using System.Runtime.CompilerServices;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class Cell : MonoBehaviour
{
    GameManager gameManager;
    public GameObject mask = null;     //选中角色时在单元格上显示攻击范围
    public Cell parent = null;
    public int cost = 99;        //走在单元格上消耗的行动点数
    public int damage = 0;      //单元格对站在上面的角色造成的伤害
    bool occupied = false;      //是否有角色占着单元格
    public Character currentCharacter;      //当前单元格上的角色
    public int gCost;        //路径耗散
    public int hCost;       //预测耗散
    public int fCost;       //A*耗散
    private void Awake()
    {
        gameManager = GameObject.Find("GameManager").GetComponent<GameManager>();
        if(gameObject.tag == "Block")   cost = 99;
    }
    public void SetOccupied(bool value)
    {
        occupied = value;
    }

    public bool GetOccupied()
    {
        return occupied;
    }

    public void SetMask(bool value)
    {
        mask.SetActive(value);
    }
    public void SetCurrentCharacter(Character character)
    {
        currentCharacter = character;
    }
    public Character GetCurrentCharacter()
    {
        return currentCharacter;
    }
    private void OnMouseEnter()
    {
        gameManager.ChangeCellInformation(cost, damage);
    }
    public List<Cell> GetNeighbor()     //寻找邻居节点
    {
        RaycastHit2D[] hits ;
        List<Vector2> directions = new List<Vector2> {Vector2.up, Vector2.down, Vector2.left, Vector2.right};
        List<Cell> neighbors = new List<Cell>();
        foreach(var direction in directions)
        {
            hits = Physics2D.RaycastAll(transform.position,direction,1.0f,LayerMask.GetMask("Cells"));
            if(hits.GetLength(0) < 2) continue;
            Cell cell = hits[1].collider.GetComponent<Cell>();
            neighbors.Add(cell);
        }
        return neighbors;
    }
    public void CalculateCosts(Vector2 goal)
    {
        gCost = parent.gCost + cost + damage;
        hCost = GameSettlement.Manhattan(transform.position, goal);
        fCost = gCost + hCost;
    }
}