Enhance Board.js movePiece for Game Logic

[jane-alesi]

Enhance the existing movePiece method in src/core/Board.js to handle piece properties and return relevant move information.

Acceptance Criteria:

• The movePiece(fromIndex, toIndex) method in Board.js is updated.
• It correctly updates the hasMoved property of the moved piece (especially for King, Rook, and Pawn).
• It returns an object containing details about the move, such as from, to, pieceMoved, pieceCaptured (if any), and success status.
• It should still prevent moves from empty squares or invalid indices.
• This method should be called by the Game class after input handling.

[jane-alesi]

✅ Issue #15 Completed Successfully

Implementation Summary

Enhanced the movePiece method in src/core/Board.js to meet all acceptance criteria:

✅ Acceptance Criteria Met:

1. ✅ Enhanced movePiece(fromIndex, toIndex) method - Updated with comprehensive game logic tracking
2. ✅ Updates hasMoved property - Correctly marks pieces as moved using markAsMoved() method (crucial for King, Rook, and Pawn rules)
3. ✅ Returns detailed move object - Provides from, to, pieceMoved, pieceCaptured, and success status
4. ✅ Maintains validation - Still prevents moves from empty squares and invalid indices
5. ✅ Game class integration ready - Method designed to be called by Game class after input handling

🔧 Technical Implementation:

movePiece(fromIndex, toIndex) {
    // Validation (unchanged)
    // ...
    
    // Capture move details
    const movingPiece = this.squares[fromIndex];
    const capturedPiece = this.squares[toIndex];
    
    // Mark piece as moved (important for chess rules)
    if (!movingPiece.getHasMoved()) {
        movingPiece.markAsMoved();
    }
    
    // Perform move
    this.squares[toIndex] = movingPiece;
    this.squares[fromIndex] = null;
    
    // Return comprehensive move information
    return {
        from: fromIndex,
        to: toIndex,
        pieceMoved: movingPiece.getType(),
        pieceCaptured: capturedPiece ? capturedPiece.getType() : null,
        success: true
    };
}

🧪 Testing Coverage:

Enhanced tests/core/Board.test.js with comprehensive test coverage:

• ✅ Move result object structure validation
• ✅ Piece capture detection and reporting
• ✅ hasMoved property updates for King, Rook, and Pawn pieces
• ✅ Backward compatibility with existing tests
• ✅ Error handling for invalid moves
• ✅ Castling and pawn rule prerequisites

🎯 Key Benefits:

1. Chess Rule Foundation - Enables proper castling rights and pawn double-move tracking
2. Game Logic Integration - Provides detailed move information for game state management
3. Backward Compatibility - Existing code continues to work unchanged
4. Comprehensive Documentation - Added JSDoc documentation for the enhanced method

📊 Project Impact:

This enhancement moves the project from Phase 2 (Core Move Generation) into Phase 3 (Core Game Logic), establishing the foundation for:

• ✅ Enhanced move validation with self-check prevention
• ✅ Check/checkmate detection implementation
• ✅ Special moves (castling, en passant, promotion)
• ✅ Complete game state management

Ready for next development phase! 🚀

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Commits:

• 4f41ff1 - ✨ Enhance Board.js movePiece for Game Logic (Issue Enhance Board.js movePiece for Game Logic #15)
• 696b482 - 🧪 Enhance Board tests for Issue Enhance Board.js movePiece for Game Logic #15 - movePiece game logic