CGGameObject_C::IsValidOpenAction.cpp

char CGGameObject_C::IsValidOpenAction(CGGameObject_C *this, int action)
{
  const uint32_t GO_FLAG_LOCKED = 0x2;
    
  CGGameObjectData gameObject = this->m_gameObj;
  GOState state = this->m_gameObj->m_state;
  
  if ( action == 4 ) 
    return ( state == GO_STATE_ACTIVE_ALTERNATIVE ? 1 : 0 );
  
  if ( state == GO_STATE_ACTIVE_ALTERNATIVE )
    return 0;
  
  if ( action != 2 && state != GO_STATE_READY )
    return 0;
  
  if ( action != 0 )
  {
    if ( action == 1 )
    {
      if ( ( gameObject->m_flags & GO_FLAG_LOCKED ) != 0 )
        return 0;
    }
    else if ( action == 2 && state != GO_STATE_ACTIVE )
    {
      return 0;
    }
  }
  else if ( ( gameObject->m_flags & GO_FLAG_LOCKED ) != 0 )
  {
    return 0;
  }
  
  return 1;
}

// taken from Trinity
enum GOState
{
    GO_STATE_ACTIVE             = 0,  // used and not reset (closed door is open)
    GO_STATE_READY              = 1,  // ready (closed door is closed)
    GO_STATE_ACTIVE_ALTERNATIVE = 2,  // used and not reset by a scripted event (deadmines cannon door is open)
};