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CoreWorld = new function () { function d() { if (o == false) { o = true; q = []; k = 0; t = 1; ms = I = J = 0; b.energy = 30; m.style.display = "none"; l.style.display = "block"; D = (new Date).getTime() } } function h(a) { switch (a.keyCode) { case 32: if (!u && b.energy > 15) b.energy -= 4; u = true; a.preventDefault() } } function x(a) { switch (a.keyCode) { case 32: u = false; a.preventDefault() } } function R(a) { y = a.clientX - (window.innerWidth - e) * 0.5 - 6; z = a.clientY - (window.innerHeight - f) * 0.5 - 6 } function S() {} function T() {} function U(a) { if (a.touches.length == 1) { a.preventDefault(); y = a.touches[0].pageX - (window.innerWidth - e) * 0.5; z = a.touches[0].pageY - (window.innerHeight - f) * 0.5 } } function V(a) { if (a.touches.length == 1) { a.preventDefault(); y = a.touches[0].pageX - (window.innerWidth - e) * 0.5 - 60; z = a.touches[0].pageY - (window.innerHeight - f) * 0.5 - 30 } } function W() {} function K() { e = r ? window.innerWidth : 900; f = r ? window.innerHeight : 550; b.position.x = e * 0.5; b.position.y = f * 0.5; i.width = e; i.height = f; n.width = e; n.height = f; var a = (window.innerWidth - e) * 0.5, g = (window.innerHeight - f) * 0.5; i.style.position = "absolute"; i.style.left = a + "px"; i.style.top = g + "px"; n.style.position = "absolute"; n.style.left = a + 6 + "px"; n.style.top = g + 6 + "px"; if (r) { m.style.left = "0px"; m.style.top = "0px"; l.style.left = "0px"; l.style.top = "0px" } else { m.style.left = a + 6 + "px"; m.style.top = g + 200 + "px"; l.style.left = a + 6 + "px"; l.style.top = g + 6 + "px" } } function L(a, g, v, j) { for (j = j + Math.random() * j; --j >= 0;) { var w = new Point; w.position.x = a.x + Math.sin(j) * v; w.position.y = a.y + Math.cos(j) * v; w.velocity = { x: g.x + (-1 + Math.random() * 2), y: g.y + (-1 + Math.random() * 2) }; w.alpha = 1; A.push(w) } } function M() { var a = (new Date).getTime(); E++; if (a > F + 1E3) { B = Math.min(Math.round(E * 1E3 / (a - F)), s); F = a; E = 0 } a = 0.01 + Math.max(Math.min(B, s), 0) / s * 0.99; a *= a; c.clearRect(0, 0, i.width, i.height); if (o) { t += 0.0015; k += 0.4 * t * a; J++; I += 0.4 * t * a; a = Math.atan2(z - b.position.y, y - b.position.x); if (Math.abs(a - b.angle) > Math.PI) b.angle = a; b.angle += (a - b.angle) * 0.2; b.energyRadiusTarget = b.energy / 100 * b.radius * 0.8; b.energyRadius += (b.energyRadiusTarget - b.energyRadius) * 0.2; b.shield = { x: b.position.x + Math.cos(b.angle) * b.radius, y: b.position.y + Math.sin(b.angle) * b.radius }; c.beginPath(); c.strokeStyle = "#648d93"; c.lineWidth = 3; c.arc(b.position.x, b.position.y, b.radius, b.angle + 1.6, b.angle - 1.6, true); c.stroke(); c.beginPath(); c.fillStyle = "#249d93"; c.strokeStyle = "#3be2d4"; c.lineWidth = 1.5; b.updateCore(); var g = b.coreNodes.concat(); g.push(b.coreNodes[0]); for (a = 0; a < g.length; a++) { p = g[a]; p2 = g[a + 1]; p.position.x += (b.position.x + p.normal.x + p.offset.x - p.position.x) * 0.2; p.position.y += (b.position.y + p.normal.y + p.offset.y - p.position.y) * 0.2; if (a == 0) c.moveTo(p.position.x, p.position.y); else p2 && c.quadraticCurveTo(p.position.x, p.position.y, p.position.x + (p2.position.x - p.position.x) / 2, p.position.y + (p2.position.y - p.position.y) / 2) } c.closePath(); c.fill(); c.stroke() } if (u && b.energy > 10) { b.energy -= 0.1; c.beginPath(); c.fillStyle = "rgba( 0, 100, 100, " + b.energy / 100 * 0.9 + " )"; c.arc(b.position.x, b.position.y, b.radius, 0, Math.PI * 2, true); c.fill() } var v = g = 0; for (a = 0; a < q.length; a++) { p = q[a]; p.position.x += p.velocity.x; p.position.y += p.velocity.y; p.alpha += (1 - p.alpha) * 0.1; if (p.type == G) c.fillStyle = "rgba( 255, 0, 0, " + p.alpha + " )"; if (p.type == H) c.fillStyle = "rgba( 0, 235, 190, " + p.alpha + " )"; c.beginPath(); c.arc(p.position.x, p.position.y, p.size / 2, 0, Math.PI * 2, true); c.fill(); var j = Math.atan2(p.position.y - b.position.y, p.position.x - b.position.x); if (o) { j = Math.abs(j - b.angle); if (j > Math.PI) j = Math.PI * 2 - j; if (j < 1.6) if (p.distanceTo(b.position) > b.radius - 5 && p.distanceTo(b.position) < b.radius + 5) p.dead = true; if (u && p.distanceTo(b.position) < b.radius && b.energy > 11) { p.dead = true; k += 4 } if (p.distanceTo(b.position) < b.energyRadius + p.size * 0.5) { if (p.type == G) b.energy -= 6; if (p.type == H) { b.energy += 8; k += 30 } b.energy = Math.max(Math.min(b.energy, 100), 0); p.dead = true } } if (p.position.x < -p.size || p.position.x > e + p.size || p.position.y < -p.size || p.position.y > f + p.size) p.dead = true; if (p.dead) { L(p.position, { x: (p.position.x - b.position.x) * 0.02, y: (p.position.y - b.position.y) * 0.02 }, 5, 5); q.splice(a, 1); a-- } else { p.type == G && g++; p.type == H && v++ } } if (g < 1 * t && (new Date).getTime() - N > 100) { q.push(O(new Enemy)); N = (new Date).getTime() } v < 1 && Math.random() > 0.996 && q.push(O(new Energy)); for (a = 0; a < A.length; a++) { p = A[a]; p.position.x += p.velocity.x; p.position.y += p.velocity.y; p.alpha -= 0.02; c.fillStyle = "rgba(255,255,255," + Math.max(p.alpha, 0) + ")"; c.fillRect(p.position.x, p.position.y, 1, 1); p.alpha <= 0 && A.splice(a, 1) } if (o) { scoreText = "Score: <span>" + Math.round(k) + "</span>"; scoreText += " Time: <span>" + Math.round(((new Date).getTime() - D) / 1E3 * 100) / 100 + "s</span>"; scoreText += ' <p class="fps">FPS: <span>' + Math.round(B) + " (" + Math.round(Math.max(Math.min(B / s, s), 0) * 100) + "%)</span></p>"; l.innerHTML = scoreText; if (b.energy === 0) { L(b.position, { x: 0, y: 0 }, 10, 40); o = false; (new Date).getTime(); m.style.display = "block"; k = Math.round(k); P.innerHTML = "Game Over! (" + k + " points)"; scoreText = "Score: <span>" + Math.round(k) + "</span>"; scoreText += " Time: <span>" + Math.round(((new Date).getTime() - D) / 1E3 * 100) / 100 + "s</span>"; l.innerHTML = scoreText } } } function O(a) { switch (Math.round(Math.random() * 3)) { case 0: a.position.x = 10; a.position.y = f * Math.random(); break; case 1: a.position.x = e * Math.random(); a.position.y = 10; break; case 2: a.position.x = e - 10; a.position.y = f * Math.random(); break; case 3: a.position.x = e * Math.random(); a.position.y = f - 10 } a.speed = Math.min(Math.max(Math.random(), 0.6), 0.75); a.velocity.x = (b.position.x - a.position.x) * 0.0060 * a.speed; a.velocity.y = (b.position.y - a.position.y) * 0.0060 * a.speed; if (a.type == "enemy") { a.velocity.x *= 1 + Math.random() * 0.1; a.velocity.y *= 1 + Math.random() * 0.1 } a.alpha = 0; return a } var r = navigator.userAgent.toLowerCase().indexOf("android") != -1 || navigator.userAgent.toLowerCase().indexOf("iphone") != -1 || navigator.userAgent.toLowerCase().indexOf("ipad") != -1, e = r ? window.innerWidth : 900, f = r ? window.innerHeight : 550, G = "enemy", H = "energy", s = 60, i, c, n, C, l, m, P, Q, q = [], A = [], b, y = window.innerWidth - e, z = window.innerHeight - f, u = false, o = false, k = 0, D = 0, t = 1, N = 0, J = 0, I = 0, B = 0, F = (new Date).getTime(), E = 0; this.init = function () { i = document.getElementById("world"); n = document.getElementById("background-canvas"); m = document.getElementById("panels"); l = document.getElementById("status"); document.getElementById("message"); P = document.getElementById("title"); Q = document.getElementById("startButton"); if (i && i.getContext) { c = i.getContext("2d"); C = n.getContext("2d"); document.addEventListener("mousemove", R, false); document.addEventListener("mousedown", S, false); document.addEventListener("mouseup", T, false); i.addEventListener("touchstart", U, false); document.addEventListener("touchmove", V, false); document.addEventListener("touchend", W, false); window.addEventListener("resize", K, false); Q.addEventListener("click", d, false); document.addEventListener("keydown", h, false); document.addEventListener("keyup", x, false); b = new Player; K(); if (r) { document.getElementById("sharing").style.display = "none"; document.getElementById("panel").style.display = "none"; l.style.width = e + "px"; i.style.border = "none"; setInterval(M, 1E3 / 30) } else setInterval(M, 1E3 / s); var a = C.createRadialGradient(e * 0.5, f * 0.5, 0, e * 0.5, f * 0.5, 500); a.addColorStop(0, "rgba(0, 70, 70, 1)"); a.addColorStop(1, "rgba(0, 8, 14, 1)"); C.fillStyle = a; C.fillRect(0, 0, e, f) } } }; function Point(d, h) { this.position = { x: d, y: h } } Point.prototype.distanceTo = function (d) { var h = d.x - this.position.x; d = d.y - this.position.y; return Math.sqrt(h * h + d * d) }; Point.prototype.clonePosition = function () { return { x: this.position.x, y: this.position.y } }; function Player() { this.position = { x: 0, y: 0 }; this.length = 15; this.energy = 30; this.energyRadiusTarget = this.energyRadius = 0; this.radius = 60; this.angle = 0; this.coreQuality = 16; this.coreNodes = [] } Player.prototype = new Point; Player.prototype.updateCore = function () { var d, h; if (this.coreNodes.length == 0) for (d = 0; d < this.coreQuality; d++) { h = { position: { x: this.position.x, y: this.position.y }, normal: { x: 0, y: 0 }, normalTarget: { x: 0, y: 0 }, offset: { x: 0, y: 0 } }; this.coreNodes.push(h) } for (d = 0; d < this.coreQuality; d++) { h = this.coreNodes[d]; var x = d / this.coreQuality * Math.PI * 2; h.normal.x = Math.cos(x) * this.energyRadius; h.normal.y = Math.sin(x) * this.energyRadius; h.offset.x = Math.random() * 5; h.offset.y = Math.random() * 5 } }; function Enemy() { this.position = { x: 0, y: 0 }; this.velocity = { x: 0, y: 0 }; this.size = 6 + Math.random() * 4; this.speed = 1; this.type = "enemy" } Enemy.prototype = new Point; function Energy() { this.position = { x: 0, y: 0 }; this.velocity = { x: 0, y: 0 }; this.size = 10 + Math.random() * 6; this.speed = 1; this.type = "energy" } Energy.prototype = new Point; CoreWorld.init();
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="description" content="Core - an HTML5 canvas game. Protect the core!" /> <meta name="keywords" content="hakim, elhattab, hakim el hattab, hakim elhattab, interactive, developer, flash, html5, canvas, web, experiments" /> <meta name="author" content="Hakim El Hattab" /> <meta http-equiv="X-UA-Compatible" content="chrome=1"/> <meta name="apple-mobile-web-app-capable" content="yes"/> <meta name = "viewport" content = "width = 450"/> <title>Core - an HTML5 canvas game.</title> </head> <body> <div id="panel"> <h2><a href="../../../">Experiments</a> / Core / 01</h2> <p>A sibling game to <a class="external" href="../../sinuous/01">Sinuous</a>.<br/>Your objective is to protect the core from <br/>red dots while letting green ones through.<br/>Press & hold <b>SPACE</b> for shield.</p> </div> <div id="status" class="ui"></div><div id="panels"><div id="message" class="ui"><h2 id="title">Core</h2>A sibling game to <a class="external" href="../../sinuous/01">Sinuous</a>.<ul><li>1. Protect the core.</li><li>2. Gather energy (green dots).</li><li>2. Hold SPACE for shield (depletes energy).</li></ul><a href="#" id="startButton">Start</a></div></div><canvas class="background" id="background-canvas"></canvas> <canvas id="world"> <p class="noCanvas">You need a <a href="http://www.google.com/chrome">modern browser</a> to view this.</p> </canvas> </body> </html>
html{color:#000;background:#222222;} a{cursor:pointer;} html,body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,textarea,p,blockquote,th,td{margin:0;padding:0;} table{border-collapse:collapse;border-spacing:0;} fieldset,img{border:0;} address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;} li{list-style:none;} caption,th{text-align:left;} /* h1,h2,h3,h4,h5,h6{font-size:100%;} */ q:before,q:after{content:'';} abbr,acronym {border:0;font-variant:normal;} sup {vertical-align:text-top;} sub {vertical-align:text-bottom;} input,textarea,select{font-family:inherit;font-size:inherit;font-weight:inherit;outline-style:none;outline-width:0pt;} legend{color:#000;} a:focus,object,h1,h2,h3,h4,h5,h6{-moz-outline-style: none; border:0px;} strong {font-weight: bold;} body, html { background-color: #010c12; } canvas { border: 6px #333333 solid; cursor: crosshair; z-index: 1; } canvas.background { border: none; z-index: 0; } .ui { font-family: Arial, Helvetica, sans-serif; font-size: 10px; color: #999999; text-align: left; padding: 8px; background-color: rgba(0,0,0,0.5); float: left; } #status { width: 884px; height: 15px; padding: 8px; display: none; position: absolute; z-index: 2; } #status span { color: #bbbbbb; font-weight: bold; margin-right: 5px; } #status .fps { float: right; } #panels { width: 100%; position: absolute; z-index: 3; } #message { padding: 16px; margin-top: 10px; width: 225px; } .ui h2 { margin-bottom: 20px; color: #eeeeee; } .ui ul { margin: 10px 0; } .ui ul li { margin: 0 0 2px 0; } .ui a { outline: none; font-family: Arial, Helvetica, sans-serif; font-size: 38px; text-decoration: none; color: #bbbbbb; padding: 2px; display: block; transition: all .18s linear; -o-transition: all .18s linear; -moz-transition: all .18s linear; -webkit-transition: all .18s linear; } .ui a:hover { color: #ffffff; background-color: #000000; transition: all .18s linear; -o-transition: all .18s linear; -moz-transition: all .18s linear; -webkit-transition: all .18s linear; } .ui a.external { outline: none; font-family: Arial, Helvetica, sans-serif; font-size: 10px; font-weight: bold; text-decoration: none; color: #bbbbbb; display: inline; padding: 0; } .ui a.external:hover { color: #ffffff; } html { color:#000; background:#222222; } a { cursor:pointer; } html, body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, textarea, p, blockquote, th, td { margin:0; padding:0; } table { border-collapse:collapse; border-spacing:0; } fieldset, img { border:0; } address, caption, cite, code, dfn, em, strong, th, var { font-style:normal; font-weight:normal; } li { list-style:none; } caption, th { text-align:left; } q:before, q:after { content:''; } abbr, acronym { border:0; font-variant:normal; } sup { vertical-align:text-top; } sub { vertical-align:text-bottom; } input, textarea, select { font-family:inherit; font-size:inherit; font-weight:inherit; outline-style:none; outline-width:0pt; } legend { color:#000; } a:focus, object, h1, h2, h3, h4, h5, h6 { -moz-outline-style:none; border:0px; } strong { font-weight:bold; } @font-face { font-family:Delicious; font-weight:bold; src:url('../../../assets/fonts/Delicious-Bold.otf'); } body { overflow:hidden; font-family:Georgia, Helvetica, Arial, sans-serif; color:#333333; font-size:11px; } a, a:hover { transition:all .08s linear; -o-transition:all .08s linear; -moz-transition:all .08s linear; -webkit-transition:all .08s linear; padding:1px; } p.noCanvas { color:#999999; font-size:24px; text-align:center; margin-top:150px; } #panel { position:absolute; margin:5px; padding:5px; z-index:99; background-color:#FFFECF; border:1px solid #e1e0af; } #panel a { color:#333333; background-color:#FFFECF; text-decoration:underline; } #panel a:hover { color:#FFFECF; background-color:#333333; } #panel a.versionLink { padding:1px; text-decoration:underline; } #panel a.versionLink.selected { color:#888888; text-decoration:none; } #panel p { padding:0px 5px 5px 5px; line-height:1.6em; } #panel h2 { font-size:20px; font-weight:bold; font-family:Delicious, Helvetica, sans-serif; padding:5px 5px 5px 5px; } #chromeBadge { position:absolute; bottom:0; right:0; padding:4px; } #sharing { background-color:#FFFECF; position:absolute; top:0; right:0; margin:5px; padding:7px 0 4px 10px; z-index:98; border:1px solid #e1e0af; } #facebook_button { float:left; } #retweet_button { float:left; } #flattr_button { float:right; margin: 1px 10px 0 4px; }
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