SVG pong

Developer
Theun
Size
3,818 Kb
Views
64,768
  1. SVG pong Previews
  2. SVG pong HTML Codes
  3. SVG pong CSS Codes
  4. SVG pong JS Codes

How do I make an svg pong?

Found this on github, adapted the colors to make it more like the magnificent device I used to have. About 36 years ago ;). What is a svg pong? How do you make a svg pong? This script and codes were developed by Theun on 23 July 2022, Saturday.

SVG pong Previews
IQ Test

SVG pong - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>SVG pong</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head> <meta charset="utf-8" /> <title>Pong using SVG and JavaScript</title> <script type="text/javascript" src="svgpong.js"></script> <link rel="stylesheet" type="text/css" href="svgpong.css" />
</head>
<body onload="svgpong()"> <svg id="field" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 800 600" preserveAspectRatio="xMidYMid"> <rect id="background" width="800" height="600"></rect><!-- Workaround strange event behavior--> <text class="score" id="playerScore" x="200" y="50">0</text> <text class="score" x="400" y="50">-</text> <text class="score" id="computerScore" x="600" y="50">0</text> <rect id="paddleLeft" width="20" height="100" x="10" y="350"></rect> <rect id="paddleRight" width="20" height="100" x="770" y="350"></rect> <circle id="ball" r="5" cx="400" cy="300"></circle> </svg>
</body>
</html> <script src="js/index.js"></script>
</body>
</html>

SVG pong - Script Codes CSS Codes

body { margin: 0px; background: #000;
}
#background { fill: #222;
}
#field { left:0; top:0; width:100%; height:100%; position : absolute; display: inline-block; cursor: none; fill: white;
}
.score { font-family : Impact, Charcoal, sans-serif; text-anchor: middle; font-size : 30pt; fill: white;
}

SVG pong - Script Codes JS Codes

svgpong = function () { var field = document.getElementById('field'); if (field === null) { alert("Couldn't find svg graphic"); return; } (function () { var requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || window.msRequestAnimationFrame; window.requestAnimationFrame = requestAnimationFrame; })(); // Wrap SVG elements for easier access function wrapPaddle(name) { var e = document.getElementById(name) var r = {} r.width = e.width.baseVal.value r.height = e.height.baseVal.value function update() { r.right = r.x + r.width r.left = r.x r.top = r.y r.bottom = r.y + r.height } Object.defineProperty(r, "x", { get: function () { return e.x.baseVal.value }, set: function (val) { e.x.baseVal.value = val; update(); } }) Object.defineProperty(r, "y", { get: function () { return e.y.baseVal.value }, set: function (val) { e.y.baseVal.value = val; update(); } }) Object.defineProperty(r, "cx", { get: function () { return r.x + r.width / 2;}, set: function (val) { r.x = val - r.width / 2; } }) Object.defineProperty(r, "cy", { get: function () { return r.y + r.height / 2; }, set: function (val) { r.y = val - r.height / 2; } }) update(); return r; } var player = wrapPaddle('paddleLeft') var computer = wrapPaddle('paddleRight') var ball = function () { var e = document.getElementById('ball') var r = {} r.dx = 0 r.dy = 0 function update() { r.right = r.cx + r.r; r.left = r.cx - r.r; r.top = r.cy - r.r; r.bottom = r.cy + r.r; } Object.defineProperty(r, "cx", { get: function () { return e.cx.baseVal.value }, set: function (val) { e.cx.baseVal.value = val; update(); } }) Object.defineProperty(r, "cy", { get: function () { return e.cy.baseVal.value }, set: function (val) { e.cy.baseVal.value = val; update(); } }) Object.defineProperty(r, "r", { get: function () { return e.r.baseVal.value }, set: function (val) { e.r.baseVal.value = val; update(); } }) update(); return r; }(); var playerScore= document.getElementById('playerScore') var computerScore = document.getElementById('computerScore') var box = field.viewBox.baseVal; // Initial ball state vector init var startX = box.width / 2; var startY = box.height / 2; var clock = function () { var last = Date.now(); return { 'reset': function () { var now = Date.now(); var result = now - last; last = now; return result; } } }() var animSpeed = 0.1; // Pix per ms var computerSpeed = 7; var scorePlayer = 0; var scoreComputer = 0; var inputY = 0; var vertCenter = box.height / 2; var horCenter = box.width / 2; var deflectFactor = 0.1; function collideBallWith(what) { if (ball.bottom < what.top || ball.top > what.bottom) { // No collision return; } var voff = ball.cy - what.cy; if (ball.dx > 0) { // Collide with left border if (ball.right >= what.left && ball.left < what.right) { // Collision ball.cx -= ball.right - what.left; ball.dx *= -1; ball.dy += voff * deflectFactor; } } else { // Collide with right border if (ball.left <= what.right && ball.right > what.left) { // Collision ball.cx += what.right - ball.left; ball.dx *= -1; ball.dy += voff * deflectFactor; } } } function boundPaddle(paddle) { if (paddle.bottom > box.height) { paddle.y = box.height - paddle.height; } else if (paddle.top < 0) { paddle.y = 0; } } function scored() { ball.dx = 0; ball.dy = 0; ball.cx = startX; ball.cy = startY; setTimeout(function () { if (Math.random() > 0.5) ball.dx = 5; else ball.dx = -5; ball.dy = 5 - Math.random() * 10; }, 3000); } scored(); // Setup var animate = function () { var suspense = field.suspendRedraw(6000); var anim_factor = clock.reset() * animSpeed ball.cx += ball.dx * anim_factor; ball.cy += ball.dy * anim_factor; // Player movement player.cy = inputY; boundPaddle(player) // Computer ki if (ball.dx > 0) { var offset = ball.cy - computer.cy; var motivation = Math.min(1, Math.pow(Math.abs(offset) / (computer.height / 4), 2)); } else { var offset = vertCenter - computer.cy; var motivation = Math.abs(offset) > vertCenter / 4 ? 0.5 : 0; } if (offset > 0) { computer.cy += computerSpeed * anim_factor * motivation; } else { computer.cy -= computerSpeed * anim_factor * motivation; } boundPaddle(computer) // Paddle bounding collideBallWith(player) collideBallWith(computer) // Wall bounding and scoring if (ball.right >= box.width) { ball.cx -= ball.right - box.width; ball.dx *= -1; // Score scorePlayer += 1; playerScore.textContent = scorePlayer; scored() } else if (ball.left <= 0) { ball.cx -= ball.left; ball.dx *= -1; //Score scoreComputer += 1; computerScore.textContent = scoreComputer; scored() } if (ball.top <= 0) { ball.cy -= ball.top ball.dy *= -1; } else if (ball.bottom >= box.height) { ball.cy -= ball.bottom - box.height; ball.dy *= -1; } field.unsuspendRedraw(suspense); requestAnimationFrame(animate); } var matrix = field.getScreenCTM().inverse(); field.addEventListener("mousemove", function (event) { event.preventDefault(); var p = field.createSVGPoint(); p.x = event.clientX; p.y = event.clientY; var insvg = p.matrixTransform(matrix); inputY = insvg.y; }); field.addEventListener("touchmove", function (event) { event.preventDefault(); var p = field.createSVGPoint(); p.x = event.touches[0].clientX p.y = event.touches[0].clientY var insvg = p.matrixTransform(matrix); inputY = insvg.y; }); window.onresize = function (event) { matrix = field.getScreenCTM().inverse(); }; // Start animating requestAnimationFrame(animate);
}
SVG pong - Script Codes
SVG pong - Script Codes
Home Page Home
Developer Theun
Username tjoen
Uploaded July 23, 2022
Rating 3.5
Size 3,818 Kb
Views 64,768
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