aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorMarkus Uhlin <markus@nifty-networks.net>2024-05-05 17:58:13 +0200
committerMarkus Uhlin <markus@nifty-networks.net>2024-05-05 17:58:13 +0200
commit5f838735df6917ff95b658f486d548928f59723d (patch)
tree6a9d5c8cd4d2db269e6e3a592143f53b1b846190
parentd5dfd38e882c32f8d6788afb3a47e40ff34db73f (diff)
Reformatted legal_king_move()
-rw-r--r--FICS/movecheck.c98
1 files changed, 59 insertions, 39 deletions
diff --git a/FICS/movecheck.c b/FICS/movecheck.c
index 005eaf1..e3d1f51 100644
--- a/FICS/movecheck.c
+++ b/FICS/movecheck.c
@@ -307,46 +307,66 @@ PRIVATE int is_square_attacked(game_state_t * gs, int kf, int kr)
}
*/
-PRIVATE int legal_king_move(game_state_t * gs, int ff, int fr, int tf, int tr)
+PRIVATE int
+legal_king_move(game_state_t *gs, int ff, int fr, int tf, int tr)
{
- if (gs->onMove == WHITE) {
- /* King side castling */
- if ((fr == 0) && (tr == 0) && (ff == 4) && (tf == 6) && !gs->wkmoved
- && (!gs->wkrmoved) && (gs->board[5][0] == NOPIECE) &&
- (gs->board[6][0] == NOPIECE) && (gs->board[7][0] == W_ROOK) &&
- (!is_square_attacked(gs, 4, 0)) && (!is_square_attacked(gs, 5, 0))) {
- return 1;
- }
- /* Queen side castling */
- if ((fr == 0) && (tr == 0) && (ff == 4) && (tf == 2) && !gs->wkmoved
- && (!gs->wqrmoved) && (gs->board[3][0] == NOPIECE) &&
- (gs->board[2][0] == NOPIECE) && (gs->board[1][0] == NOPIECE) &&
- (gs->board[0][0] == W_ROOK) &&
- (!is_square_attacked(gs, 4, 0)) && (!is_square_attacked(gs, 3, 0))) {
- return 1;
- }
- } else { /* Black */
- /* King side castling */
- if ((fr == 7) && (tr == 7) && (ff == 4) && (tf == 6) && !gs->bkmoved
- && (!gs->bkrmoved) && (gs->board[5][7] == NOPIECE) &&
- (gs->board[6][7] == NOPIECE) && (gs->board[7][7] == B_ROOK) &&
- (!is_square_attacked(gs, 4, 7)) && (!is_square_attacked(gs, 5, 7))) {
- return 1;
- }
- /* Queen side castling */
- if ((fr == 7) && (tr == 7) && (ff == 4) && (tf == 2) && (!gs->bkmoved)
- && (!gs->bqrmoved) && (gs->board[3][7] == NOPIECE) &&
- (gs->board[2][7] == NOPIECE) && (gs->board[1][7] == NOPIECE) &&
- (gs->board[0][7] == B_ROOK) &&
- (!is_square_attacked(gs, 4, 7)) && (!is_square_attacked(gs, 3, 7))) {
- return 1;
- }
- }
- if (((ff - tf) > 1) || ((tf - ff) > 1))
- return 0;
- if (((fr - tr) > 1) || ((tr - fr) > 1))
- return 0;
- return 1;
+ if (gs->onMove == WHITE) {
+ /* King side castling */
+ if ((fr == 0) && (tr == 0) && (ff == 4) && (tf == 6) &&
+ (!gs->wkmoved) &&
+ (!gs->wkrmoved) &&
+ (gs->board[5][0] == NOPIECE) &&
+ (gs->board[6][0] == NOPIECE) &&
+ (gs->board[7][0] == W_ROOK) &&
+ (!is_square_attacked(gs, 4, 0)) &&
+ (!is_square_attacked(gs, 5, 0))) {
+ return 1;
+ }
+
+ /* Queen side castling */
+ if ((fr == 0) && (tr == 0) && (ff == 4) && (tf == 2) &&
+ (!gs->wkmoved) &&
+ (!gs->wqrmoved) &&
+ (gs->board[3][0] == NOPIECE) &&
+ (gs->board[2][0] == NOPIECE) &&
+ (gs->board[1][0] == NOPIECE) &&
+ (gs->board[0][0] == W_ROOK) &&
+ (!is_square_attacked(gs, 4, 0)) &&
+ (!is_square_attacked(gs, 3, 0))) {
+ return 1;
+ }
+ } else { /* Black */
+ /* King side castling */
+ if ((fr == 7) && (tr == 7) && (ff == 4) && (tf == 6) &&
+ (!gs->bkmoved) &&
+ (!gs->bkrmoved) &&
+ (gs->board[5][7] == NOPIECE) &&
+ (gs->board[6][7] == NOPIECE) &&
+ (gs->board[7][7] == B_ROOK) &&
+ (!is_square_attacked(gs, 4, 7)) &&
+ (!is_square_attacked(gs, 5, 7))) {
+ return 1;
+ }
+
+ /* Queen side castling */
+ if ((fr == 7) && (tr == 7) && (ff == 4) && (tf == 2) &&
+ (!gs->bkmoved) &&
+ (!gs->bqrmoved) &&
+ (gs->board[3][7] == NOPIECE) &&
+ (gs->board[2][7] == NOPIECE) &&
+ (gs->board[1][7] == NOPIECE) &&
+ (gs->board[0][7] == B_ROOK) &&
+ (!is_square_attacked(gs, 4, 7)) &&
+ (!is_square_attacked(gs, 3, 7))) {
+ return 1;
+ }
+ }
+
+ if (((ff - tf) > 1) || ((tf - ff) > 1))
+ return 0;
+ if (((fr - tr) > 1) || ((tr - fr) > 1))
+ return 0;
+ return 1;
}
PRIVATE void