Paper/Spigot-Server-Patches/0184-API-to-get-a-BlockState-without-a-snapshot.patch

136 lines
5.3 KiB
Diff

From ae21a2ecfd6ab6db948e04a340c54fde01e7162d Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
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/server/TileEntity.java b/src/main/java/net/minecraft/server/TileEntity.java
index 630b279158..958279249f 100644
--- a/src/main/java/net/minecraft/server/TileEntity.java
+++ b/src/main/java/net/minecraft/server/TileEntity.java
@@ -231,7 +231,12 @@ public abstract class TileEntity implements KeyedObject { // Paper
}
// CraftBukkit start - add method
+ // Paper start
public InventoryHolder getOwner() {
+ return getOwner(true);
+ }
+ public InventoryHolder getOwner(boolean useSnapshot) {
+ // Paper end
if (world == null) return null;
// Spigot start
org.bukkit.block.Block block = world.getWorld().getBlockAt(position.getX(), position.getY(), position.getZ());
@@ -240,7 +245,7 @@ public abstract class TileEntity implements KeyedObject { // Paper
return null;
}
// Spigot end
- org.bukkit.block.BlockState state = block.getState();
+ 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 c0f557568d..fa840c3d38 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
@@ -309,6 +309,20 @@ public class CraftBlock implements Block {
@Override
public BlockState getState() {
+ // Paper start - allow disabling the use of snapshots
+ return getState(true);
+ }
+ public BlockState getState(boolean useSnapshot) {
+ boolean prev = CraftBlockEntityState.DISABLE_SNAPSHOT;
+ CraftBlockEntityState.DISABLE_SNAPSHOT = !useSnapshot;
+ try {
+ return getState0();
+ } finally {
+ CraftBlockEntityState.DISABLE_SNAPSHOT = prev;
+ }
+ }
+ public BlockState getState0() {
+ // Paper end
Material material = getType();
switch (material) {
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
index 17d80b5c6e..f6401e2cde 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
@@ -26,20 +26,40 @@ public class CraftBlockEntityState<T extends TileEntity> extends CraftBlockState
this.tileEntity = tileEntityClass.cast(world.getHandle().getTileEntity(this.getPosition()));
Preconditions.checkState(this.tileEntity != null, "Tile is null, asynchronous access? " + block);
+ // Paper start
+ this.snapshotDisabled = DISABLE_SNAPSHOT;
+ if (DISABLE_SNAPSHOT) {
+ this.snapshot = this.tileEntity;
+ } else {
+ this.snapshot = this.createSnapshot(this.tileEntity);
+ }
// copy tile entity data:
- this.snapshot = this.createSnapshot(tileEntity);
- this.load(snapshot);
+ if(this.snapshot != null) {
+ this.load(this.snapshot);
+ }
+ // Paper end
}
+ public final boolean snapshotDisabled; // Paper
+ public static boolean DISABLE_SNAPSHOT = false; // Paper
+
public CraftBlockEntityState(Material material, T tileEntity) {
super(material);
this.tileEntityClass = (Class<T>) tileEntity.getClass();
this.tileEntity = tileEntity;
-
+ // Paper start
+ this.snapshotDisabled = DISABLE_SNAPSHOT;
+ if (DISABLE_SNAPSHOT) {
+ this.snapshot = this.tileEntity;
+ } else {
+ this.snapshot = this.createSnapshot(this.tileEntity);
+ }
// copy tile entity data:
- this.snapshot = this.createSnapshot(tileEntity);
- this.load(snapshot);
+ if(this.snapshot != null) {
+ this.load(this.snapshot);
+ }
+ // Paper end
}
private T createSnapshot(T tileEntity) {
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
index 15022ada0c..af15656cc4 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
@@ -17,10 +17,12 @@ public class CraftSign extends CraftBlockEntityState<TileEntitySign> implements
public CraftSign(final Block block) {
super(block, TileEntitySign.class);
+ if (lines == null) { lines = new String[]{"", "", "", ""}; } // Paper
}
public CraftSign(final Material material, final TileEntitySign te) {
super(material, te);
+ if (lines == null) { lines = new String[]{"", "", "", ""}; } // Paper
}
@Override
--
2.24.1