Javascript math utility for games.
JavaScript
Latest commit 52e4210 May 15, 2013 Ben D'Angelo bumped version
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README.md

Rift

Javascript Toolkit for Game Devs. This is not a game engine but a math library. This solves writing the same math formulas over and over. Rift is similar to the Math class, it has no state and its global.

Install

Rift supports NodeJS and every modern browser.

npm install rift

Usage

Below are some use cases of Rift.

Tile-based Games

var tileSize = 30;

.on("mousemove", function(x, y){

    var tileX = Rift.tile(x, tileSize);
    var tileY = Rift.tile(y, tileSize);

    player.x = tileX * size;
    player.y = tileY * size;

});

Isometric Games

var tileSize = 30;

.on("mousemove", function(x, y){

    var isoX = Rift.isoX(x, y, tileSize);
    var isoY = Rift.isoY(x, y, tileSize);

    player.x = Rift.worldIsoX(isoX, isoY, tileSize);
    player.y = Rift.worldIsoY(isoX, isoY, tileSize);

});

Random Helpers

var player = new Player();

// return integer number between 20 - 100
var randomGold = Rift.randomInt(20, 100);

player.giveGold(randomGold);

// return random element
var randomItem = Rift.random([item1, item2]);

player.giveItem(randomItem);

player.stats = {str: 10, dex: 5, vit: 4, int: 7};

// return random property
var randomStatDown = Rift.random(player.stats);

player.stats[randomStatDown] /= 2;

Math

var player = new Player();
var monster = new Monster();

var distance = Rift.distance(player.x, player.y, monster.x, monster.y);

if(Rift.hitTest(player.x, player.y, player.width, player.height,
    monster.x, monster.y, monster.width, monster.height)){
        // we hit
}

Change Log

0.1.1

  • First release