / R | fire | — |
| ZL | run | — |
| L | previous weapon | — |
| START / SELECT | menu · overhead map | back |
| Touch | tap a box to select that weapon | — |
Nothing here is hardcoded into the game logic: the 3DS pad drives
KB_KeyDown[], which is what ACTION() and the menus already read, so
rebinding in Options still does what you expect.
Needs devkitPro with devkitARM, libctru, citro3d and 3ds-sdl:
sudo pacman -S dkp-libs/3ds-sdl
git submodule update --init
tools/import.sh # populate source/ from the submodules
tools/patch_sdl.py # build the stereo-capable libSDL into vendor/sdl12-3ds/lib
make # dn3ds.3dsx
make cia # also dn3ds.cia (needs bannertool + makerom from the AUR)tools/make_assets.py # regenerate icon/banner/banner audio from the GRPThe portable C layer comes from
chocolate_duke3D, a
faithful translation of this same v1.5 source — draw.c for A.ASM,
fixedPoint_math.c for PRAGMAS.H, control.c and keyboard.c for the
missing MACT. That it really is the same code is checked rather than assumed:
tools/verify_provenance.sh compares every game file against
vendor/dukenukem3d and reports 92–99% symbol overlap.
Everything 3DS-specific is in source/n3ds/:
platform_n3ds.c |
pre-main setup: game directory, log redirection, args.txt |
input_n3ds.c |
pad and stick → KB_KeyDown[] and ControlInfo |
bottom_n3ds.c |
the touch panel |
dsl_n3ds.c |
audiolib's output driver, over SDL audio onto NDSP |
stereo_n3ds.c |
the right-eye render pass |
stubs_n3ds.c |
netplay and music, deliberately inert |
n3ds_compat.h |
the newlib/POSIX shims |
- No music. MIDI needs a synth on the ARM11, which is its own project.
MUSIC_*is stubbed. - No multiplayer.
mmultiis not built; the netplay entry points are inert stubs.
Driven by the console's 3D slider. At zero the second render pass is skipped entirely, the driver drops back to mono and frees its right-eye target, and the game costs exactly what it did before. Eye separation is 96 Build units at full slider — a doorway is on the order of 1024 units, so if that is roughly a metre then real 65mm separation is about 66 units, and this sits a little above life size bc i liked how it looked better that way :3
The engine and game code are GPLv2, per the 2003 release — see GNU.TXT in
vendor/dukenukem3d. The port layer in source/n3ds/ is GPLv2 to match.
gamedata/ contains the Duke Nukem 3D v1.3D shareware episode. "Duke
Nukem" is a registered trademark of Apogee Software, Ltd.; the data files are
copyright 3D Realms and are not covered by the GPL. They are included here
under the shareware distribution terms. The icon and banner are generated from
tiles in that data by tools/make_assets.py.
- devkitARM / libctru and SDL 1.2 for 3DS
- chocolate_duke3D by Fabien Sanglard, for the C translation of the assembly and MACT layers
- Ken Silverman's Build engine, and 3D Realms for releasing the source (You guys are awesome!)