鼠标/键盘映射程序操纵杆

Question

我一直在做一个项目，把操纵杆(在我的例子中是Logitech极限3D)映射到鼠标和键盘上，这样我就可以在不支持游戏的网络游戏中使用它了。我的设计目标是：

1. 灵活性-我希望能够修改这个几乎任何组合的操纵杆/游戏垫到键盘/鼠标很容易。
2. 可读性-我希望能够发表这个，以便其他人可以使用它没有太多的麻烦。

这是我的代码：

import pygame
from pygame.locals import *
import ctypes
import math

def main():
   print('Python Slither controller is ready.')
   pygame.init()
   clock = pygame.time.Clock()
   joysticks = []
   for i in range(0, pygame.joystick.get_count()):
      joysticks.append(pygame.joystick.Joystick(i))
      joysticks[-1].init()

   while 1:
      clock.tick(60)

      updateData(pygame.joystick.Joystick(0))
      doActions()

      for event in pygame.event.get():
         if event.type == QUIT:
             print ("Received event 'Quit', exiting.")
             return


controls = {'trigger': 0, 
            'x-axis': 0,
            'y-axis': 0,
            'z-axis': 0,
            'hat-x': 0,
            'hat-y': 0,
            'slider': 0,
            'button-2': 0,
            'button-3': 0,
            'button-4': 0,
            'button-5': 0,
            'button-6': 0,
            'button-7': 0,
            'button-8': 0,
            'button-9': 0,
            'button-10': 0,
            'button-11': 0,
            'button-12': 0}

old_controls = controls.copy()

def updateData(joystick):
    global old_controls
    old_controls = controls.copy()

    controls['trigger'] = joystick.get_button(0)
    for i in range(1, 12):
        controls['button-'+str(i+1)] = joystick.get_button(i)
    controls['slider'] = joystick.get_axis(2)
    controls['x-axis'] = joystick.get_axis(0)
    controls['y-axis'] = joystick.get_axis(1)
    controls['z-axis'] = joystick.get_axis(3)
    controls['hat-x'] = joystick.get_hat(0)[0]
    controls['hat-y'] = joystick.get_hat(0)[1]


######################################################
######################################################
######################################################


def keyAction(keyChar):
    return (lambda old, new:
        keyEvent(bool(new), keyChar))

def mouseMoveAction():
    pass

def mouseScrollAction(scale):
    return (lambda old, new: 
        mouseScroll(int((old-new)*scale)))

def mousePressAction():
    return (lambda old, new:
        mouseEvent(new))

mousePos = [0,0]
def mouseMoveAction(rangeOfMotion, axis, minDist):
    def ret(old, new):
        if dist(mousePos[0], mousePos[1],
                centerOfDisplay[0], centerOfDisplay[1]) > minDist:
            mousePos[axis] = int(rangeOfMotion * new)
        mouseMoveAroundCenter(mousePos[0], mousePos[1]) 
    return ret


actions = {
    'trigger': mousePressAction(),
    'x-axis': mouseMoveAction(150, 0, 50),
    'y-axis': mouseMoveAction(150, 1, 50),
    'z-axis': lambda old, new: 0,
    'hat-x': lambda old, new: 0,
    'hat-y': lambda old, new: 0,
    'slider': mouseScrollAction(100),
    'button-2': lambda old, new: 0,
    'button-3': keyAction('.'),
    'button-4': lambda old, new: 0,
    'button-5': keyAction('f'),
    'button-6': lambda old, new: 0,
    'button-7': keyAction('w'),
    'button-8': keyAction('q'),
    'button-9': lambda old, new: 0,
    'button-10': keyAction('tab'),
    'button-11': lambda old, new: 0,
    'button-12': keyAction('esc')
}


def doActions():
    for key in controls:
        if old_controls[key] != controls[key]:
            actions[key](old_controls[key], controls[key])


######################################################
######################################################
######################################################


# https://msdn.microsoft.com/en-us/library/windows/desktop/dd375731(v=vs.85).aspx    
keys = {'f': 0x46,
        'esc': 0x1B,
        'q': 0x51,
        '.': 0xBE,
        'tab': 0x09,
        'w': 0x57}

def keyEvent(keyDown, keyName):
    eventConstants = {'key_down': 0, 'key_up': 0x0002}
    ctypes.windll.user32.keybd_event(keys[keyName], 0, eventConstants['key_down' if keyDown else 'key_up'], 0)


# https://msdn.microsoft.com/en-us/library/windows/desktop/dd375731(v=vs.85).aspx
# only the required consts are shown, more can be found at the link
mouseEventConstants = {'absolute_pos': 0x8000,
                       'left_down': 0x0002,
                       'left_up': 0x0004,
                       'wheel': 0x0800}

# https://msdn.microsoft.com/en-us/library/ms724385(v=vs.85).aspx
centerOfDisplay = ( int(ctypes.windll.user32.GetSystemMetrics(0) / 2),
                    int(ctypes.windll.user32.GetSystemMetrics(1) / 2))
def mouseMoveAroundCenter(x, y):
    ctypes.windll.user32.SetCursorPos(x + centerOfDisplay[0],
                                      y + centerOfDisplay[1])

def mouseScroll(ticks):
    # https://msdn.microsoft.com/en-us/library/ms646260(v=vs.85).aspx
    amtPerTick = 120
    ctypes.windll.user32.mouse_event(
            mouseEventConstants['wheel'],
            0, 0, ticks * amtPerTick, 0)

def mouseEvent(pressed):
    ctypes.windll.user32.mouse_event(
            mouseEventConstants['left_down' if pressed else 'left_up'],
            0, 0, 0, 0)

def dist(x1, y1, x2, y2):
    return math.sqrt( (x1-x2)**2 + (y1-y2)**2 )

if __name__ == "__main__":
    main()

(如果你想运行它，你就需要玩游戏。这个程序是用python3.x编写的，但是它也可以在python2.x上工作。)

任何反馈都是有帮助的！谢谢!

Answer 1

我非常喜欢主循环中的这个：

      updateData(pygame.joystick.Joystick(0))
      doActions()

简明扼要。

您可以通过执行Extract生成def look_for_quit_event():来继续该主题

干的。controls分配有点冗长，可能会在代码中更深入地进行。更喜欢：

controls = { key: 0
             for key in actions }

keys分配不必要地不透明：

keys = {'f': 0x46,
        'esc': 0x1B,
        'q': 0x51,
        '.': 0xBE,
        'tab': 0x09,
        'w': 0x57}

请给我这个。

keys = {ch: ord(ch) for ch in "fqw."}
keys["tab"] = 9
keys["esc"] = 0x1B

感谢您提供的各种MSDN URL，它们非常有用。