Also do selective redraw with showTargetSquares on

[xboard.git] / board.c

diff --git a/board.c b/board.c
index 676ea0b..a725895 100644 (file)
--- a/board.c
+++ b/board.c
@@ -883,6 +883,7 @@ DrawPosition (int repaint, Board board)
     static int lastFlipView = 0;
     static int lastBoardValid[2] = {0, 0};
     static Board lastBoard[2];
+    static char lastMarker[BOARD_RANKS][BOARD_FILES];
     Arg args[16];
     int rrow, rcol;
     int nr = twoBoards*partnerUp;
@@ -928,7 +929,7 @@ DrawPosition (int repaint, Board board)
           is flashing on its new square */
        for (i = 0; i < BOARD_HEIGHT; i++)
          for (j = 0; j < BOARD_WIDTH; j++)
-           if ((board[i][j] != lastBoard[nr][i][j] && board[i][j] == EmptySquare)
+           if (((board[i][j] != lastBoard[nr][i][j] || !nr && marker[i][j] != lastMarker[i][j]) && board[i][j] == EmptySquare)
                || damage[nr][i][j]) {
                DrawSquare(i, j, board[i][j], 0);
                damage[nr][i][j] = False;
@@ -937,7 +938,7 @@ DrawPosition (int repaint, Board board)
        /* Second pass -- Draw piece(s) in new position and flash them */
        for (i = 0; i < BOARD_HEIGHT; i++)
          for (j = 0; j < BOARD_WIDTH; j++)
-           if (board[i][j] != lastBoard[nr][i][j]) {
+           if (board[i][j] != lastBoard[nr][i][j] || !nr && marker[i][j] != lastMarker[i][j]) {
                DrawSquare(i, j, board[i][j], do_flash);
            }
     } else {
@@ -955,6 +956,9 @@ DrawPosition (int repaint, Board board)
     lastBoardValid[nr] = 1;
   if(nr == 0) { // [HGM] dual: no highlights on second board yet
     lastFlipView = flipView;
+    for (i = 0; i < BOARD_HEIGHT; i++)
+       for (j = 0; j < BOARD_WIDTH; j++)
+           lastMarker[i][j] = marker[i][j];
 
     /* Draw highlights */
     if (pm1X >= 0 && pm1Y >= 0) {