From 61586092d12fcd7ae18e47270e5f2fe5333bc479 Mon Sep 17 00:00:00 2001
From: Holly <onlinegamer748@gmail.com>
Date: Fri, 16 Feb 2024 09:34:02 +0000
Subject: [PATCH] Add Item and Vector type implementations to MetadataWriter

---
 server/MetadataWriter.ts | 23 +++++++++++++++++++++--
 server/Vec3.ts           |  4 ++++
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/server/MetadataWriter.ts b/server/MetadataWriter.ts
index ae0d5af..65a8235 100644
--- a/server/MetadataWriter.ts
+++ b/server/MetadataWriter.ts
@@ -1,12 +1,14 @@
 import { createWriter, Endian } from "bufferstuff";
 import { FunkyArray } from "../funkyArray";
 import { MetadataFieldType } from "./enums/MetadataFieldType";
+import Vec3 from "./Vec3";
+import { ItemStack } from "./inventories/ItemStack";
 
 export class MetadataEntry {
 	public type:MetadataFieldType;
-	public value:number|string;
+	public value:number|string|Vec3|ItemStack;
 
-	public constructor(type:MetadataFieldType, value:number|string) {
+	public constructor(type:MetadataFieldType, value:number|string|Vec3|ItemStack) {
 		this.type = type;
 		this.value = value;
 	}
@@ -38,6 +40,18 @@ export class MetadataWriter {
 					} else {
 						throw "Non-string value assigned to a String MetadataEntry";
 					}
+				case MetadataFieldType.Item:
+					if (entry.value instanceof ItemStack) {
+						size += 5;
+					} else {
+						throw "Non-ItemStack value assigned to an ItemStack MetadataEntry";
+					}
+				case MetadataFieldType.Vector:
+					if (entry.value instanceof Vec3) {
+						size += 12;
+					} else {
+						throw "Non-Vec3 value assigned to an Vec3 MetadataEntry";
+					}
 			}
 		})
 
@@ -59,6 +73,11 @@ export class MetadataWriter {
 					}
 				} else if (typeof(entry.value) === "string") {
 					writer.writeString16(entry.value);
+				} else if (entry.value instanceof ItemStack) {
+					writer.writeShort(entry.value.itemID).writeByte(entry.value.size).writeShort(entry.value.damage);
+				} else if (entry.value instanceof Vec3) {
+					const absVec = entry.value.toAbs();
+					writer.writeInt(absVec.x).writeInt(absVec.y).writeInt(absVec.z);
 				}
 			}
 		}
diff --git a/server/Vec3.ts b/server/Vec3.ts
index cc4eae2..74f172d 100644
--- a/server/Vec3.ts
+++ b/server/Vec3.ts
@@ -68,4 +68,8 @@ export default class Vec3 {
 			throw new Error(`Invalid arguments for Vec3.mult : ${typeof(x)}, ${typeof(y)}, ${typeof(z)}`);
 		}
 	}
+
+	toAbs() {
+		return new Vec3(Math.round(this.x * 32), Math.round(this.y * 32), Math.round(this.z * 32));
+	}
 }
\ No newline at end of file