Implement Arrow tile methods

nms-patches/EntityArrow.patch

@@ -14,6 +14,19 @@
  public abstract class EntityArrow extends Entity implements IProjectile {
  
      private static final Predicate<Entity> f = Predicates.and(new Predicate[] { IEntitySelector.e, IEntitySelector.a, new Predicate() {
+@@ -17,9 +24,9 @@
+         }
+     }});
+     private static final DataWatcherObject<Byte> g = DataWatcher.a(EntityArrow.class, DataWatcherRegistry.a);
+-    private int h;
+-    private int at;
+-    private int au;
++    public int h; // PAIL: private->public
++    public int at; // PAIL: private->public
++    public int au; // PAIL: private->public
+     private Block av;
+     private int aw;
+     public boolean inGround;
 @@ -50,6 +57,7 @@
      public EntityArrow(World world, EntityLiving entityliving) {
          this(world, entityliving.locX, entityliving.locY + (double) entityliving.getHeadHeight() - 0.10000000149011612D, entityliving.locZ);

src/main/java/org/bukkit/craftbukkit/entity/CraftArrow.java

@@ -4,6 +4,7 @@ import com.google.common.base.Preconditions;
 import net.minecraft.server.EntityArrow;
 
 import org.apache.commons.lang.Validate;
+import org.bukkit.block.Block;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.entity.Arrow;
 import org.bukkit.entity.EntityType;
@@ -46,6 +47,21 @@ public class CraftArrow extends AbstractProjectile implements Arrow {
         getHandle().projectileSource = shooter;
     }
 
+    @Override
+    public boolean isInBlock() {
+        return getHandle().inGround;
+    }
+
+    @Override
+    public Block getAttachedBlock() {
+        if (!isInBlock()) {
+            return null;
+        }
+
+        EntityArrow handle = getHandle();
+        return getWorld().getBlockAt(handle.h, handle.at, handle.au); // PAIL: rename tileX, tileY, tileZ
+    }
+
     @Override
     public PickupStatus getPickupStatus() {
         return PickupStatus.values()[getHandle().fromPlayer.ordinal()];