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245 lines
5.9 KiB
245 lines
5.9 KiB
<!DOCTYPE html>
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<meta charset="utf-8" />
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<head>
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<meta name="apple-mobile-web-app-capable" content="yes" />
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<meta name="viewport" content="user-scalable=no, width=device-width" />
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<title>WebSocket Test</title>
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<style type="text/css">
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body {
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color: #888;
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background: #000;
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font-size: 16pt;
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margin: 0px;
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overflow: hidden;
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height: 100%;
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}
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a {
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color: #fff;
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text-shadow: 0px 1px 1px #f80;
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}
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#text {
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position: relative;
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text-align: center;
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}
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#ballscreen {
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position: absolute;
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background-color: rgba(0.0, 0.0, 0.0, 0.0);
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width: 1000px;
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height: 600px;
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border: 1px solid black;
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}
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.ball {
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-webkit-transition: left 0.1s linear, top 0.1s linear;
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position: absolute;
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}
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.ball .bullet {
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width: 10px;
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height: 10px;
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position: absolute;
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left: -5px;
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top: -5px;
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border-radius: 5px;
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background-color: #f00;
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}
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#svgscreen {
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position: absolute;
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width: 1000px;
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height: 600px;
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}
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#svgscreen line.guitar {
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stroke: rgb(255,127,0);
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stroke-width: 2;
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}
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#svgscreen line.solid {
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stroke: rgb(0,127,255);
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stroke-width: 2;
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}
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</style>
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<script type="text/javascript" src="connection.js"></script>
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<script type="text/javascript" src="websocket.js"></script>
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<script type="text/javascript" src="drawing.js"></script>
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<script type="text/javascript" src="rendering.js"></script>
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<script language="javascript" type="text/javascript">
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var myName;
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var websocket;
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var ballscreen;
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var svgscreen;
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var current_svgline;
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var balls_online = new Array();
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var svglines_online = new Array();
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var speed = 100;
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var line_kind = 0;
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function init() {
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myName = document.getElementById('loginname').value;
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console.log(myName);
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var login = document.getElementById('login');
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login.parentNode.removeChild(login);
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var statusbar = document.getElementById('status');
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ballscreen = document.getElementById("ballscreen");
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svgscreen = document.getElementById("svgscreen");
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statusbar.innerHTML = "connecting..."
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if ("WebSocket" in window){
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init_drawing(ballscreen, drawStart, drawMove, drawEnd, drawRemove);
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websocket = init_websocket(statusbar, onOpen, onMessage);
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} else {
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statusbar.innerHTML = 'No websockets :(. This means that you either use <em>Internet Explorer</em> or <em>Android</em>. In both cases, I suggest that you use <a href="http://www.google.com/chrome/">Chrome</a> or <a href="http://www.getfirefox.net/">Firefox</a>!';
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}
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return false;
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}
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function onOpen(evt) {
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updateUser();
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}
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function onMessage(evt) {
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var ret = JSON.parse(evt.data);
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var balls = ret.balls;
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var lines = ret.lines;
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updateBalls(balls);
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updateLines(lines);
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setTimeout(function(){
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poll();
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}, speed);
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}
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function updateBalls(balls){
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// Because we use transitions for the balls
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// we really update them, and only delete the ones which are absent
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for(i in balls_online){
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balls_online[i].should_remove = true;
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}
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for (var i = balls.length - 1; i >= 0; i--) {
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var ball = document.getElementById(balls[i].information);
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if(ball){
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ball.style.left = balls[i].position.x + "px";
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ball.style.top = balls[i].position.y + "px";
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ball.should_remove = false;
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} else {
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var ball = document.createElement('div');
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ball.should_remove = false;
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ball.id = balls[i].information;
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ball.className = 'ball';
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ball.innerHTML = '<div class="bullet"></div>';
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ball.style.left = balls[i].position.x + "px";
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ball.style.top = balls[i].position.y + "px";
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ballscreen.appendChild(ball);
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balls_online.push(ball);
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}
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}
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for (var i = balls_online.length - 1; i >= 0; i--) {
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if(balls_online[i].should_remove){
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ballscreen.removeChild(balls_online[i]);
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balls_online.splice(i, 1);
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}
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};
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}
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function updateLines(lines){
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// Simply delete and redraw them :)
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for (var i = svglines_online.length - 1; i >= 0; i--) {
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svgscreen.removeChild(svglines_online[i]);
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};
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svglines_online = new Array();
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for (var i = lines.length - 1; i >= 0; i--) {
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var current = addLine(lines[i], svgscreen);
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if(lines[i].line_kind == 0){
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current.setAttribute('class', "guitar");
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} else {
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current.setAttribute('class', "solid");
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}
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svglines_online.push(current);
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};
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}
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function drawStart(line){
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current_svgline = addLine(line, svgscreen);
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if(line_kind == 0){
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current_svgline.setAttribute('class', "guitar");
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} else {
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current_svgline.setAttribute('class', "solid");
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}
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}
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function drawMove(line){
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updateLine(current_svgline, line);
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}
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function drawEnd(line){
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drawRemove(line);
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line.line_kind = line_kind;
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var packet = {
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command: 'add line',
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data: line
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};
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websocket.send(JSON.stringify(packet));
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}
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function drawRemove(line){
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if(current_svgline){
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svgscreen.removeChild(current_svgline);
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current_svgline = null;
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}
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}
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function updateUser() {
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var myself = {
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name: myName,
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size: {width: window.innerWidth, height: window.innerHeight}
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};
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var packet = {
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command: 'update user',
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data: myself
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};
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websocket.send(JSON.stringify(packet));
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}
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function poll(){
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var packet = {
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command: 'poll'
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};
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websocket.send(JSON.stringify(packet));
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}
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function changeKind() {
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line_kind = line_kind + 1;
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line_kind = line_kind % 2;
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var kind_str = "guitar";
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if(line_kind == 1) kind_str = "solid"
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document.getElementById("line_kind").innerHTML = kind_str;
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}
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setTimeout(function (){
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window.scrollTo(0, 1);
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}, 0);
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</script>
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</head>
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<body ontouchmove="prevent_scrolling(event);">
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<div id="login">
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<form onSubmit="return init()">
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Name: <input type="text" id="loginname"><br/>
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<input type="submit" value="login">
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</form>
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</div>
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<svg id="svgscreen" xmlns="http://www.w3.org/2000/svg" version="1.1">
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<rect width="100%" height="100%" style="fill:rgb(255, 255, 255); opacity:0.1; stroke-width:1; stroke:rgb(0,0,0)"/>
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</svg>
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<div id="ballscreen"></div>
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<div id="text">
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(<span id="status">provide your name</span>)
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<a onClick="changeKind();" href="#">Change line kind (to <span id="line_kind">guitar</span>)</a>
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</div>
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</body>
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</html>
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