BishBosh.StateProperty.Seeker

AUTHOR

Dr. Alistair Ward

DESCRIPTION

Permits discovery within a board.

Types

Type-synonyms

type NPiecesByFileByLogicalColour = ArrayByLogicalColour NPiecesByFile

The number of pieces in each file, for each logical colour.

Type-classes

class Seeker seeker where

An interface which may be implemented by data which can search the board.

Minimal complete definition

findProximateKnights, findPieces

Methods

findProximateKnights

Arguments

:: seeker

-> LogicalColour

The logical colour of the Knight for which to search.

-> Coordinates

The destination to which the Knight is required to be capable of jumping.

-> [Coordinates]

Locate any Knights capable of taking a piece at the specified coordinates.

findPieces

Arguments

:: (Piece -> Bool)

Predicate.

-> seeker

-> [LocatedPiece]

Locate any pieces satisfying the specified predicate.

countPawnsByFileByLogicalColour :: seeker -> NPiecesByFileByLogicalColour

• Counts the number of Pawns of each logical colour with similar x-coordinates; their y-coordinate is irrelevant.
• N.B.: files lacking any Pawn, don't feature in the results.

Instances

Seeker MaybePieceByCoordinates

• Find any Knights of the specified logical colour, in attack-range around the specified coordinates.
• CAVEAT: nothing is said about whether any piece at the specified coordinates belongs to the opponent, as one might expect.
• CAVEAT: less efficient than findProximateKnights.

Defined in BishBosh.State.MaybePieceByCoordinates

Methods

findProximateKnights :: MaybePieceByCoordinates -> LogicalColour -> Coordinates -> [Coordinates]

findPieces :: (Piece -> Bool) -> MaybePieceByCoordinates -> [LocatedPiece]

countPawnsByFileByLogicalColour :: MaybePieceByCoordinates -> NPiecesByFileByLogicalColour

Seeker CoordinatesByRankByLogicalColour

• Find any Knights of the specified logical colour, in attack-range around the specified coordinates.
• CAVEAT: nothing is said about whether any piece at the specified coordinates belongs to the opponent, as one might expect.

Defined in BishBosh.State.CoordinatesByRankByLogicalColour

Methods

findProximateKnights :: CoordinatesByRankByLogicalColour -> LogicalColour -> Coordinates -> [Coordinates]

findPieces :: (Piece -> Bool) -> CoordinatesByRankByLogicalColour -> [LocatedPiece]

countPawnsByFileByLogicalColour :: CoordinatesByRankByLogicalColour -> NPiecesByFileByLogicalColour

Seeker Board

Defined in BishBosh.State.Board

Methods

findProximateKnights :: Board -> LogicalColour -> Coordinates -> [Coordinates]

findPieces :: (Piece -> Bool) -> Board -> [LocatedPiece]

countPawnsByFileByLogicalColour :: Board -> NPiecesByFileByLogicalColour

Functions

accumulatePawnsByFile :: X -> NPiecesByFile -> NPiecesByFile

Add a Pawn's file to the map.

findAllPieces :: Seeker seeker => seeker -> [LocatedPiece]

Locate all pieces on the board.

summariseNPawnsByLogicalColour :: Seeker seeker => seeker -> ArrayByLogicalColour NPieces

Resolves NPiecesByFileByLogicalColour into the total number of Pawns on either side.

findInvalidity :: Seeker seeker => seeker -> [String]

Self-validate.