一篇文章教会你用Unity制作网格地图生成组件

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

public class Grid : MonoBehaviour
{

    public float gridWidght;
    public float girdHeight;
    public bool isHinder;
    public Color color;
    public Action OnClick;    
    //当网格地图比较大时，每帧更新模板颜色比较消耗性能，可以修改为通过事件触发
    void Update()
    {
        gameObject.GetComponent<MeshRenderer>().material.color=color;
    }
    //委托绑定模板点击事件
    private void OnMouseDown()
    {
        OnClick?.Invoke();
    }

}

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


public class GridMeshCreate : MonoBehaviour
{
    [Serializable]
    public class MeshRange
    {
        public int widght;
        public int height;
    }
    //网格的宽高范围
    public MeshRange meshRange;
    //生成网格起始点
    public Vector3 startPos;
    //网格生成的父物体
    public Transform parentTran;
    //模板预制体
    public GameObject gridPre;
    
    private Grid[,] m_grids;
    public Grid[,] MeshGridData
    {
        get
        {
            return m_grids;
        }
    }
    //注册模板事件
    public Action<Grid> gridEvent;

    /// <summary>
    /// 基于挂载组件的初始数据创建网格
    /// </summary>
    public void CreateMesh()
    {
        if (meshRange.widght == 0 || meshRange.height == 0)
        {
            return;
        }
        ClearMesh();
        m_grids = new Grid[meshRange.widght, meshRange.height];
        for (int i = 0; i < meshRange.widght; i++)
        {
            for (int j = 0; j < meshRange.height; j++)
            {
                CreateGrid(i, j);

            }
        }
    }

    /// <summary>
    /// 重载，基于传入宽高数据来创建网格
    /// </summary>
    /// <param name="height"></param>
    /// <param name="widght"></param>
    public void CreateMesh(int height,int widght)
    {
        if (widght == 0 || height == 0)
        {
            return;
        }
        ClearMesh();
        m_grids = new Grid[widght, height];
        for (int i = 0; i < widght; i++)
        {
            for (int j = 0; j < height; j++)
            {
                CreateGrid(i, j);
            }
        }
    }

    /// <summary>
    /// 根据位置创建一个基本的Grid物体
    /// </summary>
    /// <param name="row">x轴坐标</param>
    /// <param name="column">y轴坐标</param>
    public void CreateGrid(int row,int column)
    {
        GameObject go = GameObject.Instantiate(gridPre, parentTran);
        Grid grid = go.GetComponent<Grid>();

        float posX = startPos.x + grid.gridWidght * row;
        float posZ = startPos.z + grid.girdHeight * column;
        go.transform.position = new Vector3(posX, startPos.y, posZ);
        m_grids[row, column] = grid;
        gridEvent?.Invoke(grid);
    }

    /// <summary>
    /// 删除网格地图，并清除缓存数据
    /// </summary>
    public void ClearMesh()
    {
        if (m_grids == null || m_grids.Length == 0)
        {
            return;
        }
        foreach (Grid grid in m_grids)
        {
            if (grid.gameObject != null)
            {
                Destroy(grid.gameObject);
            }
        }
        Array.Clear(m_grids, 0, m_grids.Length);
    }
}

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

public class MainRun : MonoBehaviour
{
    //获取网格创建脚本
    public GridMeshCreate gridMeshCreate;
    //控制网格元素grid是障碍的概率
    [Range(0,1)]
    public float probability;

    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.Space))
        {
            Run();
        }
    }
    private void Run()
    {
        
        gridMeshCreate.gridEvent = GridEvent;
        gridMeshCreate.CreateMesh();
    }

    /// <summary>
    /// 创建grid时执行的方法，通过委托传入
    /// </summary>
    /// <param name="grid"></param>
    private void GridEvent(Grid grid)
    {
        //概率随机决定该元素是否为障碍
        float f = Random.Range(0, 1.0f);
        Debug.Log(f.ToString());
        grid.color = f <= probability ? Color.red : Color.white;
        grid.isHinder = f <= probability;
        //模板元素点击事件
        grid.OnClick = () => {
            if (!grid.isHinder)
                grid.color = Color.blue;
        };

    }
}