DivineMC/divinemc-server/minecraft-patches/features/0053-Reduce-chunk-loading-lookups.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
Date: Wed, 11 Jun 2025 19:12:00 +0300
Subject: [PATCH] Reduce chunk loading & lookups

Original license: GPL v3
Original project: https://github.com/pufferfish-gg/Pufferfish

diff --git a/net/minecraft/world/entity/monster/EnderMan.java b/net/minecraft/world/entity/monster/EnderMan.java
index fcdb3ee493e65bf002e78862f00061336e731ede..a8c11c6d7d107987dc04e5b741cfabf5ea0e8090 100644
--- a/net/minecraft/world/entity/monster/EnderMan.java
+++ b/net/minecraft/world/entity/monster/EnderMan.java
@@ -330,11 +330,28 @@ public class EnderMan extends Monster implements NeutralMob {
     private boolean teleport(double x, double y, double z) {
         BlockPos.MutableBlockPos mutableBlockPos = new BlockPos.MutableBlockPos(x, y, z);
 
-        while (mutableBlockPos.getY() > this.level().getMinY() && !this.level().getBlockState(mutableBlockPos).blocksMotion()) {
-            mutableBlockPos.move(Direction.DOWN);
+        // DivineMC start - Reduce chunk loading & lookups
+        BlockState blockState;
+        if (org.bxteam.divinemc.config.DivineConfig.PerformanceCategory.reduceChuckLoadAndLookup) {
+            net.minecraft.world.level.chunk.LevelChunk chunk = this.level().getChunkIfLoaded(mutableBlockPos);
+            if (chunk == null) {
+                return false;
+            }
+
+            while (mutableBlockPos.getY() > this.level().getMinY() && !chunk.getBlockState(mutableBlockPos).blocksMotion()) {
+                mutableBlockPos.move(Direction.DOWN);
+            }
+
+            blockState = chunk.getBlockState(mutableBlockPos);
+        } else {
+            while (mutableBlockPos.getY() > this.level().getMinY() && !this.level().getBlockState(mutableBlockPos).blocksMotion()) {
+                mutableBlockPos.move(Direction.DOWN);
+            }
+
+            blockState = this.level().getBlockState(mutableBlockPos);
         }
+        // DivineMC end - Reduce chunk loading & lookups
 
-        BlockState blockState = this.level().getBlockState(mutableBlockPos);
         boolean flag = blockState.blocksMotion();
         boolean isWater = blockState.getFluidState().is(FluidTags.WATER);
         if (flag && !isWater) {