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Connect 4
##Brian Chesley, Connect 4
def run():
board = []
for i in range(0,6):
board.append([0]*7)
for row in board:
print row
turn = 1
p1_wins = False
p2_wins = False
while p1_wins != True and p2_wins != True: #main game loop
make_move(board,turn,player_move(board,turn)) #makes moves
if isWinner(board) == True: #checks for winner
if turn == 1:
print "Player 1 wins!"
p1_wins = True
else:
print "Player 2 wins!"
p2_wins = True
if tie(board) == True: #handles a tie game
print "Tie Game!"
p1_wins = True
if turn == 1: ##switches turn
turn = 2
else:
turn = 1
for row in board: ##prints board
print row
def player_move(board,turn):
try:
player_column = input("what column would you like player %d? " % (turn))
while not (1 <= player_column <= 7):
player_column = input("Please enter a valid column # between 1 and 7 ")
while board[0][player_column -1] != 0:
player_column = input("This column is full. Enter a different one ")
break
except NameError: ##Still fails when user inputs a space
print "Please enter a valid column # between 1 and 7 "
return player_column
def make_move(board,turn,move):
for row in reversed(range(0,6)):
if board[row][move-1] == 0:
if turn == 1:
board[row][move-1] = 1
break
else:
board[row][move-1] = 2
break
else:
pass
def isWinner(board):
row_check = -1
new_row = None
last = -10
for row in range(0,6): ##check to find a horizontal win
for column in range(0,7):
if row != row_check:
row_check = row
new_row = True
else:
new_row = False
if board[row][column] != last or new_row == True:
last = board[row][column]
length = 1
else:
length = length + 1
if length == 4:
if board[row][column] == 1:
return True
elif board[row][column] == 2:
p2_wins = True
print "player 2 wins"
return p2_wins
col_check = -1
new_column = None
for column in range(0,7): ##check for a win vertically
for row in range(0,6):
if column != col_check: ##to make sure columns don't carry over
col_check = column
new_column = True
else:
new_column = False
if board[row][column] != last or new_column == True:
last = board[row][column]
length = 1
elif board[row][column] == last and new_column == False:
length = length + 1
if length == 4:
if board[row][column] == 1:
return True
elif board[row][column] == 2:
return True
try:
for row in range(0,4): ## check for a diagonal win. \
for column in range(0,4):
if board[row][column] == board[row+1][column+1] == board[row+2][column+2] == board[row+3][column+3]:
if board[row][column] == 1:
return True
elif board[row][column] == 2:
return True
for row in range(3,6): ## check for a diagonal win. /
for column in range(0,4):
if board[row][column] == board[row-1][column+1] == board[row-2][column+2] == board[row-3][column+3]:
if board[row][column] == 1:
return True
elif board[row][column] == 2:
return True
except IndexError:
pass
def tie(board):
for row in range(6):
for column in range(7):
if board[row][column] == 0:
return False
return True
print run()
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