Paper/patches/server/0831-Fix-tripwire-state-inconsistency.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <jahnke.nassim@gmail.com>
Date: Sun, 19 Dec 2021 21:11:20 +0100
Subject: [PATCH] Fix tripwire state inconsistency


diff --git a/src/main/java/net/minecraft/world/level/block/TripWireBlock.java b/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
index 6b40bf94fbaa18605b59b92ad1582e8dc3a6a9cd..335129abd06086d128f803bb488672b35f357389 100644
--- a/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
@@ -74,7 +74,7 @@ public class TripWireBlock extends Block {
     @Override
     public void onRemove(BlockState state, Level world, BlockPos pos, BlockState newState, boolean moved) {
         if (!moved && !state.is(newState.getBlock())) {
-            this.updateSource(world, pos, (BlockState) state.setValue(TripWireBlock.POWERED, true));
+            this.updateSource(world, pos, (BlockState) state.setValue(TripWireBlock.POWERED, true), true); // Paper - fix state inconsistency
         }
     }
 
@@ -89,6 +89,12 @@ public class TripWireBlock extends Block {
     }
 
     private void updateSource(Level world, BlockPos pos, BlockState state) {
+        // Paper start - fix state inconsistency
+        this.updateSource(world, pos, state, false);
+    }
+
+    private void updateSource(Level world, BlockPos pos, BlockState state, boolean beingRemoved) {
+        // Paper end
         Direction[] aenumdirection = new Direction[]{Direction.SOUTH, Direction.WEST};
         int i = aenumdirection.length;
         int j = 0;
@@ -104,7 +110,11 @@ public class TripWireBlock extends Block {
 
                     if (iblockdata1.is((Block) this.hook)) {
                         if (iblockdata1.getValue(TripWireHookBlock.FACING) == enumdirection.getOpposite()) {
-                            this.hook.calculateState(world, blockposition1, iblockdata1, false, true, k, state);
+                            // Paper - fix state inconsistency
+                            final int distance = beingRemoved ? -1 : k;
+                            final BlockState self = beingRemoved ? null : state;
+                            this.hook.calculateState(world, blockposition1, iblockdata1, false, true, distance, self);
+                            // Paper end
                         }
                     } else if (iblockdata1.is((Block) this)) {
                         ++k;