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-rw-r--r--.gitignore1
-rw-r--r--game.css33
-rw-r--r--game.html16
-rw-r--r--game.js243
-rw-r--r--package-lock.json647
-rw-r--r--package.json15
-rwxr-xr-xserver.js134
7 files changed, 1089 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3c3629e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/game.css b/game.css
new file mode 100644
index 0000000..e1d198a
--- /dev/null
+++ b/game.css
@@ -0,0 +1,33 @@
+html, body, #cvs {
+ margin: 0;
+ padding: 0;
+ width: 100%;
+ height: 100%;
+ overflow: hidden;
+}
+
+body {
+ position: relative;
+ font-family: sans-serif;
+}
+
+#overlay-container {
+ position: absolute;
+ left: 0;
+ top: 0;
+ right: 0;
+ bottom: 0;
+ align-items: center;
+ display: flex;
+ justify-content: center;
+}
+
+#status {
+ color: #ffffff;
+ font-size: 40pt;
+ text-shadow: 0px 0px 3px #000000;
+
+ user-select: none;
+ -moz-user-select: none;
+ -webkit-user-select: none;
+}
diff --git a/game.html b/game.html
new file mode 100644
index 0000000..ac0f0cf
--- /dev/null
+++ b/game.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<html>
+<head>
+<title>Pong MP</title>
+<meta charset="utf-8">
+<script src="/socket.io/socket.io.js"></script>
+<script src="/game.js"></script>
+<link rel="stylesheet" href="/game.css">
+</head>
+<body>
+<canvas id="cvs"></canvas>
+<div id="overlay-container">
+ <div id="status"></div>
+</div>
+</body>
+</html>
diff --git a/game.js b/game.js
new file mode 100644
index 0000000..4be774a
--- /dev/null
+++ b/game.js
@@ -0,0 +1,243 @@
+"use strict";
+
+var boardRatio = 1.5;
+var ballRadius = 0.01, padWidth = 0.01, padHeight = 0.15, padX = 0.01;
+var padBaseSpeed = 0.8;
+
+var gameId;
+var cvs, ctx, cvsW, cvsH, bdW, bdH, bdltX, bdltY;
+var socket;
+var playing = false, flip = false;
+var ballX, ballY, ballVX, ballVY;
+var padPos, padVel, pad2Pos, pad2Vel;
+
+function redraw() {
+ ctx.fillStyle = "#000000";
+ ctx.fillRect(0, 0, cvsW, cvsH);
+
+ redrawFast();
+}
+
+function calcBallX() {return bdltX + bdW * (flip ? 1 - ballX : ballX);}
+function calcBallY() {return bdltY + bdH * ballY;}
+function calcPadY() {return bdltY + bdH * ((flip ? pad2Pos : padPos) - padHeight / 2);}
+function calcPad2Y() {return bdltY + bdH * ((flip ? padPos : pad2Pos) - padHeight / 2);}
+
+function redrawFast() {
+ ctx.strokeStyle = "#ffffff";
+ ctx.lineWidth = 2;
+ ctx.strokeRect(bdltX - 1, bdltY - 1, bdW + 2, bdH + 2);
+
+ ctx.lineWidth = 1;
+ ctx.beginPath();
+ ctx.moveTo(bdltX + bdW / 2 | 0, bdltY);
+ ctx.lineTo(bdltX + bdW / 2 | 0, bdltY + bdH);
+ ctx.stroke();
+
+ if (playing) {
+ ctx.fillStyle = "#ffffff";
+ ctx.beginPath();
+ ctx.arc(calcBallX(), calcBallY(), ballRadius * bdW, 0, 2 * Math.PI);
+ ctx.rect(bdltX + bdW * padX, calcPadY(), bdW * padWidth, bdH * padHeight);
+ ctx.rect(bdltX + bdW * (1 - padX - padWidth), calcPad2Y(), bdW * padWidth, bdH * padHeight);
+ ctx.fill();
+ }
+}
+
+function undrawElements() {
+ ctx.fillStyle = "#000000";
+ ctx.beginPath();
+ ctx.rect(
+ calcBallX() - ballRadius * bdW - 2, calcBallY() - ballRadius * bdW - 2,
+ 2 * ballRadius * bdW + 4, 2 * ballRadius * bdW + 4);
+ ctx.rect(
+ bdltX + bdW * padX - 2, calcPadY() - 2,
+ bdW * padWidth + 4, bdH * padHeight + 4);
+ ctx.rect(
+ bdltX + bdW * (1 - padX - padWidth) - 2, calcPad2Y() - 2,
+ bdW * padWidth + 4, bdH * padHeight + 4);
+ ctx.fill();
+}
+
+function resizeHandler() {
+ var rect = cvs.getBoundingClientRect();
+ cvsW = cvs.width = rect.width;
+ cvsH = cvs.height = rect.height;
+ // I believe this stuff is correct.
+ if (cvsH * boardRatio > cvsW) {
+ bdW = cvsW;
+ bdH = bdW / boardRatio | 0;
+ bdltX = 2;
+ bdltY = (cvsH - bdH) / 2 + 2 | 0;
+ bdW -= 4; bdH -= 4;
+ } else {
+ bdH = cvsH;
+ bdW = boardRatio * bdH | 0;
+ bdltX = (cvsW - bdW) / 2 + 2 | 0;
+ bdltY = 2;
+ bdW -= 4; bdH -= 4;
+ }
+
+ redraw();
+}
+
+function displayStatus(msg) {
+ document.getElementById("status").innerHTML = msg;
+}
+
+function openGame() {
+ socket = io();
+ socket.on("redirect", function(url) {
+ location.href = url;
+ });
+
+ socket.on("status", function(msg) {
+ displayStatus(msg);
+ });
+
+ socket.on("serve", function(side, x, y) {
+ playing = true;
+ flip = side == "right";
+ ballX = x; ballY = y;
+ padPos = pad2Pos = 0.5;
+ redraw();
+ });
+
+ socket.on("stop", function() {
+ playing = false;
+ stopPhysicsLoop();
+ stopGraphicsLoop();
+ redraw();
+ });
+
+ socket.on("startBall", function() {
+ initPhysics();
+ ballVX = -0.5 / boardRatio;
+ ballVY = -0.5;
+ startPhysicsLoop();
+ startGraphicsLoop();
+ });
+
+ socket.on("start", function() {
+ initPhysics();
+ ballVX = 0.5 / boardRatio;
+ ballVY = -0.5;
+ startPhysicsLoop();
+ startGraphicsLoop();
+ });
+
+ socket.on("padvec", function(pos, vel) {
+ pad2Pos = pos;
+ pad2Vel = vel;
+ });
+
+ socket.emit("open", gameId);
+}
+
+var graphicsLoopId = null, physicsLoopId = null;
+
+function startGraphicsLoop() {
+ // undrawElements();
+ redraw(); // TODO: redrawFast
+ graphicsLoopId = requestAnimationFrame(startGraphicsLoop);
+}
+
+function stopGraphicsLoop() {
+ if (graphicsLoopId == null) return;
+ cancelAnimationFrame(graphicsLoopId);
+ graphicsLoopId = null;
+}
+
+function startPhysicsLoop() {
+ var interval = 1 / 120;
+ physicsLoopId = setInterval(function() {
+ advancePhysics(interval);
+ }, interval * 1000);
+}
+
+function stopPhysicsLoop() {
+ if (physicsLoopId == null) return;
+ clearInterval(physicsLoopId);
+ physicsLoopId = null;
+}
+
+function initPhysics() {
+ ballX = ballY = 0.5;
+ ballVX = ballVY = 0;
+ padPos = pad2Pos = 0.5;
+ padVel = pad2Vel = 0;
+}
+
+function advancePhysics(deltaT) {
+ var newballX = ballX + ballVX * deltaT;
+ var newballY = ballY + ballVY * deltaT;
+ var newpadPos = padPos + padVel * deltaT;
+ var newpad2Pos = pad2Pos + pad2Vel * deltaT;
+
+ var t;
+ if (newballY <= ballRadius) {
+ t = (ballRadius - ballY) / ballVY;
+ } else if (newballY >= 1 - ballRadius) {
+ t = (1 - ballRadius - ballY) / ballVY;
+ } else {
+ t = -1;
+ }
+ if (t >= 0) {
+ newballY = ballY + ballVY * (2 * t - deltaT);
+ ballVY = -ballVY;
+ }
+
+ if (newballX <= padX + padWidth + ballRadius &&
+ Math.abs(newballY - padPos) < padHeight / 2 + ballRadius) {
+ t = (padX + padWidth + ballRadius - ballX) / ballVX;
+ } else if (newballX >= 1 - (padX + padWidth + ballRadius) &&
+ Math.abs(newballY - pad2Pos) < padHeight / 2 + ballRadius) {
+ t = (1 - (padX + padWidth + ballRadius) - ballX) / ballVX;
+ } else {
+ t = -1;
+ }
+ if (t >= 0) {
+ newballX = ballX + ballVX * (2 * t - deltaT);
+ ballVX = -ballVX;
+ }
+
+ ballX = newballX;
+ ballY = newballY;
+ padPos = newpadPos;
+ pad2Pos = newpad2Pos;
+}
+
+function setupBindings() {
+ window.addEventListener("keydown", function(ev) {
+ if (ev.key == "w" || ev.key == "ArrowUp") {
+ padVel = -padBaseSpeed;
+ socket.emit("padvec", padPos, padVel);
+ } else if (ev.key == "s" || ev.key == "ArrowDown") {
+ padVel = padBaseSpeed;
+ socket.emit("padvec", padPos, padVel);
+ }
+ });
+
+ window.addEventListener("keyup", function(ev) {
+ if (ev.key == "w" || ev.key == "ArrowUp" ||
+ ev.key == "s" || ev.key == "ArrowDown") {
+ padVel = 0;
+ socket.emit("padvec", padPos, padVel);
+ }
+ });
+}
+
+window.addEventListener("load", function() {
+ gameId = document.location.href.replace(/.*\//, "");
+
+ cvs = document.getElementById("cvs");
+ ctx = cvs.getContext("2d");
+
+ resizeHandler();
+
+ setupBindings();
+
+ openGame();
+});
+
+window.addEventListener("resize", resizeHandler);
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..7c7e891
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,647 @@
+{
+ "name": "pongmp",
+ "version": "0.1.0",
+ "lockfileVersion": 1,
+ "requires": true,
+ "dependencies": {
+ "accepts": {
+ "version": "1.3.5",
+ "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
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+ "requires": {
+ "mime-types": "~2.1.18",
+ "negotiator": "0.6.1"
+ }
+ },
+ "after": {
+ "version": "0.8.2",
+ "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
+ "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8="
+ },
+ "array-flatten": {
+ "version": "1.1.1",
+ "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+ "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+ },
+ "arraybuffer.slice": {
+ "version": "0.0.7",
+ "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz",
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+ },
+ "async-limiter": {
+ "version": "1.0.0",
+ "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
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+ },
+ "backo2": {
+ "version": "1.0.2",
+ "resolved": "https://registry.npmjs.org/backo2/-/backo2-1.0.2.tgz",
+ "integrity": "sha1-MasayLEpNjRj41s+u2n038+6eUc="
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+ "version": "1.0.2",
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+ },
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+ "integrity": "sha1-F+bBH3PdTz10zaek/zI46a2b+JA="
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+ "async-limiter": "~1.0.0",
+ "safe-buffer": "~5.1.0",
+ "ultron": "~1.1.0"
+ }
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+ "xmlhttprequest-ssl": {
+ "version": "1.5.5",
+ "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz",
+ "integrity": "sha1-wodrBhaKrcQOV9l+gRkayPQ5iz4="
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+ "yeast": {
+ "version": "0.1.2",
+ "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz",
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+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..c66f22a
--- /dev/null
+++ b/package.json
@@ -0,0 +1,15 @@
+{
+ "name": "pongmp",
+ "version": "0.1.0",
+ "description": "",
+ "main": "server.js",
+ "scripts": {
+ "test": "echo \"Error: no test specified\" && exit 1"
+ },
+ "author": "Tom Smeding <tom.smeding@gmail.com> (https://tomsmeding.com)",
+ "license": "MIT",
+ "dependencies": {
+ "express": "^4.16.3",
+ "socket.io": "^2.1.1"
+ }
+}
diff --git a/server.js b/server.js
new file mode 100755
index 0000000..81df97c
--- /dev/null
+++ b/server.js
@@ -0,0 +1,134 @@
+#!/usr/bin/env node
+const http = require("http");
+const express = require("express");
+const socketio = require("socket.io")
+
+const PORT = 8080;
+
+const app = express();
+const server = http.Server(app);
+const io = socketio(server);
+
+// gameid -> {pl: [socket], started: Bool}
+const games = new Map();
+
+function genId() {
+ for (let i = 0; i < 10; i++) {
+ // 2176782336 == 36^6
+ const id = ("000000" + (2176782336 * Math.random() | 0).toString(36)).slice(-6);
+ if (!games.has(id)) return id;
+ }
+ return "";
+}
+
+function validId(id) {
+ return /^[0-9a-z]{6}$/.test(id);
+}
+
+app.get("/", (req, res) => {
+ const gameid = genId();
+ if (gameid == "") {
+ res.sendStatus(500);
+ return;
+ }
+ res.redirect("/game/" + gameid);
+});
+
+app.param("gameid", (req, res, next, gameid) => {
+ if (!validId(gameid)) {
+ res.sendStatus(404);
+ } else {
+ next();
+ }
+});
+
+app.get("/game/:gameid", (req, res) => {
+ res.sendFile(__dirname + "/game.html");
+});
+
+app.get("/game.css", (req, res) => res.sendFile(__dirname + "/game.css"));
+app.get("/game.js", (req, res) => res.sendFile(__dirname + "/game.js"));
+
+io.on("connection", (conn) => {
+ let gameid, gameobj;
+ conn.on("open", (id) => {
+ console.log("open " + id);
+ if (!validId(id)) {
+ console.log(" invalid");
+ conn.emit("redirect", "/");
+ conn.disconnect(true);
+ return;
+ }
+ gameobj = games.get(id);
+ if (gameobj != undefined) {
+ if (gameobj.pl.length == 1 && !gameobj.started) {
+ console.log(" serve");
+ gameid = id;
+ gameobj.pl.push(conn);
+ gameobj.pl[0].emit("status", "Get ready...");
+ gameobj.pl[1].emit("status", "Get ready...");
+ gameobj.pl[0].emit("serve", "left", 0.5, 0.5);
+ gameobj.pl[1].emit("serve", "right", 0.5, 0.5);
+ gameobj.started = true;
+ setTimeout(() => {
+ if (!gameobj || gameobj.pl.length != 2) return;
+ gameobj.pl[0].emit("status", "");
+ gameobj.pl[1].emit("status", "");
+ gameobj.pl[0].emit("startBall");
+ gameobj.pl[1].emit("start");
+ }, 2000);
+ } else {
+ console.log(" full");
+ gameobj = undefined;
+ conn.emit("status", "Game full! Opening new game...");
+ setTimeout(() => {
+ conn.emit("redirect", "/");
+ conn.disconnect(true);
+ }, 2000);
+ }
+ } else {
+ console.log(" new");
+ gameid = id;
+ gameobj = {pl: [conn], started: false};
+ games.set(gameid, gameobj);
+ conn.emit("status", "Waiting for other player...");
+ }
+ });
+
+ conn.on("disconnect", () => {
+ if (gameobj == undefined) return;
+
+ console.log("stop " + gameid);
+
+ const newpl = [];
+ for (const p of gameobj.pl) {
+ if (p != conn) {
+ p.emit("stop");
+ p.emit("status", "Other player left.");
+ setTimeout(() => {
+ p.emit("redirect", "/");
+ p.disconnect(true);
+ }, 2000);
+ newpl.push(p);
+ }
+ }
+
+ if (newpl.length == 0) {
+ console.log(" delete");
+ games.delete(gameid);
+ } else {
+ gameobj.pl = newpl;
+ }
+ });
+
+ conn.on("padvec", (pos, vel) => {
+ if (!gameobj) return;
+ for (const p of gameobj.pl) {
+ if (p != conn) {
+ p.emit("padvec", pos, vel);
+ }
+ }
+ });
+});
+
+server.listen(PORT, () => console.log("Listening on port " + PORT));
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-21 16:59:06 +0100