BishBosh.State.Position

AUTHOR

Dr. Alistair Ward

DESCRIPTION

• Defines the state of the game, without regard to how it arrived there; https://chessprogramming.wikispaces.com/Chess+Position.
• Games with the same position have the same opportunities.
• N.B.: pieces are fungible, i.e. they lack identity, so the location of identical pieces may be exchanged, without altering the position.

Types

Data-types

data Position x y

• The state of the game, without regard to how it arrived there; https://chessprogramming.wikispaces.com/Chess+Position.
• Games with the same position may be considered to have converged, since they now have equal opportunity.

Instances

(Ix x, Enum x, Enum y, Ord y) => Hashable2D Position x y

Methods

listRandoms2D :: Position x y -> Zobrist x y positionHash -> [positionHash]

(Enum x, Enum y, Ord x, Ord y) => Eq (Position x y)

Methods

(==) :: Position x y -> Position x y -> Bool

(/=) :: Position x y -> Position x y -> Bool

(Enum x, Enum y, Ord x, Ord y) => Ord (Position x y)

Methods

compare :: Position x y -> Position x y -> Ordering

(<) :: Position x y -> Position x y -> Bool

(<=) :: Position x y -> Position x y -> Bool

(>) :: Position x y -> Position x y -> Bool

(>=) :: Position x y -> Position x y -> Bool

max :: Position x y -> Position x y -> Position x y

min :: Position x y -> Position x y -> Position x y

(NFData x, NFData y) => NFData (Position x y)

Methods

rnf :: Position x y -> ()

(Enum x, Enum y, Ord x, Ord y) => ReflectableOnX (Position x y)

Methods

reflectOnX :: Position x y -> Position x y

Functions

Constructors

mkPosition

Arguments

:: (Enum x, Enum y, Ord x, Ord y)

=> LogicalColour

The logical colour of the next player to move.

-> MaybePieceByCoordinates x y

-> CastleableRooksByLogicalColour x

-> Maybe (Turn x y)

The last turn made.

-> Position x y

Constructor.