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<h1 align="center"><a href="https://bit.ly/fwk2023">F·W·K</a></h1>
<p align="center">
3D game engine/framework in C, with Luajit and Python bindings now.<br/>
</p>
<p align="center">
<img src="https://i.imgur.com/sInbRoA.gif"/><br/>
</p>
## Goals
- [x] ~~Full featured~~, ~~Fast~~, ~~Modern C++~~. Small, Naive, Simple C.
- [x] ~~Rich build system~~, ~~Royaltie fee~~. Single file, Freely unlicensed.
## Features ᕦ(ᐛ)ᕤ
- [x] Pipeline: configurable and integrated [asset pipeline](tools/cook.ini).
- [x] Embedded: [single-file header](engine/joint/fwk.h), all dependencies included.
- [x] Compiler: MSVC, MINGW64, TCC, GCC, clang, clang-cl and emscripten.
- [x] Linkage: Both static linkage and dynamic .dll/.so/.dylib support.
- [x] Platform: Windows, Linux and OSX. Partial HTML5/Web support.
- [x] DS: hash, sort, array/vector, map, set.
- [x] Math: rand, noise, ease, vec2/3/4, mat33/34/44, quat.
- [x] Geometry: ray, line, plane, aabb, sphere, capsule, triangle, poly and frustum.
- [x] Window: windowed, soft/hard fullscreen, msaa, icon, cursor handling.
- [x] Input: keyboard, mouse and gamepads.
- [x] Script: Lua scripting, Luajit bindings.
- [x] Network: downloads (HTTPS) and sockets (TCP/UDP). <!-- [*] Object, GameObject, W/ECS -->
- [x] AI: Swarm/Boids.
- [x] UI: button, list, slider, toggle, checkbox, editbox, dialog, color, image, menu, window, notify...
- [x] Font: TTF, OTF and TTC. Basic syntax highlighter. Glyph ranges. Atlasing.
- [x] Localization/I18N: XLSX and INI. Unicode.
- [x] Image: JPG, PNG, BMP, PSD, PIC, PNM, ICO.
- [x] Texture: KTX/2, PVR, DDS, ASTC, BASIS, HDR, TGA.
- [x] Texel: Depth, R, RG, RGB, RGBA, BC1/2/3/4/5/6/7, PVRI/II, ETC1/2, ASTC.
- [x] Audio: WAV/FLAC, OGG/MP1/MP3, FUR, MOD/XM/S3M/IT, SFXR and MID+SF2/SF3.
- [x] Video: MP4, MPG, OGV, MKV, WMV and AVI. Also, MP4 recording with MPEG-1 fallback.
- [x] Model: IQM/E, GLTF/2, GLB, FBX, OBJ, DAE, BLEND, MD3/5, MS3D, SMD, X, 3DS, BVH, DXF, LWO.
- [x] Render: PBR (metallic-roughness) workflow. <!-- @todo: merge demo_pbr.c rendering code into fwk_render.c -->
- [x] Render: Cubemaps, panoramas and spherical harmonics. Rayleigh/Mie scattering.
- [x] Render: Post-effects (SSAO,FXAA1/3,CRT,Contrast,Grain,Outline,Vignette...).
- [x] Render: 3D Anims, skeletal anims, hardware skinning and instanced rendering.
- [x] Render: 3D Debugdraw, batching and vectorial font.
- [x] Render: 2D Sprites, spritesheets, AA zooming and batching.
- [x] Render: 2D Tilemaps and tilesets: TMX, TSX.
- [x] Compression: DEFLATE, LZMA, LZ4, ULZ, BALZ, BCM, CRUSH, LZW3, LZSS and PPP.
- [x] Virtual filesystem: ZIP, PAK, TAR and DIR.
- [x] Level data: JSON, JSON5, SJSON, XML, INI.
- [x] Disk cache.
- [x] Scene handling.
- [x] Profiler, stats and leaks finder.
- [x] [Editor (wip)](https://user-images.githubusercontent.com/35402248/174457347-f787a6a2-aac8-404c-a5da-f44310c3d432.mp4).
- [x] [Documentation (wip)](https://bit.ly/fwk2023).
## Roadmap ᕕ(ᐛ)ᕗ (in order of arrival; ✱: partial support)
- [ ] AI pass: actors, waypoints, pathfinding, behavior trees (h/fsm,goap), and navmesh generation.
- [ ] Network/VM pass: Entity/component/systems and worlds. <!-- W/ECS, gameobj, serialization:load/save/merge, diff/patch ;; dead reckoning, interpolation, extrapolation, bandwidth budgets -->
- [ ] Core pass: struct serialization.
- [ ] Message pipeline and replication. <!-- manual/replication channels, node sharding/clustering. -->
- [ ] Digital signals, message buffering and event polling.
- [ ] World streaming and level loading.
- [ ] Scenegraphs and spatial partioning. BVH, PVS, occluders, frustum culling.
- [ ] Server/client architecture. Hybrid P2P.
- [ ] NAT traversal. Socketless API, message API and pub/sub wrappers (enet/websocket).
- [ ] Editor pass = netbased + offline rendering + virtual input.
- [ ] Basic: Gizmos✱, scene tree, property editor✱, load/save✱, undo/redo✱, copy/paste, on/off (vis,tick,ddraw,log), vcs.
- [ ] Scenenode: node singleton display, node console, node labels, node outlines✱.<!-- node == gameobj ? -->
- [ ] Debug: toggles on/off (billboards✱, materials, un/lit, cast shadows, wireframe, skybox✱/mie✱, fog/atmosphere, collide✱, physics).
- [ ] Level: volumes, triggers, platforms, level streaming.
- [ ] Sub-editor: timeline and data tracks, node graphs. <!-- worthy: will be reused into materials, animgraphs and blueprints -->
- [ ] Sub-editor: Procedural content, brushes, noise and CSG.
- [ ] Sub-editor: blendshapes, additive anims, head/foot/hand IKs.
- [ ] Script pass: DLL✱ (module->plugin/sys), Lua✱, Luajit✱, Teal✱ and TypeScript.
- [ ] Render pass: reverse-Z, automatic LODs, impostors, decals.
- [ ] Materials: (colors✱, textures✱, matcaps✱, videos✱, shadertoys✱). Shadertoys as post-fx✱. <!--materials as postfx, as they have an update() method -->
- [ ] Lighting: Hard/soft shadow mapping (VSM,CCSM). Baked lightmaps. Refl probes. Integrated PBR.
- [ ] Tools pass
- [ ] Extend shaders + bindings. Per-platform✱, per-type✱, per-asset options. GIF, PKM.
- [ ] Extend atlas (sprite/lightmaps). Fit packing (sprites).
- [ ] Extend bindings and messaging: parse C headers during cooking stage. <!-- msgs,docs,refl,meta,lua -- (*.c, *.h) as .proto/.pbc maybe, free reflection+automatic bindings -->
- [ ] API pass
- [ ] Extend math: quat2, bezier, catmull.
- [ ] Discuss API and freeze it.
- [ ] Document everything.
<!--
Nice to have/extend (engine dependant):
- Animation pass: playlists, additive, blend/shapes, ik/bones, animgraph/controllers.
// 6) anims, I (playlist: ~~forward/backwards/loop/rewind)~~, II (~~blend~~/shapes), III (ik/bone), IV (graph/controller)
// ~~blend anims~~, animtracks+animevents, additive anims,
// fwk_data: quantization: ~~half, quant, microfloat~~.
// anim; ~~keyframes[] { frame+delay,frame+delay,... }, anim duration, anim flip,~~
// anim tracks / anim events
- Audio pass: 3D audio, HRTF, FFT, filtering and sound occlusion.
- Design pass: Dialogue, quests and inventory.
- Design pass: Input gestures and combos.
- Design pass: Integrated cinematics QTE.
- Design pass: Scripting, bindings and game modules.
- Design pass: Scripting: DLL (module->plugin/sys), Lua, Luajit, Teal and TypeScript.
- FX pass: Particles, billboards, emitters, trails and paths.
- Tools pass: Asset journaling.
// expose uniforms as ui options, also model_uniform();
// Pipeline: Extend asset pipeline (shaders, bindings, xml). Asset options.
// cook: slang: hlsl2glsl (XShaderCompiler), hlsl2spirv (dxc), spirv2many (spirv-cross), glsl2many (sokol-shdc)
// cook: tlfx22json
- Render pass: Frustum culling.
- Render pass: FX: particles and emitters (TLFX2), kawaii physics, clothes, breakables.
- Render pass: Lighting: hard/soft shadow mapping, spotlights (VSM), omnilights (VSMCube), CSM and baked lightmaps.
// lightmaps: https://blackpawn.com/texts/lightmaps/default.html
// https://github.com/jpcy/xatlas
- Render pass: Material: colors, textures, matcaps, videos, shadertoys. Shadertoys as post-fx.
- Render pass: Render: LODs, object instancing, billboards, impostors, decals, reflection probes.
// lod: https://github.com/songrun/SeamAwareDecimater
- Render pass: Skydomes.
- Render pass: Voxels
- Render pass: VR.
- Script pass: Refl/Meta binding tool (during cook stage).
- System pass: Buffer encryption.
- System pass: Mobile iOS/Android, HTML5✱, Web/WASM, RaspberryPi.
- Social pass: Achievements, Scores, Rankings, Friends, Invites, Steam/Itchio 1st-party store integrations, etc.
- UI pass: HUD, UI Widgets, touch input, touch gestures.
- UI pass: Font text layout and shaping, underlining, soft/hard shadows, outlines.
// font: M/SDF https://github.com/WilliamBundy/wiggle https://github.com/Chlumsky/msdf-atlas-gen
- UI pass: Game flow and game UI.
- UI pass: Localization, subtitles and unicode.
Engine types:
- 2DY Pong (70)
- 2DXY Platformer (80) (dizzy, rick dangerous) screens
- 2DXY+ Platformer (80) (megaman) scroll
- 2DXY Arcade (80) (snowbros, bomberman) screens
- 2DXZ Racing (outrun)
- 2DXYZ Isometric adventure (knight lore, diablo)
- AGI (maniac)
- First person shooter (80-90) (wolf3d > doom > hl1)
- First person adventure (bloodwych)
- Text adventure (z)
Nice to have:
- [ ] fix leaks and todos
- [ ] fwk_app: cpu usage, orientation
- [ ] fwk_input: mouse clip, mouse wrap,
- [ ] zip0 seek-vfs optimization. zip_append_file is suboptimal, and requires tons of contiguous memory for giant files.
Almost done:
- [x] shadertoy textures
- [*] billboards (follow sprite API? state instead? ie, billboard(true); before rendering?)
- Docs pass: API, functions, samples, examples, pipeline.
// plan:
//[ ] cam: friction, projections (dimetric, isometric, ...)
//[ ] Render: Materials (textures, matcaps, videos, shadertoys).
// material: fixed color, texture or script that returns color
// animated textures (shadertoys, videos)
// 8) vm/ecs core + engines: custom frontends & backends
// vm: ram, workqueues, threading, priorities, load/save
// service protocols: websocket bqqbarbhg/bq_websocket, https, handshake
// databases, services, quotas, black/whitelists, etc
// 7) network replication & messaging
// network: replication, dead reckoning, interpolation, extrapolation, bandwidth
// network: messaging: un/reliable, fragmentation, priority, etc
// network: topologies: bus, star, p2p, pubsub, etc
// network: filesystem
// int send_game_state(void *ptr, int len, int flags); PROTOCOL_V1|QUANTIZE|COMPRESS|RLE
// int recv_game_state(); compensate, extrapolate, intrapolate(); lerp();
// 9) render+
// 2d: billboards
// IBL/materials (from Foxotron+sgorsten) + shading models
// lightmapping/xatlas (demos), reflection probes
// renderbuckets
// tessellation
// 2d: particles (tlfx2)
// reverse-z {
// fbo attach format D16_UNORM -> D32_SFLOAT
// pipeline depth compare LEQUAL -> GEQUAL
// pipeline depth clear 1.0 -> 0.0
// proj matrix: float a = zfar / (zfar - znear); -> float a = -znear / (zfar - znear);
// proj matrix: float b = (-znear * zfar) / (zfar - znear); -> float b = (znear * zfar) / (zfar - znear);
// }
-->
## Hello FWK
```C
#include "fwk.h" // Minimal C sample
int main() {
window_create(75.0, 0); // 75% size, no extra flags
while( window_swap() && !input(KEY_ESC) ) { // game loop
puts("hello FWK from C!");
}
}
```
```lua
local fwk = require("fwk") -- Minimal Lua sample
fwk.window_create(75.0,0) -- 75% size, no extra flags
while fwk.window_swap() and fwk.input(fwk.KEY_ESC) == 0 do -- game loop
print("hello FWK from Lua!")
end
```
## Quickstart
- Double-click `MAKE.bat` (Win) or `sh MAKE.bat` (Linux/OSX) to compile everything.
- `MAKE.bat sln` (Win) or `sh MAKE.bat sln` (Linux/OSX) to generate solutions/makefiles.
- `MAKE.bat help` (Win) or `sh MAKE.bat help` (Linux/OSX) for a bunch of options.
- `MAKE.bat hello.c` (Win) or `sh MAKE.bat hello.c` (Linux/OSX) to build a single executable.
- Alternatively,
```bat
echo win/vc && cl hello.c
echo win/clang-cl && clang-cl hello.c
echo win/tcc && tools\tcc hello.c -m64
echo win/mingw && gcc hello.c -lws2_32 -lwinmm -ldbghelp -lole32 -luser32 -lgdi32 -lcomdlg32
echo win/clang && clang hello.c -lws2_32 -lwinmm -ldbghelp -lole32 -luser32 -lgdi32 -lcomdlg32
echo linux && cc hello.c -lm -ldl -lpthread -lX11
echo linux/tcc && tcc hello.c -lm -ldl -lpthread -lX11 -D__STDC_NO_VLA__
echo osx && cc -ObjC hello.c -framework cocoa -framework iokit -framework audiotoolbox
```
## Cook
- Assets need to be cooked before being consumed in your application. The [tools/](tools/) folder contains all the related binaries to perform any asset processing plus the [cookbook](tools/cook.ini) to do so.
- Your game will cook all your assets as long as the [`tools/`](tools/) folder is next to your executable. Alternatively, cook them all just by invoking supplied [`tools/cook` standalone binary](tools/).
- In both cases, assets will be cooked and packed into .zipfiles next to your executable, then mounted before entering game loop. These .zipfiles plus your executable are the only required files when releasing your game.
## Extra tips
- Any ico/png file named after the executable name will be automatically used as app icon.
- Similar to the ico/png case above, the cooked .zipfiles can be named after the main executable as well.
- Dropped files into game window will be imported & saved into [`import/`](engine/art/import/) folder.
- Update the gamepad controller database by upgrading the [`gamecontrollerdb.txt`](engine/art/input/) file.
- Depending on your IDE, you might need to browse to [`engine/split/`](engine/split/) sources when debugging FWK.
- Cook assets on demand, as opposed to cook all existing assets on depot, by using `--cook-on-demand` flag.
- Linux/OSX users can optionally install wine and use the Windows tools instead (by using `--cook-wine` flag).
- Disable automatic cooking by using `--cook-jobs=0` flag (not recommended).
- Generate a project solution by dropping `engine/fwk.h, fwk.c and fwk` files into it.
- Auto-generated Luajit and Python bindings can be found in the [`engine/bind/`](engine/bind/) folder.
<!-- - On windows + vc, you can use `make bindings` or `make docs` to generate everything prior to a release -->
<!-- - Note: Windows: Assimp.dll may need [this package installed](https://www.microsoft.com/en-us/download/confirmation.aspx?id=30679).-->
## Credits
**Artwork**
[Dean Evans, Raijin](https://youtu.be/RRvYkrrpMKo?t=147 "for the Map song (c)"),
[Nuulbee](https://sketchfab.com/3d-models/kgirls01-d2f946f58a8040ae993cda70c97b302c "for kgirls01 3D model (CC BY-NC-ND 4.0)"),
[Rotting Pixels](https://opengameart.org/content/2d-castle-platformer-tileset-16x16 "for castle-tileset (CC0)"),
[Tom Lewandowski](https://QuestStudios.com "for his MIDI recordings (c)"),
[Rye Terrell](https://github.com/wwwtyro/glsl-atmosphere "for nicest rayleigh/mie scattering shader around (CC0)"),
**Tools**
[Aaron Barany](https://github.com/akb825/Cuttlefish "for cuttlefish (APACHE2)"),
[Arseny Kapoulkine](https://github.com/zeux/pugixml/ "for pugixml (MIT)"),
[Assimp authors](https://github.com/assimp/assimp "for assimp (BSD3)"),
[Bernhard Schelling](https://github.com/schellingb/TinySoundFont "for tml.h (Zlib) and tsf.h (MIT)"),
[Christian Collins](http://www.schristiancollins.com "for GeneralUser GS soundfont (PD)"),
[FFMPEG authors](https://www.ffmpeg.org/ "for ffmpeg (LGPL21)"),
[Imagination](https://developer.imaginationtech.com/pvrtextool/ "for pvrtextoolcli (ITL)"),
[Krzysztof Gabis](https://github.com/kgabis/ape "for split.py/join.py (MIT)"),
[Lee Salzman](https://github.com/lsalzman/iqm/tree/5882b8c32fa622eba3861a621bb715d693573420/demo "for iqm.cpp (PD)"),
[Martín Lucas Golini](https://github.com/SpartanJ/eepp/commit/8552941da19380d7a629c4da80a976aec5d39e5c "for emscripten-fs.html (CC0)"),
[Mattias Gustavsson](https://github.com/mattiasgustavsson/libs "for mid.h (PD)"),
[Michael Schmoock](http://github.com/willsteel/lcpp "for lcpp (MIT)"),
[Morgan McGuire](https://casual-effects.com/markdeep/ "for markdeep (BSD2)"),
[Olivier Lapicque, Konstanty Bialkowski](https://github.com/Konstanty/libmodplug "for libmodplug (PD)"),
[Polyglot Team](https://docs.google.com/spreadsheets/d/17f0dQawb-s_Fd7DHgmVvJoEGDMH_yoSd8EYigrb0zmM/edit "for polyglot gamedev (CC0)"),
[Tildearrow](https://github.com/tildearrow/furnace/ "for Furnace (GPL2)"),
[Tomas Pettersson](http://www.drpetter.se/ "for sfxr (PD)"),
[Tor Andersson](https://github.com/ccxvii/asstools "for assiqe.c (BSD)"),
**Runtime**
[Andreas Mantler](https://github.com/ands "for their math library (PD)"),
[Barerose](https://github.com/barerose "for swrap (CC0) and math library (CC0)"),
[Camilla Löwy](https://github.com/elmindreda "for glfw3 (Zlib)"),
[Dave Rand](https://tools.ietf.org/html/rfc1978 "for ppp (PD)"),
[David Herberth](https://github.com/dav1dde/ "for glad generated code (PD)"),
[David Reid](https://github.com/mackron "for miniaudio (PD)"),
[Dominic Szablewski](https://github.com/phoboslab/pl_mpeg "for pl_mpeg (MIT)"),
[Dominik Madarász](https://github.com/zaklaus "for json5 parser (PD)"),
[Eduard Suica](https://github.com/eduardsui/tlse "for tlse (PD)"),
[Evan Wallace](https://github.com/evanw "for their math library (CC0)"),
[Gargaj+cce/Peisik](https://github.com/gargaj/foxotron "for Foxotron/PBR shaders (UNLICENSE)"),
[Guilherme Lampert](https://github.com/glampert "for their math library (PD)"),
[Guillaume Vareille](http://tinyfiledialogs.sourceforge.net "for tinyfiledialogs (ZLIB)"),
[Haruhiko Okumura](https://oku.edu.mie-u.ac.jp/~okumura/compression/ "for lzss (PD)"),
[Igor Pavlov](https://www.7-zip.org/ "for LZMA (PD)"),
[Ilya Muravyov](https://github.com/encode84 "for bcm, balz, crush, ulz, lz4x (PD)"),
[Jon Olick](https://www.jonolick.com/ "for jo_mp1 and jo_mpeg (PD)"),
[Joonas Pihlajamaa](https://github.com/jokkebk/JUnzip "for JUnzip library (PD)"),
[Juliette Focault](https://github.com/juliettef/IconFontCppHeaders/blob/main/IconsMaterialDesign.h "for the generated MD header (ZLIB)"),
[Kristoffer Grönlund](https://github.com/krig "for their math library (CC0)"),
[Lee Salzman](https://github.com/lsalzman/iqm/tree/5882b8c32fa622eba3861a621bb715d693573420/demo "for IQM spec & player (PD)"),
[Lee Salzman, V.Hrytsenko, D.Madarász](https://github.com/zpl-c/enet/ "for enet (MIT)"),
[Libtomcrypt](https://github.com/libtom/libtomcrypt "for libtomcrypt (Unlicense)"),
[Lua authors](https://www.lua.org/ "for Lua language (MIT)"),
[Mattias Gustavsson](https://github.com/mattiasgustavsson/libs "for thread.h and https.h (PD)"),
[Micha Mettke](https://github.com/vurtun "for their math library (PD)"),
[Micha Mettke, Chris Willcocks, Dmitry Hrabrov](https://github.com/vurtun/nuklear "for nuklear (PD)"),
[Michael Galetzka](https://github.com/Cultrarius/Swarmz "for swarmz (UNLICENSE)"),
[Morten Vassvik](https://github.com/vassvik/mv_easy_font "for mv_easy_font (Unlicense)"),
[Mārtiņš Možeiko](https://gist.github.com/mmozeiko/68f0a8459ef2f98bcd879158011cc275 "for A* pathfinding (PD)"),
[Omar Cornut, vaiorabbit](https://github.com/ocornut/imgui/pull/3627 "for tables of unicode ranges (MIT-0)"),
[Rabia Alhaffar](https://github.com/Rabios/ice_libs "for ice_batt.h (PD)"),
[Rich Geldreich](https://github.com/richgel999/miniz "for miniz (PD)"),
[Ross Williams](http://ross.net/compression/lzrw3a.html "for lzrw3a (PD)"),
[Samuli Raivio](https://github.com/bqqbarbhg/bq_websocket "for bq_websocket (PD)"),
[Sean Barrett](https://github.com/nothings "for stb_image, stb_image_write, stb_sprintf, stb_truetype and stb_vorbis (PD)"),
[Sebastian Steinhauer](https://github.com/kieselsteini "for sts_mixer (PD)"),
[Stan Melax, Cloud Wu](https://web.archive.org/web/20031204035320/http://www.melax.com/polychop/gdmag.pdf "for polychop C algorithm (PD)"),
[Stefan Gustavson](https://github.com/stegu/perlin-noise "for simplex noise (PD)"),
[Sterling Orsten](https://github.com/sgorsten "for their math library (UNLICENSE)"),
[Tor Andersson](https://github.com/ccxvii/minilibs "for xml.c (PD)"),
[Wolfgang Draxinger](https://github.com/datenwolf "for their math library (WTFPL2)"),
<!--
- [DavidLam](https://en.wikipedia.org/wiki/Tokamak_(software) "for tokamak physics engine (ZLIB)")
- [FMS_Cat](https://gist.github.com/FMS-Cat/a1ccea3ce866c34706084e3526204f4f "for nicest VHS/VCR shader around (MIT)")
- [Goblin165cm](https://sketchfab.com/3d-models/halloween-little-witch-ccc023590bfb4789af9322864e42d1ab "for witch 3D model (CC BY 4.0)")
- [ID Software, David St-Louis](https://github.com/Daivuk/PureDOOM "for PureDOOM (Doom License)")
- [Miloslav Číž](https://codeberg.org/drummyfish/Anarch "for Anarch (CC0)")
- [Quaternius](https://www.patreon.com/quaternius "for the lovely 3D robots (CC0)")
- [Rxi](https://github.com/rxi/autobatch "for lovely sprites & cats demo (MIT)")
-->
## Unlicense
This software is released into the [public domain](https://unlicense.org/). Also dual-licensed as [0-BSD](https://opensource.org/licenses/0BSD) or [MIT (No Attribution)](https://github.com/aws/mit-0) for those countries where public domain is a concern (sigh). Any contribution to this repository is implicitly subjected to the same release conditions aforementioned.
## Links
Still looking for alternatives? [amulet](https://github.com/ianmaclarty/amulet), [aroma](https://github.com/leafo/aroma/), [astera](https://github.com/tek256/astera), [blendelf](https://github.com/jesterKing/BlendELF), [bullordengine](https://github.com/MarilynDafa/Bulllord-Engine), [candle](https://github.com/EvilPudding/candle), [cave](https://github.com/kieselsteini/cave), [chickpea](https://github.com/ivansafrin/chickpea), [corange](https://github.com/orangeduck/Corange), [cute](https://github.com/RandyGaul/cute_framework), [dos-like](https://github.com/mattiasgustavsson/dos-like), [ejoy2d](https://github.com/ejoy/ejoy2d), [exengine](https://github.com/exezin/exengine), [gunslinger](https://github.com/MrFrenik/gunslinger), [hate](https://github.com/excessive/hate), [island](https://github.com/island-org/island), [juno](https://github.com/rxi/juno), [l](https://github.com/Lyatus/L), [lgf](https://github.com/Planimeter/lgf), [limbus](https://github.com/redien/limbus), [love](https://github.com/love2d/love/), [lovr](https://github.com/bjornbytes/lovr), [mini3d](https://github.com/mini3d/mini3d), [mintaro](https://github.com/mackron/mintaro), [mio](https://github.com/ccxvii/mio), [olive.c](https://github.com/tsoding/olive.c), [opensource](https://github.com/w23/OpenSource), [ouzel](https://github.com/elnormous/ouzel/), [pez](https://github.com/prideout/pez), [pixie](https://github.com/mattiasgustavsson/pixie), [punity](https://github.com/martincohen/Punity), [r96](https://github.com/badlogic/r96), [ricotech](https://github.com/dbechrd/RicoTech), [rizz](https://github.com/septag/rizz), [tigr](https://github.com/erkkah/tigr), [yourgamelib](https://github.com/duddel/yourgamelib)
<a href="https://github.com/r-lyeh/FWK/issues"><img alt="Issues" src="https://img.shields.io/github/issues-raw/r-lyeh/FWK.svg"/></a> <a href="https://discord.gg/vu6Vt9d"><img alt="Discord" src="https://img.shields.io/discord/270565488365535232?color=5865F2&label=chat&logo=discord&logoColor=white"/></a>
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