import random as r

class Turtle(object):

    def __init__(self):

        self.power = 100

        # 初始化乌龟的位置

        self.x = r.randint(0,10)

        self.y = r.randint(0,10)

    def move(self):

        new_x = r.choice([1,2,-1,-2]) + self.x

        new_y = r.choice([1,2,-1,-2]) + self.y

        # 判断 乌龟的移动是否超出了边界

        if new_x < 0:

            self.x = 0 - (new_x - 0)

        elif new_x > 10:

            self.x = 10 - (new_x - 10)

        else:

            self.x = new_x

        if new_y < 0:

            self.y = 0 - (new_y -0)

        elif new_y > 10:

            self.y = 10 - (new_y - 10)

        else:

            self.y = new_y

        self.power -= 1

        return (self.x,self.y)

    def eat(self):

        self.power += 20

        if self.power >= 100:

            self.power = 100

class Fish(object):

    def __init__(self):

        self.x = r.randint(0,10)

        self.y = r.randint(0,10)

    def move(self):

        new_x = self.x + r.choice([1,-1])

        new_y = self.y + r.choice([1,-1])

        if new_x < 0:

            self.x = 0 - (new_x - 0)

        elif new_x > 10:

            self.x = 10 - (new_x - 10)

        else:

            self.x = new_x

        if new_y < 0:

            self.y = 0 -(new_y - 0)

        elif new_y > 10:

            self.y = 10 - (new_y - 10)

        else:

            self.y = new_y

        return (self.x,self.y)

turtle = Turtle()

fish = []

for i in range(10):

    new_fish = Fish()

    fish.append(new_fish)

while True:

    if not len(fish):

        print("鱼被吃完了，游戏结束")

        break

    if not turtle.power:

        print("乌龟体力被耗尽了，游戏结束")

        break

    pos = turtle.move()

    # 在迭代中做列表的删除元素是非常危险的，经常会出现一些意想不到的问题，因为迭代器是直接引用列表元素的数据做的操作

    # 所以 我们这里把列表拷贝一份传给迭代器，然后再对原列表做操作

    for each_fish in fish[:]:

        if  each_fish.move() == pos:

            turtle.eat()

            fish.remove(each_fish)

            print("有一条鱼被吃掉了")