Fix reading of startposition FEN starting with *

[xboard.git] / backend.c

diff --git a/backend.c b/backend.c
index 3730e07..6cd2224 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -5528,7 +5528,7 @@ ParseOneMove (char *move, int moveNum, ChessMove *moveType, int *fromX, int *fro
       /* End of code added by Tord */
       case IllegalMove:                /* bug or odd chess variant */
        if(currentMoveString[1] == '@') { // illegal drop
-         *fromX = *moveType == WhiteOnMove(moveNum) ?
+         *fromX = WhiteOnMove(moveNum) ?
            (int) CharToPiece(ToUpper(currentMoveString[0])) :
            (int) CharToPiece(ToLower(currentMoveString[0]));
          goto drop;
@@ -6566,7 +6566,7 @@ HasPromotionChoice (int fromX, int fromY, int toX, int toY, char *promoChoice, i
         promotionZoneSize = BOARD_HEIGHT/3;
         highestPromotingPiece = (p >= WhiteLion || PieceToChar(piece + 22) == '.') ? WhitePawn : WhiteLion;
     } else if(gameInfo.variant == VariantShogi) {
-        promotionZoneSize = BOARD_HEIGHT/3;
+        promotionZoneSize = BOARD_HEIGHT/3 +(BOARD_HEIGHT == 8);
         highestPromotingPiece = (int)WhiteAlfil;
     } else if(gameInfo.variant == VariantMakruk || gameInfo.variant == VariantGrand || gameInfo.variant == VariantChuChess) {
         promotionZoneSize = 3;
@@ -12075,8 +12075,13 @@ LoadGameOneMove (ChessMove readAhead)
            if (appData.debugMode)
              fprintf(debugFP, "Parsed %s into IllegalMove %s\n",
                      yy_text, currentMoveString);
-            fromX = currentMoveString[0] - AAA;
-            fromY = currentMoveString[1] - ONE;
+            if(currentMoveString[1] == '@') {
+                fromX = CharToPiece(WhiteOnMove(currentMove) ? ToUpper(currentMoveString[0]) : ToLower(currentMoveString[0]));
+                fromY = DROP_RANK;
+            } else {
+                fromX = currentMoveString[0] - AAA;
+                fromY = currentMoveString[1] - ONE;
+            }
             toX = currentMoveString[2] - AAA;
             toY = currentMoveString[3] - ONE;
            promoChar = currentMoveString[4];
@@ -12693,7 +12698,10 @@ LoadGame (FILE *f, int gameNumber, char *title, int useList)
     int numPGNTags = 0;
     int err, pos = -1;
     GameMode oldGameMode;
-    VariantClass oldVariant = gameInfo.variant; /* [HGM] PGNvariant */
+    VariantClass v, oldVariant = gameInfo.variant; /* [HGM] PGNvariant */
+    char oldName[MSG_SIZ];
+
+    safeStrCpy(oldName, engineVariant, MSG_SIZ); v = oldVariant;
 
     if (appData.debugMode)
        fprintf(debugFP, "LoadGame(): on entry, gameMode %d\n", gameMode);
@@ -13051,6 +13059,10 @@ LoadGame (FILE *f, int gameNumber, char *title, int useList)
        StartChessProgram(&first);
     }
     InitChessProgram(&first, FALSE);
+    if(gameInfo.variant == VariantUnknown && *oldName) {
+       safeStrCpy(engineVariant, oldName, MSG_SIZ);
+       gameInfo.variant = v;
+    }
     SendToProgram("force\n", &first);
     if (startedFromSetupPosition) {
        SendBoard(&first, forwardMostMove);
@@ -13243,8 +13255,8 @@ LoadPosition (FILE *f, int positionNumber, char *title)
        DisplayError(_("Position not found in file"), 0);
        return FALSE;
     }
-    // [HGM] FEN can begin with digit, any piece letter valid in this variant, or a + for Shogi promoted pieces
-    fenMode = line[0] >= '0' && line[0] <= '9' || line[0] == '+' || CharToPiece(line[0]) != EmptySquare;
+    // [HGM] FEN can begin with digit, any piece letter valid in this variant, or a + for Shogi promoted pieces (or * for blackout)
+    fenMode = line[0] >= '0' && line[0] <= '9' || line[0] == '+' || line[0] == '*' || CharToPiece(line[0]) != EmptySquare;
 
     if (pn >= 2) {
        if (fenMode || line[0] == '#') pn--;