Fix hoppers incorrect update (#31)

patches/server/0068-Fix-hoppers-incorrect-update.patch

@@ -0,0 +1,40 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: violetc <[email protected]>
+Date: Fri, 2 Jun 2023 17:30:48 +0800
+Subject: [PATCH] Fix hoppers incorrect update
+
+
+diff --git a/src/main/java/net/minecraft/world/level/block/HopperBlock.java b/src/main/java/net/minecraft/world/level/block/HopperBlock.java
+index c8e7e82dd81d9faf8f06612291c40f541304eb82..f4e36bf88b1b6f044a1bb8f1785d57e52b6c8963 100644
+--- a/src/main/java/net/minecraft/world/level/block/HopperBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/HopperBlock.java
+@@ -123,7 +123,7 @@ public class HopperBlock extends BaseEntityBlock {
+     @Override
+     public void onPlace(BlockState state, Level world, BlockPos pos, BlockState oldState, boolean notify) {
+         if (!oldState.is(state.getBlock())) {
+-            this.checkPoweredState(world, pos, state, 2);
++            this.checkPoweredState(world, pos, state, 2, true); // Leaves - special check
+         }
+     }
+
+@@ -147,13 +147,18 @@ public class HopperBlock extends BaseEntityBlock {
+         this.checkPoweredState(world, pos, state, 4);
+     }
+
++    // Leaves start - special check
+     private void checkPoweredState(Level world, BlockPos pos, BlockState state, int flags) {
++        checkPoweredState(world, pos, state, flags, false);
++    }
++
++    private void checkPoweredState(Level world, BlockPos pos, BlockState state, int flags, boolean isPlace) {
+         boolean bl = !world.hasNeighborSignal(pos);
+         if (bl != state.getValue(ENABLED)) {
+-            world.setBlock(pos, state.setValue(ENABLED, Boolean.valueOf(bl)), flags);
++            world.setBlock(pos, state.setValue(ENABLED, Boolean.valueOf(bl)), flags, isPlace ? 0 : 512);
+         }
+-
+     }
++    // Leaves end - special check
+
+     @Override
+     public void onRemove(BlockState state, Level world, BlockPos pos, BlockState newState, boolean moved) {