模拟用于控制游戏的 Python 按键 [英] Simulate Python keypresses for controlling a game

问题描述

我正在尝试使用 Kinect 和 Python 控制游戏(我的两个测试游戏是半条命 2 和 Minecraft).除了一件事，一切都有效.游戏将响应模拟鼠标事件和模拟鼠标移动(鼠标事件通过 ctypes 完成，鼠标移动使用 pywin32 完成).然而，问题是游戏忽略了模拟按键.他们都会在聊天窗口 (Minecraft) 或开发者控制台 (Half Life 2) 中选择模拟按键，但不会在玩实际游戏时.

I'm trying to control a game (my two test games are Half Life 2 and Minecraft) using my Kinect and Python. Everything works except for one thing. The game will respond to simulated mouse events and simulated mouse movement (mouse events are done via ctypes and mouse movement is done using pywin32). The problem however is that the games ignore simulated keypresses. Both of them will pick up the simulated keypresses in either the chat window (Minecraft) or the developer console (Half Life 2) but not while playing the actual game.

我尝试了几种发送按键的方法:

I've tried several ways of sending the keypresses:

import win32com.client as client
wsh = client.Dispatch('WScript.Shell')
wsh.AppActivate(gameName)
wsh.SendKeys(key)

和:

import win32api
win32api.keybd_event(keyHexCode, 0, 0)

和:

import ctypes
import time

SendInput = ctypes.windll.user32.SendInput

# C struct redefinitions 
PUL = ctypes.POINTER(ctypes.c_ulong)
class KeyBdInput(ctypes.Structure):
    _fields_ = [("wVk", ctypes.c_ushort),
                ("wScan", ctypes.c_ushort),
                ("dwFlags", ctypes.c_ulong),
                ("time", ctypes.c_ulong),
                ("dwExtraInfo", PUL)]

class HardwareInput(ctypes.Structure):
    _fields_ = [("uMsg", ctypes.c_ulong),
                ("wParamL", ctypes.c_short),
                ("wParamH", ctypes.c_ushort)]

class MouseInput(ctypes.Structure):
    _fields_ = [("dx", ctypes.c_long),
                ("dy", ctypes.c_long),
                ("mouseData", ctypes.c_ulong),
                ("dwFlags", ctypes.c_ulong),
                ("time",ctypes.c_ulong),
                ("dwExtraInfo", PUL)]

class Input_I(ctypes.Union):
    _fields_ = [("ki", KeyBdInput),
                 ("mi", MouseInput),
                 ("hi", HardwareInput)]

class Input(ctypes.Structure):
    _fields_ = [("type", ctypes.c_ulong),
                ("ii", Input_I)]

# Actuals Functions

def PressKey(hexKeyCode):

    extra = ctypes.c_ulong(0)
    ii_ = Input_I()
    ii_.ki = KeyBdInput( hexKeyCode, 0x48, 0, 0, ctypes.pointer(extra) )
    x = Input( ctypes.c_ulong(1), ii_ )
    ctypes.windll.user32.SendInput(1, ctypes.pointer(x), ctypes.sizeof(x))

def ReleaseKey(hexKeyCode):

    extra = ctypes.c_ulong(0)
    ii_ = Input_I()
    ii_.ki = KeyBdInput( hexKeyCode, 0x48, 0x0002, 0, ctypes.pointer(extra) )
    x = Input( ctypes.c_ulong(1), ii_ )
    ctypes.windll.user32.SendInput(1, ctypes.pointer(x), ctypes.sizeof(x))

我应该指出最后一个中的代码不是我的，它与 Stack Overflow 上的另一个问题无关.

I should point out the code in the last one isn't mine, it's off another question here on Stack Overflow.

有谁知道为什么这些都不起作用以及正确的方法是什么?

Does anyone know why none of these work and what the correct way to do this is?

推荐答案

我在尝试模拟半条命 2 中的按键时遇到了同样的问题.正如 Robin 所说，解决方案是使用 ScanCodes 而不是 VKs.

I just had the same problem trying to simulate keypresses in Half-Life 2. As Robin said, the solution is to use ScanCodes instead of VKs.

我编辑了您的上一个代码示例，以便它使用 ScanCode.我用半条命 2 试过了，效果很好:

I edited your last code example such that it uses ScanCodes. I tried it with Half-Life 2 and it works just fine:

import ctypes
import time

SendInput = ctypes.windll.user32.SendInput

# C struct redefinitions 
PUL = ctypes.POINTER(ctypes.c_ulong)
class KeyBdInput(ctypes.Structure):
    _fields_ = [("wVk", ctypes.c_ushort),
                ("wScan", ctypes.c_ushort),
                ("dwFlags", ctypes.c_ulong),
                ("time", ctypes.c_ulong),
                ("dwExtraInfo", PUL)]

class HardwareInput(ctypes.Structure):
    _fields_ = [("uMsg", ctypes.c_ulong),
                ("wParamL", ctypes.c_short),
                ("wParamH", ctypes.c_ushort)]

class MouseInput(ctypes.Structure):
    _fields_ = [("dx", ctypes.c_long),
                ("dy", ctypes.c_long),
                ("mouseData", ctypes.c_ulong),
                ("dwFlags", ctypes.c_ulong),
                ("time",ctypes.c_ulong),
                ("dwExtraInfo", PUL)]

class Input_I(ctypes.Union):
    _fields_ = [("ki", KeyBdInput),
                 ("mi", MouseInput),
                 ("hi", HardwareInput)]

class Input(ctypes.Structure):
    _fields_ = [("type", ctypes.c_ulong),
                ("ii", Input_I)]

# Actuals Functions

def PressKey(hexKeyCode):
    extra = ctypes.c_ulong(0)
    ii_ = Input_I()
    ii_.ki = KeyBdInput( 0, hexKeyCode, 0x0008, 0, ctypes.pointer(extra) )
    x = Input( ctypes.c_ulong(1), ii_ )
    ctypes.windll.user32.SendInput(1, ctypes.pointer(x), ctypes.sizeof(x))

def ReleaseKey(hexKeyCode):
    extra = ctypes.c_ulong(0)
    ii_ = Input_I()
    ii_.ki = KeyBdInput( 0, hexKeyCode, 0x0008 | 0x0002, 0, ctypes.pointer(extra) )
    x = Input( ctypes.c_ulong(1), ii_ )
    ctypes.windll.user32.SendInput(1, ctypes.pointer(x), ctypes.sizeof(x))

# directx scan codes http://www.gamespp.com/directx/directInputKeyboardScanCodes.html
while (True):
    PressKey(0x11)
    time.sleep(1)
    ReleaseKey(0x11)
    time.sleep(1)

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