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game.py
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game.py
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import numpy as np
import logging
class Game:
def __init__(self):
self.currentPlayer = 1
self.gameState = GameState(np.array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], dtype=np.int), 1)
self.actionSpace = np.array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], dtype=np.int)
self.pieces = {'1':'X', '0': '-', '-1':'O'}
self.grid_shape = (6,7)
self.input_shape = (2,6,7)
self.name = 'connect4'
self.state_size = len(self.gameState.binary)
self.action_size = len(self.actionSpace)
def reset(self):
self.gameState = GameState(np.array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], dtype=np.int), 1)
self.currentPlayer = 1
return self.gameState
def step(self, action):
next_state, value, done = self.gameState.takeAction(action)
self.gameState = next_state
self.currentPlayer = -self.currentPlayer
info = None
return ((next_state, value, done, info))
def identities(self, state, actionValues):
identities = [(state,actionValues)]
currentBoard = state.board
currentAV = actionValues
currentBoard = np.array([
currentBoard[6], currentBoard[5],currentBoard[4], currentBoard[3], currentBoard[2], currentBoard[1], currentBoard[0]
, currentBoard[13], currentBoard[12],currentBoard[11], currentBoard[10], currentBoard[9], currentBoard[8], currentBoard[7]
, currentBoard[20], currentBoard[19],currentBoard[18], currentBoard[17], currentBoard[16], currentBoard[15], currentBoard[14]
, currentBoard[27], currentBoard[26],currentBoard[25], currentBoard[24], currentBoard[23], currentBoard[22], currentBoard[21]
, currentBoard[34], currentBoard[33],currentBoard[32], currentBoard[31], currentBoard[30], currentBoard[29], currentBoard[28]
, currentBoard[41], currentBoard[40],currentBoard[39], currentBoard[38], currentBoard[37], currentBoard[36], currentBoard[35]
])
currentAV = np.array([
currentAV[6], currentAV[5],currentAV[4], currentAV[3], currentAV[2], currentAV[1], currentAV[0]
, currentAV[13], currentAV[12],currentAV[11], currentAV[10], currentAV[9], currentAV[8], currentAV[7]
, currentAV[20], currentAV[19],currentAV[18], currentAV[17], currentAV[16], currentAV[15], currentAV[14]
, currentAV[27], currentAV[26],currentAV[25], currentAV[24], currentAV[23], currentAV[22], currentAV[21]
, currentAV[34], currentAV[33],currentAV[32], currentAV[31], currentAV[30], currentAV[29], currentAV[28]
, currentAV[41], currentAV[40],currentAV[39], currentAV[38], currentAV[37], currentAV[36], currentAV[35]
])
identities.append((GameState(currentBoard, state.playerTurn), currentAV))
return identities
class GameState():
def __init__(self, board, playerTurn):
self.board = board
self.pieces = {'1':'X', '0': '-', '-1':'O'}
self.winners = [
[0,1,2,3],
[1,2,3,4],
[2,3,4,5],
[3,4,5,6],
[7,8,9,10],
[8,9,10,11],
[9,10,11,12],
[10,11,12,13],
[14,15,16,17],
[15,16,17,18],
[16,17,18,19],
[17,18,19,20],
[21,22,23,24],
[22,23,24,25],
[23,24,25,26],
[24,25,26,27],
[28,29,30,31],
[29,30,31,32],
[30,31,32,33],
[31,32,33,34],
[35,36,37,38],
[36,37,38,39],
[37,38,39,40],
[38,39,40,41],
[0,7,14,21],
[7,14,21,28],
[14,21,28,35],
[1,8,15,22],
[8,15,22,29],
[15,22,29,36],
[2,9,16,23],
[9,16,23,30],
[16,23,30,37],
[3,10,17,24],
[10,17,24,31],
[17,24,31,38],
[4,11,18,25],
[11,18,25,32],
[18,25,32,39],
[5,12,19,26],
[12,19,26,33],
[19,26,33,40],
[6,13,20,27],
[13,20,27,34],
[20,27,34,41],
[3,9,15,21],
[4,10,16,22],
[10,16,22,28],
[5,11,17,23],
[11,17,23,29],
[17,23,29,35],
[6,12,18,24],
[12,18,24,30],
[18,24,30,36],
[13,19,25,31],
[19,25,31,37],
[20,26,32,38],
[3,11,19,27],
[2,10,18,26],
[10,18,26,34],
[1,9,17,25],
[9,17,25,33],
[17,25,33,41],
[0,8,16,24],
[8,16,24,32],
[16,24,32,40],
[7,15,23,31],
[15,23,31,39],
[14,22,30,38],
]
self.playerTurn = playerTurn
self.binary = self._binary()
self.id = self._convertStateToId()
self.allowedActions = self._allowedActions()
self.isEndGame = self._checkForEndGame()
self.value = self._getValue()
self.score = self._getScore()
def _allowedActions(self):
allowed = []
for i in range(len(self.board)):
if i >= len(self.board) - 7:
if self.board[i]==0:
allowed.append(i)
else:
if self.board[i] == 0 and self.board[i+7] != 0:
allowed.append(i)
return allowed
def _binary(self):
currentplayer_position = np.zeros(len(self.board), dtype=np.int)
currentplayer_position[self.board==self.playerTurn] = 1
other_position = np.zeros(len(self.board), dtype=np.int)
other_position[self.board==-self.playerTurn] = 1
position = np.append(currentplayer_position,other_position)
return (position)
def _convertStateToId(self):
player1_position = np.zeros(len(self.board), dtype=np.int)
player1_position[self.board==1] = 1
other_position = np.zeros(len(self.board), dtype=np.int)
other_position[self.board==-1] = 1
position = np.append(player1_position,other_position)
id = ''.join(map(str,position))
return id
def _checkForEndGame(self):
if np.count_nonzero(self.board) == 42:
return 1
for x,y,z,a in self.winners:
if (self.board[x] + self.board[y] + self.board[z] + self.board[a] == 4 * -self.playerTurn):
return 1
return 0
def _getValue(self):
# This is the value of the state for the current player
# i.e. if the previous player played a winning move, you lose
for x,y,z,a in self.winners:
if (self.board[x] + self.board[y] + self.board[z] + self.board[a] == 4 * -self.playerTurn):
return (-1, -1, 1)
return (0, 0, 0)
def _getScore(self):
tmp = self.value
return (tmp[1], tmp[2])
def takeAction(self, action):
newBoard = np.array(self.board)
newBoard[action]=self.playerTurn
newState = GameState(newBoard, -self.playerTurn)
value = 0
done = 0
if newState.isEndGame:
value = newState.value[0]
done = 1
return (newState, value, done)
def render(self, logger):
for r in range(6):
logger.info([self.pieces[str(x)] for x in self.board[7*r : (7*r + 7)]])
logger.info('--------------')