C / C++ / MFC

int speed=Ball_List[b]->speed;
// Paddle center.
int paddle_center = Player->Location.X + Player->Width / 2;

// Ball center.
int ball_center = Ball_List[b]->gameBall->Location.X + Ball_List[b]->gameBall->Width / 2;

// Find the location on the paddle that the ball hit
int paddle_location = ball_center - paddle_center;

// Increase X speed according to distance from center of paddle.
double a=(90-paddle_location);
double angle = (Math::PI / 180) * a; // angle in radians.
Ball_List[b]->xVel = speed*Math::Cos(angle);
Ball_List[b]->yVel = -speed*Math::Sin(angle);

Ball_List[b]->gameBall->Top = Player->Location.Y - 16;

Member 2965471 wrote:

How can i compare the two image?

VCProgrammer wrote:

How can i find this??

bool isFloppyDevice( LPCTSTR lpszDevice )
{
    TCHAR szBuffer[MAX_PATH];
    bool bIsFloppy = false;
  
    if (QueryDosDevice(lpszDevice, szBuffer, MAX_PATH) > 0)
        bIsFloppy = (_tcsstr(_T("device\\floppy"), szBuffer) != NULL);
  
    return bIsFloppy;
}

bool isFloppyDevice( void )
{
    bool bIsFloppy = false;
  
    HANDLE hDevice = CreateFile(_T("\\\\.\\A:"), 
                                0, 
                                0, 
                                NULL, 
                                OPEN_EXISTING, 
                                0, 
                                NULL);
  
    if (hDevice != INVALID_HANDLE_VALUE)
    {
        DISK_GEOMETRY dg;
        DWORD dwBytesReturned;
  
        bIsFloppy = (DeviceIoControl(hDevice, 
                                     IOCTL_DISK_GET_DRIVE_GEOMETRY, 
                                     NULL, 
                                     0, 
                                     &dg, 
                                     sizeof(dg), 
                                     &dwBytesReturned, 
                                     NULL) != FALSE);
  
        CloseHandle(hDevice);
    }
  
    return bIsFloppy;
}