From 3d7802fa6e5cff094b5fb81e57f62b4cfb902590 Mon Sep 17 00:00:00 2001
From: satr14 <admin@satr14.my.id>
Date: Sat, 25 Jul 2026 16:09:26 +0700
Subject: [PATCH] FEN parser

---
 src/lib/chess/utils.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/lib/chess/utils.ts b/src/lib/chess/utils.ts
index c597548..6f2e7f8 100644
--- a/src/lib/chess/utils.ts
+++ b/src/lib/chess/utils.ts
@@ -5,6 +5,7 @@ import { Piece } from "./types";
 
 export const startFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0";
 const CHAR_TO_PIECE: Record<string, number> = {
+  "-": Piece.EMPTY,
   "K": Piece.WHITE | Piece.KING,
   "Q": Piece.WHITE | Piece.QUEEN,
   "R": Piece.WHITE | Piece.ROOK,
@@ -31,13 +32,22 @@ export class Board {
     halfMove: 0,
     fullMove: 0,
   };
+  
   constructor() {
     this.loadFEN();
   }
 
   loadFEN(fen = startFEN) {
     const [position, turn, castling, enPassant, halfMove, fullMove] = fen.split(" ");
+    this.board.fill(Piece.EMPTY);
     
-    
+    position.split("/").forEach((row, rank) => {
+      let file = 0;
+      row.split("").forEach((char) => {
+        if (!isNaN(parseInt(char))) return file += parseInt(char);
+        this.board[rank * 8 + file] = CHAR_TO_PIECE[char]
+        file++;
+      });
+    });
   }
 }
\ No newline at end of file