Update WorldSaveManager to support multiple dimensions and add the nether

server/MinecraftServer.ts

@@ -19,6 +19,8 @@ import { WorldSaveManager } from "./WorldSaveManager";
 import { World } from "./World";
 import { Chunk } from "./Chunk";
 import { PacketTimeUpdate } from "./packets/TimeUpdate";
+import { HillyGenerator } from "./generators/Hilly";
+import { NetherGenerator } from "./generators/Nether";
 
 export class MinecraftServer {
 	private static readonly PROTOCOL_VERSION = 14;
@@ -34,6 +36,7 @@ export class MinecraftServer {
 	private worlds:FunkyArray<number, World>;
 	public saveManager:WorldSaveManager;
 	private overworld:World;
+	private nether:World;
 
 	// https://stackoverflow.com/a/7616484
 	// Good enough for the world seed.
@@ -103,13 +106,14 @@ export class MinecraftServer {
 		let worldSeed = typeof(this.config.seed) === "string" ? this.hashCode(this.config.seed) : this.config.seed;
 
 		// Init save manager and load seed from it if possible
-		this.saveManager = new WorldSaveManager(this.config, worldSeed);
+		this.saveManager = new WorldSaveManager(this.config, [0, -1], worldSeed);
 		if (this.saveManager.worldSeed !== Number.MIN_VALUE) {
 			worldSeed = this.saveManager.worldSeed;
 		}
 
 		this.worlds = new FunkyArray<number, World>();
-		this.worlds.set(0, this.overworld = new World(this.saveManager, worldSeed));
+		this.worlds.set(0, this.overworld = new World(this.saveManager, 0, worldSeed, new HillyGenerator(worldSeed)));
+		this.worlds.set(-1, this.nether = new World(this.saveManager, -1, worldSeed, new NetherGenerator(worldSeed)));
 
 		// Generate spawn area (overworld)
 		/*(async () => {
@@ -122,16 +126,37 @@ export class MinecraftServer {
 			}
 			Console.printInfo(`Done! Took ${Date.now() - generateStartTime}ms`);
 		}).bind(this)();*/
+		let chunksGenerated = 0;
 		(async () => {
 			const generateStartTime = Date.now();
-			Console.printInfo("Generating spawn area...");
+			let timer = Date.now();
-			for (let x = -5; x < 5; x++) {
+			Console.printInfo("Generating spawn area for DIM0...");
-				for (let z = -5; z < 5; z++) {
+			for (let x = -10; x < 10; x++) {
+				for (let z = -10; z < 10; z++) {
 					const chunk = await this.overworld.getChunkSafe(x, z);
 					chunk.forceLoaded = true;
+					chunksGenerated++;
+					if (Date.now() - timer >= 1000) {
+						Console.printInfo(`Progress [${chunksGenerated}/400] ${((chunksGenerated / 400) * 100).toFixed(2)}%`);
+						timer = Date.now();
+					}
+				}
+			}
+			chunksGenerated = 0;
+			Console.printInfo("Generating spawn area for DIM-1...");
+			for (let x = -10; x < 10; x++) {
+				for (let z = -10; z < 10; z++) {
+					const chunk = await this.nether.getChunkSafe(x, z);
+					chunk.forceLoaded = true;
+					chunksGenerated++;
+					if (Date.now() - timer >= 1000) {
+						Console.printInfo(`Progress [${chunksGenerated}/400] ${((chunksGenerated / 400) * 100).toFixed(2)}%`);
+						timer = Date.now();
+					}
 				}
 			}
 			Console.printInfo(`Done! Took ${Date.now() - generateStartTime}ms`);
+			this.initServer();
 		}).bind(this)();
 
 		this.serverClock = setInterval(() => {
@@ -155,7 +180,10 @@ export class MinecraftServer {
 
 		this.server = new Server();
 		this.server.on("connection", this.onConnection.bind(this));
-		this.server.listen(config.port, () => Console.printInfo(`Minecraft server started at ${config.port}`));
+	}
+
+	initServer() {
+		this.server.listen(this.config.port, () => Console.printInfo(`Minecraft server started at ${this.config.port}`));
 	}
 
 	sendToAllClients(buffer:Buffer) {
@@ -180,7 +208,8 @@ export class MinecraftServer {
 			return;
 		}
 		
-		const world = this.worlds.get(0);
+		const dimension = 0;
+		const world = this.worlds.get(dimension);
 		if (world instanceof World) {
 			const clientEntity = new Player(this, world, loginPacket.username);
 			world.addEntity(clientEntity);
@@ -192,7 +221,7 @@ export class MinecraftServer {
 
 			this.sendChatMessage(`\u00a7e${loginPacket.username} joined the game`);
 
-			socket.write(new PacketLoginRequest(clientEntity.entityId, "", 0, 0).writeData());
+			socket.write(new PacketLoginRequest(clientEntity.entityId, "", 0, dimension).writeData());
 			socket.write(new PacketSpawnPosition(8, 64, 8).writeData());
 
 			const thisPlayerSpawn = new PacketNamedEntitySpawn(clientEntity.entityId, clientEntity.username, clientEntity.absX, clientEntity.absY, clientEntity.absZ, clientEntity.absYaw, clientEntity.absPitch, 0).writeData();

server/World.ts

@@ -13,9 +13,10 @@ import { IQueuedUpdate } from "./queuedUpdateTypes/IQueuedUpdate";
 
 export class World {
 	public static ENTITY_MAX_SEND_DISTANCE = 50;
-	private static READ_CHUNKS_FROM_DISK = true;
+	private static READ_CHUNKS_FROM_DISK = false;
 
 	private readonly saveManager;
+	private readonly chunksOnDisk:Array<number>;
 
 	public chunks:FunkyArray<number, Chunk>;
 	public entites:FunkyArray<number, IEntity>;
@@ -25,15 +26,19 @@ export class World {
 	public queuedUpdates:Array<IQueuedUpdate>;
 	public generator:IGenerator;
 
-	public constructor(saveManager:WorldSaveManager, seed:number) {
+	public readonly dimension:number;
+
+	public constructor(saveManager:WorldSaveManager, dimension:number, seed:number, generator:IGenerator) {
+		this.dimension = dimension;
 		this.saveManager = saveManager;
+		this.chunksOnDisk = this.saveManager.chunksOnDisk.get(dimension) ?? new Array<number>;
 
 		this.chunks = new FunkyArray<number, Chunk>();
 		this.entites = new FunkyArray<number, IEntity>();
 		this.players = new FunkyArray<number, Player>();
 		this.queuedChunkBlocks = new Array<IQueuedUpdate>();
 		this.queuedUpdates = new Array<IQueuedUpdate>();
-		this.generator = new HillyGenerator(seed);
+		this.generator = generator;
 	}
 
 	public addEntity(entity:IEntity) {
@@ -86,7 +91,7 @@ export class World {
 			const coordPair = Chunk.CreateCoordPair(x, z);
 			const existingChunk = this.chunks.get(coordPair);
 			if (!(existingChunk instanceof Chunk)) {
-				if (World.READ_CHUNKS_FROM_DISK && this.saveManager.chunksOnDisk.includes(coordPair)) {
+				if (World.READ_CHUNKS_FROM_DISK && this.chunksOnDisk.includes(coordPair)) {
 					return this.saveManager.readChunkFromDisk(this, x, z)
 						.then(chunk => resolve(this.chunks.set(coordPair, chunk)));
 				} else {

server/WorldSaveManager.ts

@@ -1,14 +1,16 @@
-import { readFileSync, readFile, writeFile, existsSync, mkdirSync, writeFileSync, readdirSync } from "fs";
+import { readFileSync, readFile, writeFile, existsSync, mkdirSync, writeFileSync, readdirSync, renameSync } from "fs";
 import { createWriter, createReader, Endian } from "bufferstuff";
 import { Config } from "../config";
 import { Chunk } from "./Chunk";
 import { SaveCompressionType } from "./enums/SaveCompressionType";
 import { deflate, inflate } from "zlib";
 import { World } from "./World";
+import { FunkyArray } from "../funkyArray";
+import { Console } from "hsconsole";
 
 export class WorldSaveManager {
 	private readonly worldFolderPath;
-	private readonly worldChunksFolderPath;
+	private readonly oldWorldChunksFolderPath;
 	private readonly worldPlayerDataFolderPath;
 	private readonly infoFilePath;
 
@@ -18,13 +20,13 @@ export class WorldSaveManager {
 	public worldLastLoadDate = new Date();
 	public worldSeed = Number.MIN_VALUE;
 
-	public chunksOnDisk:Array<number>;
+	public chunksOnDisk:FunkyArray<number, Array<number>>;
 
-	public constructor(config:Config, numericalSeed:number) {
+	public constructor(config:Config, dimensions:Array<number>, numericalSeed:number) {
-		this.chunksOnDisk = new Array<number>();
+		this.chunksOnDisk = new FunkyArray<number, Array<number>>();
 
 		this.worldFolderPath = `./${config.worldName}`;
-		this.worldChunksFolderPath = `${this.worldFolderPath}/chunks`;
+		this.oldWorldChunksFolderPath = `${this.worldFolderPath}/chunks`;
 		this.worldPlayerDataFolderPath = `${this.worldFolderPath}/playerdata`;
 		this.infoFilePath = `${this.worldFolderPath}/info.hwd`;
 
@@ -43,14 +45,20 @@ export class WorldSaveManager {
 			this.createInfoFile(numericalSeed);
 		}
 
-		if (!existsSync(this.worldChunksFolderPath)) {
+		for (const dimension of dimensions) {
-			mkdirSync(this.worldChunksFolderPath);
+			const chunksArray = new Array<number>();
+			this.chunksOnDisk.set(dimension, chunksArray);
+
+			const chunkFolderPath = `${this.worldFolderPath}/DIM${dimension}`;
+			if (!existsSync(chunkFolderPath)) {
+				mkdirSync(chunkFolderPath);
 			} else {
-			const chunkFiles = readdirSync(this.worldChunksFolderPath);
+				const chunkFiles = readdirSync(chunkFolderPath);
 				for (const file of chunkFiles) {
 					if (file.endsWith(".hwc")) {
 						const name = file.split(".")[0];
-					this.chunksOnDisk.push(parseInt(name.startsWith("-") ? name.replace("-", "-0x") : `0x${name}`));
+						chunksArray.push(parseInt(name.startsWith("-") ? name.replace("-", "-0x") : `0x${name}`));
+					}
 				}
 			}
 		}
@@ -63,7 +71,7 @@ export class WorldSaveManager {
 	private createInfoFile(numericalSeed:number) {
 		const infoFileWriter = createWriter(Endian.BE, 26);
 		infoFileWriter.writeUByte(0xFD); // Info File Magic
-		infoFileWriter.writeUByte(0); // File Version
+		infoFileWriter.writeUByte(1); // File Version
 		infoFileWriter.writeLong(this.worldCreationDate.getTime()); // World creation date
 		infoFileWriter.writeLong(this.worldLastLoadDate.getTime()); // Last load date
 		infoFileWriter.writeLong(numericalSeed);
@@ -78,10 +86,17 @@ export class WorldSaveManager {
 		}
 
 		const fileVersion = infoFileReader.readByte();
-		if (fileVersion === 0) {
+		if (fileVersion === 0 || fileVersion === 1) {
 			this.worldCreationDate = new Date(Number(infoFileReader.readLong()));
 			infoFileReader.readLong(); // Last load time is currently ignored
 			this.worldSeed = Number(infoFileReader.readLong());
+
+			// Upgrade v0 to v1
+			if (fileVersion === 0) {
+				Console.printInfo("Upgrading world to format v1 from v0");
+				renameSync(`${this.worldFolderPath}/chunks`, `${this.worldFolderPath}/DIM0`);
+				this.createInfoFile(this.worldSeed);
+			}
 		}
 	}
 
@@ -103,14 +118,16 @@ export class WorldSaveManager {
 				.writeBuffer(chunk.getBlockLightBuffer())
 				.writeBuffer(chunk.getSkyLightBuffer()).toBuffer();
 
+			const codArr = this.chunksOnDisk.get(chunk.world.dimension);
 			if (saveType === SaveCompressionType.NONE) {
 				chunkFileWriter.writeInt(chunkData.length); // Data length
 				chunkFileWriter.writeBuffer(chunkData); // Chunk data
 
-				writeFile(`${this.worldChunksFolderPath}/${Chunk.CreateCoordPair(chunk.x, chunk.z).toString(16)}.hwc`, chunkFileWriter.toBuffer(), () => {
+				writeFile(`${this.worldFolderPath}/DIM${chunk.world.dimension}/${Chunk.CreateCoordPair(chunk.x, chunk.z).toString(16)}.hwc`, chunkFileWriter.toBuffer(), () => {
 					const cPair = Chunk.CreateCoordPair(chunk.x, chunk.z);
-					if (!this.chunksOnDisk.includes(cPair)) {
+					
-						this.chunksOnDisk.push(cPair);
+					if (!codArr?.includes(cPair)) {
+						codArr?.push(cPair);
 					}
 
 					resolve(true);
@@ -124,10 +141,10 @@ export class WorldSaveManager {
 					chunkFileWriter.writeInt(data.length);
 					chunkFileWriter.writeBuffer(data);
 
-					writeFile(`${this.worldChunksFolderPath}/${Chunk.CreateCoordPair(chunk.x, chunk.z).toString(16)}.hwc`, chunkFileWriter.toBuffer(), () => {
+					writeFile(`${this.worldFolderPath}/DIM${chunk.world.dimension}/${Chunk.CreateCoordPair(chunk.x, chunk.z).toString(16)}.hwc`, chunkFileWriter.toBuffer(), () => {
 						const cPair = Chunk.CreateCoordPair(chunk.x, chunk.z);
-						if (!this.chunksOnDisk.includes(cPair)) {
+						if (!codArr?.includes(cPair)) {
-							this.chunksOnDisk.push(cPair);
+							codArr?.push(cPair);
 						}
 						//console.log(`Wrote ${chunk.x},${chunk.z} to disk`);
 						resolve(true);
@@ -141,7 +158,7 @@ export class WorldSaveManager {
 
 	readChunkFromDisk(world:World, x:number, z:number) {
 		return new Promise<Chunk>((resolve, reject) => {
-			readFile(`${this.worldChunksFolderPath}/${Chunk.CreateCoordPair(x, z).toString(16)}.hwc`, (err, data) => {
+			readFile(`${this.worldFolderPath}/DIM${world.dimension}/${Chunk.CreateCoordPair(x, z).toString(16)}.hwc`, (err, data) => {
 				if (err) {
 					return reject(err);
 				}

server/blocks/Block.ts

@@ -90,4 +90,6 @@ export class Block {
 	static readonly flowerRose = new Block(38).setLightPassage(255).setBlockName("Rose");
 
 	static readonly clay = new Block(82).setBlockName("Clay");
+
+	static readonly netherrack = new Block(87).setBlockName("Netherrack");
 }

server/entities/Player.ts

@@ -47,8 +47,8 @@ export class Player extends EntityLiving {
 
 			// Load or keep any chunks we need
 			const currentLoads = [];
-			for (let x = bitX - 6; x < bitX + 6; x++) {
+			for (let x = bitX - 10; x < bitX + 10; x++) {
-				for (let z = bitZ - 6; z < bitZ + 6; z++) {
+				for (let z = bitZ - 10; z < bitZ + 10; z++) {
 					const coordPair = Chunk.CreateCoordPair(x, z);
 					if (!this.loadedChunks.includes(coordPair)) {
 						const chunk = await this.world.getChunkSafe(x, z);

server/generators/Hilly.ts

@@ -4,6 +4,7 @@ import { IGenerator } from "./IGenerator";
 import { Noise2D, makeNoise2D } from "../../external/OpenSimplex2D";
 import { Noise3D, makeNoise3D } from "../../external/OpenSimplex3D";
 import { QueuedBlockUpdate } from "../queuedUpdateTypes/BlockUpdate";
+import mulberry32 from "../mulberry32";
 
 export class HillyGenerator implements IGenerator {
 	private seed:number;
@@ -31,7 +32,7 @@ export class HillyGenerator implements IGenerator {
 
 	public constructor(seed:number) {
 		this.seed = seed;
-		this.seedGenerator = this.mulberry32(this.seed);
+		this.seedGenerator = mulberry32(this.seed);
 
 		this.generator = this.createGenerator2D();
 		this.generator1 = this.createGenerator2D();
@@ -67,21 +68,10 @@ export class HillyGenerator implements IGenerator {
 		return num >= 0.5 ? (num | 0) + 1 : num | 0;
 	}
 
-	// https://stackoverflow.com/a/47593316
-	// This is good enough (and fast enough) for what is needed here.
-	private mulberry32(a:number) {
-		return function() {
-			let t = a += 0x6D2B79F5;
-			t = Math.imul(t ^ t >>> 15, t | 1);
-			t ^= t + Math.imul(t ^ t >>> 7, t | 61);
-			return ((t ^ t >>> 14) >>> 0) / 4294967296;
-		}
-	}
-
 	public generate(chunk:Chunk) {
-		const treeRNG = this.mulberry32(this.seed + chunk.x + chunk.z);
+		const treeRNG = mulberry32(this.seed + chunk.x + chunk.z);
-		const grassRNG = this.mulberry32(this.seed + chunk.x + chunk.z);
+		const grassRNG = mulberry32(this.seed + chunk.x + chunk.z);
-		const flowerRNG = this.mulberry32(this.seed + chunk.x + chunk.z);
+		const flowerRNG = mulberry32(this.seed + chunk.x + chunk.z);
 
 		let colY = 0, colDirtMin = 0, colWaterY = 0, orgColY = 0;
 		for (let x = 0; x < 16; x++) {

server/generators/Nether.ts

@@ -0,0 +1,61 @@
+import { Block } from "../blocks/Block";
+import { Chunk } from "../Chunk";
+import { IGenerator } from "./IGenerator";
+import { Noise2D, makeNoise2D } from "../../external/OpenSimplex2D";
+import { Noise3D, makeNoise3D } from "../../external/OpenSimplex3D";
+import { QueuedBlockUpdate } from "../queuedUpdateTypes/BlockUpdate";
+import mulberry32 from "../mulberry32";
+
+export class NetherGenerator implements IGenerator {
+	private seed:number;
+	seedGenerator:() => number;
+
+	private generator:Noise3D;
+	private generator1:Noise3D;
+	private generator2:Noise3D;
+	private generator3:Noise3D;
+	private generator4:Noise3D;
+	private generator5:Noise3D;
+
+	public constructor(seed:number) {
+		this.seed = seed;
+		this.seedGenerator = mulberry32(this.seed);
+
+		this.generator = this.createGenerator3D();
+		this.generator1 = this.createGenerator3D();
+		this.generator2 = this.createGenerator3D();
+		this.generator3 = this.createGenerator3D();
+		this.generator4 = this.createGenerator3D();
+		this.generator5 = this.createGenerator3D();
+	}
+
+	private createGenerator2D() {
+		return makeNoise2D(this.seedGenerator() * Number.MAX_SAFE_INTEGER);
+	}
+
+	private createGenerator3D() {
+		return makeNoise3D(this.seedGenerator() * Number.MAX_SAFE_INTEGER);
+	}
+
+	public generate(chunk:Chunk) {
+		for (let x = 0; x < 16; x++) {
+			for (let z = 0; z < 16; z++) {
+				for (let y = 0; y < 128; y++) {
+					if (y === 0) {
+						chunk.setBlock(Block.bedrock.blockId, x, y, z);
+						continue;
+					}
+
+					const layer1 = (this.generator((chunk.x * 16 + x) / 32, y / 32, (chunk.z * 16 + z) / 32) + this.generator1((chunk.x * 16 + x) / 32, y / 32, (chunk.z * 16 + z) / 32)) / 2;
+					const layer2 = (this.generator2((chunk.x * 16 + x) / 128, y / 128, (chunk.z * 16 + z) / 128) + this.generator3((chunk.x * 16 + x) / 128, y / 128, (chunk.z * 16 + z) / 128)) / 2;
+					const layer3 = (this.generator4((chunk.x * 16 + x) / 16, y / 16, (chunk.z * 16 + z) / 16) + this.generator5((chunk.x * 16 + x) / 16, y / 16, (chunk.z * 16 + z) / 16)) / 2;
+					if ((layer1 + layer2 + layer3) / 3 >= 0.1) {
+						chunk.setBlock(Block.netherrack.blockId, x, y, z);
+					} else if (y < 10) {
+						chunk.setBlock(Block.lavaStill.blockId, x, y, z);
+					}
+				}
+			}
+		}
+	}
+}

server/mulberry32.ts

@@ -0,0 +1,10 @@
+// https://stackoverflow.com/a/47593316
+// this is good enough (and fast enough) for what i need
+export default function mulberry32(a:number) {
+	return function() {
+		let t = a += 0x6D2B79F5;
+		t = Math.imul(t ^ t >>> 15, t | 1);
+		t ^= t + Math.imul(t ^ t >>> 7, t | 61);
+		return ((t ^ t >>> 14) >>> 0) / 4294967296;
+	}
+}