using System;
using System.Collections.Generic;

namespace Game
{
    public enum EIdGenType
    {
        Intiger,        //+1
        Code,           //<<1
    }
    public enum EIdType
    {
        Entity,
        SkillCast,
    }
    public static class UtilID
    {
        private static Dictionary<EIdType, int> _mIdRecordDict;
        private static Dictionary<EIdType, EIdGenType> _mIdTypeDict;
        static UtilID()
        {
            _mIdRecordDict = new Dictionary<EIdType, int>();
            foreach (EIdType typeNow in Enum.GetValues(typeof(EIdType)))
            {
                _mIdRecordDict[typeNow] = 1;
            }
            _mIdTypeDict = new Dictionary<EIdType, EIdGenType>(){
                {EIdType.Entity,EIdGenType.Intiger},
                {EIdType.SkillCast,EIdGenType.Intiger},
            };
        }
        public static int GetID(EIdType idType)
        {
            int ret = _mIdRecordDict[idType];
            switch ((int)_mIdTypeDict[idType])
            {
                case (int)EIdGenType.Intiger:
                    _mIdRecordDict[idType] += 1;
                    break;
                case (int)EIdGenType.Code:
                    _mIdRecordDict[idType] = _mIdRecordDict[idType] << 1;
                    break;
                default:
                    _mIdRecordDict[idType] += 1;
                    break;
            }
            return ret;
        }
    }
}