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# gcompris - connect4
#
# Time-stamp:
#
# Copyright (C) 2005 Laurent Lacheny
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# This code comes from the project 4stattack
# http://forcedattack.sourceforge.net/
#
#########################################################################
# 4st Attack 2 #
#########################################################################
# Created by: #
# Developer - "slm" - Jeroen Vloothuis #
# Graphics - "Korruptor" - Gareth Noyce #
# Music - "theGREENzebra" #
#########################################################################
# Specail thanks: #
# chakie(Jan Elkholm) - letting me "embrace and extend" his gui lib #
# Mighty(Xander Soldaat) - for the Makefile and the Debian packages #
# Han - for the rpms #
# jk - for the FreeBSD port #
# Tjerk Nan - for the Windows version #
# Micon - for the webdesign #
# Everyone in #pygame and the opensource community in general #
#########################################################################
# This software is licensed under the GPL - General Public License #
#########################################################################
from board import *
# Checks if the move is legal
def isMoveLegal(board, selector_pos):
return len(board.state[selector_pos]) < 6 and selector_pos >= 0
def isBoardFull(board):
for pos in range(7):
if len(board.state[pos]) < 6:
return 0
return 1
def isWinner(board, player):
result = _isVerticalWin(board, player)
if not result:
result = _isHorizontalWin(board, player)
if not result:
result = _isDiagonalWin(board, player)
return result
def _isVerticalWin(board, player):
x = board.last_move
four_in_a_row = [player, player, player, player]
if board.state[x][-4:] == four_in_a_row:
return ((x,len(board.state[x])-4),(x,len(board.state[x])-1))
else:
return None
def _isHorizontalWin(board, player):
x = board.last_move
y = len(board.state[x]) - 1
four_in_a_row = [player, player, player, player]
row = []
for i in range(7):
try:
row.append(board.state[i][y])
except IndexError:
row.append('s') # 's' stands for sentinel
for i in range(4):
try:
if row[x - 3 + i : x + 1 +i] == four_in_a_row:
return ((x -3 + i,y),( x +i,y))
except IndexError:
pass
return None
def _isDiagonalWin(board, player):
x = board.last_move
y = len(board.state[x]) - 1
four_in_a_row = [player, player, player, player]
row = []
for i in range(-3, 4):
try:
if (x+i < 0) or (y+i < 0):
row.append('s') # 's' stands for sentinel
else:
row.append(board.state[x+i][y+i])
except IndexError:
row.append('s') # 's' stands for sentinel
for i in range(4):
try:
if row[i : i + 4] == four_in_a_row:
return ((x -3 + i,y-3+i),( x +i,y+i))
except IndexError:
pass
row = []
for i in range(-3, 4):
try:
if (x+i < 0) or (y-i < 0):
row.append('s') # 's' stands for sentinel
else:
row.append(board.state[x+i][y-i])
except IndexError:
row.append('s') # 's' stands for sentinel
for i in range(4):
try:
if row[i : i + 4] == four_in_a_row:
return ((x -3 + i , y + 3 - i),( x +i , y - i))
except IndexError:
pass
return None
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