using System.Collections.Generic;
using Gameplay.Common;
using Gameplay.Unit;
using Gameplay.Unit.Data;

namespace Gameplay.Summon
{
    using Gameplay.Area;
    using Gameplay.Bullet;
    using LTGame;

    public class SummonStateTent : BaseSummonState
    {

        private readonly SummonTent _tent;

        private float _remainTriggerTime;

        public SummonStateTent(SummonTent tent) : base(tent, ESummonState.Tent)
        {
            _tent = tent;
        }

        protected override void _OnEnter(NBaseState exitState, object param)
        {
            base._OnEnter(exitState, param);
            _remainTriggerTime = _tent.triggerInterval;
        }

        protected override void _OnRunning()
        {
            base._OnRunning();
            _remainTriggerTime -= deltaTime;
            if (_remainTriggerTime <= 0)
            {
                _remainTriggerTime += _tent.triggerInterval;
                _DoLogic();
            }
        }

        private void _DoLogic()
        {
            var checkDistance = _tent.checkDistance;

            // 根据作用区域筛选目标
            var selectIndexs = AreaManager.instance.GetCellIndexsAround(owner.transData.cellIndex, checkDistance);

            for (var i = 0; i < selectIndexs.Count; ++i)
            {
                var cellIndex = selectIndexs[i];
                var units = AreaManager.instance.GetUnitsByCellIndex(cellIndex);
                _TryEmitBulletToUnits(units);
            }

        }

        private void _TryEmitBulletToUnits(List<GameUnit> units)
        {
            var bulletId = _tent.bulletId;
            for (int i = 0; i < units.Count; i++)
            {
                var unit = units[i];
                if (unit.gameunitType != EGameUnitType.Character) continue;
                if (unit.commonData.troopId != owner.creator.commonData.troopId) continue;
                BulletManager.instance.EmitBullet(bulletId, unit, owner.creator);
            }
        }

    }
}