void AddFollowState(eFollowState uiFollowState)
{
m_uiFollowState |= uiFollowState;
}
void RemoveFollowState(eFollowState uiFollowState)
{
m_uiFollowState &= ~uiFollowState;
}
bool HasFollowState(eFollowState uiFollowState)
{
return((m_uiFollowState & uiFollowState) != 0);
}