LÖVE.js

LÖVE.js is a game engine for developing 2D games in the browser. It is written in JavaScript and fully covered by tests.

This is a partial port of LÖVE game engine written in Lua.

Usage

var love = require('love');

var prev = { x: null, y: null },
    canvas;

love.load = function() {
  var screen = love.graphics.newCanvas('#drawing');
  love.graphics.setScreen(screen);

  canvas = love.graphics.newCanvas();

  love.mouse.on('moved', moved);
};

function moved() {
  var pos = love.mouse.getPosition();

  if (love.mouse.isDown('left')) {
    canvas.use(function() {
      love.graphics.line(prev.x, prev.y, pos.x, pos.y);
    });
  }

  prev.x = pos.x;
  prev.y = pos.y;
}

love.draw = function() {
  love.graphics.draw(canvas, 0, 0);
};

love.run();

More examples are in the examples directory.

Building

LÖVE.js uses CommonJS-style modules. But don't worry, to build you just need to run npm install to install dependencies and then make build. The output file will be in the out directory.

Documentation

The documentation can be found at lovejs.rtfd.org. You can also look at some examples in the examples directory.

Running tests

First, run npm install to install dependencies.

1. In a browser
   Just run make browser-test and open localhost:3000.

2. Without a browser
   Yeah, testing browser-based game engine without a browser.
   Just run make test.