Question

有一个while循环使用raw_input关键字不断允许用户输入，然后该输入被传递给一个名为commands（）的函数，然后该函数将输入路由到用户指定的命令。在这种情况下，每当我在代码中调用函数移动时，它会使用户按下函数输入并且在用户确实按Enter键之前不会处理数据。

此外，似乎程序将函数运动（）中的部分代码返回到commands（）函数，因此给出了以下故障：

target leo2
Successful lock on Leo2
launch

Your mobile suit shifts as you begin moving towards Leo2 at coordinates [300, 100, 100]Invalid command
Type 'commands' for a list of valid commands

Distance from suit is: 200

正如您所看到的，在函数的中间，它试图从主模块运行主whileloop，但它然后返回到中间运行函数。为什么会发生这种情况，我该如何解决？

我的代码：

Gundam2.py

import math

class Mobilesuits:
    #class global variables/methods here
    instances = [] #grid cords here
    names=[]



    def __init__(self,armor,speed,name,description,cockpit_description,\
                 radar_range, coordinates):
        Mobilesuits.instances.append(self)
        Mobilesuits.names.append(name)
        self.armor=armor
        self.speed=speed
        self.name=name
        self.description=description
        self.cockpit_description=cockpit_description
        self.radar_range=radar_range
        self.coordinates=coordinates

        #Intrinsically links mobile suits objects to their names.
        #I want to be able to access each object directly through the name

    def update_names(self): 
        Mobilesuit_names_instances_dictionary={}
        for i in range(len(Mobilesuits.instances)):
            Mobilesuit_names_instances_dictionary[Mobilesuits.names[i]] =Mobilesuits.instances[i]
        return Mobilesuit_names_instances_dictionary








    def can_detect(self, other):
        for own_coord, other_coord in zip(self.coordinates, other.coordinates):
            if abs(own_coord - other_coord) > self.radar_range:
                return False
            return True

    def radar(self):
        for other in Mobilesuits.instances:
            if other is not self  and self.can_detect(other):
                print "%s detected at %s" % (other.description, other.coordinates)

    def movement(self, target, official_target, currentmobilesuit):
        print("Your mobile suit shifts as you begin moving towards %s at coordinates %s" %(target,official_target.coordinates))

        distance = (currentmobilesuit.coordinates[0] - official_target.coordinates[0],\
                          currentmobilesuit.coordinates[1] - official_target.coordinates[1], \
                          currentmobilesuit.coordinates[2]-official_target.coordinates[2])

        calculation=0
        for i in distance:
            calculation += abs(i)
        print("Distance from suit is: %s" % (calculation))




        #Make speed calculation based on distance away and speed of suit
        #Errors:
        #target without a suit gives error

maingundam.py

from Gundam2 import Mobilesuits
import thread
import time

#Main Variable/Object declarations:

Leo1=Mobilesuits(100,100,"Leo1","leo desc","dockpit desc",100,[100,100,100])
Leo2=Mobilesuits(100,100,"Leo2","leo desc","dockpit desc",100,[300,100,100])
Leo3=Mobilesuits(100,100,"Leo3","leo desc","dockpit desc",100,[100,150,100])
currentmobilesuit=Leo1
mobile_suit_names_list=currentmobilesuit.update_names()

#Main Function declarations               
def commands(user_input,currentmobilesuit, mobile_suit_names_list):

    #radar
    if user_input == "radar":
        currentmobilesuit.radar()

    #Commands overview    
    elif user_input == "commands":
        print("Command list:\nradar\ntarget (object)")

    #Target objects
    elif user_input.startswith("target"):
        try:
            global target
            target=user_input.split()[1].title()
            if mobile_suit_names_list[target]:
                global official_target
                official_target=mobile_suit_names_list[target]
                print("Successful lock on %s" % (target))
        except:
            print("space object '%s' not detected" %(target))


    elif user_input=="launch":
       # try:
        if official_target:
            thread.start_new_thread(currentmobilesuit.movement, (target, official_target, currentmobilesuit))
       # except:
        #    print("No target is selected")

     #command not found
    else:
        print("Invalid command\nType 'commands' for a list of valid commands")

def active_delay(action, delay):
    time.sleep(delay)
    action()





#Main execution: paused
while True:
    mobile_suit_names_list=currentmobilesuit.update_names()
    commands(raw_input(),currentmobilesuit,mobile_suit_names_list)

Answer 1

您的第二个问题是，如果您的用户只是点击返回，则raw_input的返回值为空字符串""，这是不由command()处理。您可以通过添加以下行来解决此问题：

elif user_input == "":
    pass

你的第一个问题是raw_input的运作方式;它始终等待用户输入，然后是返回，并且不设计用于连续控制输入。这很难修复。您可能最好使用专为此类事物设计的库（连续键盘控制），如pygame。

程序暂停并等待用户在完成功能之前返回返回

1 个答案: