msvcrt 功能似乎无法在游戏中按预期工作答案

【问题标题】：msvcrt function does not seem to work as intended in gamemsvcrt 功能似乎无法在游戏中按预期工作
【发布时间】：2021-03-13 22:30:49
【问题描述】：

根据我的研究，msvcrt 函数应该允许您输入单个命令而无需按下“回车”。为什么它在我的游戏中不起作用？例如，如果我单击“w”，理论上该角色应该向北移动 1 个空格，而无需单击 Enter。游戏使用 input() 可以正常工作，但每次移动后您都需要单击 Enter

import os
import msvcrt


#map
dungeonMap = [["0","0","0","0","0","0","0","0","0"],
              ["0",".",".","0",".",".",".",".","0"],
              ["0",".",".",".",".",".",".","0","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0",".",".",".","0",".",".",".","0"],
              ["0",".","0","0",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0","0","0","0","0","0","0","0","0"]]

playerMap  = [["0","0","0","0","0","0","0","0","0"],
              ["0",".",".","0",".",".",".",".","0"],
              ["0",".",".",".",".",".",".","0","0"],
              ["0","S",".",".",".",".",".",".","0"],
              ["0",".",".",".","0",".",".",".","0"],
              ["0",".","0","0",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0",".",".",".",".",".",".",".","0"],
              ["0","0","0","0","0","0","0","0","0"]]


x = 1
y = 3

def displayMapAround(maps,x,y):
  for dy in (-1,0,1):
    print( maps[y+dy][x-1:x+2] )



#Displaying the map
def displayMap(maps):
    for y in range(0,9):
        print(maps[y])

#selecting a map
mapChoice = dungeonMap

displayMapAround(playerMap,x,y)

#initialising the players position
position = mapChoice[0][0]



print(mapChoice[y][x])
while position != "E":
    os.system('cls' if os.name == 'nt' else 'clear')
    displayMapAround(playerMap,x,y)
    displayMap(playerMap)
    previousX = x
    previousY = y
    playerMap[y][x] = "."
    print("W,S,D,A,MAP")
    movement = msvcrt.getch()
    movement=movement.upper()

    if movement == "W":
        y = y-1
        position = mapChoice[y][x]
        playerMap[y][x] = "S"
        

    if movement == "S":
        y = y+1
        position = mapChoice[y][x]
        playerMap[y][x] = "S"
        

    if movement == "D":
        x = x+1
        position = mapChoice[y][x]
        playerMap[y][x] = "S"
        

    if movement == "A":
        x = x-1
        position = mapChoice[y][x]
        playerMap[y][x] = "S"


    position = mapChoice[y][x]
    playerMap[y][x] = "S"
    
    if position == "0" or position == "1":
        print("You hit a wall, you stumble in the darkness back to your previous position...")
        playerMap[y][x] = "0"
        x = previousX
        y = previousY
        playerMap[y][x] = "S"``

【问题讨论】：

getch() 返回一个字节字符串，而不是 unicode 字符串，因此您需要将它返回的值转换为 1 — 这可以通过 movement = msvcrt.getch().decode() 轻松完成。

标签： python windows ascii game-engine msvcrt

【解决方案1】：

getch 是 documented 返回一个“字节字符串”，这意味着它永远不会与常规字符串进行比较，因此您应该直接将其与字节字符串进行比较：

    movement = msvcrt.getch()
    if movement in {b'w', b'W'}:

最好不要转换成大写字母，因为它会返回不可打印的字符，如果用户按下，尝试将 `b'\xe0`` 转换为大写字母是没有意义的向上。

【讨论】：