BishBosh.Component.Turn

AUTHOR

Dr. Alistair Ward

DESCRIPTION

The details of a player's turn.

Types

Data-types

data Turn

• Defines one turn of a player.
• Additional data is recorded to facilitate both rollback & recording of the move in various conventional notations.

Instances

Eq Turn

Defined in BishBosh.Component.Turn

Methods

(==) :: Turn -> Turn -> Bool

(/=) :: Turn -> Turn -> Bool

Read Turn

Defined in BishBosh.Component.Turn

Methods

readsPrec :: Int -> ReadS Turn

readList :: ReadS [Turn]

readPrec :: ReadPrec Turn

readListPrec :: ReadPrec [Turn]

Show Turn

Defined in BishBosh.Component.Turn

Methods

showsPrec :: Int -> Turn -> ShowS

show :: Turn -> String

showList :: [Turn] -> ShowS

NFData Turn

Defined in BishBosh.Component.Turn

Methods

rnf :: Turn -> ()

ReflectableOnX Turn

Defined in BishBosh.Component.Turn

Methods

reflectOnX :: Turn -> Turn

ShowNotation Turn

Defined in BishBosh.Notation.MoveNotation

Methods

showsNotation :: MoveNotation -> Turn -> ShowS

Functions

compareByLVA :: EvaluateRank -> Turn -> Turn -> Ordering

Forwards the request to compareByLVA.

compareByMVVLVA :: EvaluateRank -> Turn -> Turn -> Ordering

• Compares turns by https://www.chessprogramming.org/MVV-LVA.
• This orders the most valuable victim of an attack first, but when victims are of equal rank, orders the least valuable aggressor first.
• N.B.: the order of non-capture moves (including promotions) isn't defined.
• CAVEAT: no account is made for any defenders of the attacked piece, which might recoup transient gains.

Constructor

mkTurn :: QualifiedMove -> Rank -> Turn

Smart constructor.

Predicates

isCapture :: Turn -> Bool

Convenience.

isPawnDoubleAdvance

Arguments

:: LogicalColour

Defines the side whose turn is referenced.

-> Turn

-> Bool

Whether the turn represents a Pawn's initial two-square advance.