小甲鱼课后习题:乌龟吃小鱼
题目:

文字概述:
- 假设游戏场景为范围(x, y)为0<=x<=10,0<=y<=10
- 游戏生成1只乌龟和10条鱼
- 它们的移动方向均随机
- 乌龟的最大移动能力是2(Ta可以随机选择1还是2移动),鱼儿的最大移动能力是1
- 当移动到场景边缘,自动向反方向移动
- 乌龟初始化体力为100(上限)
- 乌龟每移动一次,体力消耗1
- 当乌龟和鱼坐标重叠,乌龟吃掉鱼,乌龟体力增加20
- 鱼暂不计算体力
- 当乌龟体力值为0(挂掉)或者鱼儿的数量为0游戏结束
解答:
- 小甲鱼解法:
import random as r
legal_x = [0, 10]
legal_y = [0, 10]
class Turtle:
def __init__(self):
# 初始体力
self.power = 100
# 初始位置随机
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[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
# 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() #生成10个鱼
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...")
- 我的解法:
import random as r
#firstly,creating an area
area_x = [1,10]
area_y = [1,10]
#先看小乌龟
class Tortoise:
def __init__(self,hp=100):
self.hp = hp
#randoming creat a initial site
self.t_x = r.randint(1,10)
self.t_y = r.randint(1,10)
def t_move(self):
# how t moving route
new_t_x = self.t_x + r.choice([2,1,-1,-2])
new_t_y = self.t_y + r.choice([2,1,-1,-2])
#you should to check whether t is in area
# x site
if new_t_x <= area_x[0]:
self.t_x = area_x[0] - (new_t_x - area_x[0])
elif new_t_x >= area_x[1]:
self.t_x = area_x[1] - (new_t_x - area_x[1])
else:
self.t_x = new_t_x
# y site
if new_t_y <= area_y[0]:
self.t_y = area_y[0] - (new_t_y - area_y[0])
elif new_t_y >= area_y[1]:
self.t_y = area_y[1] - (new_t_y - area_y[1])
else:
self.t_y = new_t_y
# hp cost
self.hp -= 1
#return t site
return(self.t_x,self.t_y)
def eat(self):
self.hp += 20
if self.hp > 100:
self.hp = 100
class Fish:
def __init__(self,):
#randoming creat a initial site
self.t_x = r.randint(1,10)
self.t_y = r.randint(1,10)
def move(self):
# how t moving route
new_t_x = self.t_x + r.choice([1,-1])
new_t_y = self.t_y + r.choice([1,-1])
#you should to check whether t is in area
# x site
if new_t_x <= area_x[0]:
self.t_x = area_x[0] - (new_t_x - area_x[0])
elif new_t_x >= area_x[1]:
self.t_x = area_x[1] - (new_t_x - area_x[1])
else:
self.t_x = new_t_x
# y site
if new_t_y <= area_y[0]:
self.t_y = area_y[0] - (new_t_y - area_y[0])
elif new_t_y >= area_y[1]:
self.t_y = area_y[1] - (new_t_y - area_y[1])
else:
self.t_y = new_t_y
return(self.t_x,self.t_y)
#对乌龟进行类的实例化
t = Tortoise()
fish = []
#对鱼进行类的实例化
for i in range(10):
_10fish = Fish() # 生成10条鱼
fish.append(_10fish)
#吃鱼
while True:
t_site = t.t_move()
for each_fish in fish[:]:
if each_fish.move() == t_site:
t.eat()
fish.remove(each_fish)
print('一条小鱼被吃了')
if len(fish) == 0:
print('鱼被吃完了!')
break
elif t.hp == 0:
print('小乌龟累死了!')
break
'''
这个程序算是入门题,我们要做一个抽象,
首先把乌龟的特征进行抽象:
1.初始化位置,hp(体力)
2.一个技巧就是运动的行为和运动的检测要分开写,不能混为一谈
3.将对象能实例化的都实例化,可以在调用的时候是为一种方法,平常心,认为是简单的程序
'''
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