def _update_map(self):
# Get new map from screen.
self._ale.getScreen(self.__screen)
self._map = GameMap(self.__screen.reshape(210, 160))
self._blank_map = GameMap.from_map(self._map.map.copy())
self._map.map[self._ms_pacman_position] = GameMapObjects.MS_PACMAN
if self._fruit.exists:
self._map.map[self._fruit.position] = GameMapObjects.FRUIT
for ghost in self._ghosts:
if ghost.state == Ghost.GOOD:
self._map.map[ghost.position] = GameMapObjects.GOOD_GHOST
elif ghost.state == Ghost.BAD:
self._map.map[ghost.position] = GameMapObjects.BAD_GHOST
self._sliced_map = SlicedGameMap(self._map, self._ms_pacman_position)
def get_next_state(game, action):
move = game.action_to_move(action)
new_pos = game.get_next_position(game.ms_pacman_position, move)
game_map = GameMap.from_map(game._blank_map.map.copy())
if game.fruit.exists:
game_map.map[game.fruit.position] = GameMapObjects.FRUIT
for ghost in game.ghosts:
new_ghost_position = game.get_next_position(ghost.position,
ghost.direction)
if (not 0 < new_ghost_position[0] < game_map.HEIGHT
or not 0 < new_ghost_position[1] < game_map.WIDTH
or ghost.position == new_pos):
if ghost.state == Ghost.GOOD:
game_map.map[ghost.position] = GameMapObjects.GOOD_GHOST
elif ghost.state == Ghost.BAD:
game_map.map[ghost.position] = GameMapObjects.BAD_GHOST
elif game_map.map[new_ghost_position] == GameMapObjects.WALL:
continue
elif ghost.state == Ghost.GOOD:
game_map.map[new_ghost_position] = GameMapObjects.GOOD_GHOST
elif ghost.state == Ghost.BAD:
game_map.map[new_ghost_position] = GameMapObjects.BAD_GHOST
return get_slice(game_map, new_pos, 2)