/*
========================
IN_InitDIMouse
========================
*/
bool IN_InitDIMouse( void ) {
HRESULT hr;
if( win32.g_pdi == NULL ) {
return false;
}
// obtain an interface to the system mouse device.
hr = win32.g_pdi->CreateDevice( GUID_SysMouse, &win32.g_pMouse, NULL );
if( FAILED( hr ) ) {
common->Printf( "mouse: Couldn't open DI mouse device\n" );
return false;
}
// Set the data format to "mouse format" - a predefined data format
//
// A data format specifies which controls on a device we
// are interested in, and how they should be reported.
//
// This tells DirectInput that we will be passing a
// DIMOUSESTATE2 structure to IDirectInputDevice::GetDeviceState.
if( FAILED( hr = win32.g_pMouse->SetDataFormat( &c_dfDIMouse2 ) ) ) {
common->Printf( "mouse: Couldn't set DI mouse format\n" );
return false;
}
// set the cooperativity level.
hr = win32.g_pMouse->SetCooperativeLevel( win32.hWnd, DISCL_EXCLUSIVE | DISCL_FOREGROUND );
if( FAILED( hr ) ) {
common->Printf( "mouse: Couldn't set DI coop level\n" );
return false;
}
// IMPORTANT STEP TO USE BUFFERED DEVICE DATA!
//
// DirectInput uses unbuffered I/O (buffer size = 0) by default.
// If you want to read buffered data, you need to set a nonzero
// buffer size.
//
// Set the buffer size to SAMPLE_BUFFER_SIZE (defined above) elements.
//
// The buffer size is a DWORD property associated with the device.
DIPROPDWORD dipdw;
dipdw.diph.dwSize = sizeof( DIPROPDWORD );
dipdw.diph.dwHeaderSize = sizeof( DIPROPHEADER );
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = DINPUT_BUFFERSIZE; // Arbitary buffer size
if( FAILED( hr = win32.g_pMouse->SetProperty( DIPROP_BUFFERSIZE, &dipdw.diph ) ) ) {
common->Printf( "mouse: Couldn't set DI buffersize\n" );
return false;
}
IN_ActivateMouse();
// clear any pending samples
Sys_PollMouseInputEvents();
common->Printf( "mouse: DirectInput initialized.\n" );
return true;
}
/*
===================
idUsercmdGenLocal::Mouse
===================
*/
void idUsercmdGenLocal::Mouse(void)
{
int i, numEvents;
numEvents = Sys_PollMouseInputEvents();
if (numEvents) {
//
// Study each of the buffer elements and process them.
//
for (i = 0; i < numEvents; i++) {
int action, value;
if (Sys_ReturnMouseInputEvent(i, action, value)) {
if (action >= M_ACTION1 && action <= M_ACTION8) {
mouseButton = K_MOUSE1 + (action - M_ACTION1);
mouseDown = (value != 0);
Key(mouseButton, mouseDown);
} else {
switch (action) {
case M_DELTAX:
mouseDx += value;
continuousMouseX += value;
break;
case M_DELTAY:
mouseDy += value;
continuousMouseY += value;
break;
case M_DELTAZ:
int key = value < 0 ? K_MWHEELDOWN : K_MWHEELUP;
value = abs(value);
while (value-- > 0) {
Key(key, true);
Key(key, false);
mouseButton = key;
mouseDown = true;
}
break;
}
}
}
}
}
Sys_EndMouseInputEvents();
}