[英]How to get USB controller/gamepad to work with python
我有一個 USB 控制器,我試圖從 Microsoft® SideWinder® Plug & Play Game Pad 獲取輸入。 我在試圖弄清楚如何正確接收其輸入時遇到了困難。 不幸的是,我不能使用 pygame,因為它需要一個窗口來接收輸入,但我必須生成一個 pyglet 窗口(通過 PsychoPy)來運行我的程序。 使用 pygame 它可以連接並顯示按鈕的狀態,但是如果不創建窗口就無法接收輸入。 我嘗試尋找其他庫,但我遇到的只是輸入,它與我的控制器不兼容(安裝后未檢測到設備)。 控制器本身可以正常工作,因為我已經使用在線游戲手柄測試儀對其進行了測試。 PsychoPy 的操縱桿 API 目前已損壞且無法工作,因此也沒有運氣。
我真的希望有人就如何從我的控制器/游戲手柄接收輸入到我的程序中提出建議?
對於 Windows,您可以直接使用WINMM.dll 。
使用ctypes庫加載 dll(請參閱加載共享庫)。 使用ctypes.WINFUNCTYPE
為函數創建原型:
import ctypes
winmmdll = ctypes.WinDLL('winmm.dll')
# [joyGetNumDevs](https://docs.microsoft.com/en-us/windows/win32/api/joystickapi/nf-joystickapi-joygetnumdevs)
"""
UINT joyGetNumDevs();
"""
joyGetNumDevs_proto = ctypes.WINFUNCTYPE(ctypes.c_uint)
joyGetNumDevs_func = joyGetNumDevs_proto(("joyGetNumDevs", winmmdll))
# [joyGetDevCaps](https://docs.microsoft.com/en-us/windows/win32/api/joystickapi/nf-joystickapi-joygetdevcaps)
"""
MMRESULT joyGetDevCaps(UINT uJoyID, LPJOYCAPS pjc, UINT cbjc);
32 bit: joyGetDevCapsA
64 bit: joyGetDevCapsW
sizeof(JOYCAPS): 728
"""
joyGetDevCaps_proto = ctypes.WINFUNCTYPE(ctypes.c_uint, ctypes.c_uint, ctypes.c_void_p, ctypes.c_uint)
joyGetDevCaps_param = (1, "uJoyID", 0), (1, "pjc", None), (1, "cbjc", 0)
joyGetDevCaps_func = joyGetDevCaps_proto(("joyGetDevCapsW", winmmdll), joyGetDevCaps_param)
# [joyGetPosEx](https://docs.microsoft.com/en-us/windows/win32/api/joystickapi/nf-joystickapi-joygetposex)
"""
MMRESULT joyGetPosEx(UINT uJoyID, LPJOYINFOEX pji);
sizeof(JOYINFOEX): 52
"""
joyGetPosEx_proto = ctypes.WINFUNCTYPE(ctypes.c_uint, ctypes.c_uint, ctypes.c_void_p)
joyGetPosEx_param = (1, "uJoyID", 0), (1, "pji", None)
joyGetPosEx_func = joyGetPosEx_proto(("joyGetPosEx", winmmdll), joyGetPosEx_param)
創建委托給 DLL 的 python 函數joyGetNumDevs
、 joyGetDevCaps
和joyGetPosEx
。 並為類型的類JOYCAPS
分別JOYINFOEX
:
# joystickapi - joyGetNumDevs
def joyGetNumDevs():
try:
num = joyGetNumDevs_func()
except:
num = 0
return num
# joystickapi - joyGetDevCaps
def joyGetDevCaps(uJoyID):
try:
buffer = (ctypes.c_ubyte * JOYCAPS.SIZE_W)()
p1 = ctypes.c_uint(uJoyID)
p2 = ctypes.cast(buffer, ctypes.c_void_p)
p3 = ctypes.c_uint(JOYCAPS.SIZE_W)
ret_val = joyGetDevCaps_func(p1, p2, p3)
ret = (False, None) if ret_val != JOYERR_NOERROR else (True, JOYCAPS(buffer))
except:
ret = False, None
return ret
# joystickapi - joyGetPosEx
def joyGetPosEx(uJoyID):
try:
buffer = (ctypes.c_uint32 * (JOYINFOEX.SIZE // 4))()
buffer[0] = JOYINFOEX.SIZE
buffer[1] = JOY_RETURNALL
p1 = ctypes.c_uint(uJoyID)
p2 = ctypes.cast(buffer, ctypes.c_void_p)
ret_val = joyGetPosEx_func(p1, p2)
ret = (False, None) if ret_val != JOYERR_NOERROR else (True, JOYINFOEX(buffer))
except:
ret = False, None
return ret
JOYERR_NOERROR = 0
JOY_RETURNX = 0x00000001
JOY_RETURNY = 0x00000002
JOY_RETURNZ = 0x00000004
JOY_RETURNR = 0x00000008
JOY_RETURNU = 0x00000010
JOY_RETURNV = 0x00000020
JOY_RETURNPOV = 0x00000040
JOY_RETURNBUTTONS = 0x00000080
JOY_RETURNRAWDATA = 0x00000100
JOY_RETURNPOVCTS = 0x00000200
JOY_RETURNCENTERED = 0x00000400
JOY_USEDEADZONE = 0x00000800
JOY_RETURNALL = (JOY_RETURNX | JOY_RETURNY | JOY_RETURNZ | \
JOY_RETURNR | JOY_RETURNU | JOY_RETURNV | \
JOY_RETURNPOV | JOY_RETURNBUTTONS)
# joystickapi - JOYCAPS
class JOYCAPS:
SIZE_W = 728
OFFSET_V = 4 + 32*2
def __init__(self, buffer):
ushort_array = (ctypes.c_uint16 * 2).from_buffer(buffer)
self.wMid, self.wPid = ushort_array
wchar_array = (ctypes.c_wchar * 32).from_buffer(buffer, 4)
self.szPname = ctypes.cast(wchar_array, ctypes.c_wchar_p).value
uint_array = (ctypes.c_uint32 * 19).from_buffer(buffer, JOYCAPS.OFFSET_V)
self.wXmin, self.wXmax, self.wYmin, self.wYmax, self.wZmin, self.wZmax, \
self.wNumButtons, self.wPeriodMin, self.wPeriodMax, \
self.wRmin, self.wRmax, self.wUmin, self.wUmax, self.wVmin, self.wVmax, \
self.wCaps, self.wMaxAxes, self.wNumAxes, self.wMaxButtons = uint_array
# joystickapi - JOYINFOEX
class JOYINFOEX:
SIZE = 52
def __init__(self, buffer):
uint_array = (ctypes.c_uint32 * (JOYINFOEX.SIZE // 4)).from_buffer(buffer)
self.dwSize, self.dwFlags, \
self.dwXpos, self.dwYpos, self.dwZpos, self.dwRpos, self.dwUpos, self.dwVpos, \
self.dwButtons, self.dwButtonNumber, self.dwPOV, self.dwReserved1, self.dwReserved2 = uint_array
請參閱測試 API 的簡單示例:
import joystickapi
import msvcrt
import time
print("start")
num = joystickapi.joyGetNumDevs()
ret, caps, startinfo = False, None, None
for id in range(num):
ret, caps = joystickapi.joyGetDevCaps(id)
if ret:
print("gamepad detected: " + caps.szPname)
ret, startinfo = joystickapi.joyGetPosEx(id)
break
else:
print("no gamepad detected")
run = ret
while run:
time.sleep(0.1)
if msvcrt.kbhit() and msvcrt.getch() == chr(27).encode(): # detect ESC
run = False
ret, info = joystickapi.joyGetPosEx(id)
if ret:
btns = [(1 << i) & info.dwButtons != 0 for i in range(caps.wNumButtons)]
axisXYZ = [info.dwXpos-startinfo.dwXpos, info.dwYpos-startinfo.dwYpos, info.dwZpos-startinfo.dwZpos]
axisRUV = [info.dwRpos-startinfo.dwRpos, info.dwUpos-startinfo.dwUpos, info.dwVpos-startinfo.dwVpos]
if info.dwButtons:
print("buttons: ", btns)
if any([abs(v) > 10 for v in axisXYZ]):
print("axis:", axisXYZ)
if any([abs(v) > 10 for v in axisRUV]):
print("roation axis:", axisRUV)
print("end")
GitHub 存儲庫python_windows_joystickapi 中提供了 api 綁定和示例
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