GameMessage.SelectPlace support cancel

Assets/SibylSystem/Ocgcore/Ocgcore.cs

@@ -3484,8 +3484,12 @@ public class Ocgcore : ServantWithCardDescription
                 binaryMaster = new BinaryMaster();
                 player = r.ReadByte();
                 min = r.ReadByte();
-                //TODO: can cancel
-                if (min == 0) min = 1;
+                bool cancelable = false;
+                if (min == 0)
+                {
+                    cancelable = true;
+                    min = 1;
+                }
                 var _field = ~r.ReadUInt32();
                 if (Program.I().setting.setting.hand.value || Program.I().setting.setting.handm.value ||
                     currentMessage == GameMessage.SelectDisfield)
@@ -3581,6 +3585,10 @@ public class Ocgcore : ServantWithCardDescription
                         else
                             gameField.setHint(GameStringManager.get_unsafe(570));
                     }
+                    if (cancelable)
+                    {
+                        gameInfo.addHashedButton("cancelPlace", -1, superButtonType.no, InterString.Get("取消操作@ui"));
+                    }
                 }
                 else
                 {
@@ -7054,6 +7062,12 @@ public class Ocgcore : ServantWithCardDescription
             return;
         }
 
+        if (btn.hashString == "cancelPlace")
+        {
+            cancelSelectPlace();
+            return;
+        }
+
         switch (currentMessage)
         {
             case GameMessage.SelectBattleCmd:
@@ -7115,6 +7129,18 @@ public class Ocgcore : ServantWithCardDescription
         if (realized) realize(true);
     }
 
+    private void cancelSelectPlace()
+    {
+        clearAllSelectPlace();
+        BinaryMaster binaryMaster = new BinaryMaster();
+        byte[] resp = new byte[3];
+        resp[0] = (byte)localPlayer(0);
+        resp[1] = 0;
+        resp[2] = 0;
+        binaryMaster.writer.Write(resp);
+        sendReturn(binaryMaster.get());
+    }
+
     private void clearAllShowed()
     {
         for (var i = 0; i < cards.Count; i++)
@@ -7561,6 +7587,7 @@ public class Ocgcore : ServantWithCardDescription
             if (flagForTimeConfirm)
                 return;
         if (gameInfo.queryHashedButton("cancleSelected")) return;
+        if (gameInfo.queryHashedButton("cancelPlace")) return;
         rightExcited = true;
         //gameInfo.ignoreChain_set(true);
         base.ES_mouseDownRight();
@@ -7659,6 +7686,13 @@ public class Ocgcore : ServantWithCardDescription
             var binaryMaster = new BinaryMaster();
             binaryMaster.writer.Write(-1);
             sendReturn(binaryMaster.get());
+            return;
+        }
+
+        if (gameInfo.queryHashedButton("cancelPlace"))
+        {
+            cancelSelectPlace();
+            return;
         }
     }