INFINITE TERRAIN!!!!

config.json

@@ -1,5 +1,6 @@
 {
 	"port": 25565,
 	"onlineMode": false,
-	"maxPlayers": 20
+	"maxPlayers": 20,
+	"seed": "really janky"
 }

config.ts

@@ -1,5 +1,6 @@
 export interface Config {
 	port: number,
 	onlineMode: boolean,
-	maxPlayers: number
+	maxPlayers: number,
+	seed: number|string,
 }

external/OpenSimplex2D.ts

@@ -0,0 +1,195 @@
+// This is free and unencumbered software released into the public domain
+
+import shuffleSeed from "./shuffle_seed";
+
+const NORM_2D = 1.0 / 47.0;
+const SQUISH_2D = (Math.sqrt(2 + 1) - 1) / 2;
+const STRETCH_2D = (1 / Math.sqrt(2 + 1) - 1) / 2;
+
+export type Noise2D = (x: number, y: number) => number;
+
+interface Contribution2D {
+  dx: number;
+  dy: number;
+  next?: Contribution2D;
+  xsb: number;
+  ysb: number;
+}
+
+function contribution2D(
+  multiplier: number,
+  xsb: number,
+  ysb: number,
+): Contribution2D {
+  return {
+    dx: -xsb - multiplier * SQUISH_2D,
+    dy: -ysb - multiplier * SQUISH_2D,
+    xsb,
+    ysb,
+  };
+}
+
+export function makeNoise2D(clientSeed: number): Noise2D {
+  const contributions: Contribution2D[] = [];
+  for (let i = 0; i < p2D.length; i += 4) {
+    const baseSet = base2D[p2D[i]];
+    let previous: Contribution2D | null = null;
+    let current: Contribution2D | null = null;
+    for (let k = 0; k < baseSet.length; k += 3) {
+      current = contribution2D(baseSet[k], baseSet[k + 1], baseSet[k + 2]);
+      if (previous === null) contributions[i / 4] = current;
+      else previous.next = current;
+      previous = current;
+    }
+    current!.next = contribution2D(p2D[i + 1], p2D[i + 2], p2D[i + 3]);
+  }
+  const lookup: Contribution2D[] = [];
+  for (let i = 0; i < lookupPairs2D.length; i += 2) {
+    lookup[lookupPairs2D[i]] = contributions[lookupPairs2D[i + 1]];
+  }
+
+  const perm = new Uint8Array(256);
+  const perm2D = new Uint8Array(256);
+  const source = new Uint8Array(256);
+  for (let i = 0; i < 256; i++) source[i] = i;
+  let seed = new Uint32Array(1);
+  seed[0] = clientSeed;
+  seed = shuffleSeed(shuffleSeed(shuffleSeed(seed)));
+  for (let i = 255; i >= 0; i--) {
+    seed = shuffleSeed(seed);
+    const r = new Uint32Array(1);
+    r[0] = (seed[0] + 31) % (i + 1);
+    if (r[0] < 0) r[0] += i + 1;
+    perm[i] = source[r[0]];
+    perm2D[i] = perm[i] & 0x0e;
+    source[r[0]] = source[i];
+  }
+
+  return (x: number, y: number): number => {
+    const stretchOffset = (x + y) * STRETCH_2D;
+
+    const xs = x + stretchOffset;
+    const ys = y + stretchOffset;
+
+    const xsb = Math.floor(xs);
+    const ysb = Math.floor(ys);
+
+    const squishOffset = (xsb + ysb) * SQUISH_2D;
+
+    const dx0 = x - (xsb + squishOffset);
+    const dy0 = y - (ysb + squishOffset);
+
+    const xins = xs - xsb;
+    const yins = ys - ysb;
+
+    const inSum = xins + yins;
+    const hash = (xins - yins + 1) |
+      (inSum << 1) |
+      ((inSum + yins) << 2) |
+      ((inSum + xins) << 4);
+
+    let value = 0;
+
+    for (
+      let c: Contribution2D | undefined = lookup[hash];
+      c !== undefined;
+      c = c.next
+    ) {
+      const dx = dx0 + c.dx;
+      const dy = dy0 + c.dy;
+
+      const attn = 2 - dx * dx - dy * dy;
+      if (attn > 0) {
+        const px = xsb + c.xsb;
+        const py = ysb + c.ysb;
+
+        const indexPartA = perm[px & 0xff];
+        const index = perm2D[(indexPartA + py) & 0xff];
+
+        const valuePart = gradients2D[index] * dx + gradients2D[index + 1] * dy;
+
+        value += attn * attn * attn * attn * valuePart;
+      }
+    }
+
+    return value * NORM_2D;
+  };
+}
+
+const base2D = [
+  [1, 1, 0, 1, 0, 1, 0, 0, 0],
+  [1, 1, 0, 1, 0, 1, 2, 1, 1],
+];
+
+const gradients2D = [
+  5,
+  2,
+  2,
+  5,
+  -5,
+  2,
+  -2,
+  5,
+  5,
+  -2,
+  2,
+  -5,
+  -5,
+  -2,
+  -2,
+  -5,
+];
+
+const lookupPairs2D = [
+  0,
+  1,
+  1,
+  0,
+  4,
+  1,
+  17,
+  0,
+  20,
+  2,
+  21,
+  2,
+  22,
+  5,
+  23,
+  5,
+  26,
+  4,
+  39,
+  3,
+  42,
+  4,
+  43,
+  3,
+];
+
+const p2D = [
+  0,
+  0,
+  1,
+  -1,
+  0,
+  0,
+  -1,
+  1,
+  0,
+  2,
+  1,
+  1,
+  1,
+  2,
+  2,
+  0,
+  1,
+  2,
+  0,
+  2,
+  1,
+  0,
+  0,
+  0,
+];

external/shuffle_seed.ts

@@ -0,0 +1,8 @@
+// This is free and unencumbered software released into the public domain
+
+export default function shuffleSeed(seed: Uint32Array): Uint32Array {
+	const newSeed = new Uint32Array(1);
+	newSeed[0] = seed[0] * 1664525 + 1013904223;
+	return newSeed;
+  }
+  

server/Chunk.ts

@@ -1,11 +1,14 @@
+import { FunkyArray } from "../funkyArray";
 import { Block } from "./blocks/Block";
+import { Player } from "./entities/Player";
 import { World } from "./World";
 
 export class Chunk {
 	private readonly MAX_HEIGHT:number = 128;
 	private readonly world:World;
-	private readonly x:number;
+	public readonly x:number;
-	private readonly z:number;
+	public readonly z:number;
+	public readonly playersInChunk:FunkyArray<number, Player>;
 
 	private blocks:Uint8Array;
 
@@ -17,6 +20,8 @@ export class Chunk {
 		this.world = world;
 		this.x = x;
 		this.z = z;
+		this.playersInChunk = new FunkyArray<number, Player>();
+
 		this.blocks = new Uint8Array(16 * 16 * this.MAX_HEIGHT);
 
 		this.world.generator.generate(this);

server/MPClient.ts

@@ -1,16 +1,64 @@
 import { Socket } from "net";
-import { IEntity } from "./entities/IEntity";
+import { Reader, Writer } from "../bufferStuff";
-import { Writer } from "../bufferStuff";
+import { Packets } from "./enums/Packets";
+import { PacketPlayer } from "./packets/Player";
+import { PacketPlayerPosition } from "./packets/PlayerPosition";
+import { PacketPlayerLook } from "./packets/PlayerLook";
+import { PacketPlayerPositionLook } from "./packets/PlayerPositionLook";
+import { Player } from "./entities/Player";
+import { PacketChat } from "./packets/Chat";
 
 export class MPClient {
 	private readonly socket:Socket;
-	private readonly entity:IEntity;
+	public readonly entity:Player;
 
-	public constructor(socket:Socket, entity:IEntity) {
+	public constructor(socket:Socket, entity:Player) {
 		this.socket = socket;
 		this.entity = entity;
 	}
 
+	handlePacket(reader:Reader) {
+		const packetId = reader.readUByte();
+
+		switch (packetId) {
+			case Packets.Chat:               this.handleChat(new PacketChat().readData(reader)); break;
+			case Packets.Player:             this.handlePacketPlayer(new PacketPlayer().readData(reader)); break;
+			case Packets.PlayerPosition:     this.handlePacketPlayerPosition(new PacketPlayerPosition().readData(reader)); break;
+			case Packets.PlayerLook:         this.handlePacketPlayerLook(new PacketPlayerLook().readData(reader)); break;
+			case Packets.PlayerPositionLook: this.handlePacketPlayerPositionLook(new PacketPlayerPositionLook().readData(reader)); break;
+		}
+	}
+	
+	handleChat(packet:PacketChat) {
+		const message = packet.message.split(" ");
+		if (message[0] === "/tp") {
+			this.send(new PacketPlayerPositionLook(parseFloat(message[1]), parseFloat(message[2]), parseFloat(message[2]) + 0.62, parseFloat(message[3]), 0, 0, false).writeData());
+		}
+	}
+
+	handlePacketPlayer(packet:PacketPlayer) {
+		// TODO
+	}
+
+	handlePacketPlayerPosition(packet:PacketPlayerPosition) {
+		this.entity.x = packet.x;
+		this.entity.y = packet.y;
+		this.entity.z = packet.z;
+	}
+
+	handlePacketPlayerLook(packet:PacketPlayerLook) {
+		this.entity.yaw = packet.yaw;
+		this.entity.pitch = packet.pitch;
+	}
+
+	handlePacketPlayerPositionLook(packet:PacketPlayerPositionLook) {
+		this.entity.x = packet.x;
+		this.entity.y = packet.y;
+		this.entity.z = packet.z;
+		this.entity.yaw = packet.yaw;
+		this.entity.pitch = packet.pitch;
+	}
+
 	send(buffer:Buffer|Writer) {
 		if (buffer instanceof Writer) {
 			this.socket.write(buffer.toBuffer());

server/MinecraftServer.ts

@@ -17,6 +17,7 @@ import { Chunk } from "./Chunk";
 import { PacketMapChunk } from "./packets/MapChunk";
 import { PacketPlayerPositionLook } from "./packets/PlayerPositionLook";
 import { PacketPreChunk } from "./packets/PreChunk";
+import { PacketChat } from "./packets/Chat";
 
 export class MinecraftServer {
 	private static readonly PROTOCOL_VERSION = 14;
@@ -29,25 +30,56 @@ export class MinecraftServer {
 	private server:Server;
 	private serverClock:NodeJS.Timer;
 	private tickCounter:number = 0;
-	private clients:FunkyArray<number, MPClient>;
+	private clients:FunkyArray<string, MPClient>;
 	private worlds:FunkyArray<number, World>;
+	private overworld:World;
+
+	// https://stackoverflow.com/a/7616484
+	// Good enough for the world seed.
+	private hashCode(string:string) : number {
+		let hash = 0, i, chr;
+		if (string.length === 0) {
+			return hash;
+		}
+		for (i = 0; i < string.length; i++) {
+			chr = string.charCodeAt(i);
+			hash = ((hash << 5) - hash) + chr;
+			hash |= 0;
+		}
+		return hash;
+	}
 
 	public constructor(config:Config) {
 		this.config = config;
 
-		this.clients = new FunkyArray<number, MPClient>();
+		this.clients = new FunkyArray<string, MPClient>();
+
+		// Convert seed if needed
+		const worldSeed = typeof(this.config.seed) === "string" ? this.hashCode(this.config.seed) : this.config.seed;
 
 		this.worlds = new FunkyArray<number, World>();
-		this.worlds.set(0, new World());
+		this.worlds.set(0, this.overworld = new World(worldSeed));
+
+		// Generate spawn area (overworld)
+		const generateStartTime = Date.now();
+		Console.printInfo("[Overworld] Generating spawn area...");
+		let generatedCount = 0;
+		for (let x = -3; x < 3; x++) {
+			for (let z = -3; z < 3; z++) {
+				this.overworld.getChunk(x, z);
+				if (generatedCount++ % 5 === 0) {
+					Console.printInfo(`[Overworld] Generating spawn area... ${Math.floor(generatedCount / 36 * 100)}%`);
+				}
+			}	
+		}
+		Console.printInfo(`Done! Took ${Date.now() - generateStartTime}ms`);
 
 		this.serverClock = setInterval(() => {
 			// Every 1 sec
 			if (this.tickCounter % MinecraftServer.TICK_RATE === 0)  {
 				if (this.clients.length !== 0) {
-					const timePacket = new PacketTimeUpdate(this.tickCounter).writeData();
 					this.clients.forEach(client => {
 						client.send(this.keepalivePacket);
-						client.send(timePacket);
 					});
 				}
 			}
@@ -70,11 +102,26 @@ export class MinecraftServer {
 	}
 
 	onConnection(socket:Socket) {
+		let mpClient:MPClient;
+
+		const playerDisconnect = (err:Error) => {
+			mpClient.entity.world.removeEntity(mpClient.entity);
+			this.clients.remove(mpClient.entity.username);
+			this.sendToAllClients(new PacketChat(`\u00a7e${mpClient.entity.username} left the game`).writeData());
+		}
+		socket.on("close", playerDisconnect.bind(this));
+		socket.on("error", playerDisconnect.bind(this));
+
 		socket.on("data", chunk => {
 			const reader = new Reader(chunk);
 
+			// Let mpClient take over if it exists
+			if (mpClient instanceof MPClient) {
+				mpClient.handlePacket(reader);
+				return;
+			}
+
 			const packetId = reader.readUByte();
-			//console.log(packetId);
 			switch (packetId) {
 				// Handle timeouts at some point, idk.
 				case Packets.KeepAlive:
@@ -95,20 +142,17 @@ export class MinecraftServer {
 					if (world instanceof World) {
 						const clientEntity = new Player(this, world, loginPacket.username);
 						world.addEntity(clientEntity);
-						socket.write(new PacketLoginRequest(clientEntity.entityId, "", 0, -1).writeData());
+
+						const client = mpClient = new MPClient(socket, clientEntity);
+						clientEntity.mpClient = client;
+						this.clients.set(loginPacket.username, client);
+
+						this.sendToAllClients(new PacketChat(`\u00a7e${loginPacket.username} joined the game`).writeData());
+
+						socket.write(new PacketLoginRequest(clientEntity.entityId, "", 0, 0).writeData());
 						socket.write(new PacketSpawnPosition(8, 64, 8).writeData());
 
-						socket.write(new PacketPreChunk(0, 0, true).writeData());
+						socket.write(new PacketPlayerPositionLook(8, 70, 70.62, 8, 0, 0, false).writeData());
-						const chunk = world.getChunk(0, 0);
-						if (chunk instanceof Chunk) {
-							(async () => {
-								const chunkData = await (new PacketMapChunk(0, 0, 0, 15, 127, 15, chunk).writeData());
-								socket.write(chunkData);
-								socket.write(new PacketPlayerPositionLook(8, 66, 66.62, 8, 0, 0, false).writeData());
-							})();
-						}
-						const client = new MPClient(socket, clientEntity);
-						this.clients.set(this.totalClients++, client);
 					} else {
 						socket.write(new PacketDisconnectKick("Failed to find world to put player in.").writeData());
 					}

server/World.ts

@@ -1,7 +1,10 @@
+import { Console } from "../console";
 import { FunkyArray } from "../funkyArray";
 import { Chunk } from "./Chunk";
 import { IEntity } from "./entities/IEntity";
+import { Player } from "./entities/Player";
 import { FlatGenerator } from "./generators/Flat";
+import { HillyGenerator } from "./generators/Hilly";
 import { IGenerator } from "./generators/IGenerator";
 
 export class World {
@@ -10,30 +13,78 @@ export class World {
 
 	public generator:IGenerator;
 
-	public constructor() {
+	public constructor(seed:number) {
 		this.chunks = new FunkyArray<number, Chunk>();
 		this.entites = new FunkyArray<number, IEntity>();
-		this.generator = new FlatGenerator();
+		this.generator = new HillyGenerator(seed);
-		this.chunks.set(Chunk.CreateCoordPair(0, 0), new Chunk(this, 0, 0));
 	}
 
 	public addEntity(entity:IEntity) {
 		this.entites.set(entity.entityId, entity);
 	}
 
-	public removeEntity(entity:IEntity|number) {
+	// TODO: getChunkByCoordPair failed in here during removeEntity, figure out why.
-		if (typeof(entity) === "number") {
+	public removeEntity(entity:IEntity) {
-			return this.entites.remove(entity);
+		if (entity instanceof Player) {
+			for (let coordPair of entity.loadedChunks) {
+				const chunk = this.getChunkByCoordPair(coordPair);
+				chunk.playersInChunk.remove(entity.entityId);
+
+				if (chunk.playersInChunk.length === 0) {
+					this.unloadChunk(coordPair);
+				}
+			}
 		}
 
-		return this.entites.remove(entity.entityId);
+		this.entites.remove(entity.entityId);
+		// TODO: Inform clients about entity removal
 	}
 
-	public getChunk(x:number, z:number) {
+	public getChunk(x:number, z:number, generate:boolean = true) {
-		return this.chunks.get(Chunk.CreateCoordPair(x, z));
+		const coordPair = Chunk.CreateCoordPair(x, z);
+		const existingChunk = this.chunks.get(coordPair);
+		if (!(existingChunk instanceof Chunk)) {
+			if (generate) {
+				return this.chunks.set(coordPair, new Chunk(this, x, z));
+			}
+
+			throw new Error(`BADLOOKUP: Chunk [${x}, ${z}] does not exist.`);
+		}
+
+		return existingChunk;
+	}
+
+	public getChunkByCoordPair(coordPair:number) {
+		const existingChunk = this.chunks.get(coordPair);
+		if (!(existingChunk instanceof Chunk)) {
+			throw new Error(`BADLOOKUP: Chunk ${coordPair} does not exist.`);
+		}
+
+		return existingChunk;
+	}
+
+	public unloadChunk(coordPair:number) {
+		// TODO: Save to disk
+		this.chunks.remove(coordPair);
 	}
 
 	public tick(tickCount:number) {
+		this.entites.forEach(entity => {
+			if (entity instanceof Player) {
+				if (entity.justUnloaded.length > 0) {
+					for (let coordPair of entity.justUnloaded) {
+						const chunkToUnload = this.getChunkByCoordPair(coordPair);
+						chunkToUnload.playersInChunk.remove(entity.entityId);
+						if (chunkToUnload.playersInChunk.length === 0) {
+							this.unloadChunk(coordPair);
+						}
+					}
 
+					entity.justUnloaded = new Array<number>();
+				}
+			}
+
+			entity.onTick();
+		})
 	}
 }

server/blocks/Block.ts

@@ -12,4 +12,15 @@ export class Block {
 
 
 	static bedrock = new Block(7);
+
+	static waterStill = new Block(9);
+
+
+
+
+
+
+
+	static wood = new Block(17);
+	static leaves = new Block(18);
 }

server/entities/Entity.ts

@@ -20,4 +20,10 @@ export class Entity implements IEntity {
 		this.world = world;
 		this.x = this.y = this.z = this.lastX = this.lastY = this.lastZ = 0;
 	}
+
+	onTick() {
+		this.lastX = this.x;
+		this.lastY = this.y;
+		this.lastZ = this.z;
+	}
 }

server/entities/EntityLiving.ts

@@ -0,0 +1,18 @@
+import { World } from "../World";
+import { Entity } from "./Entity";
+
+export class EntityLiving extends Entity {
+	public yaw:number;
+	public pitch:number;
+
+	public constructor(world:World) {
+		super(world);
+
+		this.yaw = 0;
+		this.pitch = 0;
+	}
+
+	onTick() {
+		super.onTick();
+	}
+}

server/entities/IEntity.ts

@@ -1,3 +1,10 @@
 export interface IEntity {
-	entityId:number
+	entityId:number,
+	x:number,
+	y:number,
+	z:number,
+	lastX:number,
+	lastY:number,
+	lastZ:number,
+	onTick:() => void
 }

server/entities/Player.ts

@@ -1,18 +1,81 @@
+import { FunkyArray } from "../../funkyArray";
+import { Chunk } from "../Chunk";
+import { MPClient } from "../MPClient";
 import { MinecraftServer } from "../MinecraftServer";
 import { World } from "../World";
+import { PacketMapChunk } from "../packets/MapChunk";
+import { EntityLiving } from "./EntityLiving";
 import { Entity } from "./Entity";
+import { Socket } from "net";
+import { PacketPreChunk } from "../packets/PreChunk";
 
-export class Player extends Entity {
+export class Player extends EntityLiving {
 	public username:string;
 	private server:MinecraftServer;
+	private firstUpdate:boolean;
+	public loadedChunks:Array<number>;
+	public justUnloaded:Array<number>;
+	public mpClient?:MPClient;
 
 	public constructor(server:MinecraftServer, world:World, username:string) {
 		super(world);
 		this.server = server;
+		this.firstUpdate = true;
+		this.loadedChunks = new Array<number>();
+		this.justUnloaded = new Array<number>();
 
 		this.username = username;
 		this.x = 8;
 		this.y = 64;
 		this.z = 8;
 	}
+
+	onTick() {
+		const bitX = this.x >> 4;
+		const bitZ = this.z >> 4;
+		if (bitX != this.lastX >> 4 || bitZ != this.lastZ >> 4 || this.firstUpdate) {
+			if (this.firstUpdate) {
+				this.firstUpdate = false;
+				this.mpClient?.send(new PacketPreChunk(0, 0, true).writeData());
+				const chunk = this.world.getChunk(0, 0);
+				(async () => {
+					const chunkData = await (new PacketMapChunk(0, 0, 0, 15, 127, 15, chunk).writeData());
+					this.mpClient?.send(chunkData);
+				})();
+			}
+
+			// Load or keep any chunks we need
+			const currentLoads = [];
+			for (let x = bitX - 6; x < bitX + 6; x++) {
+				for (let z = bitZ - 6; z < bitZ + 6; z++) {
+					const coordPair = Chunk.CreateCoordPair(x, z);
+					if (!this.loadedChunks.includes(coordPair)) {
+						const chunk = this.world.getChunk(x, z);
+						this.mpClient?.send(new PacketPreChunk(x, z, true).writeData());
+						this.loadedChunks.push(coordPair);
+						chunk.playersInChunk.set(this.entityId, this);
+						(async () => {
+							const chunkData = await (new PacketMapChunk(x, 0, z, 15, 127, 15, chunk).writeData());
+							this.mpClient?.send(chunkData);
+						})();
+					}
+					currentLoads.push(coordPair);
+				}	
+			}
+
+			// Mark any unaccounted chunks for unload
+			for (let coordPair of this.loadedChunks) {
+				if (!currentLoads.includes(coordPair)) {
+					this.justUnloaded.push(coordPair);
+					const chunkToUnload = this.world.getChunkByCoordPair(coordPair);
+					this.mpClient?.send(new PacketPreChunk(chunkToUnload.x, chunkToUnload.z, false).writeData());
+				}
+			}
+
+			// Overwrite loaded chunks
+			this.loadedChunks = currentLoads;
+		}
+
+		super.onTick();
+	}
 }

server/generators/Hilly.ts

@@ -0,0 +1,94 @@
+import { Block } from "../blocks/Block";
+import { Chunk } from "../Chunk";
+import { IGenerator } from "./IGenerator";
+import { Noise2D, makeNoise2D } from "../../external/OpenSimplex2D";
+import shuffle_seed from "../../external/shuffle_seed";
+
+export class HillyGenerator implements IGenerator {
+	private seed:number;
+	private generator:Noise2D;
+	private generator1:Noise2D;
+	private generator2:Noise2D;
+	private generator3:Noise2D;
+	private generator4:Noise2D;
+	private generator5:Noise2D;
+	private generator6:Noise2D;
+	private oceanGenerator:Noise2D;
+	private mountainGenerator:Noise2D;
+
+	public constructor(seed:number) {
+		this.seed = seed;
+
+		const generatorSeed = this.mulberry32(this.seed);
+		this.generator = makeNoise2D(generatorSeed() * Number.MAX_SAFE_INTEGER);
+		this.generator1 = makeNoise2D(generatorSeed() * Number.MAX_SAFE_INTEGER);
+		this.generator2 = makeNoise2D(generatorSeed() * Number.MAX_SAFE_INTEGER);
+		this.generator3 = makeNoise2D(generatorSeed() * Number.MAX_SAFE_INTEGER);
+		this.generator4 = makeNoise2D(generatorSeed() * Number.MAX_SAFE_INTEGER);
+		this.generator5 = makeNoise2D(generatorSeed() * Number.MAX_SAFE_INTEGER);
+		this.generator6 = makeNoise2D(generatorSeed() * Number.MAX_SAFE_INTEGER);
+		this.oceanGenerator = makeNoise2D(generatorSeed() * Number.MAX_SAFE_INTEGER);
+		this.mountainGenerator = makeNoise2D(generatorSeed() * Number.MAX_SAFE_INTEGER);
+	}
+
+	// https://stackoverflow.com/a/47593316
+	// This is good enough (and fast enough) for what is needed here.
+	private mulberry32(a:number) {
+		return function() {
+			var 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);
+		let colY = 0, colDirtMin = 0, colWaterY = 0, orgColY = 0;
+		for (let x = 0; x < 16; x++) {
+			for (let z = 0; z < 16; z++) {
+				const oceanValue = this.oceanGenerator((chunk.x * 16 + x) / 128, (chunk.z * 16 + z) / 128) * 100;
+				orgColY = colWaterY = colY = 60 + (
+					this.generator((chunk.x * 16 + x) / 16, (chunk.z * 16 + z) / 16) * 16 +
+					this.generator1((chunk.x * 16 + x) / 16, (chunk.z * 16 + z) / 16) * 16 +
+					this.generator2((chunk.x * 16 + x) / 8, (chunk.z * 16 + z) / 8) * 8 +
+					this.generator3((chunk.x * 16 + x) / 4, (chunk.z * 16 + z) / 4) * 4 +
+					this.generator4((chunk.x * 16 + x) / 4, (chunk.z * 16 + z) / 4) * 4 +
+					this.generator5((chunk.x * 16 + x) / 10, (chunk.z * 16 + z) / 10) * 10 +
+					this.generator6((chunk.x * 16 + x) / 16, (chunk.z * 16 + z) / 16) * 16 +
+					oceanValue +
+					(Math.max(this.mountainGenerator((chunk.x * 16 + x) / 128, (chunk.z * 16 + z) / 128), 0) * 50 + Math.min(oceanValue, 0))
+				) / 9;
+				colDirtMin = colY - 2;
+				chunk.setBlock(Block.grass.blockId, x, colY, z);
+
+				while (colY-- > 0) {
+					if (colY >= colDirtMin) {
+						chunk.setBlock(Block.dirt.blockId, x, colY, z);
+					} else if (colY === 0) {
+						chunk.setBlock(Block.bedrock.blockId, x, colY, z);
+					} else {
+						chunk.setBlock(Block.stone.blockId, x, colY, z);
+					}
+				}
+
+				if (colWaterY <= 58) {
+					chunk.setBlock(Block.dirt.blockId, x, colWaterY, z);
+				}
+				while (colWaterY <= 58) {
+					colWaterY++;
+					chunk.setBlock(Block.waterStill.blockId, x, colWaterY, z);
+				}
+
+				if (chunk.getBlockId(x, orgColY + 1, z) !== Block.waterStill.blockId && chunk.getBlockId(x, orgColY, z) === Block.grass.blockId && treeRNG() > 0.995) {
+					chunk.setBlock(Block.dirt.blockId, x, orgColY, z);
+					let tY = orgColY + 1;
+					while (tY < orgColY + 5) {
+						chunk.setBlock(Block.wood.blockId, x, tY, z);
+						tY++;
+					}
+				}
+			}
+		}
+	}
+}

server/packets/Chat.ts

@@ -6,8 +6,12 @@ export class PacketChat implements IPacket {
 	public packetId = Packets.Chat;
 	public message:string;
 
-	public constructor(message:string) {
+	public constructor(message?:string) {
+		if (typeof(message) === "string") {
 			this.message = message;
+		} else {
+			this.message = "";
+		}
 	}
 
 	public readData(reader:Reader) {

server/packets/MapChunk.ts

@@ -61,7 +61,7 @@ export class PacketMapChunk implements IPacket {
 					return reject(err);
 				}
 
-				resolve(new Writer(18).writeUByte(this.packetId).writeInt(this.x).writeShort(this.y).writeInt(this.z).writeUByte(this.sizeX).writeUByte(this.sizeY).writeUByte(this.sizeZ).writeInt(data.length).writeBuffer(data).toBuffer());
+				resolve(new Writer(18).writeUByte(this.packetId).writeInt(this.x << 4).writeShort(this.y).writeInt(this.z << 4).writeUByte(this.sizeX).writeUByte(this.sizeY).writeUByte(this.sizeZ).writeInt(data.length).writeBuffer(data).toBuffer());
 			});
 		});
 	}

server/packets/Player.ts

@@ -6,8 +6,12 @@ export class PacketPlayer implements IPacket {
 	public packetId = Packets.Player;
 	public onGround:boolean;
 
-	public constructor(onGround:boolean = false) {
+	public constructor(onGround?:boolean) {
+		if (typeof(onGround) === "boolean") {
 			this.onGround = onGround;
+		} else {
+			this.onGround = false;
+		}
 	}
 
 	public readData(reader:Reader) {

server/packets/PlayerLook.ts

@@ -8,10 +8,16 @@ export class PacketPlayerLook implements IPacket {
 	public pitch:number;
 	public onGround:boolean;
 
-	public constructor(yaw:number, pitch:number, onGround:boolean = false) {
+	public constructor(yaw?:number, pitch?:number, onGround?:boolean) {
+		if (typeof(yaw) === "number" && typeof(pitch) === "number" && typeof(onGround) === "boolean") {
 			this.yaw = yaw;
 			this.pitch = pitch;
 			this.onGround = onGround;
+		} else {
+			this.yaw = Number.MIN_VALUE;
+			this.pitch = Number.MIN_VALUE;
+			this.onGround = false;
+		}
 	}
 
 	public readData(reader:Reader) {

server/packets/PlayerPosition.ts

@@ -10,12 +10,20 @@ export class PacketPlayerPosition implements IPacket {
 	public z:number;
 	public onGround:boolean;
 
-	public constructor(x:number, y:number, stance:number, z:number, onGround:boolean = false) {
+	public constructor(x?:number, y?:number, stance?:number, z?:number, onGround?:boolean) {
+		if (typeof(x) === "number" && typeof(y) === "number" && typeof(stance) === "number" && typeof(z) === "number" && typeof(onGround) === "boolean") {
 			this.x = x;
 			this.y = y;
 			this.stance = stance;
 			this.z = z;
 			this.onGround = onGround;
+		} else {
+			this.x = Number.MIN_VALUE;
+			this.y = Number.MIN_VALUE;
+			this.stance = Number.MIN_VALUE;
+			this.z = Number.MIN_VALUE;
+			this.onGround = false;
+		}
 	}
 
 	public readData(reader:Reader) {

server/packets/PlayerPositionLook.ts

@@ -12,7 +12,8 @@ export class PacketPlayerPositionLook implements IPacket {
 	public pitch:number;
 	public onGround:boolean;
 
-	public constructor(x:number, y:number, stance:number, z:number, yaw:number, pitch:number, onGround:boolean = false) {
+	public constructor(x?:number, y?:number, stance?:number, z?:number, yaw?:number, pitch?:number, onGround?:boolean) {
+		if (typeof(x) === "number" && typeof(y) === "number" && typeof(stance) === "number" && typeof(z) === "number" && typeof(yaw) === "number" && typeof(pitch) === "number" && typeof(onGround) === "boolean") {
 			this.x = x;
 			this.y = y;
 			this.stance = stance;
@@ -20,6 +21,15 @@ export class PacketPlayerPositionLook implements IPacket {
 			this.yaw = yaw;
 			this.pitch = pitch;
 			this.onGround = onGround;
+		} else {
+			this.x = Number.MIN_VALUE;
+			this.y = Number.MIN_VALUE;
+			this.stance = Number.MIN_VALUE;
+			this.z = Number.MIN_VALUE;
+			this.yaw = Number.MIN_VALUE;
+			this.pitch = Number.MIN_VALUE;
+			this.onGround = false;
+		}
 	}
 
 	public readData(reader:Reader) {

server/packets/TimeUpdate.ts

@@ -4,14 +4,14 @@ import { IPacket } from "./IPacket";
 
 export class PacketTimeUpdate implements IPacket {
 	public packetId = Packets.TimeUpdate;
-	public time:number;
+	public time:bigint;
 
-	public constructor(time:number) {
+	public constructor(time:bigint) {
 		this.time = time;
 	}
 
 	public readData(reader:Reader) {
-		this.time = Number(reader.readLong());
+		this.time = reader.readLong();
 
 		return this;
 	}