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shenzhen-solitaire/shenzhen_solitaire/solver/board_actions.py
2020-03-24 14:45:48 +01:00

218 lines
7.9 KiB
Python

"""Contains actions that can be used on the board"""
from dataclasses import dataclass
from typing import List, Optional, Tuple
from .. import board
class Action:
"""Base class for a card move action on a solitaire board"""
_before_state: int = 0
_after_state: int = 0
def _apply(self, action_board: board.Board) -> None:
pass
def _undo(self, action_board: board.Board) -> None:
pass
def apply(self, action_board: board.Board) -> None:
"""Apply action to board"""
if __debug__:
self._before_state = action_board.state_identifier
self._apply(action_board)
if __debug__:
self._after_state = action_board.state_identifier
def undo(self, action_board: board.Board) -> None:
"""Undo action to board"""
assert action_board.state_identifier == self._after_state
self._undo(action_board)
assert action_board.state_identifier == self._before_state
def automatic(self) -> bool:
if isinstance(self, HuaKillAction):
return True
if isinstance(self, GoalAction) and self.obvious:
return True
return False
@dataclass
class GoalAction(Action):
"""Move card from field to goal"""
card: board.NumberCard
source_id: int
source_row_index: Optional[int]
source_position: board.Position
goal_id: int
obvious: bool
def _apply(self, action_board: board.Board) -> None:
"""Do action"""
assert action_board.getGoalId(self.card.suit) == self.goal_id
assert action_board.getGoal(self.card.suit) + 1 == self.card.number
if self.source_position == board.Position.Field:
assert action_board.field[self.source_id][-1] == self.card
action_board.field[self.source_id].pop()
action_board.incGoal(self.card.suit)
elif self.source_position == board.Position.Bunker:
assert action_board.bunker[self.source_id] == self.card
action_board.bunker[self.source_id] = None
action_board.incGoal(self.card.suit)
else:
raise RuntimeError("Unknown position")
def _undo(self, action_board: board.Board) -> None:
"""Undo action"""
assert action_board.getGoalId(self.card.suit) == self.goal_id
assert action_board.getGoal(self.card.suit) == self.card.number
if self.source_position == board.Position.Field:
action_board.field[self.source_id].append(self.card)
elif self.source_position == board.Position.Bunker:
assert action_board.bunker[self.source_id] is None
action_board.bunker[self.source_id] = self.card
else:
raise RuntimeError("Unknown position")
action_board.setGoal(self.card.suit, action_board.getGoal(self.card.suit) - 1)
@dataclass
class BunkerizeAction(Action):
"""Move card from bunker to field"""
card: board.Card
bunker_id: int
field_id: int
field_row_index: int
to_bunker: bool
def _move_from_bunker(self, action_board: board.Board) -> None:
assert action_board.bunker[self.bunker_id] == self.card
action_board.bunker[self.bunker_id] = None
action_board.field[self.field_id].append(self.card)
def _move_to_bunker(self, action_board: board.Board) -> None:
assert action_board.field[self.field_id][-1] == self.card
assert action_board.bunker[self.bunker_id] is None
action_board.bunker[self.bunker_id] = self.card
action_board.field[self.field_id].pop()
def _apply(self, action_board: board.Board) -> None:
"""Do action"""
if self.to_bunker:
self._move_to_bunker(action_board)
else:
self._move_from_bunker(action_board)
def _undo(self, action_board: board.Board) -> None:
"""Undo action"""
if self.to_bunker:
self._move_from_bunker(action_board)
else:
self._move_to_bunker(action_board)
@dataclass
class MoveAction(Action):
"""Moving a card from one field stack to another"""
cards: List[board.Card]
source_id: int
source_row_index: int
destination_id: int
destination_row_index: int
def _shift(self, action_board: board.Board, source: int, dest: int) -> None:
"""Shift a card from the field id 'source' to field id 'dest'"""
for stack_offset, card in enumerate(self.cards, start=-len(self.cards)):
assert action_board.getField()[source][stack_offset] == card
action_board.getField()[source] = action_board.getField()[source][: -len(self.cards)]
action_board.getField()[dest].extend(self.cards)
def _apply(self, action_board: board.Board) -> None:
"""Do action"""
if action_board.getField()[self.destination_id]:
dest_card = action_board.getField()[self.destination_id][-1]
if not all(isinstance(x, board.NumberCard) for x in self.cards):
raise AssertionError()
if not isinstance(dest_card, board.NumberCard):
raise AssertionError()
if not isinstance(self.cards[0], board.NumberCard):
raise AssertionError()
if dest_card.suit == self.cards[0].suit:
raise AssertionError()
if dest_card.number != self.cards[0].number + 1:
raise AssertionError()
self._shift(action_board, self.source_id, self.destination_id)
def _undo(self, action_board: board.Board) -> None:
"""Undo action"""
self._shift(action_board, self.destination_id, self.source_id)
@dataclass
class DragonKillAction(Action):
"""Removing four dragons from the top of the stacks to a bunker"""
dragon: board.SpecialCard
source_stacks: List[Tuple[board.Position, int]]
destination_bunker_id: int
def _apply(self, action_board: board.Board) -> None:
"""Do action"""
assert (
action_board.bunker[self.destination_bunker_id] is None
or action_board.bunker[self.destination_bunker_id] == self.dragon
)
assert len(self.source_stacks) == 4
for position, index in self.source_stacks:
if position == board.Position.Field:
assert action_board.field[index]
assert action_board.field[index][-1] == self.dragon
action_board.field[index].pop()
elif position == board.Position.Bunker:
assert action_board.bunker[index] == self.dragon
action_board.bunker[index] = None
else:
raise RuntimeError("Can only kill dragons in field and bunker")
action_board.bunker[self.destination_bunker_id] = (self.dragon, 4)
def _undo(self, action_board: board.Board) -> None:
"""Undo action"""
assert action_board.bunker[self.destination_bunker_id] == (self.dragon, 4)
assert len(self.source_stacks) == 4
action_board.bunker[self.destination_bunker_id] = None
for position, index in self.source_stacks:
if position == board.Position.Field:
action_board.field[index].append(self.dragon)
elif position == board.Position.Bunker:
action_board.bunker[index] = self.dragon
else:
raise RuntimeError("Can only kill dragons in field and bunker")
@dataclass
class HuaKillAction(Action):
"""Remove the flower card"""
source_field_id: int
source_field_row_index: int
def _apply(self, action_board: board.Board) -> None:
"""Do action"""
assert not action_board.flower_gone
assert action_board.field[self.source_field_id][-1] == board.SpecialCard.Hua
action_board.field[self.source_field_id].pop()
action_board.flower_gone = True
def _undo(self, action_board: board.Board) -> None:
"""Undo action"""
assert action_board.flower_gone
action_board.field[self.source_field_id].append(board.SpecialCard.Hua)
action_board.flower_gone = False