public void Sample()
{
_velocity *= 1.0f - _acceleration;
_velocity = new Vector3(
Clamp(_velocity.X + Accelerator(_w) - Accelerator(_s), -1.0f, 1.0f),
Clamp(_velocity.Y + Accelerator(_d) - Accelerator(_a), -1.0f, 1.0f),
Clamp(_velocity.Z + Accelerator(_space) - Accelerator(_x), -1.0f, 1.0f));
}