var socket = io();
var cssMap, utilMap, domMap;
var ownId;
var visibleMap = [];
var range = 18; //Sichtweite

socket.on('connect', function () {
	ownId = socket.io.engine.id;
	console.log("connect!");
	socket.emit("getmap");
});

socket.on('disconnect', function () {
	$(".player").remove();
});

socket.on('getmap', function (conent) {
	cssMap = conent["cssMap"];
	$("#main").append('<div style="position:absolute; top:0px;left:0px; width:'+cssMap.length*32+'px; height:'+cssMap[0].length*32+'px"></div>');
	utilMap = conent["utilMap"];
	//console.log(map);
	domMap = $("#map");

	domMap.empty();

	// for(var w=0;w<cssMap.length;w++) {
	// 	for(var h=0;h<cssMap[w].length;h++) {
	// 		domMap.append('<img style="top:'+(w*32)+'px; left:'+(h*32)+'px; z-index:1;" src="./img/plain.png" i="'+w+'-'+h+'" class="sprite '+cssMap[w][h]+'">');
	// 	}
	// }

	// for(var w=0;w<utilMap.length;w++) {
	// 	for(var h=0;h<utilMap[w].length;h++) {
	// 		var utilTitle = utilMap[w][h];
	// 		if(utilTitle!="") {
	// 			domMap.append('<img style="top:'+(w*32)+'px; left:'+(h*32)+'px; z-index:2;" src="./img/plain.png" i="'+utilTitle+'" class="spriteUtils '+utilTitle+'">');
	// 		}
	// 	}
	// }

	var allPlayers = conent["allPlayers"];
	console.log(allPlayers);
	for(var id in allPlayers) {
		addNewPlayer(allPlayers[id], id);
	}
});

function addNewPlayer(player, id) {
	if($("#"+id).length==0) {
		var modeClass = "default_ship";
		var modeImg = "./img/default_ship.png";
		if(player["mode"]==1) {
			var modeClass = "guy";
			var modeImg = "./img/plain.png";
		}
		$("#main").append('<div class="player" id="'+id+'" style="position:absolute; top:'+player["y"]+'px; left:'+player["x"]+'px; width:7px; height:7px; z-index:100;"><img class="'+modeClass+'" src="'+modeImg+'"></div>');
	}
}

var oldmapX = null;
var oldmapY = null;
var picStep = 0;
var cnt = 0;
socket.on('setpos', function (allPlayers) {
	window.requestAnimationFrame(function() {
		for(var id in allPlayers) {
			var player = allPlayers[id];
			var playerElement = $("#"+id);
			var playerImg = playerElement.find("img");

			for(var i in player["special"]) {
				if(i == "modechange") {
					if(player["mode"] == 0) { //ship
						playerElement.find("img").attr("src","./img/default_ship.png");
						playerImg.removeClass (function (index, className) {
						    return (className.match (/(^|\s)guy\S+/g) || []).join(' ');
						});
						playerElement.find("img").removeClass("guy");
						playerElement.find("img").addClass("default_ship");
					} else { //land

						playerElement.find("img").removeClass("default_ship");
						playerElement.find("img").addClass("guy");
						playerElement.find("img").attr("src","./img/plain.png");
					}
				}
			}
			
			if(playerElement.length==1) {
				var playerX = Math.floor(player["x"]);
				var playerY = Math.floor(player["y"]);
				var oldPosY = Math.floor(parseFloat($("#"+id).css("top").split("px")[0]));
				var oldPosX = Math.floor(parseFloat($("#"+id).css("left").split("px")[0]));				
				if(oldPosY != playerY || oldPosX != playerX) {
					if(ownId === id) {
						window.scrollTo(playerElement.offset().left-$(window).width()/2, playerElement.offset().top-$(window).height()/2+100);
						var mapX = Math.floor(playerX/32);
						var mapY = Math.floor(playerY/32);

						if(oldmapX != mapX || oldmapY != mapY) {
							oldmapX = mapX;
							oldmapY = mapY;

							for(var x=mapX-range;x<mapX+range;x++) {
								if(x >= 0 && x < cssMap.length) {
									for(var y=mapY-range;y<mapY+range;y++) {
										if(y >= 0 && y < cssMap[0].length) {
											if(!visibleMap[x] || !visibleMap[x][y]) {
												var dist = getCoordDist(x,y,mapX,mapY);
												if(dist<=range) {
													domMap.append('<img style="top:'+(y*32)+'px; left:'+(x*32)+'px; z-index:1;" src="./img/plain.png" i="'+y+'-'+x+'" class="'+y+'-'+x+' sprite '+cssMap[y][x]+'">');
													var utilTitle = utilMap[y][x];
													if(utilTitle!="") {
														domMap.append('<img style="top:'+(y*32)+'px; left:'+(x*32)+'px; z-index:2;" src="./img/plain.png" i="'+utilTitle+'" class="'+y+'-'+x+' spriteUtils '+utilTitle+'">');
													}
													if(!visibleMap[x]) {
														visibleMap[x] = [];
													}
													visibleMap[x][y] = true;
												}
											}
										}
									}
								}
							}
							for(var x in visibleMap) {
								for(var y in visibleMap[x]) {
									if(visibleMap[x][y]) {
										var dist = getCoordDist(x,y,mapX,mapY);
										if(dist > range) {
											domMap.find("."+y+'-'+x).remove();
											visibleMap[x][y] = false;
										}
									}
								}
							}
						}
					}
					var top2Btn = 0;
					var left2right = 0;
					if(oldPosY > playerY) {
						top2Btn = -1;
					} else if(oldPosY < playerY) {
						top2Btn = 1;
					}
					if(oldPosX > playerX) {
						left2right = -1;
					} else if(oldPosX < playerX) {
						left2right = 1;
					}
					var angle = 0;
					if(player["mode"] == 0) { //ship
						var angle = Math.atan2(top2Btn, left2right);
					} else { //land
						cnt++;
						if(cnt%3==0)
							picStep++;
						if(picStep >= 3)
							picStep = 0;
						console.log(top2Btn+"-"+left2right)
						if(!playerImg.hasClass("guy"+top2Btn+"-"+left2right+"-"+picStep)) {
							playerImg.removeClass (function (index, className) {
							    return (className.match (/(^|\s)guy\S+/g) || []).join(' ');
							});
							playerImg.addClass("guy"+top2Btn+"-"+left2right+"-"+picStep);
						}
					}
					playerElement.css({"top":player["y"],"left":player["x"], "-webkit-transform" : "rotate("+angle+"rad)"});
				}
			}
		}
	});
});

function getCoordDist(x1,y1,x2,y2) {
	return Math.abs(Math.sqrt(Math.pow(y2-y1,2)+Math.pow(x2-x1,2)));
}

socket.on('newPlayer', function (newPlayer) {
	var player = newPlayer["player"];
	var id = newPlayer["id"];
	addNewPlayer(player, id);
});	

socket.on('playerDisc', function (id) {
	$("#"+id).remove();
});	


$(document).ready(function() {
	var viewportmeta = document.querySelector('meta[name="viewport"]');
    viewportmeta.content = 'user-scalable=NO, width=device-width, initial-scale=1.0';
    window.scrollTo(0, 0);
    var keys = {};
	
	$(document).keydown(function(event) {
		if (event.ctrlKey==true && (event.which == '61' || event.which == '107' || event.which == '173' || event.which == '109'  || event.which == '187'  || event.which == '189'  ) ) {
		        event.preventDefault();
		} 
		var key = event.which;
		if(key==37||key==38||key==39||key==40)
			event.preventDefault();
		if(!keys[key]) {
			
			if(key == 32) {
				socket.emit("actionKey",  key);
			} else {
				socket.emit("keyDown",  key);
			}
			keys[key] = true;
		}		
	});

	$( document ).keyup(function( event ) {
		var key = event.which;
		socket.emit("keyUp", key );
		keys[key] = false;
	});

	$(window).bind('mousewheel DOMMouseScroll', function (event) {
	       if (event.ctrlKey == true) {
	       		event.preventDefault();
	       }
	});


});