Mercurial > hg > terminal-chess / file diff

--- a/src/chess/knight.c	Sun Aug 02 15:19:47 2026 +0200
+++ b/src/chess/knight.c	Thu Aug 06 14:45:55 2026 +0200
@@ -37,3 +37,36 @@
     
     return (dx == 2 && dy == 1) || (dx == 1 && dy == 2);
 }
+
+size_t knight_moves(GameState *gamestate, Color c, Row r, File f, Move *moves) {
+
+    size_t count = 0;
+    const int offsets[8][2] = {
+        { 2,  1},
+        { 2, -1},
+        {-2,  1},
+        {-2, -1},
+        { 1,  2},
+        { 1, -2},
+        {-1,  2},
+        {-1, -2}
+    };
+
+    for (size_t i = 0 ; i < 8 ; i++) {
+        int row = r + offsets[i][0];
+        int file = f + offsets[i][1];
+
+        if (isidx(row) && isidx(file)) {
+            moves[count] = (Move){0};
+            moves[count].piece = mkpiece(KNIGHT, c);
+            moves[count].fromrow = r;
+            moves[count].fromfile = f;
+            moves[count].torow = row;
+            moves[count].tofile = file;
+            moves[count].capture = piece_at(gamestate, row, file) != 0;
+            count++;
+        }
+    }
+
+    return count;
+}