oysteikt-skolearbeid/TDT4109
oysteikt-skolearbeid/TDT4109
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add some more logic

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This commit is contained in:
Oystein Kristoffer Tveit 2020-11-12 00:17:02 +01:00
parent 4335edea97
commit d630115cce
3 changed files with 133 additions and 20 deletions
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113
Exercise 10/chess/board.py
View File

@ -1,4 +1,6 @@
from typing import Callable, Iterable
from os import system
from shutil import get_terminal_size as getTerminalSize
from piece import Piece
@ -7,13 +9,11 @@ class Board:
def __init__(self):
self.boardArray = [
# [],
[Piece('p', 'black') for _ in range(8)],
[Piece(type, 'black') for type in ['r', 'n', 'b', 'q', 'k', 'b', 'n', 'r']],
[Piece('p', 'black') for _ in range(8)],
*[[None for _ in range(8)] for _ in range(4)],
[Piece('p', 'white') for _ in range(8)],
[Piece('p', 'white') for _ in range(8)],
# [],
[Piece(type, 'white') for type in ['r', 'n', 'b', 'q', 'k', 'b', 'n', 'r']],
]
def draw(
@ -22,7 +22,6 @@ class Board:
'highlightedContent': [],
'highlightEscapeCodes': ('\033[32;5;7m', '\033[0m'),
'highlightedBoxes': [],
'center': False
}
) -> str:
"""Returns a string representing the board
@ -31,7 +30,6 @@ class Board:
highlightedContent: [(x,y)] - Pieces to color
highlightEscapeCodes: (str, str) - Terminal escape codes to color highlightedContent with
highlightedBoxes: [(x,y)] - Boxes to make bold
center: Bool - Whether or not to indent the board into the center
"""
def fillConfigDefaultValue(key, defaultValue):
@ -41,7 +39,6 @@ class Board:
fillConfigDefaultValue('highlightedContent', [])
fillConfigDefaultValue('highlightedBoxes', [])
fillConfigDefaultValue('highlightEscapeCodes', ('\033[32;5;7m', '\033[0m'))
fillConfigDefaultValue('center', False)
# Draw general outline
stringArray = [list('┼' + '───┼' * 8)] + [[None] for _ in range(8 * 2)]
@ -107,20 +104,34 @@ class Board:
for x, y in config['highlightedContent']:
highlightContent(x, y)
# TODO: Center board
return '\n'.join([''.join(line) for line in stringArray])
def selectPiece(self, player) -> tuple:
def selectPiece(self, player, x=0, y=0, centering=True) -> tuple:
"""Lets the user select a piece from a graphic board"""
x, y = 0, 0
while True:
system('clear')
print(player.name, '\n')
print(self.draw({'highlightedBoxes': [(x, y)]}), '\n')
menuString = '\n' + player.name + '\n\n'
menuString += self.draw({'highlightedBoxes': [(x, y)]}) + '\n'
inputString = f" W E\nA S D <- Enter : "
key = input(f" W E\n A S D <- Enter : ")[0]
def centerText(text):
terminalWidth = getTerminalSize((60, 0))[0] # Column size 60 as fallback
return "\n".join(line.center(terminalWidth) for line in text.split('\n'))
def centerBlockText(text):
terminalWidth = getTerminalSize((60, 0))[0] # Column size 60 as fallback
textArray = text.split('\n')
offset = int((terminalWidth - len(textArray[0])) / 2)
return "\n".join(offset * ' ' + line for line in textArray)
if centering:
menuString = centerText(menuString)
inputString = centerBlockText(inputString)
print(menuString)
key = input(inputString)[0]
if key in ['s', 'j'] and y != 7: y += 1
elif key in ['w', 'k'] and y != 0: y -= 1
elif key in ['d', 'l'] and x != 7: x += 1
@ -129,3 +140,77 @@ class Board:
def getPieceAt(self, x, y) -> Piece:
return self.boardArray[y][x]
def getPositionsWhere(self, condition: Callable[[Piece], bool]) -> Iterable[tuple]:
""" Returns a list of xy pairs of the pieces where a condition is met """
result = []
for y, row in enumerate(self.boardArray):
for x, piece in enumerate(row):
if condition(piece):
result.append((x, y))
return result
def checkCheck(self, color) -> bool:
"""Check whether a team is caught in check. The color is the color of the team to check"""
king = self.getPositionsWhere(lambda piece: piece.type == 'k' and piece.color == color)
piecesToCheck = self.getPositionsWhere(lambda piece: piece.color != color)
return any([king in Piece.possibleMoves(*piece, self) for piece in piecesToCheck])
def getPositionsToProtectKing(self, color) -> Iterable[tuple]:
"""Get a list of the positions to protect in order to protect the king when in check. The color is the color of the team who's in check"""
king = self.getPositionsWhere(lambda piece: piece.type == 'k' and piece.color == color)
piecesToCheck = self.getPositionsWhere(lambda piece: piece.color != color)
for piece in piecesToCheck:
if king not in Piece.possibleMoves(*piece, self):
piecesToCheck.remove(piece)
result = []
for piece in piecesToCheck:
result.append(piece)
if self.getPieceAt(*piece).type not in ['p', 'n', 'k']:
def getDirection(fromPosition, toPosition) -> tuple:
x = -1 if toPosition[0] > fromPosition[0] else \
0 if toPosition[0] == fromPosition[0] else 1
y = -1 if toPosition[1] > fromPosition[1] else \
0 if toPosition[1] == fromPosition[1] else 1
return (x, y)
direction = getDirection(piece, king)
def getPositionsUntilKing(x, y, direction):
result = []
while self.getPieceAt(x, y) == None:
result.append((x, y))
x += direction[0]
y += direction[1]
return result
result += getPositionsUntilKing(*piece, direction)
return result
def checkStaleMate(self, color) -> bool:
"""Check whether a team is caught in stalemate. The color is the color of the team to check"""
enemyPieces = self.getPositionsWhere(lambda piece: piece.color == color)
getLegalMoves = lambda piece: Piece.possibleMoves(*piece, self, legalMoves = self.getPositionsToProtectKing(color))
piecesHasNoLegalMoves = any( getLegalMoves(piece) == None for piece in enemyPieces)
return (not self.checkCheck(color)) and piecesHasNoLegalMoves
def checkCheckMate(self, color) -> bool:
"""Check whether a team is caught in checkmate. The color is the color of the team to check"""
enemyPieces = self.getPositionsWhere(lambda piece: piece.color == color)
getLegalMoves = lambda piece: Piece.possibleMoves(*piece, self, legalMoves = self.getPositionsToProtectKing(color))
piecesHasNoLegalMoves = any( getLegalMoves(piece) == None for piece in enemyPieces)
return self.checkCheck(color) and piecesHasNoLegalMoves
def movePiece(self, position, toPosition, piecesToRemove=None):
x, y = position
toX, toY = toPosition
self.boardArray[toY][toX] = self.boardArray[y][x]
self.boardArray[y][x] = None
if piecesToRemove != None:
for x, y in piecesToRemove:
self.boardArray[y][x] = None

17
Exercise 10/chess/chess.py
View File

@ -1,7 +1,8 @@
from board import Board
from os import system
from dataclasses import dataclass
from board import Board
@dataclass
class Player:
name: str
@ -12,8 +13,20 @@ class Chess:
def __init__(self, players):
self.players = players
def lose(self, player):
print(player.name, 'lost.')
exit(0)
def update(self):
system('clear')
board.selectPiece(players[0])
if board.checkCheckMate(players[1].color):
self.lose(players[1])
system('clear')
board.selectPiece(players[1])
if board.checkCheckMate(players[0].color):
self.lose(players[0])
def loop(self):
while True:
@ -30,4 +43,4 @@ if __name__ == "__main__":
# game = Chess(('Spiller 1', 'Spiller 2'))
# game.loop()
board = Board()
print(board.selectPiece(players[0]))
print(board.selectPiece(players[0], centering=True))

23
Exercise 10/chess/piece.py
View File

@ -1,5 +1,6 @@
from typing import Iterable, Callable
from itertools import product
from copy import deepcopy
class Piece:
@ -12,21 +13,29 @@ class Piece:
return self.type.upper() if self.color == 'white' else self.type
@staticmethod
def possibleMoves(x, y, board) -> Callable[[int, int], Iterable[tuple]]:
def possibleMoves(x, y, board, legalMoves=None) -> Callable[[int, int], Iterable[tuple]]:
piece = board.getPieceAt(x, y)
moves = []
# TODO: If player is in check, only validate the moves that are leading to places that can be blocked in order to save the king. Make a function that overwrites `moves`. Notice: The king is the only piece that can 'Escape' to a position that may or may not be in the list of positions to be blocked. Make an exception
pieceIsEnemyColor = lambda pieceToCheck: pieceToCheck != None and pieceToCheck.color != piece.color
pieceIsEmpty = lambda pieceToCheck: pieceToCheck == None
pieceIsEmptyOrEnemyColor = lambda pieceToCheck: pieceToCheck == None or pieceToCheck.color != piece.color
def addMoveIfTrue(xOffset, yOffset, condition):
def addMoveIfTrue(xOffset, yOffset, condition: Callable[[Piece], bool]):
"""Tests a condition against a position away from self. Adds if condition returns true"""
if condition(board.getPieceAt(x + xOffset, y + yOffset)):
moves.append((x + xOffset, y + yOffset))
return True
return False
def addWhileInsideBoard(direction):
def assertNotCheck(newX, newY) -> bool:
testBoard = deepcopy(board)
testBoard.movePiece((x, y), (newX, newY)) # J
return not testBoard.checkCheck()
def addWhileInsideBoard(direction: tuple):
localX = x
localY = y
while localX not in [0, 7] and localY not in [0, 7]:
@ -55,7 +64,8 @@ class Piece:
positions.remove((0, 0))
for position in positions:
addMoveIfTrue(*position, pieceIsEmptyOrEnemyColor)
# TODO: Check moves for check and remove the bad ones
moves = [position for position in moves if assertNotCheck(*position)]
elif piece.type == 'r':
for direction in product([0, 1], repeat=2):
@ -71,4 +81,9 @@ class Piece:
for direction in directions:
addWhileInsideBoard(direction)
#TODO: remove moves that will put the king in check
if legalMoves != None and piece.type != 'k':
moves = [move for move in moves if move in legalMoves]
return moves