Paper/patches/server/0990-Don-t-tick-signs.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Wed, 12 Jul 2023 17:38:26 -0400
Subject: [PATCH] Don't tick signs

Minecraft now ticks signs in order to validate the playerWhoMayEdit field. This is a horrible idea, as this means that even waxed signs are ticked for essentially no reason. This moves the logic lazily onto the getter.

== AT ==
private net.minecraft.world.level.block.entity.SignBlockEntity playerWhoMayEdit

diff --git a/src/main/java/net/minecraft/world/level/block/CeilingHangingSignBlock.java b/src/main/java/net/minecraft/world/level/block/CeilingHangingSignBlock.java
index 6c9d163b9f857806461dc72e54713f1a4f3a5c31..0bd8ea3143b2e9755d492af4596622d1dca1afaf 100644
--- a/src/main/java/net/minecraft/world/level/block/CeilingHangingSignBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/CeilingHangingSignBlock.java
@@ -144,6 +144,6 @@ public class CeilingHangingSignBlock extends SignBlock {
     @Nullable
     @Override
     public <T extends BlockEntity> BlockEntityTicker<T> getTicker(Level world, BlockState state, BlockEntityType<T> type) {
-        return createTickerHelper(type, BlockEntityType.HANGING_SIGN, SignBlockEntity::tick);
+        return null; // Paper
     }
 }
diff --git a/src/main/java/net/minecraft/world/level/block/SignBlock.java b/src/main/java/net/minecraft/world/level/block/SignBlock.java
index b01cdfe3c62c609e953aa5007e6557cfec0d5a5f..1122090792e9ee98bf8498e8907c5abbbcbcd6d6 100644
--- a/src/main/java/net/minecraft/world/level/block/SignBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/SignBlock.java
@@ -203,6 +203,6 @@ public abstract class SignBlock extends BaseEntityBlock implements SimpleWaterlo
     @Nullable
     @Override
     public <T extends BlockEntity> BlockEntityTicker<T> getTicker(Level world, BlockState state, BlockEntityType<T> type) {
-        return createTickerHelper(type, BlockEntityType.SIGN, SignBlockEntity::tick);
+        return null; // Paper
     }
 }
diff --git a/src/main/java/net/minecraft/world/level/block/WallHangingSignBlock.java b/src/main/java/net/minecraft/world/level/block/WallHangingSignBlock.java
index d818d3ea6d28aa6ffb62127d4efd585d6f2935d1..ae232311f12c72ff62d3d18f25e3ebf46ce1ace2 100644
--- a/src/main/java/net/minecraft/world/level/block/WallHangingSignBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/WallHangingSignBlock.java
@@ -167,6 +167,6 @@ public class WallHangingSignBlock extends SignBlock {
     @Nullable
     @Override
     public <T extends BlockEntity> BlockEntityTicker<T> getTicker(Level world, BlockState state, BlockEntityType<T> type) {
-        return createTickerHelper(type, BlockEntityType.HANGING_SIGN, SignBlockEntity::tick);
+        return null; // Paper
     }
 }
diff --git a/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
index 9eea2982e92e9bc7a53962dc6b21de60f9e5a4c7..38cde466714e5663cd416b6afd5d2558e139ec09 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/SignBlockEntity.java
@@ -367,6 +367,12 @@ public class SignBlockEntity extends BlockEntity implements CommandSource { // C
 
     @Nullable
     public UUID getPlayerWhoMayEdit() {
+        // Paper start
+        if (this.hasLevel() && this.playerWhoMayEdit != null) {
+            // Manually invalidate the value lazily.
+            this.clearInvalidPlayerWhoMayEdit(this, this.getLevel(), this.playerWhoMayEdit);
+        }
+        // Paper end
         return this.playerWhoMayEdit;
     }