Question

我正在制作一个基于python 2.7文本的RPG，而且我的战斗功能运行不正常。这是我的代码：

def attack(self):
    print "A %r appears! It wants to fight!" % (self.name)
    while (player.health > 0) or (self.health > 0):
        player.health = player.health - ( ( randint(0,5) ) +  attack_multiplier(self.level) )
        print "%r strikes! Your health is down to %r" %(self.name, player.health)
        try:
            player.weapon = (raw_input("What do you attack with? >>").lower)
            if (player.inventory.get(player.weapon) > 0) and (player.health > 0) and (self.health > 0):
                if weapon_probability() == "critical hit":
                    self.health = self.health - (((randint(0,5))) +  (attack_multiplier(weapon_levels.get(player.weapon))) * 2)
                    print "Critical Hit!"
                elif weapon_probability() == "hit":
                    self.health = self.health - ((((randint(0,5))) +  (attack_multiplier(weapon_levels.get(player.weapon)))))
                    print "Hit!"
                elif weapon_probability() == "miss":
                    self.health = self.health
                    print "Miss"
                print "Enemy health down to %r!" % (self.health)
            elif player.health <= 0:
                print "Your health...it’s falling"
                break
            elif self.health <= 0:
                print "Enemy vanquished!"
                break
        except ValueError:
            print "You don't have that"

我看到的是：

'Bat' strikes! Your health is down to 95
What do you attack with? >>sword
'Bat' strikes! Your health is down to 91
What do you attack with? >>sword
'Bat' strikes! Your health is down to 87
What do you attack with? >>sword
'Bat' strikes! Your health is down to 85
What do you attack with? >>sword
'Bat' strikes! Your health is down to 82
What do you attack with? >>

这只是不断重复，player.health甚至不断陷入负面。我找不到错误。此函数是类的方法，player是另一个类的实例。

Answer 1

您正在存储方法，而不是存储小写的输入字符串：

player.weapon = (raw_input("What do you attack with? >>").lower)

因为你实际上并没有调用 str.lower()。您可能不会在str.lower中存储player.inventory方法，因此player.inventory.get(player.weapon)会返回None。

因为在Python 2中几乎所有东西都可以相对于其他对象进行排序，测试：

 player.inventory.get(player.weapon) > 0

始终是False。

调用该方法至少应解决该问题：

player.weapon = raw_input("What do you attack with? >>").lower()

而不是使用player.inventory.get()（返回默认设置并屏蔽您的问题），请使用player.inventory[player.weapon]。这会投出KeyError来表明用户不会有这个武器，所以调整你的异常处理程序来捕获它：

except KeyError:
    print "You don't have that"

Answer 2

在这一行：

 player.weapon = (raw_input("What do you attack with? >>").lower)

它应该是：

 player.weapon = (raw_input("What do you attack with? >>").lower())

否则您存储的是函数，而不是结果。 Python将所有内容视为对象

您可能也遇到问题：

while (player.health > 0) or (self.health > 0):

可能是：

while (player.health > 0) *and (self.health > 0):

Answer 3

while (player.health > 0) or (self.health > 0):

您可能需要将此片段替换为：

while (player.health > 0) and (self.health > 0):

功能运行不正常

3 个答案: