using System;
using Gameplay.Unit;

namespace Gameplay.Summon
{
    using Framework;
    using Area;
    using Common;
    using LTGame;

    public class SummonStateMineIdle : BaseSummonState
    {

        private SummonMine _mine;

        private bool _needCheckSelfCell;

        public SummonStateMineIdle(SummonMine owner) : base(owner, ESummonState.MineIdle)
        {
            _mine = owner;
        }

        protected override void _OnEnter(NBaseState exitState, object param)
        {
            base._OnEnter(exitState, param);
            _needCheckSelfCell = true;

            EventManager.Instance.Register(EventManager.EventName.INFIGHT_UNIT_CELLINDEX_CHANGE, (Action<GameUnit>)_OnAnyCharacterCellIndexChange);
        }

        protected override void _OnRunning()
        {
            base._OnRunning();

            if (_needCheckSelfCell)
            {
                _needCheckSelfCell = false;
                _CheckSelfCell();
            }
        }

        protected override void _OnExit(NBaseState exitState, object param)
        {
            base._OnExit(exitState, param);
            EventManager.Instance.Unregister(EventManager.EventName.INFIGHT_UNIT_CELLINDEX_CHANGE, (Action<GameUnit>)_OnAnyCharacterCellIndexChange);
        }

        private void _OnAnyCharacterCellIndexChange(GameUnit unit)
        {
            _needCheckSelfCell = true;
        }

        private void _CheckSelfCell()
        {
            var cellIds = AreaManager.instance.GetCellIndexsAround(owner.transData.cellIndex, _mine.checkDistance);
            for (int i = 0; i < cellIds.Count; i++)
            {
                var cellId = cellIds[i];
                var units = AreaManager.instance.GetUnitsByCellIndex(cellId);
                for (var j = 0; j < units.Count; ++j)
                {
                    var unit = units[j];
                    if (unit.commonData.troopId != owner.commonData.troopId)
                    {
                        // 爆炸
                        isFinished = true;
                        nextState = ESummonState.MineBoom;
                        return;
                    }
                }
            }
        }
    }
}