Changed synchronization method for getAi.

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_C6_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -2243,12 +2243,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = new CreatureAI(new AIAccessor());
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = new CreatureAI(new AIAccessor());
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -2498,12 +2498,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -2500,12 +2500,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1741,12 +1741,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1741,12 +1741,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1741,12 +1741,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1742,12 +1742,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -1741,12 +1741,18 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 * Gets this creature's AI.
 	 * @return the AI
 	 */
-	public synchronized CreatureAI getAI()
+	public CreatureAI getAI()
 	{
 		CreatureAI ai = _ai;
 		if (ai == null)
 		{
-			_ai = ai = initAI();
+			synchronized (this)
+			{
+				if (_ai == null)
+				{
+					_ai = ai = initAI();
+				}
+			}
 		}
 		return ai;
 	}