Paper/Spigot-Server-Patches/0219-API-to-get-a-BlockState-without-a-snapshot.patch

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From cf1e2c6930915e0804226f7e3d6e067bfcb43b33 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 b3c5766a2..29fe031d8 100644
--- a/src/main/java/net/minecraft/server/TileEntity.java
+++ b/src/main/java/net/minecraft/server/TileEntity.java
@@ -206,7 +206,12 @@ 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());
@@ -215,7 +220,7 @@ 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 922266441..96e188b3a 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
2018-08-03 07:04:28 +02:00
@@ -267,6 +267,20 @@ public class CraftBlock implements Block {
}
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 0558cafe3..d4d9c5fc5 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
@@ -23,20 +23,40 @@ public class CraftBlockEntityState<T extends TileEntity> extends CraftBlockState
CraftWorld world = (CraftWorld) this.getWorld();
this.tileEntity = tileEntityClass.cast(world.getTileEntityAt(this.getX(), this.getY(), this.getZ()));
+ // Paper start
+ this.snapshotDisabled = DISABLE_SNAPSHOT;
+ if (DISABLE_SNAPSHOT) {
+ this.snapshot = this.tileEntity;
+ } else {
+ this.snapshot = this.createSnapshot(this.tileEntity, world.getHandle());
+ }
// copy tile entity data:
- this.snapshot = this.createSnapshot(tileEntity, world.getHandle());
- 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, null);
+ }
// copy tile entity data:
- this.snapshot = this.createSnapshot(tileEntity, null);
- this.load(snapshot);
+ if(this.snapshot != null) {
+ this.load(this.snapshot);
+ }
+ // Paper end
}
private T createSnapshot(T tileEntity, World world) {
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
index e6f86cc4b..3a8f64360 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
@@ -15,10 +15,12 @@ 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
--
2.19.0