chess-puzzles

commit aaac499d48085948814415956d3eb4ded33eb704
parent dab21427a28e5561843d56cb4de324cddd4c53c7
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Wed, 20 Dec 2023 19:26:30 +0100

when moving the king or castling remove the ability to castle

+ a pedantic ctype fix.

Diffstat:
M
fen_to_svg.c
 | 
6
+++++-

1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fen_to_svg.c b/fen_to_svg.c
@@ -559,6 +559,8 @@ main(int argc, char *argv[])
 					y2 = 7;
 					place(0, x2, y2);
 				}
+				/* remove the ability to castle */
+				white_can_castle[0] = white_can_castle[1] = 0;
 			} else if (piece == 'k' && y == 0 && y2 == 0 && x == 4) {
 				/* black: kingside castling: "e8g8" */
 				if (x2 == 6) {
@@ -573,12 +575,14 @@ main(int argc, char *argv[])
 					y2 = 0;
 					place(0, x2, y2); /* clear rook square */
 				}
+				/* remove the ability to castle */
+				black_can_castle[0] = black_can_castle[1] = 0;
 			}
 
 			/* possible promotion: queen, knight, bishop */
 			if (*s == 'q' || *s == 'n' || *s == 'b') {
 				if (side_to_move == 'w')
-					piece = toupper(*s);
+					piece = toupper((unsigned char)*s);
 				else
 					piece = *s;
 				place(piece, x2, y2);