第37讲最后一题
import random as rlegal_x =
legal_y =
class Turtle:
def __init__(self):
# 初始体力
self.power = 100
# 初始位置随机
self.x = r.randint(legal_x, legal_x)
self.y = r.randint(legal_y, legal_y)
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()
new_y = self.y + r.choice()
# 检查移动后是否超出场景x轴边界
if new_x < legal_x:
self.x = legal_x - (new_x - legal_x)
elif new_x > legal_x:
self.x = legal_x - (new_x - legal_x)
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:
self.y = legal_y - (new_y - legal_y)
elif new_y > legal_y:
self.y = legal_y - (new_y - legal_y)
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, legal_x)
self.y = r.randint(legal_y, legal_y)
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()
new_y = self.y + r.choice()
# 检查移动后是否超出场景x轴边界
if new_x < legal_x:
self.x = legal_x - (new_x - legal_x)
elif new_x > legal_x:
self.x = legal_x - (new_x - legal_x)
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:
self.y = legal_y - (new_y - legal_y)
elif new_y > legal_y:
self.y = legal_y - (new_y - legal_y)
else:
self.y = new_y
# 返回移动后的新位置
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引用
# 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...")
在假设乌龟体力耗尽时,输入
if not turtle.power():
print("乌龟体力耗尽,挂掉了!")
break
就显示TypeError: 'int' object is not callable
想知道turtle.power 和turtle.power()有什么区别?
turtle.power表示的是一个变量吧,turtle.power()这个感觉像是在调用一个叫power的函数
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