public void RegisterAITask(AIBase _ai)
{
if (dic_AI_list == null)
{
dic_AI_list = new Dictionary <string, SortedDictionary <int, List <AIBase> > >();
}
if (!dic_AI_list.ContainsKey(_ai.GetID()))
{
dic_AI_list.Add(_ai.GetID(), new SortedDictionary <int, List <AIBase> >());
}
if (!dic_AI_list[_ai.GetID()].ContainsKey(_ai.GetPriority()))
{
dic_AI_list[_ai.GetID()].Add(_ai.GetPriority(), new List <AIBase>());
}
dic_AI_list[_ai.GetID()][_ai.GetPriority()].Add(_ai);
}