communicating fens from frontends & fixing load_fen

4 files changed, 37 insertions, 2 deletions

diff --git a/src/engine/bitboard.c b/src/engine/bitboard.c
index 6e4f1b6..80cdb78 100644
--- a/src/engine/bitboard.c
+++ b/src/engine/bitboard.c
@@ -24,6 +24,8 @@ position_t position_starting() {
       BLACK_SHORT_CASTLE | BLACK_LONG_CASTLE,
     .turn = WHITE_TURN,
     .passantable_file = 0,
+    .halfmove_clock = 0,
+    .fullmove_clock = 1
   };
 }
 
diff --git a/src/engine/fen.c b/src/engine/fen.c
index a375b30..aa258c9 100644
--- a/src/engine/fen.c
+++ b/src/engine/fen.c
@@ -1,6 +1,5 @@
 #include <assert.h>
 #include <stdbool.h>
-#include <stdio.h>
 #include "fen.h"
 #include "bitboard.h"
 
@@ -98,7 +97,7 @@ struct fen_load load_fen(const char* fen) {
 
     int piece_type = get_piece_enum_item(c);
     if (piece_type == -1) return (struct fen_load) { true, position };
-    position.bitboards[piece_type] |= (bitboard_t)1 << square;
+    position.bitboards[piece_type] |= (bitboard_t)1 << square++;
   }
 
   c = fen[++i];
@@ -167,4 +166,32 @@ bool test_fen_passant() {
   if (p.passantable_file != 6) return false;
   return true;
 }
+
+bool test_starting_position() {
+  struct fen_load r = load_fen("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1");
+  if (r.failed) return false;
+
+  position_t position = r.position;
+  position_t expected = position_starting();
+
+  if (position.castling != expected.castling) return false;
+  if (position.passantable_file != expected.passantable_file) return false;
+  if (position.turn != expected.turn) return false;
+  if (position.fullmove_clock != expected.fullmove_clock) return false;
+  if (position.halfmove_clock != expected.halfmove_clock) return false;
+  if (position.bitboards[0] != expected.bitboards[0]) return false;
+  if (position.bitboards[1] != expected.bitboards[1]) return false;
+  if (position.bitboards[2] != expected.bitboards[2]) return false;
+  if (position.bitboards[3] != expected.bitboards[3]) return false;
+  if (position.bitboards[4] != expected.bitboards[4]) return false;
+  if (position.bitboards[5] != expected.bitboards[5]) return false;
+  if (position.bitboards[6] != expected.bitboards[6]) return false;
+  if (position.bitboards[7] != expected.bitboards[7]) return false;
+  if (position.bitboards[8] != expected.bitboards[8]) return false;
+  if (position.bitboards[9] != expected.bitboards[9]) return false;
+  if (position.bitboards[10] != expected.bitboards[10]) return false;
+  if (position.bitboards[11] != expected.bitboards[11]) return false;
+
+  return true;
+}
 #endif
diff --git a/src/engine/fen.h b/src/engine/fen.h
index 3e5cecf..d45240e 100644
--- a/src/engine/fen.h
+++ b/src/engine/fen.h
@@ -1,3 +1,6 @@
+#ifndef FEN_H
+#define FEN_H
+
 #include "bitboard.h"
 
 struct fen_load {
@@ -5,3 +8,5 @@ struct fen_load {
   position_t position;
 };
 struct fen_load load_fen(const char* fen);
+
+#endif // FEN_H
diff --git a/src/engine/ints.h b/src/engine/ints.h
index b134fe6..4a0cfe3 100644
--- a/src/engine/ints.h
+++ b/src/engine/ints.h
@@ -2,6 +2,7 @@
 #define INTS_H
 
 #include <stdint.h>
+#include <inttypes.h>
 
 typedef uint8_t u8;
 typedef uint16_t u16;