Can print the board now

src/engine/board.c

@@ -7,6 +7,20 @@
 #define QUEEN_MAXMOVES 27
 #define KING_MAXMOVES 10 // Castling has to be taken into account
 
+#define WHITE_PAWN "\u2659"
+#define WHITE_KNIGHT "\u2658"
+#define WHITE_BISHOP "\u2657"
+#define WHITE_ROOK "\u2656"
+#define WHITE_QUEEN "\u2655"
+#define WHITE_KING "\u2654"
+
+#define BLACK_PAWN "\u265F"
+#define BLACK_KNIGHT "\u265E"
+#define BLACK_BISHOP "\u265D"
+#define BLACK_ROOK "\u265C"
+#define BLACK_QUEEN "\u265B"
+#define BLACK_KING "\u265A"
+
 PieceColors piece_getColor(const Pieces piece) { return Black & piece; }
 Piece piece_getColorlessPiece(const Pieces piece) {
   return piece_getColor(piece) ^ piece;
@@ -165,3 +179,44 @@ bool board_movePiece(Board board, const Coordinates from,
   b[from_index].piece = -1;
   return true;
 }
+
+void board_print(const Board board) {
+  printf("┌───┬───┬───┬───┬───┬───┬───┬───┐\n");
+  uint i = 0;
+  while (i < 64) {
+    PieceColors piece_color = piece_getColor(board.squares[i].piece);
+    Pieces bare_piece = piece_getColorlessPiece(board.squares[i].piece);
+    char *unicode;
+    switch (bare_piece) {
+    case Pawn:
+      unicode = piece_color == White ? WHITE_PAWN : BLACK_PAWN;
+      break;
+    case Knight:
+      unicode = piece_color == White ? WHITE_KNIGHT : BLACK_KNIGHT;
+      break;
+    case Bishop:
+      unicode = piece_color == White ? WHITE_BISHOP : BLACK_BISHOP;
+      break;
+    case Rook:
+      unicode = piece_color == White ? WHITE_ROOK : BLACK_ROOK;
+      break;
+    case Queen:
+      unicode = piece_color == White ? WHITE_QUEEN : BLACK_QUEEN;
+      break;
+    case King:
+      unicode = piece_color == White ? WHITE_KING : BLACK_KING;
+      break;
+    }
+
+    printf("│ %s ", board.squares[i].piece == -1 ? " " : unicode);
+    if ((i + 1) % 8 == 0) {
+      const uint row = ((64 - i + 1) / 8) % 8 + 1;
+      printf("│  %d\n", row);
+      if (row != 1)
+        printf("├───┼───┼───┼───┼───┼───┼───┼───┤\n");
+    }
+    i++;
+  }
+  printf("└───┴───┴───┴───┴───┴───┴───┴───┘\n");
+  printf("  A   B   C   D   E   F   G   H");
+}

src/engine/board.h

@@ -28,5 +28,6 @@ Piece piece_getColorlessPiece(const Pieces piece);
 bool board_movePiece(Board board, const Coordinates from, const Coordinates to);
 int board_getIndex(const Coordinates coords);
 Coordinates *piece_getMoves(const Pieces piece, const Coordinates piece_coords);
+void board_print(const Board board);
 
 #endif // !__BOARD_HEADER

src/engine/fen.h

@@ -2,7 +2,19 @@
 #define __FEN_HEADER
 #include "board.h"
 
-typedef char FEN[75];
+/*
+<board> <turn> <castling> <en passant target> <halfmove clock> <fmove number>;
+
+<board> represents the positions of pieces on the board.
+<turn> indicates which player's turn it is.
+<castling> specifies castling availability.
+<en passant target> indicates the square to which an en passant capture is
+possible.
+<halfmove clock> is the number of halfmoves since the last capture or
+pawn advance.
+<fullmove number> is the number of the full move.
+*/
+typedef char FEN[89];
 void fen_fromBoard(const Board board, FEN fen);
 void fen_toBoard(const FEN fen, Board *board);
 

src/main.c

@@ -1,21 +1,24 @@
 #include "engine.h"
+#include <locale.h>
 
 void printFEN(void *value) { printf("%s", (char *)value); }
 void printString(void *value) { printf("%s", *(char **)value); }
 
 int main() {
+  setlocale(LC_ALL, "");
   Board board;
   FEN fen = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR";
   fen_toBoard(fen, &board);
-  board.history = linkedList_init(&fen);
-  Coordinates *coords =
-      piece_getMoves(board.squares[3].piece, board.squares[3].coords);
-  char a[] = "hello";
-  linkedList_append(board.history, &a);
-  printf("%d\n", linkedList_length(board.history));
-  linkedList_print(board.history, printFEN);
-  free(coords);
-  linkedList_removeAll(board.history);
+  board_print(board);
+  // board.history = linkedList_init(&fen);
+  // Coordinates *coords =
+  //     piece_getMoves(board.squares[3].piece, board.squares[3].coords);
+  // char a[] = "hello";
+  // linkedList_append(board.history, &a);
+  // printf("%d\n", linkedList_length(board.history));
+  // linkedList_print(board.history, printFEN);
+  // free(coords);
+  // linkedList_removeAll(board.history);
   // char *a = "hello";
   // LinkedList *head = linkedList_init(&a);
   // char *b = "world";