fixed pawn gen, onto the next perf

1 files changed, 46 insertions, 0 deletions

diff --git a/src/bitboard.c b/src/bitboard.c
index 9df3855..1c3ed28 100644
--- a/src/bitboard.c
+++ b/src/bitboard.c
@@ -47,6 +47,52 @@ bool check_valid_position(position_t position) {
   return true;
 }
 
+char get_piece_char(size_t piece_type) {
+  assert(piece_type < PIECE_TYPE_COUNT);
+  if (WHITE_KING == piece_type) return 'K';
+  if (WHITE_QUEEN == piece_type) return 'Q';
+  if (WHITE_ROOK == piece_type) return 'R';
+  if (WHITE_BISHOP == piece_type) return 'B';
+  if (WHITE_KNIGHT == piece_type) return 'N';
+  if (WHITE_PAWN == piece_type) return 'P';
+  if (BLACK_KING == piece_type) return 'k';
+  if (BLACK_QUEEN == piece_type) return 'q';
+  if (BLACK_ROOK == piece_type) return 'r';
+  if (BLACK_BISHOP == piece_type) return 'b';
+  if (BLACK_KNIGHT == piece_type) return 'n';
+  if (BLACK_PAWN == piece_type) return 'p';
+}
+
+char get_piece_char_from_sqr(position_t position, size_t square) {
+  assert(square < 64);
+  for (int i = 0; i < PIECE_TYPE_COUNT; i++) {
+    if ((position.bitboards[i] >> square) & (bitboard_t)1) {
+      return get_piece_char(i);
+    }
+  }
+  return ' ';
+}
+
+void print_position(position_t position) {
+  for (int i = 8; i > 0; i--) {
+    printf("+---+---+---+---+---+---+---+---+\n");
+    printf(
+      "| %c | %c | %c | %c | %c | %c | %c | %c | %d\n",
+      get_piece_char_from_sqr(position, 8 * i - 8),
+      get_piece_char_from_sqr(position, 8 * i - 7),
+      get_piece_char_from_sqr(position, 8 * i - 6),
+      get_piece_char_from_sqr(position, 8 * i - 5),
+      get_piece_char_from_sqr(position, 8 * i - 4),
+      get_piece_char_from_sqr(position, 8 * i - 3),
+      get_piece_char_from_sqr(position, 8 * i - 2),
+      get_piece_char_from_sqr(position, 8 * i - 1),
+      i
+    );
+  }
+  printf("+---+---+---+---+---+---+---+---+\n");
+  printf("  a   b   c   d   e   f   g   h\n");
+}
+
 void print_bitboard(bitboard_t bitboard) {
   printf("Bitboard(%" PRIu64 ")\n", bitboard);
   for (int i = 7; i >= 0; i--) {