/// <summary>
/// 当物体增加时刷新重心 -------------------------------这个浮力加权有问题
/// </summary>
/// <param name="newCube">新物体</param>
private void UpdateGravity(CubeInfo newCube)
{
body.centerOfMass = m_centerOfMass.localPosition;
SetGravity(PhysicsManager.SeekCenterMass(m_centerOfMass.transform.position, Mathf.RoundToInt(body.mass), newCube.GetParticle(), newCube.GetMass()));
}
