play.benjamin-kraft.eu/server/ts/games/global_draw.ts

import {ServerGame} from "./game_standard"
import {Room} from "../room"
import {Client} from "../client"
import {log} from "../logger";

import fs = require("fs");

export class GlobalDraw extends ServerGame {

	lines: any[];
	pixels: any[][];

	linesPath = "json_data/global_draw/lines.json";
	pixelsPath = "json_data/global_draw/pixels.json";

	pixelCount = 1000;

	constructor(lobby: Room, settings: Settings.Global) {
		super(lobby, settings);

		this.lines = [];
		this.pixels = [];

		for (let x = 0; x < this.pixelCount; x++) {
			let column = [];
			for (let y = 0; y < this.pixelCount; y++) {
				column.push({x: x, y: y, c: "#ffffff"});
			}
			this.pixels.push(column);
		}

		let linesLoaded = false;
		let pixelsLoaded = false;

		this.loadDrawingsFromFile(this.linesPath, (data: any[]) => {
			this.lines = data;
		}, () => {
			linesLoaded = true;
			if (pixelsLoaded) {
				this.startSaveInterval();
			}
		});
		this.loadDrawingsFromFile(this.pixelsPath, (data: any[]) => {
			for (let x = 0; x < this.pixelCount; x++) {
				for (let y = 0; y < this.pixelCount; y++) {
					if (data[x])
						if (data[x][y])
							this.pixels[x][y].c = data[x][y].c
				}
			}
		}, () => {
			pixelsLoaded = true;
			if (linesLoaded) {
				this.startSaveInterval();
			}
		});
	}

	startSaveInterval() {
		this.saveAllDrawingsToFile();

		//Saves once every day
		setInterval(() => this.saveAllDrawingsToFile(), 1000 * 60 * 60 * 24);
	}

	addLine(line: any) {
		this.lines.push(line);
		this.room.toAll('add-line', line)
	}

	fillPixel(pixel: any) {
		this.pixels[pixel.x][pixel.y].c = pixel.c;
		this.room.toAll('fill-pixel', pixel)
	}

	loadDrawingsFromFile(drawingsPath: string, successs: (data: any[]) => void, done: () => void) {
		fs.readFile(drawingsPath, 'utf8', (err, data) => {
			if (err)
				log('load-error', null, this.room, err.message);
			else {
				try {
					let parsed = JSON.parse(data);
					log('load-success', null, this.room);
					successs(parsed);
				} catch (e) {
					log('parse-error', null, this.room, e.message);
				}
			}
			done();
		});
	}

	saveDrawingsToFile(drawings: any[], drawingsPath: string, callback: (err: any) => void) {
		let splits = drawingsPath.split('/');
		let path = splits.slice(0, splits.length - 1).reduce((prev, curr) => prev + '/' + curr);
		let name = splits[splits.length - 1];
		if (!fs.existsSync(path)) {
			fs.mkdirSync(path, {recursive: true});
		}
		fs.writeFile(drawingsPath, JSON.stringify(drawings), callback);
	}

	saveAllDrawingsToFile() {
		let linesSaved = false;
		let pixelsSaved = false;

		this.saveDrawingsToFile(this.lines, this.linesPath, (err) => {
			if (err)
				log('save-error', null, this.room, err.message);
			else {
				linesSaved = true;
				if (pixelsSaved) {
					this.room.toAll('all-saved');
					linesSaved = false;
					pixelsSaved = false
				}
				log('save-success', null, this.room, 'Successfully saved lines to file')
			}
		});
		this.saveDrawingsToFile(this.pixels, this.pixelsPath, (err) => {
			if (err)
				log('save-error', null, this.room, err.message);
			else {
				pixelsSaved = true;
				if (linesSaved) {
					this.room.toAll('all-saved');
					pixelsSaved = false;
					linesSaved = false
				}
				log('save-success', null, this.room, 'Successfully saved pixels to file')
			}
		});
	}

	addClient(client: Client): void {
		this.setEvents(client);
	}

	setEvents(client: Client): void {
		super.setEvents(client);
		let socket = client.socket;
		socket.on('add-line', (line) => this.addLine(line));
		socket.on('fill-pixel', (pixel) => this.fillPixel(pixel));
		socket.on('request-all-lines', () => socket.emit('add-all', this.lines));
		socket.on('request-all-pixels', () => socket.emit('fill-all', this.pixels));
		socket.on('save-all', () => this.saveAllDrawingsToFile());
	}

}