| Copyright | Miika-Petteri Matikainen 2014 |
|---|---|
| License | GPL-2 |
| Maintainer | miikapetteri@gmail.com |
| Stability | experimental |
| Portability | unknown |
| Safe Haskell | Safe-Inferred |
| Language | Haskell2010 |
Chess
Description
Simple chess library for implementing chess games.
- type Board = Array Coordinates Square
- type Coordinates = (Int, Int)
- data Square
- data GameState
- currentPlayer :: GameState -> Color
- data Color
- data Piece = Piece Color PieceType
- data PieceType
- board :: GameState -> Board
- fullMoveNumber :: GameState -> Integer
- isCheckmate :: GameState -> Bool
- isDraw :: GameState -> Bool
- isLegalMove :: GameState -> String -> Bool
- isStalemate :: GameState -> Bool
- move :: GameState -> String -> Maybe GameState
- newGame :: GameState
- pieceAt :: Board -> String -> Maybe Piece
- winner :: GameState -> Maybe Color
Documentation
type Board = Array Coordinates Square Source
type Coordinates = (Int, Int) Source
Coordinate format:
(rank, file)
(0,0) (0,7)
+---> file
|
|
v
rank
(7,0) (7,7)
-
+-------+-------+-------+-------+-------+-------+-------+-------+
8 | (0,0) | (0,1) | (0,2) | (0,3) | (0,4) | (0,5) | (0,6) | (0,7) |
+-------+-------+-------+-------+-------+-------+-------+-------+
7 | (1,0) | (1,1) | (1,2) | (1,3) | (1,4) | (1,5) | (1,6) | (1,7) |
+-------+-------+-------+-------+-------+-------+-------+-------+
6 | (2,0) | (2,1) | (2,2) | (2,3) | (2,4) | (2,5) | (2,6) | (2,7) |
+-------+-------+-------+-------+-------+-------+-------+-------+
5 | (3,0) | (3,1) | (3,2) | (3,3) | (3,4) | (3,5) | (3,6) | (3,7) |
+-------+-------+-------+-------+-------+-------+-------+-------+
4 | (4,0) | (4,1) | (4,2) | (4,3) | (4,4) | (4,5) | (4,6) | (4,7) |
+-------+-------+-------+-------+-------+-------+-------+-------+
3 | (5,0) | (5,1) | (5,2) | (5,3) | (5,4) | (5,5) | (5,6) | (5,7) |
+-------+-------+-------+-------+-------+-------+-------+-------+
2 | (6,0) | (6,1) | (6,2) | (6,3) | (6,4) | (6,5) | (6,6) | (6,7) |
+-------+-------+-------+-------+-------+-------+-------+-------+
1 | (7,0) | (7,1) | (7,2) | (7,3) | (7,4) | (7,5) | (7,6) | (7,7) |
+-------+-------+-------+-------+-------+-------+-------+-------+
a b c d e f g h
currentPlayer :: GameState -> Color Source
fullMoveNumber :: GameState -> Integer Source
Full move number. Incremented after black's move.
isCheckmate :: GameState -> Bool Source
Has the game ended in checkmate
isDraw :: GameState -> Bool Source
Is the game draw? I.e. is the game stalemate or is the game draw by insufficient material.
Is the given move legal. The only supported move format at the moment is coordinate notation.
isStalemate :: GameState -> Bool Source
Has the game ended in stalemate
Arguments
| :: GameState | |
| -> String | Move in coordinate notation. E.g. "e2-e4" or "b1-c3" |
| -> Maybe GameState |
Make a move. The only supported move format at the moment is coordinate notation.
Get the piece at the given coordinate