public Body(World world, Object userData)
{
FixtureList = new List<Fixture>(32);
World = world;
UserData = userData;
FixedRotation = false;
IsBullet = false;
SleepingAllowed = true;
Awake = true;
BodyType = BodyType.Static;
Enabled = true;
Xf.R.Set(0);
world.AddBody(this);
}