上课时如何拿走生命值？

Question

I'm working on a game in python and I can't figure out how to take away health once attack function has taken place. I can run the program and the attack function works fine, it shows a random integer between 1 and 50 but doesn't actually take away health from castlehealth = 100

Underneath print("You attacked for " + str(self.attack)) I left the next line blank because I don't know what to type in, I tried a lot of different things and just can't get the attack to take away from castlehealth .

Here is my code:

import os
import time
from random import randint

class GameActions:
    def __init__(self):
        castlehealth = 100
        self.castlehealth = castlehealth
    def health(self):
        print("Castle health is: " + str(self.castlehealth))
        print()
    def attack(self):
        attack = randint(0, 50)
        self.attack = attack
        print("You attacked for " + str(self.attack))

def game():
    while True:
        game_actions = GameActions()
        print("What do you want to do?")
        print()
        print("attack, view hp")
        ans = input()
        if ans == "hp":
            game_actions.health()
        if ans == "attack":
            game_actions.attack()

Answer 1

您需要以下内容：

self.castlehealth -= attack

Answer 2

Try something like self.castlehealth -= attack . I also fixed some potential indentation issues for you.

Your full code sample could look this this:

import os
import time
from random import randint

class GameActions:
    def __init__(self):
        castlehealth = 100
        self.castlehealth = castlehealth
    def health(self):
        print("Castle health is: " + str(self.castlehealth))
        print()
    def attack(self):
        attack = randint(0, 50)
        self.attack = attack
        print("You attacked for " + str(self.attack))
        self.castlehealth -= attack

def game():
    while True:
        game_actions = GameActions()
        print("What do you want to do?")
        print()
        print("attack, view hp")
        ans = input()
        if ans == "hp":
           game_actions.health()
        if ans == "attack":
           game_actions.attack()

Explanation: self.castlehealth is an instance variable of your GameActions class. The function GameActions.attack() creates a new attack variable as a random integer and then subtracts that value from the instance variable self.castlehealth of the GameActions class. Now self.castlehealth will be the updated value. Consider also tracking the various attacks and resulting healths in a data structure, since every time you have a new attack self.castlehealth and self.attack will change values and you will lose the ability to access the previous values.