fpchess: AI playing actually works now =D

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@1874 8e941d3f-bd1b-0410-a28a-d453659cc2b4

applications/fpchess/chessgame.pas

@@ -261,6 +261,9 @@ begin
 
   // Change player
   IsWhitePlayerTurn := not IsWhitePlayerTurn;
+
+  // Notify of the move
+  if Assigned(OnMove) then OnMove(AFrom, ATo);
 end;
 
 { Really moves the piece without doing any check }
@@ -273,9 +276,6 @@ begin
   // If Enpassant, clear the remaining pawn
   if AEnpassantToClear.X <> -1 then
     Board[AEnpassantToClear.X][AEnpassantToClear.Y] := ctEmpty;
-
-  // Notify of the move
-  if Assigned(OnMove) then OnMove(AFrom, ATo);
 end;
 
 procedure TChessGame.DoCastle();

applications/fpchess/engines/kcchess/MOVES.PAS

@@ -304,7 +304,11 @@
     var Row: RowColType;
         Attacked, _Protected : integer;
 
-    begin
+  begin
+    {$ifdef KCCHESS_VERBOSE}
+    //WriteLn(Format('[Moves.pas.MakeMove] Movement.PieceTaken.image=%d', [Integer(Movement.PieceTaken.image)]));
+    {$endif}
+
       Score := 0;
       {*** update board for most moves ***}
       with Movement do begin

applications/fpchess/engines/kcchess/PLAY.PAS

@@ -59,6 +59,10 @@
         Attacked, _Protected: integer;
         NoMoves, TakingPiece: boolean;
     begin
+      {$ifdef KCCHESS_VERBOSE}
+      //WriteLn('[Play.pas.GetComputerMove.Search]');
+      {$endif}
+
       {*** get the player's move list ***}
       GenMoveList (Turn, MoveList);
       NoMoves := true;
@@ -287,6 +291,9 @@
 
 {----------------------------------------------------------------------------}
     begin {GetComputerMove}
+      {$ifdef KCCHESS_VERBOSE}
+      WriteLn('[Play.pas.GetComputerMove]');
+      {$endif}
       {*** initialize ***}
       PosEvalOn := Player[Turn].PosEval;
       MaxDepth := Player[Turn].LookAhead;
@@ -321,9 +328,15 @@
       end;
       {$endif}
 
+      {$ifdef KCCHESS_VERBOSE}
+      WriteLn(Format('[Play.pas.GetComputerMove] MaxDepth=%d Loop i=%d', [MaxDepth, i]));
+      {$endif}
       {*** check each possible move - same method as in Search ***}
       while (i > 0) do
       begin
+          {$ifdef KCCHESS_VERBOSE}
+          WriteLn(Format('[Play.pas.GetComputerMove] Loop i=%d MoveList.NumMoves=%d', [i, MoveList.NumMoves]));
+          {$endif}
           {$ifdef FPCHESS_DISPLAY_ON}
           UpDateTime (Turn);  {*** player's elapsed time ***}
           {$endif}

applications/fpchess/engines/kcchess/mod_kcchess.pas

@@ -1,3 +1,8 @@
+{
+  Chess Engine licensed under public domain obtained from:
+
+  http://www.csbruce.com/~csbruce/chess/
+}
 unit mod_kcchess;
 
 {$mode objfpc}
@@ -172,6 +177,8 @@ procedure GetComputerMove (Turn : PieceColorType; Display : boolean;
 
 implementation
 
+{$define KCCHESS_VERBOSE}
+
 {*** include files ***}
 
 //{$I MISC.PAS}     {*** miscellaneous functions ***}
@@ -271,6 +278,10 @@ var
   Escape: boolean;
   Score: Integer;
 begin
+  // If we are getting notified by a computer move, exit immediately
+  if IsMovingAllowedNow() then Exit;
+
+  // initialization
   Escape := False;
   Score := 0;
 
@@ -296,10 +307,9 @@ begin
 
   { And write it to our board }
 
-  vChessGame.DoMovePiece(
+  vChessGame.MovePiece(
-    Point(UserMovement.FromRow, UserMovement.FromCol),
+    Point(AIMovement.FromCol, AIMovement.FromRow),
-    Point(UserMovement.ToRow, UserMovement.ToCol),
+    Point(AIMovement.ToCol, AIMovement.ToRow));
-    Point(-1, -1));
 end;
 
 initialization