commit b157d49005e4d9fd2e5e979b72a1e222e21fdec3
parent 52d9636da4a82de476f21b1c61de8b7570f96c92
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Thu, 29 Feb 2024 19:02:30 +0100
add option to not highlight the last played move or checks or checkmates
This is better for puzzles/training. Sometimes the last played move gives a
hint of a blunder etc.
This adds an extra challenge to analyze more properties of the position.
Diffstat:
| M | fen.1 | | | 8 | ++++++-- |
| M | fen.c | | | 20 | +++++++++++++------- |
2 files changed, 19 insertions(+), 9 deletions(-)
diff --git a/fen.1 b/fen.1
@@ -1,4 +1,4 @@
-.Dd January 14, 2024
+.Dd February 29, 2024
.Dt FEN 1
.Os
.Sh NAME
@@ -6,7 +6,7 @@
.Nd parses chess FEN, plays moves and writes output
.Sh SYNOPSIS
.Nm
-.Op Fl cCfF
+.Op Fl cCfFhH
.Op Fl l
.Op Fl m mapping
.Op Fl o Ar ascii | fen | pgn | speak | svg | tty
@@ -34,6 +34,10 @@ Disable board coordinates.
Flip the board, default is off.
.It Fl F
Do not flip the board.
+.It Fl h
+Highlight the last played move and checks or checkmates.
+.It Fl H
+Do not highlight the last played move and checks or checkmates.
.It Fl l
For PGN and speak mode only output the last move.
For PGN this will not prefix the move number.
diff --git a/fen.c b/fen.c
@@ -100,6 +100,7 @@ struct board {
int flipboard; /* flip board ? default: 0 */
int showcoords; /* board coordinates? default: 1 */
+ int highlights; /* highlight moves and checks? default: 1 */
struct theme *theme; /* board theme */
};
@@ -129,6 +130,7 @@ board_init(struct board *b)
b->movenumber = 1;
b->flipboard = 0;
b->showcoords = 1;
+ b->highlights = 1;
b->theme = &themes[0]; /* use first theme as default */
}
@@ -1388,13 +1390,15 @@ board_playmoves(struct board *b, const char *moves)
}
/* highlight last move */
- highlightmove(b, x, y);
- highlightmove(b, x2, y2);
-
- /* highlight king in check or mate */
- if (isincheck(b, b->side_to_move) &&
- findking(b, b->side_to_move, &x, &y))
- highlightcheck(b, x, y);
+ if (b->highlights) {
+ highlightmove(b, x, y);
+ highlightmove(b, x2, y2);
+
+ /* highlight king in check or mate */
+ if (isincheck(b, b->side_to_move) &&
+ findking(b, b->side_to_move, &x, &y))
+ highlightcheck(b, x, y);
+ }
}
void
@@ -1600,6 +1604,8 @@ main(int argc, char *argv[])
case 'd': dutchmode = 1; break; /* top secret dutch mode for "speak" */
case 'f': board.flipboard = 1; break;
case 'F': board.flipboard = 0; break;
+ case 'h': board.highlights = 1; break;
+ case 'H': board.highlights = 0; break;
case 'l': onlylastmove = 1; silent = 1; break;
case 'm': /* remap PGN */
if (i + 1 >= argc)
