static BOOL CALLBACK DIJoystick_EnumAxisObjectsProc(LPCDIDEVICEOBJECTINSTANCE lpddoi,
LPVOID pvRef)
{
joystick_type* joystick = (joystick_type*)pvRef;
DIPROPRANGE diprg;
HRESULT hr;
joystick->axes[joystick->num_axes].guid = lpddoi->guidType;
joystick->axes[joystick->num_axes].name = (char *)malloc(strlen(lpddoi->tszName) + 1);
strcpy(joystick->axes[joystick->num_axes].name, lpddoi->tszName);
joystick->axes[joystick->num_axes].offset = lpddoi->dwOfs;
/*ErrorMsg("got axis %s, offset %i",lpddoi->tszName, lpddoi->dwOfs);*/
diprg.diph.dwSize = sizeof(diprg);
diprg.diph.dwHeaderSize = sizeof(diprg.diph);
diprg.diph.dwObj = lpddoi->dwOfs;
diprg.diph.dwHow = DIPH_BYOFFSET;
diprg.lMin = 0;
diprg.lMax = 255;
hr = IDirectInputDevice2_SetProperty(joystick->did, DIPROP_RANGE, &diprg.diph);
if (FAILED(hr)) /* if this fails, don't use this axis */
{
free(joystick->axes[joystick->num_axes].name);
joystick->axes[joystick->num_axes].name = NULL;
return DIENUM_CONTINUE;
}
#ifdef JOY_DEBUG
if (FAILED(hr))
{
ErrorMsg("DirectInput SetProperty() joystick axis %s failed - %s\n",
joystick->axes[joystick->num_axes].name,
DirectXDecodeError(hr));
}
#endif
/* Set axis dead zone to 0; we need accurate #'s for analog joystick reading. */
hr = SetDIDwordProperty(joystick->did, DIPROP_DEADZONE, lpddoi->dwOfs, DIPH_BYOFFSET, 0);
#ifdef JOY_DEBUG
if (FAILED(hr))
{
ErrorMsg("DirectInput SetProperty() joystick axis %s dead zone failed - %s\n",
joystick->axes[joystick->num_axes].name,
DirectXDecodeError(hr));
}
#endif
joystick->num_axes++;
return DIENUM_CONTINUE;
}
// this function sets the input range to -100 <-> +100 (we already do that in sdl)
// it also sets the dead zone which we do not support in sdl yet.. probably easy to do though...
void SetUpJoystickAxis(int joystick)
{
DIPROPRANGE diprg;
bool DeadzoneNotSet = false;
int i;
// set axis range to (-100 ... +100)
// This lets us test against 0 to see which way the stick is pointed.
diprg.diph.dwSize = sizeof(diprg);
diprg.diph.dwHeaderSize = sizeof(diprg.diph);
diprg.diph.dwHow = DIPH_BYOFFSET;
diprg.lMin = -100;
diprg.lMax = +100;
DebugPrintf( "SetUpJoystickAxis: setting up %d axes for joystick #%d='%s'\n",
JoystickInfo[ joystick ].NumAxis,
joystick,
JoystickInfo[ joystick ].Name );
if (JoystickInfo[joystick].Axis[AXIS_XAxis].exists)
{
DebugPrintf( "SetUpJoystickAxis: setting up X axis range=(%d,%d) for joystick #%d='%s'\n",
diprg.lMin, diprg.lMax,
joystick,
JoystickInfo[ joystick ].Name );
diprg.diph.dwObj = DIJOFS_X;
if( !lpdiJoystick[joystick] )
{
JoystickInfo[joystick].Axis[AXIS_XAxis].exists = false; // cannot set range, therefore do not allow axis
DebugPrintf( "SetUpJoystickAxis: failed to set range for X axis because lpdiJoystick[joystick] is NULL\n" );
}
else if ( lpdiJoystick[joystick]->lpVtbl->SetProperty(lpdiJoystick[joystick], DIPROP_RANGE, &diprg.diph) != DI_OK)
{
JoystickInfo[joystick].Axis[AXIS_XAxis].exists = false; // cannot set range, therefore do not allow axis
DebugPrintf( "SetUpJoystickAxis: failed to set range for X axis\n" );
}
else
{
// set dead zone
// Units are ten thousandths, so multiply %age by 100.
DebugPrintf( "SetUpJoystickAxis: setting up X axis deadzone=%d for joystick #%d='%s'\n",
JoystickInfo[ joystick ].Axis[AXIS_XAxis].deadzone,
joystick,
JoystickInfo[ joystick ].Name );
if (SetDIDwordProperty(lpdiJoystick[joystick], DIPROP_DEADZONE, DIJOFS_X, DIPH_BYOFFSET, (DWORD)(JoystickInfo[joystick].Axis[AXIS_XAxis].deadzone * 100)) != DI_OK)
{
// cannot set deadzone - but just ignore for now...
DeadzoneNotSet = true;
DebugPrintf( "SetUpJoystickAxis: failed to set deadzone for X axis\n" );
}
}
}
if (JoystickInfo[joystick].Axis[AXIS_YAxis].exists)
{
DebugPrintf( "SetUpJoystickAxis: setting up Y axis range=(%d,%d) for joystick #%d='%s'\n",
diprg.lMin, diprg.lMax,
joystick,
JoystickInfo[ joystick ].Name );
diprg.diph.dwObj = DIJOFS_Y;
if(lpdiJoystick[joystick]->lpVtbl->SetProperty(lpdiJoystick[joystick], DIPROP_RANGE, &diprg.diph) != DI_OK)
{
JoystickInfo[joystick].Axis[AXIS_YAxis].exists = false; // cannot set range, therefore do not allow axis
DebugPrintf( "SetUpJoystickAxis: failed to set range for Y axis\n" );
}else
{
DebugPrintf( "SetUpJoystickAxis: setting up Y axis deadzone=%d for joystick #%d='%s'\n",
JoystickInfo[ joystick ].Axis[AXIS_YAxis].deadzone,
joystick,
JoystickInfo[ joystick ].Name );
if (SetDIDwordProperty(lpdiJoystick[joystick], DIPROP_DEADZONE, DIJOFS_Y, DIPH_BYOFFSET, (DWORD)(JoystickInfo[joystick].Axis[AXIS_YAxis].deadzone * 100)) != DI_OK)
{
// cannot set deadzone - but just ignore for now...
DeadzoneNotSet = true;
DebugPrintf( "SetUpJoystickAxis: failed to set deadzone for Y axis\n" );
}
}
}
if (JoystickInfo[joystick].Axis[AXIS_ZAxis].exists)
{
DebugPrintf( "SetUpJoystickAxis: setting up Z axis range=(%d,%d) for joystick #%d='%s'\n",
diprg.lMin, diprg.lMax,
joystick,
JoystickInfo[ joystick ].Name );
diprg.diph.dwObj = DIJOFS_Z;
if(lpdiJoystick[joystick]->lpVtbl->SetProperty(lpdiJoystick[joystick], DIPROP_RANGE, &diprg.diph) != DI_OK)
{
JoystickInfo[joystick].Axis[AXIS_ZAxis].exists = false; // cannot set range, therefore do not allow axis
DebugPrintf( "SetUpJoystickAxis: failed to set range for Z axis\n" );
}else
{
DebugPrintf( "SetUpJoystickAxis: setting up Z axis deadzone=%d for joystick #%d='%s'\n",
JoystickInfo[ joystick ].Axis[AXIS_ZAxis].deadzone,
joystick,
JoystickInfo[ joystick ].Name );
if (SetDIDwordProperty(lpdiJoystick[joystick], DIPROP_DEADZONE, DIJOFS_Z, DIPH_BYOFFSET, (DWORD)(JoystickInfo[joystick].Axis[AXIS_ZAxis].deadzone * 100)) != DI_OK)
{
// cannot set deadzone - but just ignore for now...
DeadzoneNotSet = true;
DebugPrintf( "SetUpJoystickAxis: failed to set deadzone for Z axis\n" );
}
}
}
if (JoystickInfo[joystick].Axis[AXIS_RxAxis].exists)
{
DebugPrintf( "SetUpJoystickAxis: setting up Rx axis range=(%d,%d) for joystick #%d='%s'\n",
diprg.lMin, diprg.lMax,
joystick,
JoystickInfo[ joystick ].Name );
diprg.diph.dwObj = DIJOFS_RX;
if(lpdiJoystick[joystick]->lpVtbl->SetProperty(lpdiJoystick[joystick], DIPROP_RANGE, &diprg.diph) != DI_OK)
{
JoystickInfo[joystick].Axis[AXIS_RxAxis].exists = false; // cannot set range, therefore do not allow axis
DebugPrintf( "SetUpJoystickAxis: failed to set range for Rx axis\n" );
}else
{
DebugPrintf( "SetUpJoystickAxis: setting up Rx axis deadzone=%d for joystick #%d='%s'\n",
JoystickInfo[ joystick ].Axis[AXIS_RxAxis].deadzone,
joystick,
JoystickInfo[ joystick ].Name );
if (SetDIDwordProperty(lpdiJoystick[joystick], DIPROP_DEADZONE, DIJOFS_RX, DIPH_BYOFFSET, (DWORD)(JoystickInfo[joystick].Axis[AXIS_RxAxis].deadzone * 100)) != DI_OK)
{
// cannot set deadzone - but just ignore for now...
DeadzoneNotSet = true;
DebugPrintf( "SetUpJoystickAxis: failed to set deadzone for Rx axis\n" );
}
}
}
if (JoystickInfo[joystick].Axis[AXIS_RyAxis].exists)
{
DebugPrintf( "SetUpJoystickAxis: setting up Ry axis range=(%d,%d) for joystick #%d='%s'\n",
diprg.lMin, diprg.lMax,
joystick,
JoystickInfo[ joystick ].Name );
diprg.diph.dwObj = DIJOFS_RY;
if(lpdiJoystick[joystick]->lpVtbl->SetProperty(lpdiJoystick[joystick], DIPROP_RANGE, &diprg.diph) != DI_OK)
{
JoystickInfo[joystick].Axis[AXIS_RyAxis].exists = false; // cannot set range, therefore do not allow axis
DebugPrintf( "SetUpJoystickAxis: failed to set range for Ry axis\n" );
}else
{
DebugPrintf( "SetUpJoystickAxis: setting up Ry axis deadzone=%d for joystick #%d='%s'\n",
JoystickInfo[ joystick ].Axis[AXIS_RyAxis].deadzone,
joystick,
JoystickInfo[ joystick ].Name );
if (SetDIDwordProperty(lpdiJoystick[joystick], DIPROP_DEADZONE, DIJOFS_RY, DIPH_BYOFFSET, (DWORD)(JoystickInfo[joystick].Axis[AXIS_RyAxis].deadzone * 100)) != DI_OK)
{
// cannot set deadzone - but just ignore for now...
DeadzoneNotSet = true;
DebugPrintf( "SetUpJoystickAxis: failed to set deadzone for Ry axis\n" );
}
}
}
if (JoystickInfo[joystick].Axis[AXIS_RzAxis].exists)
{
DebugPrintf( "SetUpJoystickAxis: setting up Rz axis range=(%d,%d) for joystick #%d='%s'\n",
diprg.lMin, diprg.lMax,
joystick,
JoystickInfo[ joystick ].Name );
diprg.diph.dwObj = DIJOFS_RZ;
if(lpdiJoystick[joystick]->lpVtbl->SetProperty(lpdiJoystick[joystick], DIPROP_RANGE, &diprg.diph) != DI_OK)
{
JoystickInfo[joystick].Axis[AXIS_RzAxis].exists = false; // cannot set range, therefore do not allow axis
DebugPrintf( "SetUpJoystickAxis: failed to set range for Rz axis\n" );
}else
{
DebugPrintf( "SetUpJoystickAxis: setting up Rz axis deadzone=%d for joystick #%d='%s'\n",
JoystickInfo[ joystick ].Axis[AXIS_RzAxis].deadzone,
joystick,
JoystickInfo[ joystick ].Name );
if (SetDIDwordProperty(lpdiJoystick[joystick], DIPROP_DEADZONE, DIJOFS_RZ, DIPH_BYOFFSET, (DWORD)(JoystickInfo[joystick].Axis[AXIS_RzAxis].deadzone * 100)) != DI_OK)
{
// cannot set deadzone - but just ignore for now...
DeadzoneNotSet = true;
DebugPrintf( "SetUpJoystickAxis: failed to set deadzone for Rz axis\n" );
}
}
}
for (i = 0; i < 2; i++)
{
if (JoystickInfo[joystick].Axis[AXIS_SliderAxis0 + i].exists)
{
DebugPrintf( "SetUpJoystickAxis: setting up Slider%d range=(%d,%d) for joystick #%d='%s'\n",
i,
diprg.lMin, diprg.lMax,
joystick,
JoystickInfo[ joystick ].Name );
diprg.diph.dwObj = DIJOFS_SLIDER(i);
if(lpdiJoystick[joystick]->lpVtbl->SetProperty(lpdiJoystick[joystick], DIPROP_RANGE, &diprg.diph) != DI_OK)
{
JoystickInfo[joystick].Axis[AXIS_SliderAxis0 + i].exists = false; // cannot set range, therefore do not allow axis
DebugPrintf( "SetUpJoystickAxis: failed to set range for Slider%d axis\n", i );
}else
{
DebugPrintf( "SetUpJoystickAxis: setting up Slider%d deadzone=%d for joystick #%d='%s'\n",
i,
JoystickInfo[ joystick ].Axis[AXIS_SliderAxis0 + i].deadzone,
joystick,
JoystickInfo[ joystick ].Name );
if (SetDIDwordProperty(lpdiJoystick[joystick], DIPROP_DEADZONE, DIJOFS_SLIDER(i), DIPH_BYOFFSET, (DWORD)(JoystickInfo[joystick].Axis[AXIS_SliderAxis0 + i].deadzone * 100)) != DI_OK)
{
// cannot set deadzone - but just ignore for now...
DeadzoneNotSet = true;
DebugPrintf( "SetUpJoystickAxis: failed to set deadzone for Slider%d axis\n", i );
}
}
}
}
// could do something about unset deadzones here...
if (DeadzoneNotSet)
DeadzoneNotSet = false;
}