From f85b94a3c719ead513133dfa1f9d26e8f167a979 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 10 Mar 2018 16:33:15 -0500
Subject: [PATCH] Prevent Frosted Ice from loading/holding chunks


diff --git a/src/main/java/net/minecraft/server/BlockIceFrost.java b/src/main/java/net/minecraft/server/BlockIceFrost.java
index a8dbbf20a..87f40bfcf 100644
--- a/src/main/java/net/minecraft/server/BlockIceFrost.java
+++ b/src/main/java/net/minecraft/server/BlockIceFrost.java
@@ -50,7 +50,9 @@ public class BlockIceFrost extends BlockIce {
         for (int k = 0; k < j; ++k) {
             EnumDirection enumdirection = aenumdirection[k];
 
-            if (world.getType(blockposition.shift(enumdirection)).getBlock() == this) {
+            IBlockData iblockdata1 = world.getTypeIfLoaded(blockposition.shift(enumdirection)); // Paper - don't load chunks
+            if (iblockdata1 == null) continue; // Paper
+            if (iblockdata1.getBlock() == this) { // Paper
                 ++i;
                 if (i >= 4) {
                     return i;
@@ -76,7 +78,8 @@ public class BlockIceFrost extends BlockIce {
                 for (int k = 0; k < j; ++k) {
                     EnumDirection enumdirection = aenumdirection[k];
                     BlockPosition blockposition1 = blockposition.shift(enumdirection);
-                    IBlockData iblockdata1 = world.getType(blockposition1);
+                    IBlockData iblockdata1 = world.getTypeIfLoaded(blockposition1); // Paper - don't load chunks
+                    if (iblockdata1 == null) continue; // Paper
 
                     if (iblockdata1.getBlock() == this) {
                         this.a(world, blockposition1, iblockdata1, random, false);
-- 
2.18.0