Fix Randar exploit

Author: ruViolence

patches/server/0153-fix-randar-exploit.patch

@@ -0,0 +1,34 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: ruViolence <78062896+ruViolence@users.noreply.github.com>
+Date: Sat, 20 Apr 2024 19:46:52 +0800
+Subject: [PATCH] fix: randar exploit
+
+https://github.com/spawnmason/randar-explanation
+
+diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
+index 37381407f8b3c76aa72eb8e29bf4adc45dc97734..99774b0a68932e09e31974448979125e00bc7862 100644
+--- a/src/main/java/net/minecraft/server/World.java
++++ b/src/main/java/net/minecraft/server/World.java
+@@ -88,6 +88,7 @@ public abstract class World implements IBlockAccess {
+     protected float q;
+     private int M;
+     public final Random random = new Random();
++    private final Random worldGenRandom = new Random(); // Reaper - Fix Randar
+     public WorldProvider worldProvider;
+     protected NavigationListener t = new NavigationListener();
+     protected List<IWorldAccess> u;
+@@ -3334,8 +3335,14 @@ public abstract class World implements IBlockAccess {
+     public Random a(int i, int j, int k) {
+         long l = (long) i * 341873128712L + (long) j * 132897987541L + this.getWorldData().getSeed() + (long) k;
+ 
++        // Reaper start - Fix Randar
++        if (false) {
+         this.random.setSeed(l);
+         return this.random;
++        }
++        this.worldGenRandom.setSeed(l);
++        return this.worldGenRandom;
++        // Reaper end - Fix Randar
+     }
+ 
+     public CrashReportSystemDetails a(CrashReport crashreport) {