# asteroid.py
# ------------
# By MWC Contributors
# This module defines an asteroid agent class.

class Asteroid:
    character = 'O'

    def __init__(self, position, speed=2):
        # speed = how often it moves (1 = every turn, 2 = every 2 turns, etc.)
        self.position = position
        self.speed = speed

    def play_turn(self, game):
        width, height = game.board_size

        # Only move on some turns (for variable speed)
        if game.turn_number % self.speed != 0:
            return

        x, y = self.position

        # If at bottom, remove asteroid
        if y == height - 1:
            game.remove_agent(self)
        else:
            ship = game.get_agent_by_name('ship')
            new_position = (x, y + 1)

            # If we hit the ship, damage it and remove this asteroid
            if new_position == ship.position:
                if hasattr(ship, "take_damage"):
                    ship.take_damage(game)
                game.remove_agent(self)
            else:
                self.position = new_position