APE demo : Move demo

About this demo

This demo shows how APE can handles massive multi-user moving on a web page in real-time. This demo does not use APE as a middleware. A libape-setcord server-side module has been created to handle the coordinates of the users.

Which features are used?

nickname.js
move.js
Sessions
ServerSide JavaScript

Study the source code

Check out the Client JavaScript, HTML and ServerSide JavaScript source code of this demo by reading the following :

<div id="ape_master_container"></div>

<script type="text/javaScript">
	//Create random string used as user nickname
	function rand_chars(plength) {
		var keylist = "abcdefghijklmnopqrstuvwxyz";
		var temp = '';
		for (i = 0; i < plength; i++) {
			temp += keylist.charAt(Math.floor(Math.random() * keylist.length));
		}
		return temp;
	}
	window.addEvent('domready', function() {
		var client = new APE.Move({
			'container': document.getElementById('ape_master_container'),
		});
		client.load({
			'identifier': 'movedemo',
			'channel': 'move',
			'connectOptions': {'name': rand_chars(5)}
		});
	});
</script>

move.js

APE.Move = new Class({
	Extends: APE.Client,
	Implements: Options,
	options: {
		container: document.body
	},
	initialize: function(options) {
		this.setOptions(options);
		this.addEvent('ready', this.initPlayground);
		this.addEvent('userJoin', this.createUser);
		this.addEvent('multiPipeCreate', function(pipe, options) {
			this.pipe = pipe;
		});
		this.addEvent('userLeft', this.deleteUser);
		this.onRaw('positions', this.rawPositions);
		this.onRaw('data', this.rawData);
		this.onCmd('send', this.cmdSend);
		this.onError('004', this.reset);
	},
	deleteUser: function(user, pipe) {
		user.element.dispose();
	},
	cmdSend: function(param, pipe) {
		this.writeMessage(pipe, param.msg, this.core.user);
	},
	rawData: function(raw, pipe) {
		this.writeMessage(pipe, raw.data.msg, raw.data.from);
	},
	rawPositions: function(raw, pipe) {
		this.movePoint(raw.data.from, raw.data.x, raw.data.y);
	},
	parseMessage: function(message) {
		return decodeURIComponent(message);
	},
	writeMessage: function(pipe, message, sender) {
		//Define sender
		sender = this.pipe.getUser(sender.pubid);
		//destroy old message
		sender.element.getElements('.ape_message_container').destroy();
		//Create message container
		var msg = new Element('div', {
			'opacity': '0',
			'class': 'ape_message_container'
		});
		var cnt = new Element('div', {
			'class': 'msg_top'
		}).inject(msg);
		//Add message
		new Element('div', {
			'text': this.parseMessage(message),
			'class': 'ape_message'
		}).inject(cnt);
		new Element('div', {
			'class': 'msg_bot'
		}).inject(cnt);
		//Inject message
		msg.inject(sender.element);
		//Show message
		var fx = msg.morph({
			'opacity': '1'
		});
		//Delete old message
		(function(el) {
			$(el).morph({
				'opacity': '0'
			});
			(function() {
				$(this).dispose();
			}).delay(300, el);
		}).delay(3000, this, msg);
	},
	createUser: function(user, pipe) {
		if (user.properties.x) {
			var x = user.properties.x;
			var y = user.properties.y;
		} else {
			var x = 8;
			var y = 8;
		}
		var pos = this.element.getCoordinates();
		x = x.toInt() + pos.left;
		y = y.toInt() + pos.top;
		user.element = new Element('div', {
			'class': 'demo_box_container',
			'styles': {
				'left': x + 'px',
				'top': y + 'px'
			}
		}).inject(this.element, 'inside');
		new Element('div', {
			'class': 'user',
			'styles': {
				'background-color': 'rgb(' + this.userColor(user.properties.name) + ')'
			}
		}).inject(user.element, 'inside');
		var span = new Element('span', {
			'text': user.properties.name
		}).inject(user.element, 'inside');
		if (user.pubid == this.core.user.pubid) {
			span.addClass('you');
			span.set('text', 'You');
			if (!this.core.options.restore) {
				var offset = this.element.getPosition();
				this.sendpos($random(0, 640) + offset.x, $random(0, 300) + offset.y);
			}
		}
	},
	userColor: function(nickname) {
		var color = new Array(0, 0, 0);
		var i = 0;
		while (i < 3 && i < nickname.length) {
			color[i] = Math.abs(Math.round(((nickname.charCodeAt(i) - 97) / 26) * 200 + 10));
			i++;
		}
		return color.join(', ');
	},
	sendpos: function(x, y) {
		var pos = this.posToRelative(x, y);
		this.pipe.request.send('SETPOS', {
			'x': pos.x.toInt(),
			'y': pos.y.toInt()
		});
		this.movePoint(this.core.user, pos.x, pos.y);
	},

	posToRelative: function(x, y) {
		var pos = this.element.getCoordinates();
		x = x - pos.left - 36;
		y = y - pos.top - 46;
		if (x < 0) x = 10;
		if (x > pos.width) x = pos.width - 10;
		if (y < 0) y = 10;
		if (y > pos.height) y = pos.height - 10;
		return {
			'x': x,
			'y': y
		};
	},
	movePoint: function(user, x, y) {
		var user = this.pipe.getUser(user.pubid);
		var el = user.element;
		var fx = el.retrieve('fx');
		if (!fx) {
			fx = new Fx.Morph(el, {
				'duration': 300,
				'fps': 100
			});
			el.store('fx', fx);
		}
		el.retrieve('fx').cancel();
		pos = this.element.getCoordinates();
		x = x.toInt();
		y = y.toInt();
		//Save position in user properties
		user.properties.x = x;
		user.properties.y = y;
		fx.start({
			'left': pos.left + x,
			'top': pos.top + y
		});
	},
	initPlayground: function() {
		this.element = this.options.container;
		this.els = {};
		this.els.move_box = new Element('div', {
			'class': 'move_box'
		}).inject(this.element);
		this.els.move_box.addEvent('mousedown', function(ev) {
			ev.stop();
			this.sendpos(ev.page.x, ev.page.y);
		}.bindWithEvent(this));
		var el1 = new Element('div', {
			'id': 'moveOverlay',
			'styles': {
				'opacity': 0.5
			}
		}).inject(this.element, 'top');
		var el2 = new Element('div', {
			'id': 'moveOverlay',
			'styles': {
				'background': 'none',
				'z-index': 6
			},
			'text': 'Click on the grey area to move your ball'
		}).inject(this.element, 'top');
		var clear = function() {
				el1.fade('out');
				el2.fade('out');
				el1.get('morph').addEvent('complete', function() {
					el1.dispose();
					el2.dispose();
				});
			};
		el2.addEvent('click', function() {
			el1.destroy();
			el2.destroy();
		});
		clear.delay(1500);
		this.els.more = new Element('div', {
			'id': 'more'
		}).inject(this.element, 'inside');
		this.els.sendboxContainer = new Element('div', {
			'id': 'ape_sendbox_container'
		}).inject(this.els.more);
		this.els.sendBox = new Element('div', {
			'text': 'Say : ',
			'id': 'ape_sendbox'
		}).inject(this.els.sendboxContainer, 'bottom');
		this.els.sendbox = new Element('input', {
			'type': 'text',
			'id': 'sendbox_input',
			'autocomplete': 'off',
			'events': {
				'keypress': function(ev) {
					if (ev.code == 13) {
						var val = this.els.sendbox.get('value');
						if (val != '') {
							this.pipe.send(val);
							$(ev.target).set('value', '');
						}
					}
				}.bind(this)
			}
		}).inject(this.els.sendBox);
		this.els.sendButton = new Element('input', {
			'type': 'button',
			'id': 'sendbox_button',
			'value': 'Send',
			'events': {
				'click': function() {
					var val = this.els.sendbox.get('value');
					if (val != '') {
						this.pipe.send(val);
						$(ev.target).set('value', '');
					}
				}.bind(this)
			}
		}).inject(this.els.sendBox);
	},
	reset: function() {
		this.core.clearSession();
		if (this.element) {
			this.element.empty();
		}
		this.core.initialize(this.core.options);
	}

});

ssjs/move.js

Ape.registerCmd('setpos', true, function(params, infos) {
	if ((!$defined(params.x) || !$defined(params.y)) && (!isFinite(params.x) || !isFinite(params.y))) return 0;

	infos.user.setProperty('x', params.x);
	infos.user.setProperty('y', params.y);

	var chan = Ape.getChannelByPubid(params.pipe);

	if (chan) {
		chan.pipe.sendRaw('positions', {
			'x': params.x,
			'y': params.y
		}, {
			'from': infos.user.pipe,
			'restrict': infos.subuser
		});
	} else {
		return ['109', 'UNKNOWN_PIPE'];
	}

	return 1;
});

demo.css

#more,#ape_master_container {
	width:685px;
	margin:auto;
}

#ape_master_container {
	height:385px;
	background:url(Images/bg.png);
	border:8px solid #4c4c4c;
}

#sendbox_input {
	border:none;
	font-weight:700;
	width:540px;
	margin-right:10px;
	border:none;
	background:none;
	color:#FFF;
}

.demo_box_container .user {
	width:100%;
	height:100%;
}

.demo_box_container {
	width:36px;
	height:36px;
	position:absolute;
}

.demo_box_container .user {
	background:url(Images/round.png);
	-background-image:none;
	filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true,sizingMethod=crop src='Images/round.png');
}

.demo_box_container span {
	color:#fff;
	font-size:14px;
}

#ape_sendbox_container {
	border-left:4px #FFF;
	background:url(Images/bottom.png);
	width:686px;
	margin-left:-8px;
	margin-top:385px;
	height:49px;
	margin-top:345px;
	color:#FFF;
	font-weight:700;
	padding-left:15px;
	line-height:51px;
	font-size:13px;
}

#sendbox_button {
	color:#d58025;
	width:70px;
	height:35px;
	background:none;
	font-weight:700;
	border:none;
}

.ape_message_container {
	white-space:normal;
	width:244px;
	margin-left:21px;
	margin-top:-77px;
}

.msg_top {
	background:url(Images/msg_top.png) no-repeat;
	padding-top:5px;
	height:17px;
}

.ape_message {
	background:url(Images/msg_mid.png) repeat-y;
	padding-left:24px;
	overflow:hidden;
	font-size:16px;
	line-height:20px;
	font-family:Verdana;
	color:#5f5f60;
}

.msg_bot {
	background:url(Images/msg_bot.png) repeat-y;
	height:9px;
}

.move_box {
	height:345px;
	width:682px;
	position:absolute;
}