pamela/js/pamela.js

/*
    Copyright 2009 Pieter Iserbyt

    This file is part of Pamela.

    Pamela is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Pamela is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Pamela.  If not, see <http://www.gnu.org/licenses/>.
*/

var context;
var width;
var height;

// Class Pamela
function Pamela(canvas) {
	context = canvas.getContext("2d");
	width = context.canvas.clientWidth;
	height = context.canvas.clientHeight;
	
	this.norbertNode = new NorbertNode();
	this.nodes = [this.norbertNode];
	
	this.mouse = {
		x: 0,
		y: 0
	};
	
	this.buttons = new IFaceButtons();
	this.downloadScriptButton = new DownloadScriptButton(); 
	this.buttons.add(this.downloadScriptButton);
	this.resize();

	this.m = new Matrix();
	this.startTime = this.millis();
	
	var self = this;
	canvas.onmousemove = function(event) { self.mousemove(event); };
	canvas.onmouseup = function(event) { self.mouseclick(event); };
	$(window).resize(function () { self.resize(); });
}

Pamela.prototype.updateNodes = function(entities) {

	// copy current nodes
	var curN = this.nodes;
	
	// reset current nodes
	this.nodes = [];

	while (curN.length > 0) {
		var n = curN.pop();
		
		// remove dead nodes
		if (n.isDead)
			continue;
		
		// keep norbert around always
		if (n == this.norbertNode) {
			this.nodes.push(n);
			continue;
		}

		// was around and keep around?
		var found = false; 		
		for (var i = 0; i < entities.length; i++) {

			if (entities[i] != n.name)
				continue;

			this.nodes.push(n);
			entities[i] = null;
			found = true;
			break; 
		}		
		
		// no longer around
		if (!found) {
			n.setMode("dying");
			this.nodes.push(n);
		}
	}
	
	// wasn't around before
	for (var i = 0; i < entities.length; i++) {
		if (entities[i] == null)
			continue;
		this.nodes.push(new Node(entities[i]));
	}
};

Pamela.prototype.millis = function() { 
	return (new Date).getTime(); 
};

Pamela.prototype.animate = function(secs) {
	return -0.5 + (this.millis() % secs) / secs;
};

Pamela.prototype.start = function() {
	if (this.play) return;
	this.play = true;
	this.updateEntries();
	this.fire();
};

Pamela.prototype.mousemove = function(event) {
	this.buttons.mousemove(event);
	this.mouse.x = event.clientX;
	this.mouse.y = event.clientY;
};

Pamela.prototype.mouseclick = function(event) {
	this.buttons.mouseclick(event);
};

Pamela.prototype.fire = function() {
	if (!this.play) return;
	var self = this;
	this.timer = setTimeout(function() { self.draw(); }, 50);
};

Pamela.prototype.stop = function() {
	clearTimeout(this.timer);
	clearTimeout(this.entriesTimer);
	this.play = false;
};

Pamela.prototype.draw = function() {
	
	if (!this.play)
		return;
		
	var m = this.m;
		
	m.resetMatrix();
	var startAnimation = 1 - ((this.millis() - this.startTime) / 3000);
	if (startAnimation > 0) { 
		startAnimation *= startAnimation;
		m.translate((width / 4) * startAnimation, 0 ,0);
		m.translate(0, 0, Math.PI * startAnimation);
	}
	
	m.translate(0, 0, -width / 5);
	m.rotateY(this.animate(7000) * 2 * Math.PI);
		m.rotateX(this.animate(12000) * 2 * Math.PI);
	
	m.rotateY((this.mouse.x % width) / width * Math.PI);
	m.rotateX((this.mouse.y % height) / height * Math.PI);
	
	for (var i = 0; i < this.nodes.length; i++) {
		this.nodes[i].project(m);
	}
	
	this.nodes.sort(function(a, b) {
		return a.projection.z - b.projection.z;
	});		

	context.save();
	context.fillStyle = "#333";
	context.fillRect( 0, 0, width, height );
	context.translate(width / 2, height / 2);
	for (var i = 0; i < this.nodes.length; i++) {
		this.nodes[i].draw();
	}
	context.restore();
	
	this.buttons.draw();

	this.fire();
};

Pamela.prototype.resize = function() {
	var canvas = $("#pamela")[0];
	var windowWidth = window.innerWidth ? window.innerWidth : document.documentElement.clientWidth ? document.documentElement.clientWidth : document.body.clientWidth;
	var windowHeight = window.innerHeight ? window.innerHeight : document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body.clientHeight;
	canvas.width = windowWidth - 10;
	canvas.height = windowHeight - 10;
	width = context.canvas.clientWidth;
	height = context.canvas.clientHeight;
	this.buttons.reposition();
};

Pamela.prototype.updateEntries = function() {
	var self = this;
	$.getJSON("macs.php", function(data) { 
		self.updateNodes(data);	
	});
	self.entriesTimer = setTimeout(function() { self.updateEntries(); }, 20000);
};

$(document).ready(function() {
	var canvas = $("#pamela")[0];
	var pamela = new Pamela(canvas);
	pamela.start();
});