private void Form1_MouseMove(object sender, MouseEventArgs e)
{
platEnemy.OverCase(e.X, e.Y);
// moving
foreach (Ship ship in ships)
{
if (ship.Draggering)
{
// get the middle of the case
ship.X = e.X - size / 2;
ship.Y = e.Y - size / 2;
Invalidate();
}
}
}