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Bot.py
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Bot.py
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import random
import datetime
import copy
class Player11:
def __init__(self):
self.begin=0
self.timelimit = datetime.timedelta(seconds=14)
self.util ={}
self.arr= [0.2,1,2,5,20]
self.depthi=4
pass
def notflag(self,flag):
if flag=='o':
return 'x'
else:
return 'o'
def timer1(self,a):
if a - self.begin > self.timelimit:
return True
else:
return False
def countutility(self,board,flag,depth):
utility=0
for i in range(4):
for j in range(4):
if board.block_status[i][j] == flag:
utility+=20
if board.block_status[i][j] == self.notflag(flag):
utility-=20
if board.block_status[i][j] == '-':
temp = [[0 for y in range(4)] for x in range(4)]
for x in range(4):
for y in range(4):
temp[x][y]=board.board_status[4*i+x][4*j+y]
temp1 = [[board.board_status[(4*i+x)][(4*j+y)] for y in range(4) ] for x in range(4)]
utility += self.updateutility(temp,flag)
utility -= self.updateutility(temp,self.notflag(flag))
utility+= 10*self.updateutility(board.block_status,flag)-0.01*depth
utility-= 10*self.updateutility(board.block_status,self.notflag(flag))+0.01*depth
return utility
def updateutility(self,block,flag):
cpblock = tuple([ tuple(block[i]) for i in range(4)])
hrvalue=0
if (cpblock,flag) in self.util:
return self.util[cpblock, flag]
else:
topv=[(3,3),(0,3),(0,0),(2,2),(1,1),(2,1),(1,2),(3,0)]
lowv=[(1,3),(2,3),(0,1),(3,1),(0,2),(2,0),(3,2),(1,0)]
oflag = self.notflag(flag)
count=0
ocount=0
for i in range(4):
count=0
ocount=0
dvalue=0
tvalue=0
fvalue=0
for j in range(4):
if block[j][i] == flag:
count +=1
elif block[j][i] == oflag or block[j][i] == 'd':
ocount +=1
dvalue = 0
tvalue = 0
fvalue = 0
if ocount == 0:
if count == 2:
dvalue =1
elif count == 3:
tvalue =1
elif count == 4:
fvalue =1
hrvalue += dvalue* self.arr[2]+ tvalue * self.arr[3] + fvalue * self.arr[4]
count=0
ocount=0
dvalue=0
tvalue=0
fvalue=0
for j in range(4):
if block[i][j] == flag:
count +=1
elif block[i][j] == oflag or block[i][j] == 'd':
ocount +=1
dvalue = 0
tvalue = 0
fvalue = 0
if ocount == 0:
if count== 2:
dvalue =1
elif count == 3:
tvalue =1
elif count == 4:
fvalue =1
hrvalue += dvalue* self.arr[2]+ tvalue * self.arr[3] + fvalue * self.arr[4]
count=0
ocount=0
dvalue=0
tvalue=0
fvalue=0
for i in range(4):
if block[i][i] == flag:
count += 1
elif block[i][i] == oflag or block[i][i] == 'd':
ocount +=1
dvalue = 0
tvalue = 0
fvalue = 0
if ocount == 0:
if count == 2:
dvalue = 1
elif count == 3:
tvalue = 1
elif count ==4:
fvalue =1
hrvalue += dvalue* self.arr[2]+ tvalue * self.arr[3] + fvalue * self.arr[4]
count=0
ocount=0
dvalue=0
tvalue=0
fvalue=0
for i in range(4):
if block[i][3-i] == flag:
count += 1
elif block[i][3-i] == oflag or block[i][3-i] == 'd':
ocount +=1
dvalue = 0
tvalue = 0
fvalue = 0
if ocount == 0:
if count == 2:
dvalue = 1
elif count == 3:
tvalue = 1
elif count ==4:
fvalue =1
hrvalue += dvalue* self.arr[2]+ tvalue * self.arr[3] + fvalue * self.arr[4]
for val in topv:
if block[val[0]][val[1]] == flag:
hrvalue += self.arr[0]
for val in lowv:
if block[val[0]][val[1]] == flag:
hrvalue += self.arr[0]*0.5
self.util[cpblock,flag] = hrvalue
return hrvalue
def minimax(self,board,old_move,alpha,beta,maxim,flag,depthi,depth,initial):
if self.timer1(datetime.datetime.utcnow()):
return (0,(-1,-1))
else:
states = board.find_terminal_state()
if states[1] == 'WON':
if states[0] == flag:
return (555,old_move)
return(-555,old_move)
if depthi == depth:
value = self.countutility(board,flag,depth)
return (value,old_move)
cells = board.find_valid_move_cells(old_move)
if len(cells)==0:
value = self.countutility(board,flag,depth)
return (value,old_move)
random.shuffle(cells)
for cell in cells:
if maxim==1:
board.update(old_move,cell,flag)
u2=0
if board.block_status[cell[0]%4][cell[1]%4]!='-':
u2=-0.01
value = self.minimax(board,cell,alpha,beta,0,flag,depthi,depth+1,initial)
if self.timer1(datetime.datetime.utcnow()):
board.board_status[cell[0]][cell[1]] = '-'
board.block_status[cell[0]/4][cell[1]/4] = '-'
return (0,(-1,-1))
if value[0]+u2 > alpha:
alpha = value[0]+u2
initial = cell
board.board_status[cell[0]][cell[1]] = '-'
board.block_status[cell[0]/4][cell[1]/4] = '-'
else:
board.update(old_move,cell,self.notflag(flag))
u2=0
if board.block_status[cell[0]%4][cell[1]%4]!='-':
u2=0.01
value = self.minimax(board,cell,alpha,beta,1,flag,depthi,depth+1,initial)
if self.timer1(datetime.datetime.utcnow()):
board.board_status[cell[0]][cell[1]] = '-'
board.block_status[cell[0]/4][cell[1]/4] = '-'
return (0,(-1,-1))
if value[0]+u2 < beta:
beta = value[0]+u2
initial = cell
board.board_status[cell[0]][cell[1]] = '-'
board.block_status[cell[0]/4][cell[1]/4] = '-'
if alpha>=beta:
break
if maxim==1:
return (alpha,initial)
else:
return (beta,initial)
def move(self,board,old_move,flag):
self.timelimit = datetime.timedelta(seconds=14.5)
self.begin = datetime.datetime.utcnow()
self.depthi = 3
while not(self.timer1(datetime.datetime.utcnow())) and self.depthi<8:
optimal = self.minimax(board,old_move,-1000000000,1000000000,1,flag,self.depthi,0,(6,6))
if optimal[1]!=(-1,-1):
index = optimal[1]
self.depthi+=1
return index