requirebin sketch

index.js

var inherits = require('inherits');
var Game = require('crtrdg-gameloop');
var Entity = require('crtrdg-entity');
var Keyboard = require('crtrdg-keyboard');

inherits(Player, Entity);

function Player(options){
  this.position = { 
    x: options.position.x, 
    y: options.position.y 
  };

  this.size = {
    x: options.size.x,
    y: options.size.y
  };

  this.velocity = {
    x: options.velocity.x,
    y: options.velocity.y
  };
  
  this.speed = options.speed;
  this.friction = options.friction;
  this.color = options.color;
}

Player.prototype.move = function(velocity){
  this.position.x += velocity.x;
  this.position.y += velocity.y;
};

Player.prototype.checkBoundaries = function(){
  if (this.position.x <= 0){
    this.position.x = 0;
  }

  if (this.position.x >= this.game.width - this.size.x){
    this.position.x = this.game.width - this.size.x;
  }

  if (this.position.y <= 0){
    this.position.y = 0;
  }

  if (this.position.y >= this.game.height - this.size.y){
    this.position.y = this.game.height - this.size.y;
  }
};

Player.prototype.keyboardInput = function(){
  if ('A' in keyboard.keysDown){
    this.velocity.x = -this.speed;
  }

  if ('D' in keyboard.keysDown){
    this.velocity.x = this.speed;
  }

  if ('W' in keyboard.keysDown){
    this.velocity.y = -this.speed;
  }

  if ('S' in keyboard.keysDown){
    this.velocity.y = this.speed;
  }
};

var game = new Game({
  canvasId: 'game',
  width: window.innerWidth,
  height: window.innerHeight,
  backgroundColor: '#E187B8'
});

var keyboard = new Keyboard(game);

var player = new Player({
  position: { x: 10, y: 10 },
  size: { x: 10, y: 10 },
  velocity: { x: 0, y: 0 },
  speed: 3,
  friction: 0.9,
  color: '#fff'
});

player.addTo(game);

player.on('update', function(interval){
  this.keyboardInput(keyboard);

  this.move(this.velocity);
  this.velocity.x *= this.friction;
  this.velocity.y *= this.friction;

  this.checkBoundaries();
});

player.on('draw', function(draw){
  draw.fillStyle = this.color;
  draw.fillRect(this.position.x, this.position.y, this.size.x, this.size.y);
});

minified.js

require=function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({inherits:[function(require,module,exports){if(typeof Object.create==="function"){module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:false,writable:true,configurable:true}})}}else{module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;var TempCtor=function(){};TempCtor.prototype=superCtor.prototype;ctor.prototype=new TempCtor;ctor.prototype.constructor=ctor}}},{}]},{},[]);require=function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){function EventEmitter(){this._events=this._events||{};this._maxListeners=this._maxListeners||undefined}module.exports=EventEmitter;EventEmitter.EventEmitter=EventEmitter;EventEmitter.prototype._events=undefined;EventEmitter.prototype._maxListeners=undefined;EventEmitter.defaultMaxListeners=10;EventEmitter.prototype.setMaxListeners=function(n){if(!isNumber(n)||n<0||isNaN(n))throw TypeError("n must be a positive number");this._maxListeners=n;return this};EventEmitter.prototype.emit=function(type){var er,handler,len,args,i,listeners;if(!this._events)this._events={};if(type==="error"){if(!this._events.error||isObject(this._events.error)&&!this._events.error.length){er=arguments[1];if(er instanceof Error){throw er}throw TypeError('Uncaught, unspecified "error" event.')}}handler=this._events[type];if(isUndefined(handler))return false;if(isFunction(handler)){switch(arguments.length){case 1:handler.call(this);break;case 2:handler.call(this,arguments[1]);break;case 3:handler.call(this,arguments[1],arguments[2]);break;default:len=arguments.length;args=new Array(len-1);for(i=1;i<len;i++)args[i-1]=arguments[i];handler.apply(this,args)}}else if(isObject(handler)){len=arguments.length;args=new Array(len-1);for(i=1;i<len;i++)args[i-1]=arguments[i];listeners=handler.slice();len=listeners.length;for(i=0;i<len;i++)listeners[i].apply(this,args)}return true};EventEmitter.prototype.addListener=function(type,listener){var m;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events)this._events={};if(this._events.newListener)this.emit("newListener",type,isFunction(listener.listener)?listener.listener:listener);if(!this._events[type])this._events[type]=listener;else if(isObject(this._events[type]))this._events[type].push(listener);else this._events[type]=[this._events[type],listener];if(isObject(this._events[type])&&!this._events[type].warned){var m;if(!isUndefined(this._maxListeners)){m=this._maxListeners}else{m=EventEmitter.defaultMaxListeners}if(m&&m>0&&this._events[type].length>m){this._events[type].warned=true;console.error("(node) warning: possible EventEmitter memory "+"leak detected. %d listeners added. "+"Use emitter.setMaxListeners() to increase limit.",this._events[type].length);if(typeof console.trace==="function"){console.trace()}}}return this};EventEmitter.prototype.on=EventEmitter.prototype.addListener;EventEmitter.prototype.once=function(type,listener){if(!isFunction(listener))throw TypeError("listener must be a function");var fired=false;function g(){this.removeListener(type,g);if(!fired){fired=true;listener.apply(this,arguments)}}g.listener=listener;this.on(type,g);return this};EventEmitter.prototype.removeListener=function(type,listener){var list,position,length,i;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events||!this._events[type])return this;list=this._events[type];length=list.length;position=-1;if(list===listener||isFunction(list.listener)&&list.listener===listener){delete this._events[type];if(this._events.removeListener)this.emit("removeListener",type,listener)}else if(isObject(list)){for(i=length;i-->0;){if(list[i]===listener||list[i].listener&&list[i].listener===listener){position=i;break}}if(position<0)return this;if(list.length===1){list.length=0;delete this._events[type]}else{list.splice(position,1)}if(this._events.removeListener)this.emit("removeListener",type,listener)}return this};EventEmitter.prototype.removeAllListeners=function(type){var key,listeners;if(!this._events)return this;if(!this._events.removeListener){if(arguments.length===0)this._events={};else if(this._events[type])delete this._events[type];return this}if(arguments.length===0){for(key in this._events){if(key==="removeListener")continue;this.removeAllListeners(key)}this.removeAllListeners("removeListener");this._events={};return this}listeners=this._events[type];if(isFunction(listeners)){this.removeListener(type,listeners)}else{while(listeners.length)this.removeListener(type,listeners[listeners.length-1])}delete this._events[type];return this};EventEmitter.prototype.listeners=function(type){var ret;if(!this._events||!this._events[type])ret=[];else if(isFunction(this._events[type]))ret=[this._events[type]];else ret=this._events[type].slice();return ret};EventEmitter.listenerCount=function(emitter,type){var ret;if(!emitter._events||!emitter._events[type])ret=0;else if(isFunction(emitter._events[type]))ret=1;else ret=emitter._events[type].length;return ret};function isFunction(arg){return typeof arg==="function"}function isNumber(arg){return typeof arg==="number"}function isObject(arg){return typeof arg==="object"&&arg!==null}function isUndefined(arg){return arg===void 0}},{}],2:[function(require,module,exports){if(typeof Object.create==="function"){module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:false,writable:true,configurable:true}})}}else{module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;var TempCtor=function(){};TempCtor.prototype=superCtor.prototype;ctor.prototype=new TempCtor;ctor.prototype.constructor=ctor}}},{}],3:[function(require,module,exports){module.exports=raf;var EE=require("events").EventEmitter,global=typeof window==="undefined"?this:window,now=global.performance&&global.performance.now?function(){return performance.now()}:Date.now||function(){return+new Date};var _raf=global.requestAnimationFrame||global.webkitRequestAnimationFrame||global.mozRequestAnimationFrame||global.msRequestAnimationFrame||global.oRequestAnimationFrame||(global.setImmediate?function(fn,el){setImmediate(fn)}:function(fn,el){setTimeout(fn,0)});function raf(el){var now=raf.now(),ee=new EE;ee.pause=function(){ee.paused=true};ee.resume=function(){ee.paused=false};_raf(iter,el);return ee;function iter(timestamp){var _now=raf.now(),dt=_now-now;now=_now;ee.emit("data",dt);if(!ee.paused){_raf(iter,el)}}}raf.polyfill=_raf;raf.now=now},{events:1}],"crtrdg-gameloop":[function(require,module,exports){var EventEmitter=require("events").EventEmitter;var requestAnimationFrame=require("raf");var inherits=require("inherits");module.exports=Game;inherits(Game,EventEmitter);function Game(options){var options=options||{};if(!options.canvas){this.canvas=document.createElement("canvas");this.canvas.id="game";document.body.appendChild(this.canvas)}else if(typeof options.canvas==="string"){this.canvas=document.getElementById(options.canvas)}else if(typeof options.canvas==="object"&&options.canvas.tagName){this.canvas=options.canvas}this.context=this.canvas.getContext("2d");this.width=this.canvas.width=options.width||window.innerWidth;this.height=this.canvas.height=options.height||window.innerHeight;this.backgroundColor=options.backgroundColor||"#E187B8";this.ticker=requestAnimationFrame(this.canvas);this.paused=false;if(options.maxListeners){this.setMaxListeners(options.maxListeners)}else{this.setMaxListeners(0)}this.loop()}Game.prototype.loop=function(){var self=this;this.ticker.on("data",function(interval){self.update(interval);self.draw()})};Game.prototype.pause=function(){this.paused=true;this.ticker.pause();this.emit("pause")};Game.prototype.resume=function(){var self=this;this.paused=false;this.ticker=requestAnimationFrame(this.canvas);this.ticker.on("data",function(interval){self.update(interval);self.draw()});this.emit("resume")};Game.prototype.update=function(interval){if(this.currentScene){this.sceneManager.update(interval)}this.emit("update",interval)};Game.prototype.draw=function(){if(this.currentScene){this.context.fillStyle=this.currentScene.backgroundColor;this.sceneManager.draw(this.context)}else{this.context.fillStyle=this.backgroundColor}this.context.fillRect(0,0,this.width,this.height);this.emit("draw",this.context)}},{events:1,inherits:2,raf:3}]},{},[]);require=function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){function EventEmitter(){this._events=this._events||{};this._maxListeners=this._maxListeners||undefined}module.exports=EventEmitter;EventEmitter.EventEmitter=EventEmitter;EventEmitter.prototype._events=undefined;EventEmitter.prototype._maxListeners=undefined;EventEmitter.defaultMaxListeners=10;EventEmitter.prototype.setMaxListeners=function(n){if(!isNumber(n)||n<0||isNaN(n))throw TypeError("n must be a positive number");this._maxListeners=n;return this};EventEmitter.prototype.emit=function(type){var er,handler,len,args,i,listeners;if(!this._events)this._events={};if(type==="error"){if(!this._events.error||isObject(this._events.error)&&!this._events.error.length){er=arguments[1];if(er instanceof Error){throw er}throw TypeError('Uncaught, unspecified "error" event.')}}handler=this._events[type];if(isUndefined(handler))return false;if(isFunction(handler)){switch(arguments.length){case 1:handler.call(this);break;case 2:handler.call(this,arguments[1]);break;case 3:handler.call(this,arguments[1],arguments[2]);break;default:len=arguments.length;args=new Array(len-1);for(i=1;i<len;i++)args[i-1]=arguments[i];handler.apply(this,args)}}else if(isObject(handler)){len=arguments.length;args=new Array(len-1);for(i=1;i<len;i++)args[i-1]=arguments[i];listeners=handler.slice();len=listeners.length;for(i=0;i<len;i++)listeners[i].apply(this,args)}return true};EventEmitter.prototype.addListener=function(type,listener){var m;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events)this._events={};if(this._events.newListener)this.emit("newListener",type,isFunction(listener.listener)?listener.listener:listener);if(!this._events[type])this._events[type]=listener;else if(isObject(this._events[type]))this._events[type].push(listener);else this._events[type]=[this._events[type],listener];if(isObject(this._events[type])&&!this._events[type].warned){var m;if(!isUndefined(this._maxListeners)){m=this._maxListeners}else{m=EventEmitter.defaultMaxListeners}if(m&&m>0&&this._events[type].length>m){this._events[type].warned=true;console.error("(node) warning: possible EventEmitter memory "+"leak detected. %d listeners added. "+"Use emitter.setMaxListeners() to increase limit.",this._events[type].length);if(typeof console.trace==="function"){console.trace()}}}return this};EventEmitter.prototype.on=EventEmitter.prototype.addListener;EventEmitter.prototype.once=function(type,listener){if(!isFunction(listener))throw TypeError("listener must be a function");var fired=false;function g(){this.removeListener(type,g);if(!fired){fired=true;listener.apply(this,arguments)}}g.listener=listener;this.on(type,g);return this};EventEmitter.prototype.removeListener=function(type,listener){var list,position,length,i;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events||!this._events[type])return this;list=this._events[type];length=list.length;position=-1;if(list===listener||isFunction(list.listener)&&list.listener===listener){delete this._events[type];if(this._events.removeListener)this.emit("removeListener",type,listener)}else if(isObject(list)){for(i=length;i-->0;){if(list[i]===listener||list[i].listener&&list[i].listener===listener){position=i;break}}if(position<0)return this;if(list.length===1){list.length=0;delete this._events[type]}else{list.splice(position,1)}if(this._events.removeListener)this.emit("removeListener",type,listener)}return this};EventEmitter.prototype.removeAllListeners=function(type){var key,listeners;if(!this._events)return this;if(!this._events.removeListener){if(arguments.length===0)this._events={};else if(this._events[type])delete this._events[type];return this}if(arguments.length===0){for(key in this._events){if(key==="removeListener")continue;this.removeAllListeners(key)}this.removeAllListeners("removeListener");this._events={};return this}listeners=this._events[type];if(isFunction(listeners)){this.removeListener(type,listeners)}else{while(listeners.length)this.removeListener(type,listeners[listeners.length-1])}delete this._events[type];return this};EventEmitter.prototype.listeners=function(type){var ret;if(!this._events||!this._events[type])ret=[];else if(isFunction(this._events[type]))ret=[this._events[type]];else ret=this._events[type].slice();return ret};EventEmitter.listenerCount=function(emitter,type){var ret;if(!emitter._events||!emitter._events[type])ret=0;else if(isFunction(emitter._events[type]))ret=1;else ret=emitter._events[type].length;return ret};function isFunction(arg){return typeof arg==="function"}function isNumber(arg){return typeof arg==="number"}function isObject(arg){return typeof arg==="object"&&arg!==null}function isUndefined(arg){return arg===void 0}},{}],2:[function(require,module,exports){if(typeof Object.create==="function"){module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:false,writable:true,configurable:true}})}}else{module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;var TempCtor=function(){};TempCtor.prototype=superCtor.prototype;ctor.prototype=new TempCtor;ctor.prototype.constructor=ctor}}},{}],"crtrdg-entity":[function(require,module,exports){var EventEmitter=require("events").EventEmitter;var inherits=require("inherits");module.exports=Entity;inherits(Entity,EventEmitter);function Entity(){return this}Entity.prototype.addTo=function(game,fn){this.game=game||{};if(!this.game.entities){this.game.entities=[]}this.game.entities.push(this);this.game.findEntity=this.findEntity;this.initializeListeners();this.exists=true;if(fn){fn(this)}return this};Entity.prototype.initializeListeners=function(){var self=this;this.findEntity(this,function(exists,entities,index){if(exists){self.game.on("update",function(interval){self.emit("update",interval)});self.game.on("draw",function(context){self.emit("draw",context)})}})};Entity.prototype.remove=function(){this.exists=false;this.removeAllListeners("update");this.removeAllListeners("draw");this.findEntity(this,function(exists,entities,index){if(exists){entities.splice(index,1)}})};Entity.prototype.findEntity=function(entity,callback){var entities;if(this.game===undefined){entities=this.entities}else{entities=this.game.entities}for(var i=0;i<entities.length;i++){if(entities[i]===entity){callback(true,entities,i)}}}},{events:1,inherits:2}]},{},[]);require=function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){function EventEmitter(){this._events=this._events||{};this._maxListeners=this._maxListeners||undefined}module.exports=EventEmitter;EventEmitter.EventEmitter=EventEmitter;EventEmitter.prototype._events=undefined;EventEmitter.prototype._maxListeners=undefined;EventEmitter.defaultMaxListeners=10;EventEmitter.prototype.setMaxListeners=function(n){if(!isNumber(n)||n<0||isNaN(n))throw TypeError("n must be a positive number");this._maxListeners=n;return this};EventEmitter.prototype.emit=function(type){var er,handler,len,args,i,listeners;if(!this._events)this._events={};if(type==="error"){if(!this._events.error||isObject(this._events.error)&&!this._events.error.length){er=arguments[1];if(er instanceof Error){throw er}throw TypeError('Uncaught, unspecified "error" event.')}}handler=this._events[type];if(isUndefined(handler))return false;if(isFunction(handler)){switch(arguments.length){case 1:handler.call(this);break;case 2:handler.call(this,arguments[1]);break;case 3:handler.call(this,arguments[1],arguments[2]);break;default:len=arguments.length;args=new Array(len-1);for(i=1;i<len;i++)args[i-1]=arguments[i];handler.apply(this,args)}}else if(isObject(handler)){len=arguments.length;args=new Array(len-1);for(i=1;i<len;i++)args[i-1]=arguments[i];listeners=handler.slice();len=listeners.length;for(i=0;i<len;i++)listeners[i].apply(this,args)}return true};EventEmitter.prototype.addListener=function(type,listener){var m;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events)this._events={};if(this._events.newListener)this.emit("newListener",type,isFunction(listener.listener)?listener.listener:listener);if(!this._events[type])this._events[type]=listener;else if(isObject(this._events[type]))this._events[type].push(listener);else this._events[type]=[this._events[type],listener];if(isObject(this._events[type])&&!this._events[type].warned){var m;if(!isUndefined(this._maxListeners)){m=this._maxListeners}else{m=EventEmitter.defaultMaxListeners}if(m&&m>0&&this._events[type].length>m){this._events[type].warned=true;console.error("(node) warning: possible EventEmitter memory "+"leak detected. %d listeners added. "+"Use emitter.setMaxListeners() to increase limit.",this._events[type].length);if(typeof console.trace==="function"){console.trace()}}}return this};EventEmitter.prototype.on=EventEmitter.prototype.addListener;EventEmitter.prototype.once=function(type,listener){if(!isFunction(listener))throw TypeError("listener must be a function");var fired=false;function g(){this.removeListener(type,g);if(!fired){fired=true;listener.apply(this,arguments)}}g.listener=listener;this.on(type,g);return this};EventEmitter.prototype.removeListener=function(type,listener){var list,position,length,i;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events||!this._events[type])return this;list=this._events[type];length=list.length;position=-1;if(list===listener||isFunction(list.listener)&&list.listener===listener){delete this._events[type];if(this._events.removeListener)this.emit("removeListener",type,listener)}else if(isObject(list)){for(i=length;i-->0;){if(list[i]===listener||list[i].listener&&list[i].listener===listener){position=i;break}}if(position<0)return this;if(list.length===1){list.length=0;delete this._events[type]}else{list.splice(position,1)}if(this._events.removeListener)this.emit("removeListener",type,listener)}return this};EventEmitter.prototype.removeAllListeners=function(type){var key,listeners;if(!this._events)return this;if(!this._events.removeListener){if(arguments.length===0)this._events={};else if(this._events[type])delete this._events[type];return this}if(arguments.length===0){for(key in this._events){if(key==="removeListener")continue;this.removeAllListeners(key)}this.removeAllListeners("removeListener");this._events={};return this}listeners=this._events[type];if(isFunction(listeners)){this.removeListener(type,listeners)}else{while(listeners.length)this.removeListener(type,listeners[listeners.length-1])}delete this._events[type];return this};EventEmitter.prototype.listeners=function(type){var ret;if(!this._events||!this._events[type])ret=[];else if(isFunction(this._events[type]))ret=[this._events[type]];else ret=this._events[type].slice();return ret};EventEmitter.listenerCount=function(emitter,type){var ret;if(!emitter._events||!emitter._events[type])ret=0;else if(isFunction(emitter._events[type]))ret=1;else ret=emitter._events[type].length;return ret};function isFunction(arg){return typeof arg==="function"}function isNumber(arg){return typeof arg==="number"}function isObject(arg){return typeof arg==="object"&&arg!==null}function isUndefined(arg){return arg===void 0}},{}],2:[function(require,module,exports){if(typeof Object.create==="function"){module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:false,writable:true,configurable:true}})}}else{module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;var TempCtor=function(){};TempCtor.prototype=superCtor.prototype;ctor.prototype=new TempCtor;ctor.prototype.constructor=ctor}}},{}],3:[function(require,module,exports){var ua=typeof window!=="undefined"?window.navigator.userAgent:"",isOSX=/OS X/.test(ua),isOpera=/Opera/.test(ua),maybeFirefox=!/like Gecko/.test(ua)&&!isOpera;var i,output=module.exports={0:isOSX?"<menu>":"<UNK>",1:"<mouse 1>",2:"<mouse 2>",3:"<break>",4:"<mouse 3>",5:"<mouse 4>",6:"<mouse 5>",8:"<backspace>",9:"<tab>",12:"<clear>",13:"<enter>",16:"<shift>",17:"<control>",18:"<alt>",19:"<pause>",20:"<caps-lock>",21:"<ime-hangul>",23:"<ime-junja>",24:"<ime-final>",25:"<ime-kanji>",27:"<escape>",28:"<ime-convert>",29:"<ime-nonconvert>",30:"<ime-accept>",31:"<ime-mode-change>",27:"<escape>",32:"<space>",33:"<page-up>",34:"<page-down>",35:"<end>",36:"<home>",37:"<left>",38:"<up>",39:"<right>",40:"<down>",41:"<select>",42:"<print>",43:"<execute>",44:"<snapshot>",45:"<insert>",46:"<delete>",47:"<help>",91:"<meta>",92:"<meta>",93:isOSX?"<meta>":"<menu>",95:"<sleep>",106:"<num-*>",107:"<num-+>",108:"<num-enter>",109:"<num-->",110:"<num-.>",111:"<num-/>",144:"<num-lock>",145:"<scroll-lock>",160:"<shift-left>",161:"<shift-right>",162:"<control-left>",163:"<control-right>",164:"<alt-left>",165:"<alt-right>",166:"<browser-back>",167:"<browser-forward>",168:"<browser-refresh>",169:"<browser-stop>",170:"<browser-search>",171:"<browser-favorites>",172:"<browser-home>",173:isOSX&&maybeFirefox?"-":"<volume-mute>",174:"<volume-down>",175:"<volume-up>",176:"<next-track>",177:"<prev-track>",178:"<stop>",179:"<play-pause>",180:"<launch-mail>",181:"<launch-media-select>",182:"<launch-app 1>",183:"<launch-app 2>",186:";",187:"=",188:",",189:"-",190:".",191:"/",192:"`",219:"[",220:"\\",221:"]",222:"'",223:"<meta>",224:"<meta>",226:"<alt-gr>",229:"<ime-process>",231:isOpera?"`":"<unicode>",246:"<attention>",247:"<crsel>",248:"<exsel>",249:"<erase-eof>",250:"<play>",251:"<zoom>",252:"<no-name>",253:"<pa-1>",254:"<clear>"};for(i=58;i<65;++i){output[i]=String.fromCharCode(i)}for(i=48;i<58;++i){output[i]=i-48+""}for(i=65;i<91;++i){output[i]=String.fromCharCode(i)}for(i=96;i<107;++i){output[i]="<num-"+(i-96)+">"}for(i=112;i<136;++i){output[i]="F"+(i-111)}},{}],"crtrdg-keyboard":[function(require,module,exports){var EventEmitter=require("events").EventEmitter;var inherits=require("inherits");var vkey=require("vkey");module.exports=Keyboard;inherits(Keyboard,EventEmitter);function Keyboard(game){this.game=game||{};this.keysDown={};this.initializeListeners()}Keyboard.prototype.initializeListeners=function(){var self=this;document.addEventListener("keydown",function(e){self.emit("keydown",vkey[e.keyCode]);self.keysDown[vkey[e.keyCode]]=true;if(e.keyCode===40||e.keyCode===38||e.keyCode===37||e.keyCode===39||e.keyCode===32){e.preventDefault()}},false);document.addEventListener("keyup",function(e){self.emit("keyup",vkey[e.keyCode]);delete self.keysDown[vkey[e.keyCode]]},false)}},{events:1,inherits:2,vkey:3}]},{},[]);var inherits=require("inherits");var Game=require("crtrdg-gameloop");var Entity=require("crtrdg-entity");var Keyboard=require("crtrdg-keyboard");inherits(Player,Entity);function Player(options){this.position={x:options.position.x,y:options.position.y};this.size={x:options.size.x,y:options.size.y};this.velocity={x:options.velocity.x,y:options.velocity.y};this.speed=options.speed;this.friction=options.friction;this.color=options.color}Player.prototype.move=function(velocity){this.position.x+=velocity.x;this.position.y+=velocity.y};Player.prototype.checkBoundaries=function(){if(this.position.x<=0){this.position.x=0}if(this.position.x>=this.game.width-this.size.x){this.position.x=this.game.width-this.size.x}if(this.position.y<=0){this.position.y=0}if(this.position.y>=this.game.height-this.size.y){this.position.y=this.game.height-this.size.y}};Player.prototype.keyboardInput=function(){if("A"in keyboard.keysDown){this.velocity.x=-this.speed}if("D"in keyboard.keysDown){this.velocity.x=this.speed}if("W"in keyboard.keysDown){this.velocity.y=-this.speed}if("S"in keyboard.keysDown){this.velocity.y=this.speed}};var game=new Game({canvasId:"game",width:window.innerWidth,height:window.innerHeight,backgroundColor:"#E187B8"});var keyboard=new Keyboard(game);var player=new Player({position:{x:10,y:10},size:{x:10,y:10},velocity:{x:0,y:0},speed:3,friction:.9,color:"#fff"});player.addTo(game);player.on("update",function(interval){this.keyboardInput(keyboard);this.move(this.velocity);this.velocity.x*=this.friction;this.velocity.y*=this.friction;this.checkBoundaries()});player.on("draw",function(draw){draw.fillStyle=this.color;draw.fillRect(this.position.x,this.position.y,this.size.x,this.size.y)});

package.json

{
  "name": "requirebin-sketch",
  "version": "1.0.0",
  "dependencies": {
    "inherits": "2.0.1",
    "crtrdg-gameloop": "0.0.4",
    "crtrdg-entity": "0.0.4",
    "crtrdg-keyboard": "0.0.2"
  }
}

page-body.html

<!-- contents of this file will be placed inside the <body> -->

page-head.html

<style type='text/css'>
html, body { margin: 0; padding: 0; border: 0; }
body, html { height: 100%; width: 100%; }
canvas { -webkit-transform: translateZ(0); }
</style>

requirebin.md

made with requirebin