Paper/patches/server/0738-Fix-upstreams-block-state-factories.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 6 Oct 2021 20:50:48 -0700
Subject: [PATCH] Fix upstreams block state factories

Sometimes, blocks are changed and then logic is called before the associated
tile entity is removed. When this happens, the factories were relying on the
block at the position, not the tile entity. This change prioritizes using the
tile entity type to determine the block state factory and falls back on
the material type of the block at that location.

== AT ==
public net.minecraft.world.level.block.entity.BlockEntityType validBlocks

diff --git a/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java
index 5768ff2c3e15c038d132c7ad391332fb36251871..52a5b7c20dda9ad18cdeb70952e7385b0966b161 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java
@@ -248,7 +248,7 @@ public abstract class BlockEntity {
         // Paper end
         if (this.level == null) return null;
         org.bukkit.block.Block block = this.level.getWorld().getBlockAt(this.worldPosition.getX(), this.worldPosition.getY(), this.worldPosition.getZ());
-        if (block.getType() == org.bukkit.Material.AIR) return null;
+        // if (block.getType() == org.bukkit.Material.AIR) return null; // Paper - actually get the tile entity if it still exists
         org.bukkit.block.BlockState state = block.getState(useSnapshot); // Paper
         if (state instanceof InventoryHolder) return (InventoryHolder) state;
         return null;
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
index 87c25170fbe8b0591d452612496ee1a627138de7..a2894f02ceb7c58f6eafe055e1ff47b197b100f2 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
@@ -6,7 +6,7 @@ import org.bukkit.World;
 import org.bukkit.block.TileState;
 import org.bukkit.persistence.PersistentDataContainer;
 
-public class CraftBlockEntityState<T extends BlockEntity> extends CraftBlockState implements TileState {
+public abstract class CraftBlockEntityState<T extends BlockEntity> extends CraftBlockState implements TileState { // Paper - revert upstream's revert of the block state changes
 
     private final T tileEntity;
     private final T snapshot;
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java
index cf76ca2ebead64d194ce03ee024085d32d02077a..1caa329567b50a962c54bb00c79cc98e4f2724c8 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java
@@ -19,6 +19,7 @@ import net.minecraft.world.level.block.entity.BeehiveBlockEntity;
 import net.minecraft.world.level.block.entity.BellBlockEntity;
 import net.minecraft.world.level.block.entity.BlastFurnaceBlockEntity;
 import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.block.entity.BlockEntityType; // Paper
 import net.minecraft.world.level.block.entity.BrewingStandBlockEntity;
 import net.minecraft.world.level.block.entity.CampfireBlockEntity;
 import net.minecraft.world.level.block.entity.ChestBlockEntity;
@@ -112,223 +113,61 @@ public final class CraftBlockStates {
     private static final BlockStateFactory<?> DEFAULT_FACTORY = new BlockStateFactory<CraftBlockState>(CraftBlockState.class) {
         @Override
         public CraftBlockState createBlockState(World world, BlockPos blockPosition, net.minecraft.world.level.block.state.BlockState blockData, BlockEntity tileEntity) {
-            // SPIGOT-6754, SPIGOT-6817: Restore previous behaviour for tile entities with removed blocks (loot generation post-destroy)
-            if (tileEntity != null) {
-                // block with unhandled TileEntity:
-                return new CraftBlockEntityState<>(world, tileEntity);
-            }
+            // Paper - revert upstream's revert of the block state changes. Block entities that have already had the block type set to AIR are still valid, upstream decided to ignore them
             Preconditions.checkState(tileEntity == null, "Unexpected BlockState for %s", CraftMagicNumbers.getMaterial(blockData.getBlock()));
             return new CraftBlockState(world, blockPosition, blockData);
         }
     };
+    // Paper start
+    private static final Map<BlockEntityType<?>, BlockStateFactory<?>> FACTORIES_BY_BLOCK_ENTITY_TYPE = new HashMap<>();
+    private static void register(BlockEntityType<?> type, BlockStateFactory<?> factory) {
+        FACTORIES_BY_BLOCK_ENTITY_TYPE.put(type, factory);
+    }
+    // Paper end
 
     static {
-        register(
-                Arrays.asList(
-                        Material.ACACIA_SIGN,
-                        Material.ACACIA_WALL_SIGN,
-                        Material.BAMBOO_SIGN,
-                        Material.BAMBOO_WALL_SIGN,
-                        Material.BIRCH_SIGN,
-                        Material.BIRCH_WALL_SIGN,
-                        Material.CHERRY_SIGN,
-                        Material.CHERRY_WALL_SIGN,
-                        Material.CRIMSON_SIGN,
-                        Material.CRIMSON_WALL_SIGN,
-                        Material.DARK_OAK_SIGN,
-                        Material.DARK_OAK_WALL_SIGN,
-                        Material.JUNGLE_SIGN,
-                        Material.JUNGLE_WALL_SIGN,
-                        Material.MANGROVE_SIGN,
-                        Material.MANGROVE_WALL_SIGN,
-                        Material.OAK_SIGN,
-                        Material.OAK_WALL_SIGN,
-                        Material.SPRUCE_SIGN,
-                        Material.SPRUCE_WALL_SIGN,
-                        Material.WARPED_SIGN,
-                        Material.WARPED_WALL_SIGN
-                ), CraftSign.class, CraftSign::new, SignBlockEntity::new
-        );
-
-        register(
-                Arrays.asList(
-                        Material.ACACIA_HANGING_SIGN,
-                        Material.ACACIA_WALL_HANGING_SIGN,
-                        Material.BAMBOO_HANGING_SIGN,
-                        Material.BAMBOO_WALL_HANGING_SIGN,
-                        Material.BIRCH_HANGING_SIGN,
-                        Material.BIRCH_WALL_HANGING_SIGN,
-                        Material.CHERRY_HANGING_SIGN,
-                        Material.CHERRY_WALL_HANGING_SIGN,
-                        Material.CRIMSON_HANGING_SIGN,
-                        Material.CRIMSON_WALL_HANGING_SIGN,
-                        Material.DARK_OAK_HANGING_SIGN,
-                        Material.DARK_OAK_WALL_HANGING_SIGN,
-                        Material.JUNGLE_HANGING_SIGN,
-                        Material.JUNGLE_WALL_HANGING_SIGN,
-                        Material.MANGROVE_HANGING_SIGN,
-                        Material.MANGROVE_WALL_HANGING_SIGN,
-                        Material.OAK_HANGING_SIGN,
-                        Material.OAK_WALL_HANGING_SIGN,
-                        Material.SPRUCE_HANGING_SIGN,
-                        Material.SPRUCE_WALL_HANGING_SIGN,
-                        Material.WARPED_HANGING_SIGN,
-                        Material.WARPED_WALL_HANGING_SIGN
-                ), CraftHangingSign.class, CraftHangingSign::new, HangingSignBlockEntity::new
-        );
-
-        register(
-                Arrays.asList(
-                        Material.CREEPER_HEAD,
-                        Material.CREEPER_WALL_HEAD,
-                        Material.DRAGON_HEAD,
-                        Material.DRAGON_WALL_HEAD,
-                        Material.PIGLIN_HEAD,
-                        Material.PIGLIN_WALL_HEAD,
-                        Material.PLAYER_HEAD,
-                        Material.PLAYER_WALL_HEAD,
-                        Material.SKELETON_SKULL,
-                        Material.SKELETON_WALL_SKULL,
-                        Material.WITHER_SKELETON_SKULL,
-                        Material.WITHER_SKELETON_WALL_SKULL,
-                        Material.ZOMBIE_HEAD,
-                        Material.ZOMBIE_WALL_HEAD
-                ), CraftSkull.class, CraftSkull::new, SkullBlockEntity::new
-        );
-
-        register(
-                Arrays.asList(
-                        Material.COMMAND_BLOCK,
-                        Material.REPEATING_COMMAND_BLOCK,
-                        Material.CHAIN_COMMAND_BLOCK
-                ), CraftCommandBlock.class, CraftCommandBlock::new, CommandBlockEntity::new
-        );
-
-        register(
-                Arrays.asList(
-                        Material.BLACK_BANNER,
-                        Material.BLACK_WALL_BANNER,
-                        Material.BLUE_BANNER,
-                        Material.BLUE_WALL_BANNER,
-                        Material.BROWN_BANNER,
-                        Material.BROWN_WALL_BANNER,
-                        Material.CYAN_BANNER,
-                        Material.CYAN_WALL_BANNER,
-                        Material.GRAY_BANNER,
-                        Material.GRAY_WALL_BANNER,
-                        Material.GREEN_BANNER,
-                        Material.GREEN_WALL_BANNER,
-                        Material.LIGHT_BLUE_BANNER,
-                        Material.LIGHT_BLUE_WALL_BANNER,
-                        Material.LIGHT_GRAY_BANNER,
-                        Material.LIGHT_GRAY_WALL_BANNER,
-                        Material.LIME_BANNER,
-                        Material.LIME_WALL_BANNER,
-                        Material.MAGENTA_BANNER,
-                        Material.MAGENTA_WALL_BANNER,
-                        Material.ORANGE_BANNER,
-                        Material.ORANGE_WALL_BANNER,
-                        Material.PINK_BANNER,
-                        Material.PINK_WALL_BANNER,
-                        Material.PURPLE_BANNER,
-                        Material.PURPLE_WALL_BANNER,
-                        Material.RED_BANNER,
-                        Material.RED_WALL_BANNER,
-                        Material.WHITE_BANNER,
-                        Material.WHITE_WALL_BANNER,
-                        Material.YELLOW_BANNER,
-                        Material.YELLOW_WALL_BANNER
-                ), CraftBanner.class, CraftBanner::new, BannerBlockEntity::new
-        );
-
-        register(
-                Arrays.asList(
-                        Material.SHULKER_BOX,
-                        Material.WHITE_SHULKER_BOX,
-                        Material.ORANGE_SHULKER_BOX,
-                        Material.MAGENTA_SHULKER_BOX,
-                        Material.LIGHT_BLUE_SHULKER_BOX,
-                        Material.YELLOW_SHULKER_BOX,
-                        Material.LIME_SHULKER_BOX,
-                        Material.PINK_SHULKER_BOX,
-                        Material.GRAY_SHULKER_BOX,
-                        Material.LIGHT_GRAY_SHULKER_BOX,
-                        Material.CYAN_SHULKER_BOX,
-                        Material.PURPLE_SHULKER_BOX,
-                        Material.BLUE_SHULKER_BOX,
-                        Material.BROWN_SHULKER_BOX,
-                        Material.GREEN_SHULKER_BOX,
-                        Material.RED_SHULKER_BOX,
-                        Material.BLACK_SHULKER_BOX
-                ), CraftShulkerBox.class, CraftShulkerBox::new, ShulkerBoxBlockEntity::new
-        );
-
-        register(
-                Arrays.asList(
-                        Material.BLACK_BED,
-                        Material.BLUE_BED,
-                        Material.BROWN_BED,
-                        Material.CYAN_BED,
-                        Material.GRAY_BED,
-                        Material.GREEN_BED,
-                        Material.LIGHT_BLUE_BED,
-                        Material.LIGHT_GRAY_BED,
-                        Material.LIME_BED,
-                        Material.MAGENTA_BED,
-                        Material.ORANGE_BED,
-                        Material.PINK_BED,
-                        Material.PURPLE_BED,
-                        Material.RED_BED,
-                        Material.WHITE_BED,
-                        Material.YELLOW_BED
-                ), CraftBed.class, CraftBed::new, BedBlockEntity::new
-        );
-
-        register(
-                Arrays.asList(
-                        Material.BEEHIVE,
-                        Material.BEE_NEST
-                ), CraftBeehive.class, CraftBeehive::new, BeehiveBlockEntity::new
-        );
-
-        register(
-                Arrays.asList(
-                        Material.CAMPFIRE,
-                        Material.SOUL_CAMPFIRE
-                ), CraftCampfire.class, CraftCampfire::new, CampfireBlockEntity::new
-        );
-
-        register(Material.BARREL, CraftBarrel.class, CraftBarrel::new, BarrelBlockEntity::new);
-        register(Material.BEACON, CraftBeacon.class, CraftBeacon::new, BeaconBlockEntity::new);
-        register(Material.BELL, CraftBell.class, CraftBell::new, BellBlockEntity::new);
-        register(Material.BLAST_FURNACE, CraftBlastFurnace.class, CraftBlastFurnace::new, BlastFurnaceBlockEntity::new);
-        register(Material.BREWING_STAND, CraftBrewingStand.class, CraftBrewingStand::new, BrewingStandBlockEntity::new);
-        register(Material.CHEST, CraftChest.class, CraftChest::new, ChestBlockEntity::new);
-        register(Material.CHISELED_BOOKSHELF, CraftChiseledBookshelf.class, CraftChiseledBookshelf::new, ChiseledBookShelfBlockEntity::new);
-        register(Material.COMPARATOR, CraftComparator.class, CraftComparator::new, ComparatorBlockEntity::new);
-        register(Material.CONDUIT, CraftConduit.class, CraftConduit::new, ConduitBlockEntity::new);
-        register(Material.DAYLIGHT_DETECTOR, CraftDaylightDetector.class, CraftDaylightDetector::new, DaylightDetectorBlockEntity::new);
-        register(Material.DECORATED_POT, CraftDecoratedPot.class, CraftDecoratedPot::new, DecoratedPotBlockEntity::new);
-        register(Material.DISPENSER, CraftDispenser.class, CraftDispenser::new, DispenserBlockEntity::new);
-        register(Material.DROPPER, CraftDropper.class, CraftDropper::new, DropperBlockEntity::new);
-        register(Material.ENCHANTING_TABLE, CraftEnchantingTable.class, CraftEnchantingTable::new, EnchantmentTableBlockEntity::new);
-        register(Material.ENDER_CHEST, CraftEnderChest.class, CraftEnderChest::new, EnderChestBlockEntity::new);
-        register(Material.END_GATEWAY, CraftEndGateway.class, CraftEndGateway::new, TheEndGatewayBlockEntity::new);
-        register(Material.END_PORTAL, CraftEndPortal.class, CraftEndPortal::new, TheEndPortalBlockEntity::new);
-        register(Material.FURNACE, CraftFurnaceFurnace.class, CraftFurnaceFurnace::new, FurnaceBlockEntity::new);
-        register(Material.HOPPER, CraftHopper.class, CraftHopper::new, HopperBlockEntity::new);
-        register(Material.JIGSAW, CraftJigsaw.class, CraftJigsaw::new, JigsawBlockEntity::new);
-        register(Material.JUKEBOX, CraftJukebox.class, CraftJukebox::new, JukeboxBlockEntity::new);
-        register(Material.LECTERN, CraftLectern.class, CraftLectern::new, LecternBlockEntity::new);
-        register(Material.MOVING_PISTON, CraftMovingPiston.class, CraftMovingPiston::new, PistonMovingBlockEntity::new);
-        register(Material.SCULK_CATALYST, CraftSculkCatalyst.class, CraftSculkCatalyst::new, SculkCatalystBlockEntity::new);
-        register(Material.SCULK_SENSOR, CraftSculkSensor.class, CraftSculkSensor::new, SculkSensorBlockEntity::new);
-        register(Material.SCULK_SHRIEKER, CraftSculkShrieker.class, CraftSculkShrieker::new, SculkShriekerBlockEntity::new);
-        register(Material.SMOKER, CraftSmoker.class, CraftSmoker::new, SmokerBlockEntity::new);
-        register(Material.SPAWNER, CraftCreatureSpawner.class, CraftCreatureSpawner::new, SpawnerBlockEntity::new);
-        register(Material.STRUCTURE_BLOCK, CraftStructureBlock.class, CraftStructureBlock::new, StructureBlockEntity::new);
-        register(Material.SUSPICIOUS_SAND, CraftSuspiciousSand.class, CraftSuspiciousSand::new, SuspiciousSandBlockEntity::new);
-        register(Material.TRAPPED_CHEST, CraftChest.class, CraftChest::new, TrappedChestBlockEntity::new);
+        // Paper start - simplify
+        register(BlockEntityType.SIGN, CraftSign.class, CraftSign::new);
+        register(BlockEntityType.HANGING_SIGN, CraftHangingSign.class, CraftHangingSign::new);
+        register(BlockEntityType.SKULL, CraftSkull.class, CraftSkull::new);
+        register(BlockEntityType.COMMAND_BLOCK, CraftCommandBlock.class, CraftCommandBlock::new);
+        register(BlockEntityType.BANNER, CraftBanner.class, CraftBanner::new);
+        register(BlockEntityType.SHULKER_BOX, CraftShulkerBox.class, CraftShulkerBox::new);
+        register(BlockEntityType.BED, CraftBed.class, CraftBed::new);
+        register(BlockEntityType.BEEHIVE, CraftBeehive.class, CraftBeehive::new);
+        register(BlockEntityType.CAMPFIRE, CraftCampfire.class, CraftCampfire::new);
+        register(BlockEntityType.BARREL, CraftBarrel.class, CraftBarrel::new);
+        register(BlockEntityType.BEACON, CraftBeacon.class, CraftBeacon::new);
+        register(BlockEntityType.BELL, CraftBell.class, CraftBell::new);
+        register(BlockEntityType.BLAST_FURNACE, CraftBlastFurnace.class, CraftBlastFurnace::new);
+        register(BlockEntityType.BREWING_STAND, CraftBrewingStand.class, CraftBrewingStand::new);
+        register(BlockEntityType.CHEST, CraftChest.class, CraftChest::new);
+        register(BlockEntityType.CHISELED_BOOKSHELF, CraftChiseledBookshelf.class, CraftChiseledBookshelf::new);
+        register(BlockEntityType.COMPARATOR, CraftComparator.class, CraftComparator::new);
+        register(BlockEntityType.CONDUIT, CraftConduit.class, CraftConduit::new);
+        register(BlockEntityType.DAYLIGHT_DETECTOR, CraftDaylightDetector.class, CraftDaylightDetector::new);
+        register(BlockEntityType.DECORATED_POT, CraftDecoratedPot.class, CraftDecoratedPot::new);
+        register(BlockEntityType.DISPENSER, CraftDispenser.class, CraftDispenser::new);
+        register(BlockEntityType.DROPPER, CraftDropper.class, CraftDropper::new);
+        register(BlockEntityType.ENCHANTING_TABLE, CraftEnchantingTable.class, CraftEnchantingTable::new);
+        register(BlockEntityType.ENDER_CHEST, CraftEnderChest.class, CraftEnderChest::new);
+        register(BlockEntityType.END_GATEWAY, CraftEndGateway.class, CraftEndGateway::new);
+        register(BlockEntityType.END_PORTAL, CraftEndPortal.class, CraftEndPortal::new);
+        register(BlockEntityType.FURNACE, CraftFurnaceFurnace.class, CraftFurnaceFurnace::new);
+        register(BlockEntityType.HOPPER, CraftHopper.class, CraftHopper::new);
+        register(BlockEntityType.JIGSAW, CraftJigsaw.class, CraftJigsaw::new);
+        register(BlockEntityType.JUKEBOX, CraftJukebox.class, CraftJukebox::new);
+        register(BlockEntityType.LECTERN, CraftLectern.class, CraftLectern::new);
+        register(BlockEntityType.PISTON, CraftMovingPiston.class, CraftMovingPiston::new);
+        register(BlockEntityType.SCULK_CATALYST, CraftSculkCatalyst.class, CraftSculkCatalyst::new);
+        register(BlockEntityType.SCULK_SENSOR, CraftSculkSensor.class, CraftSculkSensor::new);
+        register(BlockEntityType.SCULK_SHRIEKER, CraftSculkShrieker.class, CraftSculkShrieker::new);
+        register(BlockEntityType.SMOKER, CraftSmoker.class, CraftSmoker::new);
+        register(BlockEntityType.MOB_SPAWNER, CraftCreatureSpawner.class, CraftCreatureSpawner::new);
+        register(BlockEntityType.STRUCTURE_BLOCK, CraftStructureBlock.class, CraftStructureBlock::new);
+        register(BlockEntityType.SUSPICIOUS_SAND, CraftSuspiciousSand.class, CraftSuspiciousSand::new);
+        register(BlockEntityType.TRAPPED_CHEST, CraftChest.class, CraftChest::new);
+        // Paper end
     }
 
     private static void register(Material blockType, BlockStateFactory<?> factory) {
@@ -336,30 +175,33 @@ public final class CraftBlockStates {
     }
 
     private static <T extends BlockEntity, B extends CraftBlockEntityState<T>> void register(
-            Material blockType,
+            net.minecraft.world.level.block.entity.BlockEntityType<? extends T> blockEntityType, // Paper
             Class<B> blockStateType,
-            BiFunction<World, T, B> blockStateConstructor,
-            BiFunction<BlockPos, net.minecraft.world.level.block.state.BlockState, T> tileEntityConstructor
+            BiFunction<World, T, B> blockStateConstructor // Paper
     ) {
-        CraftBlockStates.register(Collections.singletonList(blockType), blockStateType, blockStateConstructor, tileEntityConstructor);
-    }
-
-    private static <T extends BlockEntity, B extends CraftBlockEntityState<T>> void register(
-            List<Material> blockTypes,
-            Class<B> blockStateType,
-            BiFunction<World, T, B> blockStateConstructor,
-            BiFunction<BlockPos, net.minecraft.world.level.block.state.BlockState, T> tileEntityConstructor
-    ) {
-        BlockStateFactory<B> factory = new BlockEntityStateFactory<>(blockStateType, blockStateConstructor, tileEntityConstructor);
-        for (Material blockType : blockTypes) {
-            CraftBlockStates.register(blockType, factory);
+        // Paper start
+        BlockStateFactory<B> factory = new BlockEntityStateFactory<>(blockStateType, blockStateConstructor, blockEntityType::create);
+        for (net.minecraft.world.level.block.Block block : blockEntityType.validBlocks) {
+            CraftBlockStates.register(CraftMagicNumbers.getMaterial(block), factory);
         }
+        CraftBlockStates.register(blockEntityType, factory);
+        // Paper end
     }
 
     private static BlockStateFactory<?> getFactory(Material material) {
         return CraftBlockStates.FACTORIES.getOrDefault(material, DEFAULT_FACTORY);
     }
 
+    // Paper start
+    private static BlockStateFactory<?> getFactory(Material material, BlockEntityType<?> type) {
+        if (type != null) {
+            return CraftBlockStates.FACTORIES_BY_BLOCK_ENTITY_TYPE.getOrDefault(type, getFactory(material));
+        } else {
+            return getFactory(material);
+        }
+    }
+    // Paper end
+
     public static Class<? extends CraftBlockState> getBlockStateType(Material material) {
         Preconditions.checkNotNull(material, "material is null");
         return CraftBlockStates.getFactory(material).blockStateType;
@@ -375,6 +217,13 @@ public final class CraftBlockStates {
         return null;
     }
 
+    // Paper start
+    public static Class<? extends CraftBlockState> getBlockStateType(BlockEntityType<?> blockEntityType) {
+        Preconditions.checkNotNull(blockEntityType, "blockEntityType is null");
+        return CraftBlockStates.getFactory(null, blockEntityType).blockStateType;
+    }
+    // Paper end
+
     public static BlockState getBlockState(Block block) {
         // Paper start
         return CraftBlockStates.getBlockState(block, true);
@@ -432,7 +281,7 @@ public final class CraftBlockStates {
         if (world != null && tileEntity == null && CraftBlockStates.isTileEntityOptional(material)) {
             factory = CraftBlockStates.DEFAULT_FACTORY;
         } else {
-            factory = CraftBlockStates.getFactory(material);
+            factory = CraftBlockStates.getFactory(material, tileEntity != null ? tileEntity.getType() : null); // Paper
         }
         return factory.createBlockState(world, blockPosition, blockData, tileEntity);
     }
diff --git a/src/test/java/org/bukkit/craftbukkit/block/BlockStateTest.java b/src/test/java/org/bukkit/craftbukkit/block/BlockStateTest.java
index a6dbd1919bce5b5092666372f4cc31d2e2190c42..04710abbfb50eaa6e3e4d96fca5f0355f940a452 100644
--- a/src/test/java/org/bukkit/craftbukkit/block/BlockStateTest.java
+++ b/src/test/java/org/bukkit/craftbukkit/block/BlockStateTest.java
@@ -45,4 +45,11 @@ public class BlockStateTest extends AbstractTestingBase {
             }
         }
     }
+
+    @Test
+    public void testBlockEntityTypes() {
+        for (var blockEntityType : BuiltInRegistries.BLOCK_ENTITY_TYPE) {
+            org.junit.Assert.assertNotNull(CraftBlockStates.getBlockStateType(blockEntityType));
+        }
+    }
 }