37讲 乌龟和鱼
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...")
代码中 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)
的意思是不是: ifnew_x < 0:
self.x = 0 - (new_x - 0)
eslf new_x > 10:
self.x = 10 - (new_x - 10)
求大神帮忙!!!!!!!!!!
是的啊。只是这样写更容易理解编程的过程。 好滴谢谢!
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