TrafficRoad/Assets/BuildSystem/LogicGridExtensions.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace BuildSystem {
    public static class LogicGridExtensions
    {
        public static void BindLeftAndThis(this Grid self, Grid left)
        {
            left.right = self;
            self.left = left;
        }

        public static void BindDownAndThis(this Grid self, Grid down)
        {
            down.up = self;
            self.down = down;
        }

        /// <summary>
        /// 判断是否可以放置，
        /// 首先判断是不是万能，
        /// 如果是再判断是否有车道，
        /// 如果是再判断车道是否相同
        /// </summary>
        /// <param name="self"></param>
        /// <param name="placeObject"></param>
        /// <returns></returns>
        public static bool IsCanPlace(this Grid self, PlaceObject placeObject) {
            bool isCanPlace = true;
            if (self.up!=null && isCanPlace) {
                isCanPlace = (self.up.isHaves[2] == IsHave.None) || ((self.up.isHaves[2] == placeObject.ishave[0]) && (self.up.type[2] == placeObject.type[0] || (self.up.isHaves[2] == IsHave.No && IsHave.No == placeObject.ishave[0])));
            }
            if (self.right != null && isCanPlace)
            {
                isCanPlace = (self.right.isHaves[3] == IsHave.None) || ((self.right.isHaves[3] == placeObject.ishave[1]) && (self.right.type[3] == placeObject.type[1] || (self.right.isHaves[3] == IsHave.No && IsHave.No == placeObject.ishave[1])));
            }
            if (self.down != null && isCanPlace)
            {
                isCanPlace = (self.down.isHaves[0] == IsHave.None) || ((self.down.isHaves[0] == placeObject.ishave[2]) && (self.down.type[0] == placeObject.type[2] || (self.down.isHaves[0] == IsHave.No && IsHave.No == placeObject.ishave[2])));
            }
            if (self.left != null && isCanPlace)
            {
                isCanPlace = (self.left.isHaves[1] == IsHave.None) || ((self.left.isHaves[1] == placeObject.ishave[3]) && (self.left.type[1] == placeObject.type[3] || (self.left.isHaves[1] == IsHave.No && IsHave.No == placeObject.ishave[3])));
            }
            return isCanPlace;
        }
    }
}