Architecture: Attack

Implementation at

Attack.h and Attack.cpp.

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Purpose

Check whether a square is attacked.

Count how much time a square is attacked.

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Why This Architechture?

• Due to two-dimensional board design, one must enumerate every square that a square can be attacked from.
• By separating counting and checking system, it will be faster to use isSquareAttacked() than countSquareAttacks().

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Scope

Includes

• Count how many pieces are attacking the square.
• Check whether the square is attacked.

Excludes

• Get which piece is attacking the square.

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Data Flow

isSquareAttacked()

isSquareAttacked(board, pos, player)

=== ↓ ===

isPawnAttacking(board, pos, player)
isKnightAttacking(board, pos, player)
isDiagonalAttacking(board, pos, player)
isStraightAttacking(board, pos, player)
isKingAttacking(board, pos, player)

=== ↓ ===

return bool

countSquareAttacks()

isSquareAttacked(board, pos, player)

=== ↓ ===

countPawnAttacks(board, pos, player)
countKnightAttacks(board, pos, player)
countDiagonalAttacks(board, pos, player)
countStraightAttacks(board, pos, player)
countKingAttacks(board, pos, player)

=== ↓ ===

return counts