using System.Collections.Generic;
using Gameplay.Area;
using Gameplay.Character;
using Gameplay.Unit;
using Gameplay.Unit.Data;
namespace Gameplay.PlayerSkill.Logic
{
    /// <summary>
    /// 散列移动,
    /// 以目标点为中心,找到合适的位置,让所有己方单位移动到这些位置
    /// </summary>
    public class PlayerSkillLogic11 : BasePlayerSkillLogic
    {

        protected override void _OnInit()
        {
            base._OnInit();
            var searchedList = new List<int>();

            var allSelfUnits = GameUnitManager.instance.infightUnits.GetListByTroop(ETroopsId.Self);
            var allFilterUnits = new List<GameUnit>();
            for (int i = 0; i < allSelfUnits.Count; i++)
            {
                var unit = allSelfUnits[i];
                if (unit.gameunitType != EGameUnitType.Character
                    && unit.gameunitType != EGameUnitType.Vehicle)
                {
                    // 只对角色和载具生效
                    continue;
                }
                if (!unit.commonData.canControl)
                {
                    // 不能控制的单位不移动
                    continue;
                }
                if (unit.transData.cellIndex == owner.selectedCellIndex)
                {
                    // 自己不需要移动
                    searchedList.Add(owner.selectedCellIndex);
                    continue;
                }
                allFilterUnits.Add(unit);
            }
            
            // 寻找符合的位置
            var availableCellIndexs = new List<int>();
            var workList = new List<int>();
            var searchUnitIndex = 0;
            var searchDistance = 1;
            var aroundCellIndex = AreaManager.instance.GetCellIndexsAround(owner.selectedCellIndex, searchDistance);
            workList.AddRange(aroundCellIndex);
            while (availableCellIndexs.Count < allFilterUnits.Count)
            {
                var unit = allFilterUnits[searchUnitIndex];
                while (workList.Count > 0)
                {
                    var cellIndex = workList[0];
                    workList.RemoveAt(0);
                    if (searchedList.Contains(cellIndex))
                    {
                        continue;
                    }
                    searchedList.Add(cellIndex);
                    // 判断地面是否可通行
                    var canPass = PathFinder.CanPass(cellIndex, unit);
                    if (!canPass)
                    {
                        continue;
                    }
                    availableCellIndexs.Add(cellIndex);
                    unit.MoveTo(cellIndex, true);
                    searchUnitIndex++;
                    break;
                }
                
                if (workList.Count == 0)
                {
                    searchDistance++;
                    if (searchDistance >= 5)
                    {
                        // 超出范围
                        break;
                    }
                    aroundCellIndex = AreaManager.instance.GetCellIndexsAround(owner.selectedCellIndex, searchDistance);
                    workList.AddRange(aroundCellIndex);
                }
            }

            isFinished = true;
        }

    }
}