import { Endian, IReader, IWriter, createWriter } from "bufferstuff"; import { ItemStack } from "./ItemStack"; import IInventory from "./IInventory"; export class Inventory implements IInventory { public itemStacks:Array; private size:number; private name:string; public constructor(size:number, name:string) { this.itemStacks = new Array(); for (let i = 0; i < size; i++) { this.itemStacks.push(null); } this.size = size; this.name = name; } public fromSave(reader:IReader) { const inventorySize = reader.readByte(); for (let i = 0; i < inventorySize; i++) { this.itemStacks[i] = ItemStack.FromSave(reader); } } public toSave(writer:IWriter) { writer.writeByte(this.size); for (const itemStack of this.itemStacks) { if (itemStack === null) { writer.writeShort(-1); continue; } itemStack.toSave(writer); } } addItemStack(itemStack:ItemStack) { // Check bottom inventory row (hotbar) first. /*let workingItemStack:ItemStack | null; for (let slotId = 9; slotId <= 35; slotId++) { if (itemStack.size === 0) { break; } if ((workingItemStack = this.itemStacks[slotId]) != null) { workingItemStack.insert(itemStack); } }*/ } getInventoryName() { return this.name; } getInventorySize() { return this.itemStacks.length; } getSlotItemStack(slotId:number) { return this.itemStacks[slotId]; } dropEmptyItemStacks() { for (let i = 0; i < this.itemStacks.length; i++) { const itemStack = this.itemStacks[i]; if (itemStack?.size === 0) { this.itemStacks[i] = null; } } } setSlotItemStack(slotId:number, itemStack: ItemStack | null) { if (slotId < 0 || slotId > this.size - 1) { throw new Error(`Tried to set an Inventory ItemStack out of bounds! Requested slot: ${slotId}, Inventory Size: ${this.size}`); } this.itemStacks[slotId] = itemStack; return this; } private calculateInventoryPayloadSize() { let bufferSize = 0; for (const stack of this.itemStacks) { if (stack) { bufferSize += 5; // short + byte + short } else { bufferSize += 2; // short } } return bufferSize; } constructInventoryPayload() { const writer = createWriter(Endian.BE, this.calculateInventoryPayloadSize()); for (const stack of this.itemStacks) { writer.writeShort(stack == null ? -1 : stack.itemID); if (stack != null) { writer.writeByte(stack.size); writer.writeShort(stack.damage); } } return writer.toBuffer(); } }