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"""Imago GTP engine"""
from imago.data.enums import DecisionAlgorithms
from imago.engine.createDecisionAlgorithm import create as createDA
from imago.gameLogic.gameState import GameState
DEF_SIZE = 9
DEF_KOMI = 5.5
DEF_ALGORITHM = DecisionAlgorithms.KERAS
class GameEngine:
"""Plays the game of Go."""
def __init__(self, decisionAlgorithmId = DEF_ALGORITHM):
self.komi = DEF_KOMI
self.gameState = GameState(DEF_SIZE)
self.daId = decisionAlgorithmId
self.da = createDA(self.daId, self.gameState.lastMove)
def setBoardsize(self, newSize):
"""Changes the size of the board.
Board state, number of stones and move history become arbitrary.
It is wise to call clear_board after this command.
"""
self.gameState = GameState(newSize)
self.da = createDA(self.daId, self.gameState.lastMove)
def clearBoard(self):
"""The board is cleared, the number of captured stones reset to zero and the move
history reset to empty.
"""
self.gameState.clearBoard()
self.da.clearBoard()
def setKomi(self, komi):
"""Sets a new value of komi."""
self.komi = komi
def setFixedHandicap(self, stones):
"""Sets handicap stones in fixed vertices."""
if stones < 1 or stones > 9:
raise Exception("Wrong number of handicap stones")
# TODO: Set handicap stones
return [[0,0], [0,1]]
def play(self, color, vertex):
"""Plays in the vertex passed as argument"""
if vertex == "pass":
self.gameState.passForPlayer(color)
self.da.forceNextMove(vertex)
return
row = vertex[0]
col = vertex[1]
self.gameState.playMoveForPlayer(row, col, color)
self.da.forceNextMove(vertex)
def genmove(self, color):
"""Returns a list representing coordinates of the board in the form (row, col)."""
coords = self.da.pickMove()
self.play(color, coords)
return coords
def undo(self):
"""The board configuration and number of captured stones are reset to the state
before the last move, which is removed from the move history.
"""
self.gameState.undo()
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