unity文件写入与读取

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEditor;

using UnityEngine.SceneManagement;

using System;

using System.IO;

using System.Runtime.InteropServices;

public class GridEditor : EditorWindow

{

    public static string _gridPath = "Assets/Scence/Data/Grid/";

    public static float _perGridSize = 0.5f;

    public static float _gridX = ;

    public static float _gridZ = ;

    public static float _bottomHeight = -;

    public static float _hafRayLength = ;

    [MenuItem("Tools/GenerateGrid")]

    private static void GenerateGrid()

    {

        Scene scene = SceneManager.GetActiveScene();

        if (!scene.IsValid())

        {

            EditorUtility.DisplayDialog("", "", "OK");

            return;

        }

        string heightPath = _gridPath + scene.name + ".bytes";

        if (File.Exists(heightPath)) File.Delete(heightPath);

        FileStream fs_h = new FileStream(heightPath, FileMode.CreateNew);

        BinaryWriter bw_h = new BinaryWriter(fs_h);

        float haf = _perGridSize * 0.5f;

        float height = _bottomHeight * 100f;

        Vector3 rayDir = Vector3.down;

        Vector3 rayOrig = Vector3.zero;

        int maskLayerHeight = LayerMask.GetMask("Ground");

        RaycastHit rayHit;

        bool isHit = false;

        for (float z = haf; z < _gridX + haf; z += _perGridSize)

        {

            for (float x = haf; x < _gridZ + haf; x += _perGridSize)

            {

                rayOrig.Set(x, _hafRayLength, z);

                height = _bottomHeight * 100f;

                isHit = Physics.Raycast(rayOrig, rayDir, out rayHit, _hafRayLength * , maskLayerHeight);

                if (isHit)

                {

                    height = (float)Math.Round(rayHit.point.y, ) * 100f;

                    height = Mathf.Max(height, _bottomHeight * 100f);

                    height = Mathf.Min(height, -_bottomHeight * 100f);

                }

                bw_h.Write((short)height);

            }

        }

        bw_h.Flush();

        bw_h.Close();

        fs_h.Close();

    }

    private static short[] heightData;

    [MenuItem("Tools/ReadGrid")]

    private static void ReadGrid()

    {

        TextAsset heightAsset = (TextAsset)GetByteAsset("GridTest");

        if (heightAsset)

        {

            heightData = new short[(int)(_gridX / _perGridSize) * (int)(_gridZ / _perGridSize)];

            System.IntPtr heightPtr = Marshal.UnsafeAddrOfPinnedArrayElement(heightAsset.bytes, );

            Marshal.Copy(heightPtr, heightData, , heightData.Length);

        }

        else

        {

            Debug.Log("read height Asset error");

            return;

        }

        for (int j = ; j < heightData.Length; j++)

        {

            //Debug.Log(heightData[j] * 0.01f);

        }

    }

    private static UnityEngine.Object GetByteAsset(string resName, string ext = ".bytes")

    {

        string resPath = string.Format("{0}{1}" + ext, _gridPath, resName);

        UnityEngine.Object obj = AssetDatabase.LoadAssetAtPath(resPath, typeof(UnityEngine.Object));

        return obj;

    }

}