add Executor.OnDraw

Game/AI/Executor.cs

@@ -97,6 +97,11 @@ namespace WindBot.Game.AI
         {
             // Some AI need do something on new turn
         }
+		
+        public virtual void OnDraw(int player)
+        {
+            // Some AI need do something on draw
+        }
 
         public virtual IList<ClientCard> OnSelectCard(IList<ClientCard> cards, int min, int max, int hint, bool cancelable)
         {

Game/GameAI.cs

@@ -70,6 +70,14 @@ namespace WindBot.Game
             return Executor.OnSelectHand();
         }
 
+        /// <summary>
+        /// Called when any player draw card.
+        /// </summary>
+        public void OnDraw(int player)
+        {
+            Executor.OnDraw(player);
+        }
+
         /// <summary>
         /// Called when it's a new turn.
         /// </summary>

Game/GameBehavior.cs

@@ -360,6 +360,7 @@ namespace WindBot.Game
                 _duel.Fields[player].Deck.RemoveAt(_duel.Fields[player].Deck.Count - 1);
                 _duel.Fields[player].Hand.Add(new ClientCard(0, CardLocation.Hand));
             }
+            _ai.OnDraw(player);
         }
 
         private void OnShuffleDeck(BinaryReader packet)