302 lines
11 KiB
TypeScript
302 lines
11 KiB
TypeScript
import { Config } from "../config";
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import { Console } from "hsconsole";
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import { createReader, IReader, Endian } from "bufferstuff";
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import { FunkyArray } from "../funkyArray";
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import { Server, Socket } from "net";
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import { MPClient } from "./MPClient";
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import { Packet } from "./enums/Packet";
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import { PacketKeepAlive } from "./packets/KeepAlive";
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import { PacketHandshake } from "./packets/Handshake";
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import { PacketLoginRequest } from "./packets/LoginRequest";
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import { PacketChat } from "./packets/Chat";
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import { PacketSpawnPosition } from "./packets/SpawnPosition";
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import { PacketPlayerPositionLook } from "./packets/PlayerPositionLook";
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import { PacketNamedEntitySpawn } from "./packets/NamedEntitySpawn";
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import { PacketDisconnectKick } from "./packets/DisconnectKick";
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import { Player } from "./entities/Player";
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import { SaveCompressionType } from "./enums/SaveCompressionType";
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import { WorldSaveManager } from "./WorldSaveManager";
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import { World } from "./World";
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import { Chunk } from "./Chunk";
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import { PacketTimeUpdate } from "./packets/TimeUpdate";
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import { HillyGenerator } from "./generators/Hilly";
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import { NetherGenerator } from "./generators/Nether";
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import { PacketWindowItems } from "./packets/WindowItems";
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import { getRandomValues } from "crypto";
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const chunkFrom = -15;
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const chunkTo = 15;
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const chunkCount = Math.abs(chunkFrom * 2) * (chunkTo * 2);
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function getRandomSeed() {
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const arr = new Uint32Array(1);
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return getRandomValues(arr)[0];
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}
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export class MinecraftServer {
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private static readonly PROTOCOL_VERSION = 14;
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private static readonly TICK_RATE = 20;
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private static readonly TICK_RATE_MS = 1000 / MinecraftServer.TICK_RATE;
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private readonly keepalivePacket = new PacketKeepAlive().writeData();
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private config:Config;
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private server:Server;
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private readonly serverClock:NodeJS.Timeout;
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private tickCounter:number = 0;
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private clients:FunkyArray<string, MPClient>;
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public worlds:FunkyArray<number, World>;
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public saveManager:WorldSaveManager;
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// https://stackoverflow.com/a/7616484
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// Good enough for the world seed.
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private hashCode(string:string) : number {
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let hash = 0, i, chr;
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if (string.length === 0) {
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return hash;
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}
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for (i = 0; i < string.length; i++) {
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chr = string.charCodeAt(i);
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hash = ((hash << 5) - hash) + chr;
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hash |= 0;
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}
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return hash;
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}
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public constructor(config:Config) {
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this.config = config;
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let shuttingDown = false;
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process.on("SIGINT", async (signal) => {
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if (shuttingDown) {
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return;
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}
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shuttingDown = true;
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Console.printInfo("Shutting down...");
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// Stop the server timer
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clearInterval(this.serverClock);
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// Disconnect all players
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const kickPacket = new PacketDisconnectKick("Server shutting down.").writeData();
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this.sendToAllClients(kickPacket);
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// Shut down the tcp server
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this.server.close();
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// Save chunks
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Console.printInfo("Saving worlds...");
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// There's a race condition here. oops.
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let savedWorldCount = 0;
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let savedChunkCount = 0;
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await this.worlds.forEach(async (world) => {
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if (world.chunks.length !== 0) {
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await world.chunks.forEach(async (chunk) => {
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await world.unloadChunk(Chunk.CreateCoordPair(chunk.x, chunk.z));
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savedChunkCount++;
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});
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}
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savedWorldCount++;
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});
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Console.printInfo(`Saved ${savedChunkCount} chunks from ${savedWorldCount} world(s).`);
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// Flush final console log to disk and close all writers
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Console.cleanup();
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// hsconsole is gone now so we have to use built in.
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console.log("Goodbye");
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});
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if (this.config.saveCompression === SaveCompressionType.NONE) {
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Console.printWarn("=============- WARNING -=============");
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Console.printWarn(" Chunk compression is disabled. This");
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Console.printWarn(" will lead to large file sizes!");
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Console.printWarn("=====================================");
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}
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this.clients = new FunkyArray<string, MPClient>();
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// Convert seed if needed
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let worldSeed = typeof(this.config.seed) === "string" ? this.hashCode(this.config.seed) : typeof(this.config.seed) === "number" ? this.config.seed : getRandomSeed();
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// Init save manager and load seed from it if possible
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this.saveManager = new WorldSaveManager(this.config, [0, -1], worldSeed);
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if (this.saveManager.worldSeed !== Number.MIN_VALUE) {
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worldSeed = this.saveManager.worldSeed;
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}
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this.worlds = new FunkyArray<number, World>();
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this.worlds.set(0, new World(this.saveManager, 0, worldSeed, new HillyGenerator(worldSeed)));
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this.worlds.set(-1, new World(this.saveManager, -1, worldSeed, new NetherGenerator(worldSeed)));
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// Generate spawn area (overworld)
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/*(async () => {
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const generateStartTime = Date.now();
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Console.printInfo("Generating spawn area...");
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for (let x = -3; x < 3; x++) {
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for (let z = -3; z < 3; z++) {
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await this.overworld.getChunkSafe(x, z);
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}
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}
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Console.printInfo(`Done! Took ${Date.now() - generateStartTime}ms`);
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}).bind(this)();*/
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(async () => {
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const generateStartTime = Date.now();
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let timer = Date.now();
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await this.worlds.forEach(async world => {
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timer = Date.now();
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let chunksGenerated = 0;
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let chunksPerSecond = 0;
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Console.printInfo(`Generating spawn area for DIM${world.dimension}...`);
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for (let x = chunkFrom; x < chunkTo; x++) {
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for (let z = chunkFrom; z < chunkTo; z++) {
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const chunk = await world.getChunkSafe(x, z);
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chunk.forceLoaded = true;
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chunksGenerated++;
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chunksPerSecond++;
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if (Date.now() - timer >= 1000) {
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Console.printInfo(`DIM${world.dimension} Progress [${chunksGenerated}/${chunkCount}] (${chunksPerSecond} chunks/s) ${((chunksGenerated / chunkCount) * 100).toFixed(2)}%`);
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timer = Date.now();
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chunksPerSecond = 0;
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}
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}
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}
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});
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Console.printInfo(`Done! Took ${Date.now() - generateStartTime}ms`);
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this.initServer();
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}).bind(this)();
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const timeUpdate = new PacketTimeUpdate(BigInt(this.tickCounter));
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this.serverClock = setInterval(() => {
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// Every 1 sec
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if (this.tickCounter % MinecraftServer.TICK_RATE === 0) {
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if (this.clients.length !== 0) {
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timeUpdate.time = BigInt(this.tickCounter);
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const timePacket = timeUpdate.writeData();
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this.clients.forEach(client => {
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// Keep the client happy
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client.send(this.keepalivePacket);
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client.send(timePacket);
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});
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}
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// const memoryUsage = process.memoryUsage();
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// console.log(`Memory Usage: ${(memoryUsage.heapUsed / 1024 / 1024).toFixed(1)}MB / ${(memoryUsage.heapTotal / 1024 / 1024).toFixed(1)}MB ArrayBuffers: ${(memoryUsage.arrayBuffers / 1024 / 1024).toFixed(1)}MB`);
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}
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this.worlds.forEach(world => {
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world.tick();
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});
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this.tickCounter++;
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}, MinecraftServer.TICK_RATE_MS);
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this.server = new Server();
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this.server.on("connection", this.onConnection.bind(this));
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}
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initServer() {
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this.server.listen(this.config.port, () => Console.printInfo(`Minecraft server started at ${this.config.port}`));
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}
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sendToAllClients(buffer:Buffer) {
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this.clients.forEach(client => {
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client.send(buffer);
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});
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}
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sendChatMessage(text:string) {
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this.sendToAllClients(new PacketChat(text).writeData());
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Console.printInfo(`[CHAT] ${text}`);
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}
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async handleLoginRequest(reader:IReader, socket:Socket, setMPClient:(mpclient:MPClient) => void) {
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const loginPacket = new PacketLoginRequest().readData(reader);
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if (loginPacket.protocolVersion !== MinecraftServer.PROTOCOL_VERSION) {
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if (loginPacket.protocolVersion > MinecraftServer.PROTOCOL_VERSION) {
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socket.write(new PacketDisconnectKick("Outdated server!").writeData());
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} else {
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socket.write(new PacketDisconnectKick("Outdated or modded client!").writeData());
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}
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return;
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}
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const dimension = 0;
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const world = this.worlds.get(dimension);
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if (world instanceof World) {
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const clientEntity = new Player(this, world, loginPacket.username);
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if (this.saveManager.playerDataOnDisk.includes(clientEntity.username)) {
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clientEntity.fromSave(await this.saveManager.readPlayerDataFromDisk(clientEntity.username));
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} else {
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clientEntity.position.set(8, 70, 8);
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}
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world.addEntity(clientEntity);
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const client = new MPClient(this, socket, clientEntity);
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setMPClient(client);
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clientEntity.mpClient = client;
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this.clients.set(loginPacket.username, client);
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this.sendChatMessage(`\u00a7e${loginPacket.username} joined the game`);
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socket.write(new PacketLoginRequest(clientEntity.entityId, "", 0, dimension).writeData());
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socket.write(new PacketSpawnPosition(8, 64, 8).writeData());
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const thisPlayerSpawn = new PacketNamedEntitySpawn(clientEntity.entityId, clientEntity.username, clientEntity.absPosition.x, clientEntity.absPosition.y, clientEntity.absPosition.z, clientEntity.absRotation.yaw, clientEntity.absRotation.pitch, clientEntity.mpClient?.getHeldItemStack()?.itemID).writeData();
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world.players.forEach(player => {
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if (player.entityId !== clientEntity.entityId && clientEntity.distanceTo(player) < World.ENTITY_MAX_SEND_DISTANCE) {
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// Inform the joining player of the players around them
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socket.write(new PacketNamedEntitySpawn(player.entityId, player.username, player.absPosition.x, player.absPosition.y, player.absPosition.z, player.absRotation.yaw, player.absRotation.pitch, player.mpClient?.getHeldItemStack()?.itemID).writeData());
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player.sendPlayerEquipment(clientEntity);
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// Inform players around the joining player of the joined player
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player.mpClient?.send(thisPlayerSpawn);
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clientEntity.sendPlayerEquipment(player);
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}
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});
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socket.write(new PacketPlayerPositionLook(clientEntity.position.x, clientEntity.position.y, clientEntity.position.y + 0.62, clientEntity.position.z, 0, 0, false).writeData());
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const playerInventory = clientEntity.inventory;
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socket.write(new PacketWindowItems(0, playerInventory.getInventorySize(), playerInventory.constructInventoryPayload()).writeData());
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} else {
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socket.write(new PacketDisconnectKick("Failed to find world to put player in.").writeData());
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}
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}
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handleHandshake(reader:IReader, socket:Socket) {
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const handshakePacket = new PacketHandshake().readData(reader);
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socket.write(handshakePacket.writeData());
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}
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onConnection(socket:Socket) {
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let mpClient:MPClient;
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const setMPClient = (mpclient:MPClient) => {
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mpClient = mpclient;
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}
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const playerDisconnect = (err:Error) => {
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mpClient.entity.world.removeEntity(mpClient.entity);
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this.clients.remove(mpClient.entity.username);
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this.sendChatMessage(`\u00a7e${mpClient.entity.username} left the game`);
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if (typeof(err) !== "boolean") {
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Console.printError(`Client disconnected with error: ${err.message}`);
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}
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}
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socket.on("close", playerDisconnect.bind(this));
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socket.on("error", playerDisconnect.bind(this));
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socket.on("data", chunk => {
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const reader = createReader(Endian.BE, chunk);
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// Let mpClient take over if it exists
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if (mpClient instanceof MPClient) {
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mpClient.handlePacket(reader);
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return;
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}
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const packetId = reader.readUByte();
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switch (packetId) {
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// TODO: Handle timeouts at some point, idk.
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case Packet.KeepAlive: break;
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case Packet.LoginRequest: this.handleLoginRequest(reader, socket, setMPClient.bind(this)); break;
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case Packet.Handshake: this.handleHandshake(reader, socket); break;
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}
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});
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}
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} |