squirrel-battle/dungeonbattle/entities/monsters.py

from random import choice

from .player import Player
from ..interfaces import FightingEntity, Map


class Monster(FightingEntity):
    def act(self, m: Map) -> None:
        """
        By default, a monster will move randomly where it is possible
        And if a player is close to the monster, the monster run on the player.
        """
        target = None
        for entity in m.entities:
            if self.distance_squared(entity) <= 25 and \
                    isinstance(entity, Player):
                target = entity
                break

        if target:
            # Move to target player
            y, x = self.vector(target)
            if abs(y) > abs(x):  # Move vertically
                if y > 0:
                    self.move_down()
                else:
                    self.move_up()
            else:  # Move horizontally
                if x > 0:
                    self.move_right()
                else:
                    self.move_left()
            if self.distance_squared(target) <= 1:
                self.hit(target)
        else:
            for _ in range(100):
                if choice([self.move_up, self.move_down,
                          self.move_left, self.move_right])():
                    break


class Hedgehog(Monster):
    name = "hedgehog"
    maxhealth = 10
    strength = 3