private void RandomVelocity()
{
_rotateSpeed = (float)(RndGen.Next(10000) - 5000) / 60;
VelocityX = (float)((RndGen.NextDouble() * 2000 - 1000) * ((3 - (int)_size + 1) * 1.05) / 60);
VelocityY = (float)((RndGen.NextDouble() * 2000 - 1000) * ((3 - (int)_size + 1) * 1.05) / 60);
}
