move index.jjs
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index.js
156
index.js
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const WebSocket = require('ws');
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const express = require('express');
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const http = express();
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const path = require('path');
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const pug = require('pug');
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const Jimp = require('jimp');
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const fs = require('fs');
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http.use(express.static(path.join(__dirname, 'html')));
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http.set('view engine', 'pug');
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const config = require("./settings.json");
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const httpPort = config.httpPort;
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const appPort = config.appPort;
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const serverAddress = config.serverAddress;
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const saveFile = config.saveFile;
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const boardWidth = config.boardWidth;
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const boardHeight = config.boardHeight;
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var toQuit = false;
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var board = new Array(boardWidth * boardHeight * 4);
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if (!fs.existsSync(saveFile)) {
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console.log("No save file found, creating blank board.");
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board.fill(255);
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} else {
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console.log("Save file found, loading")
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let image = Jimp.read(`./${saveFile}`, (err, image) => {
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for (let x = 0; x < boardWidth; x ++) {
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for (let y = 0; y < boardHeight; y ++) {
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pixelNumber = evaulatePixelNumber(x * 4, y * 4);
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let pixel = Jimp.intToRGBA(image.getPixelColor(x, y))
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board[pixelNumber + 0] = pixel.r
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board[pixelNumber + 1] = pixel.g
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board[pixelNumber + 2] = pixel.b
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board[pixelNumber + 3] = 255;
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}
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}
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console.log("Loaded")
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});
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}
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const server = new WebSocket.Server({
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port: appPort
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});
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let clients = [];
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const evaulatePixelNumber = (x, y) => {
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let pixelNumber;
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if (y > 0)
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pixelNumber = (y) * boardWidth + x;
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if (y == 0)
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pixelNumber = x;
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return pixelNumber;
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}
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server.on('connection', function(client) {
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clients.push(client);
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// When you receive a message, send that message to every socket.
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client.on('message', function(msg) {
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let packet, content, code;
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try {
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packet = JSON.parse(msg.toString());
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content = packet.content;
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code = packet.code;
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} catch (e) {console.log(e)}
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let response = {};
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switch(code) {
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case 0:
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response.code = 0;
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response.content = board;
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client.send(Buffer.from(JSON.stringify(response)));
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break;
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case 1:
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response.code = 1;
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response.content = content;
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console.log(`response content ${response.content}`);
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contentJson = JSON.parse(content);
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let pixelNumber = evaulatePixelNumber(contentJson.x * 4, contentJson.y * 4);
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if (contentJson.x < 0 || contentJson.y < 0) {
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break;
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}
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board[pixelNumber + 0] = contentJson.r;
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board[pixelNumber + 1] = contentJson.g;
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board[pixelNumber + 2] = contentJson.b;
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board[pixelNumber + 3] = 255;
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clients.forEach(c => c.send(Buffer.from(JSON.stringify(response))));
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break;
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default:
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console.log("Packet cannot be understood: ", packet);
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client.send("{\"code\":-1}");
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}
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});
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client.on('close', function() {
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clients = clients.filter(s => s !== client);
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});
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});
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http.get('/', (req, res) => {
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res.render('index.pug', {root: __dirname, server: serverAddress, port:appPort});
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})
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http.listen(httpPort, "0.0.0.0", () => {
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console.log(`Starting pixelbattle http server on port ${httpPort}`);
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})
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const save = (err, image) => {
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if (err) throw err;
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console.log()
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for (let x = 0; x < boardWidth; x ++) {
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for (let y = 0; y < boardHeight; y ++) {
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let pixelNumber = evaulatePixelNumber(x * 4 , y * 4);
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image.setPixelColor(
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Jimp.rgbaToInt(
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Number(board[pixelNumber + 0]),
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Number(board[pixelNumber + 1]),
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Number(board[pixelNumber + 2]),
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Number(board[pixelNumber + 3])
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),
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x, y
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);
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}
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}
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image.write(`./${saveFile}`, (err) => {
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if (err) throw err;
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console.log("Saved")
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if (toQuit) process.exit();
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});
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}
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process.stdin.resume();
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process.on('SIGUSR1', () => {
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//save
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console.log(`Caught SIGUSR1, saving ${boardWidth}x${boardHeight} image`)
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toQuit = false;
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let image = new Jimp(boardWidth, boardHeight, save);
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});
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process.on('SIGINT', () => {
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//save
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console.log(`Caught SIGINT, saving ${boardWidth}x${boardHeight} image and quitting`)
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toQuit = true;
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let image = new Jimp(boardWidth, boardHeight, save);
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});
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