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BGEngine.py
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BGEngine.py
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import copy
import logging
import random
logging.basicConfig(filename='/tmp/curses.log',level=logging.DEBUG)
class BGEngine():
def __init__(self,board):
self.board = copy.deepcopy(board)
self.bestMove = False
self.bestScore = 100000
def addDice(self, dice):
self.dice = copy.deepcopy(dice)
def getMoveForPlayer(self, player):
move = []
state = copy.deepcopy(self.board)
if len(self.dice) == 2:
self.genMoves(copy.deepcopy(state),player,copy.deepcopy(self.dice),move)
reversedDice = list(reversed(copy.deepcopy(self.dice)))
self.genMoves( copy.deepcopy(state), player, reversedDice, move)
else:
self.genMoves(copy.deepcopy(state),player,copy.deepcopy(self.dice),move,True)
return self.bestMove
def analyseMove(self,move,board, player):
analyseBoard = AnalyseBoard(board, move)
boardScore = analyseBoard.getBoardScoreForPlayer(player)
if boardScore < self.bestScore:
self.bestMove = move
def addMove(self, move, board,player):
self.analyseMove(move, board,player)
def genMoves(self, board, player, dice, move, doubles = False, lastPipIdx=False):
moveTried = False
if not dice:
self.addMove(move, board, player)
return
if doubles and lastPipIdx:
if player == 1:
pipList = list(range(1,lastPipIdx))
else:
pipList = list(range(lastPipIdx,1, -1))
else:
if player == 1:
pipList = list(range(1,25))
else:
pipList = list(range(24,0,-1))
homeCheck = board.canPlayerMoveOff(player)
jail = board.isPlayerInJail(player)
board.setBoardForPlayer(player)
state = board.board
for die in dice:
if jail:
cloneBoard = copy.deepcopy(board)
diceToPassOn = copy.deepcopy(dice)
if player == 1:
newPip = 25 - die
else:
newPip = die
if cloneBoard.movePiece(player, 'jail', newPip):
cloneMove = copy.deepcopy(move)
cloneMove.append(('jail', newPip))
diceToPassOn.remove(die)
self.genMoves(cloneBoard, player, diceToPassOn,cloneMove,doubles)
moveTried = True
# continue here??
# we started in jail so no point in doing the stuff below
if homeCheck:
if player == 1:
lastFewPips = list(range(6,0,-1))
else:
lastFewPips = list(range(19,25))
for pip in lastFewPips:
pipIdx = board.convertViewPosToIdx(pip)
if board.doesPositionHaveSameTypeOfPiece(pipIdx,player):
diceToPassOn = copy.deepcopy(dice)
cloneBoard = copy.deepcopy(board)
if cloneBoard.movePiece(player, pip, 'home'):
cloneMove = copy.deepcopy(move)
cloneMove.append((pip, 'home'))
diceToPassOn.remove(die)
self.genMoves(cloneBoard, player, diceToPassOn, cloneMove,doubles,pip)
moveTried = True
for pip in pipList:
pipIdx = board.convertViewPosToIdx(pip)
if board.doesPositionHaveSameTypeOfPiece(pipIdx,player):
diceToPassOn = copy.deepcopy(dice)
cloneBoard = copy.deepcopy(board)
if player == 1:
newPip = pip - die
else :
newPip = pip + die
if newPip <= 0:
continue
if newPip >= 25:
continue
if cloneBoard.movePiece(player, pip, newPip):
cloneMove = copy.deepcopy(move)
cloneMove.append((pip, newPip))
diceToPassOn.remove(die)
self.genMoves(cloneBoard, player, diceToPassOn, cloneMove,doubles,pip)
moveTried = True
# if we end up using less than our dice pass up a move with less than
# the full amount
if not moveTried and move:
self.addMove(move, board,player)
class AnalyseBoard():
def __init__(self, board, move):
self.board = board
self.move = move
def getBoardScoreForPlayer(self, player):
pipDiff = self.getPipCountDiff(player)
blotScore = self.getBlotDanger(player)
runOfDoubles, doubleCount = self.getBlockersAndDoubles(player)
moveOffScore = self.prioritizeMovingOff(player)
return pipDiff + blotScore + runOfDoubles + doubleCount + moveOffScore
def prioritizeMovingOff(self,player):
moveOffScore = 0
if self.board.canPlayerMoveOff(player):
if [oneMove for oneMove in self.move if oneMove[1] == 'home']:
moveOffScore -= 1000
return moveOffScore
def getBlockersAndDoubles(self, player):
doubleCount = 0
runOfDoubles = 0
maxDoubleCount = doubleCount
runOfDoubles = False
for idx in self.board.getOutFieldRange():
if self.board.doesPositionHaveSameTypeOfPiece(idx,player):
if abs(self.board.board[idx]) >= 2:
runOfDoubles = True
else:
runOfDoubles = False
else:
runOfDoubles = False
if runOfDoubles:
doubleCount += 1
runOfDoubles += 1
if runOfDoubles > maxDoubleCount:
maxDoubleCount = runOfDoubles
else:
runOfDoubles = 0
return -1 * 4 * maxDoubleCount, -1 * 8 * doubleCount
def getPipCountDiff(self,player):
pipCount = self.board.getPipCount()
if player == 1:
pipDiff = pipCount[str(player)] - pipCount['-1']
else :
pipDiff = pipCount[str(player)] - pipCount['1']
return pipDiff
def getBlotDanger(self, player):
idxForBlots = []
for idx in self.board.getOutFieldRange():
if self.board.doesPositionHaveBlotForPlayer(idx, player):
if self.isBlotInDanger(idx, player):
idxForBlots.append(idx)
return 4 * len(idxForBlots)
def isBlotInDanger(self,blotIdx, player):
myList = list(self.board.getOutFieldRange())
for idx in myList[::-1]:
if idx < blotIdx:
if not self.board.doesPositionHaveSameTypeOfPiece(idx,player):
if abs(self.board.board[idx]) == 1:
blotDiff = blotIdx - idx
if blotDiff < 12 or blotDiff in [15, 20, 24]:
return True
return False