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path: root/nms-patches/EntityShulker.patch
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--- a/net/minecraft/server/EntityShulker.java
+++ b/net/minecraft/server/EntityShulker.java
@@ -6,6 +6,10 @@
 import java.util.List;
 import java.util.UUID;
 import javax.annotation.Nullable;
+// CraftBukkit start
+import org.bukkit.Location;
+import org.bukkit.event.entity.EntityTeleportEvent;
+// CraftBukkit end
 
 public class EntityShulker extends EntityGolem implements IMonster {
 
@@ -112,7 +116,7 @@
 
             this.datawatcher.set(EntityShulker.b, Optional.of(new BlockPosition(i, j, k)));
         } else {
-            this.datawatcher.set(EntityShulker.b, Optional.absent());
+            this.datawatcher.set(EntityShulker.b, Optional.<BlockPosition>absent());
         }
 
     }
@@ -227,6 +231,7 @@
             this.locX = (double) blockposition.getX() + 0.5D;
             this.locY = (double) blockposition.getY();
             this.locZ = (double) blockposition.getZ() + 0.5D;
+            if (valid) world.entityJoinedWorld(this, false); // CraftBukkit
             this.lastX = this.locX;
             this.lastY = this.locY;
             this.lastZ = this.locZ;
@@ -331,8 +336,17 @@
                         EnumDirection enumdirection = aenumdirection[k];
 
                         if (this.world.d(blockposition1.shift(enumdirection), false)) {
-                            this.datawatcher.set(EntityShulker.a, enumdirection);
-                            flag = true;
+                            // CraftBukkit start
+                            EntityTeleportEvent teleport = new EntityTeleportEvent(this.getBukkitEntity(), this.getBukkitEntity().getLocation(), new Location(this.world.getWorld(), blockposition1.getX(), blockposition1.getY(), blockposition1.getZ()));
+                            this.world.getServer().getPluginManager().callEvent(teleport);
+                            if (!teleport.isCancelled()) {
+                                Location to = teleport.getTo();
+                                blockposition1 = new BlockPosition(to.getX(), to.getY(), to.getZ());
+
+                                this.datawatcher.set(EntityShulker.a, enumdirection);
+                                flag = true;
+                            }
+                            // CraftBukkit end
                             break;
                         }
                     }