From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Taiyou06 <kaandindar21@gmail.com>
Date: Fri, 8 Nov 2024 00:06:34 +0100
Subject: [PATCH] Lithium: cached iterate outwards

By: 2No2Name <2No2Name@web.de>
As part of: Lithium (https://github.com/CaffeineMC/lithium)
Licensed under: LGPL-3.0 (https://www.gnu.org/licenses/lgpl-3.0.html)

diff --git a/net/minecraft/core/BlockPos.java b/net/minecraft/core/BlockPos.java
index 6518d3fff6daf331b24a7bf5b39fa1920b73711d..596a62f4020e51c2bd5a63c145b7f0e500c4b0ed 100644
--- a/net/minecraft/core/BlockPos.java
+++ b/net/minecraft/core/BlockPos.java
@@ -347,7 +347,18 @@ public class BlockPos extends Vec3i {
         };
     }
 
+    // JettPack start - lithium: cached iterate outwards
+    private static final org.dreeam.leaf.util.cache.IterateOutwardsCache ITERATE_OUTWARDS_CACHE = new org.dreeam.leaf.util.cache.IterateOutwardsCache(50);
+    private static final it.unimi.dsi.fastutil.longs.LongList HOGLIN_PIGLIN_CACHE = ITERATE_OUTWARDS_CACHE.getOrCompute(8, 4, 8);
+    // JettPack end - lithium: cached iterate outwards
+
     public static Iterable<BlockPos> withinManhattan(BlockPos pos, int xSize, int ySize, int zSize) {
+        // JettPack start - lithium: cached iterate outwards
+        if (pos != org.dreeam.leaf.util.cache.IterateOutwardsCache.POS_ZERO) {
+            final it.unimi.dsi.fastutil.longs.LongList positions = xSize == 8 && ySize == 4 && zSize == 8 ? HOGLIN_PIGLIN_CACHE : ITERATE_OUTWARDS_CACHE.getOrCompute(xSize, ySize, zSize);
+            return new org.dreeam.leaf.util.cache.LongList2BlockPosMutableIterable(pos, positions);
+        }
+        // JettPack end - lithium: cached iterate outwards
         int i = xSize + ySize + zSize;
         int x1 = pos.getX();
         int y1 = pos.getY();