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littlejsengine

v1.18.15

Published

LittleJS - Tiny and Fast HTML5 Game Engine

Vulnerabilities

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Links

Git

Maintainers

killedbyapixelkilledbyapixel

Keywords

LittleJSHTML5JavaScriptgameenginelibraryJS13Kwebgl

Readme

LittleJS - The Tiny Fast JavaScript Game Engine

LittleJS Logo

NPM Package Build Size NPM Downloads DeepScan MIT License Discord

🚂 All Aboard!

LittleJS is a fast, lightweight, and fully open source HTML5 game engine designed for simplicity and performance. Its small footprint is packed with a comprehensive feature set including rendering, physics, particles, sound, and input handling. The code is very clean and well documented with many examples to get you started quickly.

🚀 Join the LittleJS Game Jam

The Third Annual LittleJS Game Jam will take place From Oct 2 to Nov 2! Unleash your creativity and develop amazing games using the LittleJS game engine. 🕹️🎮 Sign up today and get more info about the jam on itch.io!

Demos | Docs | Reference | FAQ | Trailer | Discord

LittleJS Screenshot

LittleJS Features

✨ Graphics

  • Blazing fast WebGL2 + Canvas2D hybrid rendering system
  • Apply Shadertoy style shaders for post-processing effects
  • Robust particle effect system and effect design tool

🔊 Audio

  • Sound and music with mp3, ogg, or wave files
  • Use ZzFX sound generator to play sounds without asset files
  • Spatial audio stereo panning

🎮 Input

  • Comprehensive input handling for mouse, keyboard, gamepad, and touch
  • Customizable on screen gamepad designed for mobile devices

💥 Physics

  • Robust arcade physics system with collision handling
  • Fast tilemap collision and raycasting
  • Full Box2D integration for realistic physics using Box2D v2.3.1 wasm
  • Grid-based A* pathfinding plugin with optional path smoothing

🚀 Flexibility

  • Compatible with all modern web browsers and mobile devices
  • Full TypeScript and Module support with example projects for both
  • Vite starter template for instant dev server with hot reload
  • Great for size coding competitions like Js13kGames
  • Open Source and MIT licensed

🛠️ Developer Tools

  • Live example browser with code editor
  • Import level editor data from Tiled or other JSON
  • Debug overlay and primitive rendering system
  • Medal tracking system with Newgrounds support
  • Node.js build system

How To Use LittleJS

To get started download the latest LittleJS package from GitHub or install via npm:

npm install littlejsengine

or use degit for an empty Vite template

npx degit KilledByAPixel/LittleJS/examples/vite-starter my-game
cd my-game
npm install
npm run dev

Here is a minimal Hello World example game.

<!DOCTYPE html>
<script src="../dist/littlejs.js"></script>
<script>
function gameInit() {}
function gameUpdate() {}
function gameUpdatePost() {}
function gameRender() {}
function gameRenderPost() { drawTextScreen('Hello World!', mainCanvasSize.scale(.5), 80); }
engineInit(gameInit, gameUpdate, gameUpdatePost, gameRender, gameRenderPost);
</script>

Tutorials

Examples

LittleJS comes with several demos both for learning and using as starter projects to create new games.

  • Example Browser - Live example browser with all examples and editable source
  • Short Examples - 60+ single-file demos showing off individual engine features
  • Breakout - Block breaking game with post-processing effects
  • Puzzle Game - Match 3 puzzle game with HD rendering and high score tracking
  • Platformer - Platformer/shooter demo that loads level data
  • Box2D Demo - Box2D plugin demonstration and testbed
  • Stress Test - Sprite rendering benchmark and music system demo
  • Particle System Designer - Particle system editor and visualizer

Builds

| File | Mode | Module | Use case | |------|------|--------|----------| | littlejs.js | Debug | No | Debug mode with asserts | | littlejs.release.js | Release | No | Optimized for release | | littlejs.min.js | Release | No | Optimized for release and minified | | littlejs.esm.js | Debug | ESM | Debug mode with asserts | | littlejs.esm.min.js | Release | ESM | Optimized for release and minified |

Games Made With LittleJS

Here are a few of the many amazing games created with LittleJS...

A collage of screenshots from games made with LittleJS

A sample of games built with LittleJS.

LittleJS pixel-art favicon