make the chest gui work sorta kinda, yeah.

package-lock.json

@@ -9,7 +9,7 @@
 			"version": "1.0.0",
 			"license": "MIT",
 			"dependencies": {
-				"bufferstuff": "^1.5.1",
+				"bufferstuff": "^1.7.1",
 				"dyetty": "^1.0.1",
 				"funky-array": "^1.0.0",
 				"hsconsole": "^1.0.2"
@@ -556,9 +556,9 @@
 			"peer": true
 		},
 		"node_modules/bufferstuff": {
-			"version": "1.5.1",
-			"resolved": "https://registry.npmjs.org/bufferstuff/-/bufferstuff-1.5.1.tgz",
-			"integrity": "sha512-IQF03UD+569MX80y70eOrFBhAhavEIOL12WJlVCKDSjOhCVueEY/MjwJPhW4Z1mbd9HcqEeZChldRwbqJP8k1w==",
+			"version": "1.7.1",
+			"resolved": "https://registry.npmjs.org/bufferstuff/-/bufferstuff-1.7.1.tgz",
+			"integrity": "sha512-CAnj456eQCXkuUfuK1up3hICxnidz0+h8CtRghrVNo1wB0Z/zySwDWcP7vzrAjoF4xmBWMpa7e/YK8Vl2p8Jjw==",
 			"license": "MIT"
 		},
 		"node_modules/caniuse-lite": {

package.json

@@ -21,7 +21,7 @@
 	},
 	"homepage": "https://github.com/tgpholly/mc-beta-server#readme",
 	"dependencies": {
-		"bufferstuff": "^1.5.1",
+		"bufferstuff": "^1.7.1",
 		"dyetty": "^1.0.1",
 		"funky-array": "^1.0.0",
 		"hsconsole": "^1.0.2"

server/MPClient.ts

@@ -27,6 +27,10 @@ import PlayerInventory from "./inventories/PlayerInventory";
 import SoundEffects from "./enums/SoundEffects";
 import Vec3 from "./Vec3";
 import TextColorParser from "./TextColorParser";
+import FunkyArray from "funky-array";
+import Window from "./windows/Window";
+import WindowChest from "./windows/WindowChest";
+import TileEntityChest from "./tileentities/TileEntityChest";
 
 export default class MPClient {
 	private readonly mcServer:MinecraftServer;
@@ -38,6 +42,8 @@ export default class MPClient {
 	private holdingIndex:number = 36; // First hotbar slot.
 	private diggingAt:Vec3;
 
+	private windows: FunkyArray<number, Window>;
+
 	public constructor(mcServer:MinecraftServer, socket:Socket, entity:Player) {
 		this.mcServer = mcServer;
 		this.socket = socket;
@@ -46,6 +52,7 @@ export default class MPClient {
 		this.dimension = 0;
 
 		this.diggingAt = new Vec3();
+		this.windows = new FunkyArray<number, Window>();
 	}
 
 	private mapCoordsFromFace(pos:Vec3, face:number) {
@@ -265,6 +272,20 @@ export default class MPClient {
 		this.diggingAt.set(packet.x, packet.y, packet.z);
 		this.mapCoordsFromFace(this.diggingAt, packet.face);
 
+		const blockClicked = Block.blocks[this.entity.world.getBlockId(packet.x, packet.y, packet.z)];
+		if (!this.entity.crouching && blockClicked && blockClicked.behaviour.interactable()) {
+			if (blockClicked.is(Block.chest)) {
+				const tileEntity = this.entity.world.getChunk(packet.x >> 4, packet.z >> 4).getTileEntity(packet.x, packet.y, packet.z);
+				if (tileEntity && tileEntity instanceof TileEntityChest) {
+					const window = new WindowChest(tileEntity.inventory);
+					this.windows.set(window.windowId, window);
+					window.openWindow(this);
+				}
+			}
+
+			return;
+		}
+
 		if (this.entity.entityAABB.intersects(AABB.getAABB(this.diggingAt.x, this.diggingAt.y, this.diggingAt.z, this.diggingAt.x + 1, this.diggingAt.y + 1, this.diggingAt.z + 1))) {
 			return;
 		}

server/blocks/Block.ts

@@ -159,6 +159,11 @@ export default class Block {
 		return this.behaviour.getBoundingBox(x, y, z);
 	}
 
+	// Comparison
+	public is(otherBlock: Block) {
+		return this.blockId === otherBlock.blockId;
+	}
+
 	// Define statics here
 	static readonly stone = new Block(1).setHardness(1.5).setBehaviour(Behaviour.stone).setBlockName("Stone");
 	static readonly grass = new Block(2).setHardness(0.6).setBehaviour(Behaviour.grass).setBlockName("Grass");

server/blocks/BlockBehaviour.ts

@@ -9,6 +9,7 @@ export default class BlockBehaviour implements IBlockBehaviour {
 
 	public placed(world:World, x:number, y:number, z:number) {}
 	public destroyed(world:World, x:number, y:number, z:number) {}
+	public interactable() { return false; }
 	public neighborBlockChange(world:World, x:number, y:number, z:number, blockId:number) {}
 	public droppedItem(blockId:number) { return blockId; }
 	public droppedCount(blockId:number) { return 1; }

server/blocks/BlockBehaviourChest.ts

@@ -13,4 +13,8 @@ export default class BlockBehaviourChest extends BlockBehaviour {
 		const chunk = world.getChunk(x >> 4, z >> 4);
 		chunk.removeTileEntity(x, y, z);
 	}
+
+	public interactable() {
+		return true;
+	}
 }

server/blocks/IBlockBehaviour.ts

@@ -8,6 +8,7 @@ export default interface IBlockBehaviour {
 
 	placed(world:World, x:number, y:number, z:number): void,
 	destroyed(world:World, x:number, y:number, z:number): void,
+	interactable(): boolean,
 	neighborBlockChange(world:World, x:number, y:number, z:number, blockId:number): void,
 	droppedItem: (blockId:number) => number,
 	droppedCount: (blockId:number) => number,

server/enums/InventoryType.ts

@@ -0,0 +1,8 @@
+enum InventoryType {
+	Chest = 0,
+	Workbench = 1,
+	Furnace = 2,
+	Dispenser = 3
+}
+
+export default InventoryType;

server/enums/Packet.ts

@@ -43,6 +43,7 @@ enum Packet {
 	EntityLookRelativeMove = 0x21,
 	EntityTeleport = 0x22,
 
+	OpenWindow = 0x64,
 	CloseWindow = 0x65,
 	WindowClick = 0x66,
 	SetSlot = 0x67,

server/packets/OpenWindow.ts

@@ -0,0 +1,39 @@
+import { createWriter, Endian, IReader } from "bufferstuff";
+import InventoryType from "../enums/InventoryType";
+import Packet from "../enums/Packet";
+import IPacket from "./IPacket";
+
+export default class PacketOpenWindow implements IPacket {
+	public packetId = Packet.OpenWindow;
+	public windowId:number;
+	public inventoryType:InventoryType;
+	public windowTitle: string;
+	public numberOfSlots: number;
+
+	public constructor(windowId?: number, inventoryType?: InventoryType, windowTitle?: string, numberOfSlots?: number) {
+		if (typeof(windowId) === "number" && typeof(inventoryType) === "number" && typeof(windowTitle) === "string" && typeof(numberOfSlots) === "number") {
+			this.windowId = windowId;
+			this.inventoryType = inventoryType;
+			this.windowTitle = windowTitle;
+			this.numberOfSlots = numberOfSlots;
+		}   else {
+			this.windowId = Number.MIN_VALUE;
+			this.inventoryType = Number.MIN_VALUE;
+			this.windowTitle =  "";
+			this.numberOfSlots = Number.MIN_VALUE;
+		}
+	}
+
+	public readData(reader: IReader) {
+		this.windowId = reader.readByte();
+		this.inventoryType = reader.readByte();
+		this.windowTitle = reader.readString();
+		this.numberOfSlots = reader.readByte();
+
+		return this;
+	}
+
+	public writeData() {
+		return createWriter(Endian.BE).writeUByte(this.packetId).writeByte(this.windowId).writeByte(this.inventoryType).writeJavaUTF(this.windowTitle).writeByte(this.numberOfSlots).toBuffer();
+	}
+}

server/windows/Window.ts

@@ -0,0 +1,24 @@
+import InventoryType from "../enums/InventoryType";
+import Inventory from "../inventories/Inventory";
+import MPClient from "../MPClient";
+import PacketOpenWindow from "../packets/OpenWindow";
+
+export default abstract class Window {
+	public static WINDOW_GLOBAL_COUNTER = 1;
+	
+	public windowId = Window.WINDOW_GLOBAL_COUNTER++;
+	public inventoryType: InventoryType;
+	public inventory: Inventory;
+
+	public constructor(inventoryType: InventoryType, inventory: Inventory) {
+		this.inventoryType = inventoryType;
+		this.inventory = inventory;
+	}
+
+	openWindow(mpClient: MPClient) {
+		const windowPacket = new PacketOpenWindow(this.windowId, this.inventoryType, this.inventory.getInventoryName(), this.inventory.getInventorySize()).writeData();
+		//const inventoryDataPayload = this.inventory.constructInventoryPayload();
+		//mpClient.send(Buffer.concat([ windowPacket, inventoryDataPayload ], windowPacket.length + inventoryDataPayload.length));
+		mpClient.send(windowPacket);
+	}
+}

server/windows/WindowChest.ts

@@ -0,0 +1,9 @@
+import InventoryType from "../enums/InventoryType";
+import Inventory from "../inventories/Inventory";
+import Window from "./Window";
+
+export default class WindowChest extends Window {
+	public constructor(inventory: Inventory) {
+		super(InventoryType.Chest, inventory);
+	}
+}