From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar Date: Mon, 6 Nov 2017 21:08:22 -0500 Subject: [PATCH] API to get a BlockState without a snapshot This allows you to get a BlockState without creating a snapshot, operating on the real tile entity. This is useful for where performance is needed also Avoid NPE during CraftBlockEntityState load if could not get TE If Tile Entity was null, correct Sign to return empty lines instead of null 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 1e416b23a38458f16add472cea09b0ac5ac91869..6f61fd8224fb4094f38a851300ab55f94523c252 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 @@ -45,6 +45,7 @@ public abstract class BlockEntity implements io.papermc.paper.util.KeyedObject { this.type = type; this.worldPosition = pos.immutable(); this.blockState = state; + this.persistentDataContainer = new CraftPersistentDataContainer(DATA_TYPE_REGISTRY); // Paper - always init } public static BlockPos getPosFromTag(CompoundTag nbt) { @@ -86,7 +87,7 @@ public abstract class BlockEntity implements io.papermc.paper.util.KeyedObject { // CraftBukkit start - read container public void load(CompoundTag nbt) { - this.persistentDataContainer = new CraftPersistentDataContainer(BlockEntity.DATA_TYPE_REGISTRY); + this.persistentDataContainer.clear(); // Paper - clear instead of init net.minecraft.nbt.Tag persistentDataTag = nbt.get("PublicBukkitValues"); if (persistentDataTag instanceof CompoundTag) { @@ -260,8 +261,15 @@ public abstract class BlockEntity implements io.papermc.paper.util.KeyedObject { // CraftBukkit start - add method public InventoryHolder getOwner() { + // Paper start + return getOwner(true); + } + public InventoryHolder getOwner(boolean useSnapshot) { + // Paper end if (this.level == null) return null; - org.bukkit.block.BlockState state = this.level.getWorld().getBlockAt(this.worldPosition.getX(), this.worldPosition.getY(), this.worldPosition.getZ()).getState(); + 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; + 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/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java index d8b9a8276204ad8a2f045af9fe94185dbf150bc6..3250559589eb4db7b3df828144cee81a19651842 100644 --- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java +++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java @@ -317,7 +317,20 @@ public class CraftBlock implements Block { @Override public BlockState getState() { + // Paper start + return this.getState(true); + } + + @Override + public BlockState getState(boolean useSnapshot) { + boolean prev = CraftBlockEntityState.DISABLE_SNAPSHOT; + CraftBlockEntityState.DISABLE_SNAPSHOT = !useSnapshot; + try { return CraftBlockStates.getBlockState(this); + } finally { + CraftBlockEntityState.DISABLE_SNAPSHOT = prev; + } + // Paper end } @Override diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java index 7629a51ec284cab0db7e9238027d6acfa4f3083c..27f38af1eb71dda5dd175dcabc7a467ed772757a 100644 --- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java +++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java @@ -6,19 +6,30 @@ import org.bukkit.World; import org.bukkit.block.TileState; import org.bukkit.persistence.PersistentDataContainer; -public class CraftBlockEntityState extends CraftBlockState implements TileState { +public abstract class CraftBlockEntityState extends CraftBlockState implements TileState { // Paper - revert revert private final T tileEntity; private final T snapshot; + public final boolean snapshotDisabled; // Paper + public static boolean DISABLE_SNAPSHOT = false; // Paper public CraftBlockEntityState(World world, T tileEntity) { super(world, tileEntity.getBlockPos(), tileEntity.getBlockState()); this.tileEntity = tileEntity; + // Paper start + this.snapshotDisabled = DISABLE_SNAPSHOT; + if (DISABLE_SNAPSHOT) { + this.snapshot = this.tileEntity; + } else { + this.snapshot = this.createSnapshot(tileEntity); + } // copy tile entity data: - this.snapshot = this.createSnapshot(tileEntity); - this.load(snapshot); + if (this.snapshot != null) { + this.load(this.snapshot); + } + // Paper end } public void refreshSnapshot() { diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java index 51ea68c433c4d530f8404d3174c5a121ce808a96..9d0934656bbd27df4b47b816540d02cfbfc80636 100644 --- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java +++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java @@ -105,12 +105,10 @@ public final class CraftBlockStates { private static final BlockStateFactory DEFAULT_FACTORY = new BlockStateFactory(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); - } - Preconditions.checkState(tileEntity == null, "Unexpected BlockState for %s", CraftMagicNumbers.getMaterial(blockData.getBlock())); + // Paper start - revert revert + // When a block is being destroyed, the TileEntity may temporarily still exist while the block's type has already been set to AIR. We ignore the TileEntity in this case. + Preconditions.checkState(tileEntity == null || CraftMagicNumbers.getMaterial(blockData.getBlock()) == Material.AIR, "Unexpected BlockState for %s", CraftMagicNumbers.getMaterial(blockData.getBlock())); + // Paper end return new CraftBlockState(world, blockPosition, blockData); } }; diff --git a/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java b/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java index 3fc3907172f12ee24ea70bd6a1ffbbc6084ed971..2c59f09a9261a1690951161fd856a5848d9885b7 100644 --- a/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java +++ b/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java @@ -156,4 +156,10 @@ public class CraftPersistentDataContainer implements PersistentDataContainer { public Map serialize() { return (Map) CraftNBTTagConfigSerializer.serialize(this.toTagCompound()); } + + // Paper start + public void clear() { + this.customDataTags.clear(); + } + // Paper end }