dynmap/web/js/timeofdayclock.js

componentconstructors['timeofdayclock'] = function(dynmap, configuration) {
	var me = this;
	
	var timeout = null;
	
	var element = $('<div/>')
		.addClass('largeclock')
		.addClass('timeofday')
		.appendTo(dynmap.options.container);
	
	var sun = $('<div/>')
		.height(60)
		.addClass('timeofday')
		.addClass('sun')
		.css('background-position', (-150) + 'px ' + (-150) + 'px')
		.appendTo(element);
	
	var moon = $('<div/>')
		.height(60)
		.addClass('timeofday')
		.addClass('moon')
		.css('background-position', (-150) + 'px ' + (-150) + 'px')
		.appendTo(sun);
	
	if (configuration.showdigitalclock) {
		var clock = $('<div/>')
			.addClass('timeofday')
			.addClass('digitalclock')
			.appendTo(element);
		
		var formatTime = function(time) {
			var formatDigits = function(n, digits) {
				var s = n.toString();
				while (s.length < digits) {
					s = '0' + s;
				}
				return s;
			}
			return formatDigits(time.hours, 2) + ':' + formatDigits(time.minutes, 2);
		};
		
		var setTime = function(servertime) {
			if (timeout != null) {
				window.clearTimeout(timeout);
				timeout = null;
			}
			var time = getMinecraftTime(servertime);
			clock
				.addClass(time.day ? 'day' : 'night')
				.removeClass(time.night ? 'day' : 'night')
				.text(formatTime(time));
			
			if (timeout == null) {
				timeout = window.setTimeout(function() {
					timeout = null;
					setTime(time.servertime+(1000/60));
				}, 700);
			}
		};
		
		$(dynmap).bind('worldupdated', function(event, update) {
			setTime(update.servertime);
		});
	}
	$(dynmap).bind('worldupdated', function(event, update) {
		var sunangle;
		var time = update.servertime;
		
		if(time > 23100 || time < 12900) {
			//day mode
			var movedtime = time + 900;
			movedtime = (movedtime >= 24000) ? movedtime - 24000 : movedtime;
			//Now we have 0 -> 13800 for the day period
			//Divide by 13800*2=27600 instead of 24000 to compress day
		    sunangle = ((movedtime)/27600 * 2 * Math.PI);
		} else {
			//night mode
			var movedtime = time - 12900;
			//Now we have 0 -> 10200 for the night period
			//Divide by 10200*2=20400 instead of 24000 to expand night
		    sunangle = Math.PI + ((movedtime)/20400 * 2 * Math.PI);
		}
		
		var moonangle = sunangle + Math.PI;
		
		sun.css('background-position', (-50 * Math.cos(sunangle)) + 'px ' + (-50 * Math.sin(sunangle)) + 'px');
		moon.css('background-position', (-50 * Math.cos(moonangle)) + 'px ' + (-50 * Math.sin(moonangle)) + 'px');
	});
};