# -*- coding = utf-8 -*-
import random as r

legal_x = [0, 10]
legal_y = [0, 10]

class Turtle:
    def __init__(self):
        self.power = 100
        self.x = r.randint(legal_x[0], legal_x[1])
        self.y = r.randint(legal_y[0], legal_y[1])

    def move(self):
        # 随机计算方向并移动到新的位置(x, y)
        new_x = self.x + r.choice([1, 2, -1, -2])
        new_y = self.y + r.choice([1, 2, -1, -2])

        # 检查移动后是否超出场景x轴边界
        if new_x < legal_x[0]:
            self.x = legal_x[0] - (new_x - legal_x[0])
        elif new_x > legal_x[1]:
            self.x = legal_x[1] - (new_x - legal_x[1])
        else:
            self.x = new_x
        # 检查移动后是否超出场景y轴边界
        if new_y < legal_y[0]:
            self.y = legal_y[0] - (new_y - legal_y[0])
        elif new_y > legal_y[1]:
            self.y = legal_y[1] - (new_y - legal_y[1])
        else:
            self.y = new_y
        # 体力消耗
        self.power -= 1
        # 返回移动后的新位置
        return self.x, self.y

    def eat(self):
        self.power += 20
        if self.power > 100:
            self.power = 100

class Fish:
    def __init__(self):
        self.x = r.randint(legal_x[0], legal_x[1])
        self.y = r.randint(legal_y[0], legal_y[1])

    def move(self):
        # 随机计算方向并移动到新的位置(x, y)
        new_x = self.x + r.choice([1, -1])
        new_y = self.y + r.choice([1, -1])
        # 检查移动后是否超出场景x轴边界
        if new_x < legal_x[0]:
            self.x = legal_x[0] - (new_x - legal_x[0])
        elif new_x > legal_x[0]:
            self.x = legal_x[1] - (new_x - legal_x[1])
        else:
            self.x = new_x
        # 检查移动后是否超出场景y轴边界
        if new_y < legal_y[0]:
            self.y = legal_y[0] - (new_y - legal_y[0])
        elif new_y > legal_y[1]:
            self.y = legal_y[1] - (new_y - legal_y[1])
        else:
            self.y = new_y
        # 返回移动后的新位置
        return  self.x, self.y

if __name__ == "__main__":
    turtle = Turtle()
    fish = []
    for i in range(10):
        new_fish = Fish()
        fish.append(new_fish)

    while True:
        if not len(fish):
            print("鱼儿都吃完了，游戏结束！")
            break
        if not turtle.power:
            print("乌龟体力耗尽，挂掉了！")
            break

        pos = turtle.move()
        # 在迭代器中删除列表元素是非常危险的，经常会出现意想不到的问题，因为迭代器是直接引用列表的数据进行行用
        # 这里我们把列表拷贝给迭代器，然后对原列表进行删除操作就不会有问题了
        for each_fish in fish[:]:
            if each_fish.move() == pos:
                #鱼儿被吃掉了
                turtle.eat()
                fish.remove(each_fish)
                print("有一条鱼儿被吃掉了")