Awesome Open Source
Awesome Open Source

Rainbow
Logo courtesy of @Tobaloidee

Language grade: C/C++ Code coverage CI

Rainbow is a scriptable, cross-platform, 2D game engine. Games can be written in both C++ and JavaScript/TypeScript. Check out the examples below.

[Documentation] Get started. It's a good place to start learning what you can do with Rainbow.

[Discussions] Get answers, or even better, share your awesome work!

[Roadmap] Find planned features and future directions (the old board can be found on Trello).

Rainbow currently runs on the following platforms:

Platform Status
Windows Windows Build Status
macOS macOS Build Status
Linux Linux Build Status
Android Android Build Status
iOS iOS Build Status
Emscripten (experimental) Emscripten Build Status

We even have a prototype that runs in your browser. Give it a try!

Examples

Label

const label = new Rainbow.Label()
  .alignment(Rainbow.TextAlignment.Center)
  .font("OpenSans-Light.ttf")
  .fontSize(60)
  .position({
    x: screenWidth * 0.5,
    y: screenHeight * 0.55
  })
  .text("Hello\nWorld");

Rainbow.RenderQueue.add(label);

Sprite Sheet Animation

const texture = new Rainbow.Texture("monkey.png");

const batch = new Rainbow.SpriteBatch(1);
batch.setTexture(texture);

const sprite = batch.createSprite(104, 149);
sprite.position({
  x: screenWidth * 0.5,
  y: screenHeight * 0.5,
});

const frames = [
  { left: 400, bottom: 724, width: 104, height: 149 },
  { left: 504, bottom: 724, width: 104, height: 149 },
  { left: 608, bottom: 724, width: 104, height: 149 },
  { left: 712, bottom: 724, width: 104, height: 149 },
  { left: 816, bottom: 724, width: 104, height: 149 },
  { left: 920, bottom: 724, width: 104, height: 149 },
];

const animation = new Rainbow.Animation(sprite, frames, 6, 0);
animation.start();

Rainbow.RenderQueue.add(batch);
Rainbow.RenderQueue.add(animation);

Structure

rainbow
├── build    # Build related files
├── doc      # Documentation
├── include  # Public Rainbow headers
├── js       # JS playground
├── lib      # Third party dependencies
├── src      # Rainbow source code
└── tools    # Build scripts, JS bindings generator, and other tools...

Contribute

Visual Studio Test Adapter for Google Test

Rainbow uses Google Test. To make Visual Studio recognize the tests, you'll need to install Test Adapter for Google Test and set the working directory in TestOptions…Test Adapter for Google Test:

  • Working directory: $(SolutionDir)

You'll also need to copy SDL2.dll into $(SolutionDir)\$(Configuration), e.g. $(SolutionDir)\Debug, because Test Adapter for Google Test doesn't honour the working directory setting when discovering tests.

Dependencies

Name Version License Required
Abseil 111ca70 Apache 2.0
cubeb 03ec1b3 ISC
Dear ImGui 1.83 MIT
Duktape 2.5.0 MIT
FreeType 2.10.1 FreeType
HarfBuzz 2.6.4 Old MIT
libpng 1.6.37 libpng v2
Mapbox Variant 1.2.0 BSD-3
NanoSVG cc6c08d zlib
Ogg Vorbis 1.3.7 BSD-3
PhysicsFS 3.0.2 zlib
SDL 2.0.12 zlib
zlib 1.2.11 zlib
Box2D 2.4.0 MIT
FMOD 1.05.x Proprietary

License

Copyright (c) 2010-present Bifrost Entertainment AS and Tommy Nguyen.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.



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