Mercurial > hg > terminal-chess / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/rules/pawn.c	Sat Mar 22 17:23:07 2014 +0100
@@ -0,0 +1,61 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2014 Mike Becker. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "pawn.h"
+
+_Bool pawn_chkrules(Board board, Move *move) {
+    // TODO: implement
+    return TRUE;
+}
+
+_Bool pawn_isblocked(Board board, Move *move) {
+    // TODO: implement
+    return FALSE;
+}
+
+_Bool pawn_getlocation(Board board, Move *move) {
+    int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1);
+    
+    move->fromfile = move->tofile;
+    move->fromrow = move->torow + d;
+    if (move->fromrow > 6) {
+        return FALSE;
+    } else {
+        /* advanced first move */
+        if (move->fromrow == (d < 0 ? 2 : 5) &&
+            board[move->fromrow][move->fromfile] != move->piece) {
+
+            move->fromrow += d;
+            if (move->fromrow > 6) {
+                return FALSE;
+            }
+        }
+    }
+    return TRUE;
+}