using CommonAI.Zone.Formula;
using CommonAI.Zone.Instance;
using CommonLang;
using System;
using XmdsCommonServer.Plugin;
using XmdsCommonServer.Plugin.XmdsSkillTemplate.Skills;

namespace XmdsCommonSkill.Plugin.Buffs
{
    /// <summary>
    /// Description: 移动速度变更, 衰减

    public abstract class XmdsBuff_SpeedAttenuation : XmdsBuffBase
    {
        /// <summary>
        /// 传负值减速度，传正值加速度.
        /// </summary>
        public int ChangePercent = 0;
		private int ChangeSpeed = 0;			//改变速率
        private int mOpID = 0;

		public override void CopyTo(UnitBuff other)
		{
			var ret = other as XmdsBuff_SpeedAttenuation;
			ret.ChangePercent = this.ChangePercent;

			base.CopyTo(other);
		}

		protected override void OnBuffBegin(XmdsCommonServer.Plugin.XmdsVirtual hitter, XmdsCommonServer.Plugin.XmdsVirtual attacker, InstanceUnit.BuffState state)
        {
            XmdsVirtual.PropChangeOperation pco = hitter.CreatePropChangeOpertation(this);
            pco.Type = XmdsVirtual.UnitAttributeType.MoveSpeed;
            pco.Value = ChangePercent;
            pco.OpType = XmdsVirtual.PropChangeOperation.OperateType.Percent;
            mOpID = hitter.AddPropChangeOperation(pco);
			if (state.LifeTimeMS > 1000)
			{
				ChangeSpeed = ChangePercent / (state.LifeTimeMS/1000);
			}
			
            XmdsVirtual.FormatLog("BuffBegin : 单位【{0}】,移动速度变更{1}", hitter.mProp.ServerData.BaseInfo.name, ChangePercent);
        }

        protected override void OnBuffEnd(XmdsCommonServer.Plugin.XmdsVirtual hitter, InstanceUnit.BuffState state, bool replace)
        {
            hitter.RemovePropChangeOperation(mOpID);

            XmdsVirtual.FormatLog("BuffEnd : 单位【{0}】,移动速度变更{1}", hitter.mProp.ServerData.BaseInfo.name, ChangePercent);
        }

        public override void BuffUpdate(XmdsVirtual unit, InstanceUnit.BuffState state)
        {
			if(ChangeSpeed < 0)
			{
				ChangePercent = Math.Min(0, ChangePercent - ChangeSpeed);
			}
			else
			{
				ChangePercent = Math.Max(0, ChangePercent - ChangeSpeed);
			}
			//Console.WriteLine("BuffUpdate - " + TimeUtil.GetTimestampMS() + ", " + ChangePercent);
            XmdsVirtual.PropChangeOperation pco = unit.CreatePropChangeOpertation(this);
            pco.Type = XmdsVirtual.UnitAttributeType.MoveSpeed;
            pco.Value = ChangePercent;
            pco.OpType = XmdsVirtual.PropChangeOperation.OperateType.Percent;

            //刷新数值
            unit.UpdatePropChangeOperation(mOpID, pco);
        }
    }
}