unity3d开发游戏 数据持久化

目录

1.BinaryWriter扩展，GameDataWriter

2.BinaryReader扩展，GameDataReader

3.基础组件PersistableObject

4.持久化存储管理 PersistentStorage

5.持久化存储调用Demo

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微软已经封装了二进制读写，在System.IO下的BinaryWriter和BinaryReader

 

在unity内扩展Quaternion、Vector3的读写

1.BinaryWriter扩展，GameDataWriter

using System.IO;
using UnityEngine;

public class GameDataWriter {

	BinaryWriter writer;

	public GameDataWriter (BinaryWriter writer) {
		this.writer = writer;
	}

	public void Write (float value) {
		writer.Write(value);
	}

	public void Write (int value) {
		writer.Write(value);
	}

	public void Write (Quaternion value) {
		writer.Write(value.x);
		writer.Write(value.y);
		writer.Write(value.z);
		writer.Write(value.w);
	}

	public void Write (Vector3 value) {
		writer.Write(value.x);
		writer.Write(value.y);
		writer.Write(value.z);
	}
}

如果是保存颜色

	public void Write (Color value) {
		writer.Write(value.r);
		writer.Write(value.g);
		writer.Write(value.b);
		writer.Write(value.a);
	}

 

2.BinaryReader扩展，GameDataReader

using System.IO;
using UnityEngine;

public class GameDataReader {

	BinaryReader reader;

	public GameDataReader (BinaryReader reader) {
		this.reader = reader;
	}

	public float ReadFloat () {
		return reader.ReadSingle();
	}

	public int ReadInt () {
		return reader.ReadInt32();
	}

	public Quaternion ReadQuaternion () {
		Quaternion value;
		value.x = reader.ReadSingle();
		value.y = reader.ReadSingle();
		value.z = reader.ReadSingle();
		value.w = reader.ReadSingle();
		return value;
	}

	public Vector3 ReadVector3 () {
		Vector3 value;
		value.x = reader.ReadSingle();
		value.y = reader.ReadSingle();
		value.z = reader.ReadSingle();
		return value;
	}
}

3.基础组件PersistableObject

using UnityEngine;

[DisallowMultipleComponent]
public class PersistableObject : MonoBehaviour {

	public virtual void Save (GameDataWriter writer) {
		writer.Write(transform.localPosition);
		writer.Write(transform.localRotation);
		writer.Write(transform.localScale);
	}

	public virtual void Load (GameDataReader reader) {
		transform.localPosition = reader.ReadVector3();
		transform.localRotation = reader.ReadQuaternion();
		transform.localScale = reader.ReadVector3();
	}
}

4.持久化存储管理 PersistentStorage

using System.IO;
using UnityEngine;

public class PersistentStorage : MonoBehaviour {

	string savePath;

	void Awake () {
		savePath = Path.Combine(Application.persistentDataPath, "saveFile");
		Debug.Log("savePath:"+ savePath);
	}

	public void Save (PersistableObject o) {
		using (
			var writer = new BinaryWriter(File.Open(savePath, FileMode.Create))
		) {
			o.Save(new GameDataWriter(writer));
		}
	}

	public void Load (PersistableObject o) {
		using (
			var reader = new BinaryReader(File.Open(savePath, FileMode.Open))
		) {
			o.Load(new GameDataReader(reader));
		}
	}
}

5.持久化存储调用Demo

using System.Collections.Generic;
using UnityEngine;

public class Game : PersistableObject {

	public PersistableObject prefab;

	public KeyCode createKey = KeyCode.C;
	public KeyCode newGameKey = KeyCode.N;
	public KeyCode saveKey = KeyCode.S;
	public KeyCode loadKey = KeyCode.L;

	public PersistentStorage storage;

	List objects;

	void Awake () {
		objects = new List();
	}

	void Update () {
		if (Input.GetKeyDown(createKey)) {
			CreateObject();
		}
		else if (Input.GetKeyDown(newGameKey)) {
			BeginNewGame();
		}
		else if (Input.GetKeyDown(saveKey)) {
			storage.Save(this);
		}
		else if (Input.GetKeyDown(loadKey)) {
			BeginNewGame();
			storage.Load(this);
		}
	}

	void BeginNewGame () {
		for (int i = 0; i < objects.Count; i++) {
			Destroy(objects[i].gameObject);
		}
		objects.Clear();
	}

	void CreateObject () {
		PersistableObject o = Instantiate(prefab);
		Transform t = o.transform;
		t.localPosition = Random.insideUnitSphere * 5f;
		t.localRotation = Random.rotation;
		t.localScale = Vector3.one * Random.Range(0.1f, 1f);
		objects.Add(o);
	}

	public override void Save (GameDataWriter writer) {
		writer.Write(objects.Count);
		for (int i = 0; i < objects.Count; i++) {
			objects[i].Save(writer);
		}
	}

	public override void Load (GameDataReader reader) {
		int count = reader.ReadInt();
		for (int i = 0; i < count; i++) {
			PersistableObject o = Instantiate(prefab);
			o.Load(reader);
			objects.Add(o);
		}
	}
}

参考https://zhuanlan.zhihu.com/p/208321484