using System.Collections;
using System.Collections.Generic;
using UnityEngine;
namespace BuildSystem
{
    public enum GridType {
        General, Special, Initial
    }
    public class Grid
    {
        public int x { get; }
        public int y { get; }
        public int z { get; }
        public Vector3Int logicPos;

        [Header("相连的Grid")]
        public Grid up;
        public Grid down;
        public Grid left;
        public Grid right;

        //四个方向有无车道 上右下左
        public IsHave[] isHaves = new IsHave[4] { IsHave.None, IsHave.None , IsHave.None , IsHave.None };

        public Vector3 pos { get; }

        public bool isPlace = false;
        public GridType gridType = GridType.General;
        public PlaceObject placeObject;
        public List<Grid> ground = new List<Grid>();

        //放置的道路类型
        public RoadType roadType;

        //四个方向的车道数量 上右下左
        public PlaceObjectType[] type = new PlaceObjectType[4] { PlaceObjectType.None, PlaceObjectType.None, PlaceObjectType.None, PlaceObjectType.None};
        public Grid(Vector3Int logicPos) {
            this.logicPos = logicPos;
            x = this.logicPos.x;
            y = this.logicPos.y;
            z = this.logicPos.z;
            float gridSize = BuildSystemManager.Instance.gridSize;
            pos = BuildSystemManager.Instance.startPos + new Vector3(
                gridSize / 2 + x * gridSize,
                0,
                gridSize / 2 + z * gridSize);
            up = null;
            down = null;
            left = null;
            right = null;
        }
        public Grid(int x,int y ,int z)
        {
            this.x = x;
            this.y = y;
            this.z = z;
            logicPos = new Vector3Int(x,y,z); ;
            float gridSize = BuildSystemManager.Instance.gridSize;
            pos = BuildSystemManager.Instance.startPos + new Vector3(
               gridSize / 2 + x * gridSize,
               0,
               gridSize / 2 + z * gridSize);
            up = null;
            down = null;
            left = null;
            right = null;
        }

        /// <summary>
        /// 判断是否闭环 
        /// </summary>
        /// <returns></returns>
        public bool isClosedLoop() {
            if (isHaves[0]==IsHave.Yes) {
                if (up != null && up.placeObject && up.gridType != GridType.Special&& up.isHaves[2] != IsHave.Yes) {
                    return false;
                }
            }

            if (isHaves[1] == IsHave.Yes)
            {
                if (right != null && right.placeObject && right.gridType != GridType.Special && right.isHaves[3] != IsHave.Yes)
                {
                    return false;
                }
            }

            if (isHaves[2] == IsHave.Yes)
            {
                if (down != null && down.placeObject && down.gridType != GridType.Special && down.isHaves[0] != IsHave.Yes)
                {
                    return false;
                }
            }

            if (isHaves[3] == IsHave.Yes)
            {
                if (left != null && left.placeObject && left.gridType != GridType.Special && left.isHaves[1] != IsHave.Yes)
                {
                    return false;
                }
            }
            return true;
        }

        /// <summary>
        /// 移除物体初始化
        /// </summary>
        public void RemoveInit() {
            isHaves = new IsHave[4] { IsHave.None, IsHave.None, IsHave.None, IsHave.None };
            isPlace = false;
            gridType = GridType.General;
            roadType = RoadType.Straight;
            type = new PlaceObjectType[4] { PlaceObjectType.None, PlaceObjectType.None, PlaceObjectType.None, PlaceObjectType.None };
        }

        /// <summary>
        /// 记录周围不为空的相邻地块
        /// </summary>
        public void InitGround() {
            if (up!=null && up.placeObject && up.gridType != GridType.Special)
            {
                ground.Add(up);
            }

            if (down != null && down.placeObject && down.gridType != GridType.Special)
            {
                ground.Add(down);
            }

            if (left != null && left.placeObject && left.gridType != GridType.Special)
            {
                ground.Add(left);
            }

            if (right != null && right.placeObject&& right.gridType != GridType.Special)
            {
                ground.Add(right);
            }
        }


    }
}