engine

by playcanvas

playcanvas / engine

Fast and lightweight JavaScript game engine built on WebGL and glTF

5.8K Stars 946 Forks Last release: 22 days ago (v1.35.1) MIT License 8.8K Commits 703 Releases

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PlayCanvas WebGL Game Engine

PlayCanvas is an open-source game engine. It uses HTML5 and WebGL to run games and other interactive 3D content in any mobile or desktop browser.

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English ไธญๆ–‡

Project Showcase

Many games and apps have been published using the PlayCanvas engine. Here is a small selection:

Seemore After The Flood Casino
Swooop Master Archer Flappy Bird
Car Star-Lord Global Illumination

You can see more games on the PlayCanvas website.

Users

PlayCanvas is used by leading companies in video games, advertising and visualization such as:
Animech, Arm, Disney, Facebook, IGT, King, Miniclip, Leapfrog, Mozilla, Nickelodeon, Nordeus, PikPok, PlaySide Studios, Polaris, Product Madness, Samsung, Snap, Spry Fox, Zeptolab, Zynga

Features

PlayCanvas is a fully featured game engine.

  • ๐ŸงŠ Graphics - Advanced 2D + 3D graphics engine built on WebGL 1 & 2.
  • ๐Ÿƒ Animation - Powerful state-based animations for characters and arbitrary scene properties
  • โš›๏ธ Physics - Full integration with 3D rigid-body physics engine ammo.js
  • ๐ŸŽฎ Input - Mouse, keyboard, touch, gamepad and VR controller APIs
  • ๐Ÿ”Š Sound - 3D positional sounds built on the Web Audio API
  • ๐Ÿ“ฆ Assets - Asynchronous streaming system built on glTF 2.0, Draco and Basis compression
  • ๐Ÿ“œ Scripts - Write game behaviors in Typescript or JavaScript

Usage

Here's a super-simple Hello World example - a spinning cube!

<meta charset="utf-8">
<title>PlayCanvas Hello Cube</title>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
<style>
    body {
        margin: 0;
        overflow: hidden;
    }
</style>
<script src="https://code.playcanvas.com/playcanvas-stable.min.js"></script>


<canvas id="application"></canvas>
<script>
    // create a PlayCanvas application
    const canvas = document.getElementById('application');
    const app = new pc.Application(canvas);

    // fill the available space at full resolution
    app.setCanvasFillMode(pc.FILLMODE_FILL_WINDOW);
    app.setCanvasResolution(pc.RESOLUTION_AUTO);

    // ensure canvas is resized when window changes size
    window.addEventListener('resize', () => app.resizeCanvas());

    // create box entity
    const box = new pc.Entity('cube');
    box.addComponent('model', {
        type: 'box'
    });
    app.root.addChild(box);

    // create camera entity
    const camera = new pc.Entity('camera');
    camera.addComponent('camera', {
        clearColor: new pc.Color(0.1, 0.1, 0.1)
    });
    app.root.addChild(camera);
    camera.setPosition(0, 0, 3);

    // create directional light entity
    const light = new pc.Entity('light');
    light.addComponent('light');
    app.root.addChild(light);
    light.setEulerAngles(45, 0, 0);

    // rotate the box according to the delta time since the last frame
    app.on('update', dt => box.rotate(10 * dt, 20 * dt, 30 * dt));

    app.start();
</script>

Want to play with the code yourself? Edit it on CodePen.

How to build

Ensure you have Node.js installed. Then, install all of the required Node.js dependencies:

npm install

Now you can run various build options:

| Command | Description | Outputs | |------------------------|-------------------------------------------|----------------------------------| |

npm run build
| Build release, debug and profiler engines |
build\playcanvas[.dbg/.prf].js
| |
npm run closure
| Build minified release engine |
build\playcanvas.min.js
| |
npm run tsd
| Build engine Typescript bindings |
build\playcanvas.d.ts
| |
npm run docs
| Build engine API reference docs |
docs
|

Pre-built versions of the engine are also available.

Latest development release (head revision of master branch):

  • https://code.playcanvas.com/playcanvas-latest.js
  • https://code.playcanvas.com/playcanvas-latest.min.js

Latest stable release:

  • https://code.playcanvas.com/playcanvas-stable.js
  • https://code.playcanvas.com/playcanvas-stable.min.js

Specific engine versions:

  • https://code.playcanvas.com/playcanvas-0.181.11.js
  • https://code.playcanvas.com/playcanvas-0.181.11.min.js

Generate Source Maps

To build the source map to allow for easier engine debugging, you can add

-- -m
to any engine build command. For example:
npm run build -- -m

This will output to

build/output/playcanvas.js.map

Note: The preprocessor is ignored when when generating the source map as it breaks the mapping. This means that all debug and profiling code is included in the engine build when generating the source map.

How to run tests

PlayCanvas uses of Karma for unit testing. There are two ways of running the tests:

| Command | Description | |------------------------|---------------------------------------------------------------------------------------| |

npm run test
| Runs unit tests on a built
playcanvas.js
| |
npm run test:watch
| Re-runs unit tests when changes are detected - open http://localhost:9876/debug.html |

How to get models?

To convert any models created using a 3D modelling package see this page in the developer documentation.

Useful Links

Contributing

Want to help us make the best 3D engine on the web? Great! Check out CONTRIBUTING.md that will get you started. And look for "good first PR" label in Issues.

PlayCanvas Platform

The PlayCanvas Engine is an open source engine which you can use to create games and 3D visualisation in the browser. In addition to the engine we also make the PlayCanvas development platform which features an Visual Editor, asset management, code editing, hosting and publishing services.

License

The PlayCanvas Engine is released under the MIT license. See LICENSE file.

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