From c0bc7b5ecd1e86d1473fd55f59628ffbaef638a6 Mon Sep 17 00:00:00 2001
From: Leijurv <leijurv@gmail.com>
Date: Sat, 1 Sep 2018 12:26:55 -0700
Subject: [PATCH] fix strange issue when exiting and entering the same world

---
 src/main/java/baritone/api/event/GameEventHandler.java | 3 +++
 src/main/java/baritone/utils/BlockStateInterface.java  | 6 +++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main/java/baritone/api/event/GameEventHandler.java b/src/main/java/baritone/api/event/GameEventHandler.java
index 88cd0560..45e86885 100644
--- a/src/main/java/baritone/api/event/GameEventHandler.java
+++ b/src/main/java/baritone/api/event/GameEventHandler.java
@@ -39,6 +39,7 @@ import baritone.api.event.events.*;
 import baritone.api.event.events.type.EventState;
 import baritone.api.event.listener.IGameEventListener;
 import baritone.chunk.WorldProvider;
+import baritone.utils.BlockStateInterface;
 import baritone.utils.Helper;
 import baritone.utils.InputOverrideHandler;
 import baritone.utils.interfaces.Toggleable;
@@ -133,6 +134,8 @@ public final class GameEventHandler implements IGameEventListener, Helper {
     public final void onWorldEvent(WorldEvent event) {
         WorldProvider cache = WorldProvider.INSTANCE;
 
+        BlockStateInterface.clearCachedChunk();
+
         switch (event.getState()) {
             case PRE:
                 break;
diff --git a/src/main/java/baritone/utils/BlockStateInterface.java b/src/main/java/baritone/utils/BlockStateInterface.java
index f21ddc50..cd3ca646 100644
--- a/src/main/java/baritone/utils/BlockStateInterface.java
+++ b/src/main/java/baritone/utils/BlockStateInterface.java
@@ -31,7 +31,7 @@ import net.minecraft.world.chunk.Chunk;
 public class BlockStateInterface implements Helper {
 
     private static Chunk prev = null;
-    
+
     public static IBlockState get(BlockPos pos) { // wrappers for chunk caching capability
 
         // Invalid vertical position
@@ -66,6 +66,10 @@ public class BlockStateInterface implements Helper {
         return Blocks.AIR.getDefaultState();
     }
 
+    public static void clearCachedChunk() {
+        prev = null;
+    }
+
     public static Block getBlock(BlockPos pos) {
         return get(pos).getBlock();
     }