Unity3D 保存游戏的几种方式

1. playerpref

官方文档：
https://docs.unity3d.com/ScriptReference/PlayerPrefs.html
保存位置：
http://blog.csdn.net/william_lv/article/details/39520367

2. 保存类

定义一个Save类，当想保存游戏的时候，创建一个类，并赋值。然后存储。当想读取游戏是，先读取文件并生成一个类，然后再赋值到游戏属性。

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using System.Collections; using System.Collections.Generic; using UnityEngine;   [System.Serializable] public class Save{       public List<int> livingTargetPositions = new List<int>();     public List<int> livingMonsterTypes = new List<int>();       public int shootNum = 0;     public int score = 0; }  //创建Save对象并存储当前游戏状态信息     private Save CreateSaveGO()     {         //新建Save对象         Save save = new Save();         //遍历所有的target         //如果其中有处于激活状态的怪物，就把该target的位置信息和激活状态的怪物的类型添加到List中         foreach (GameObject targetGO in targetGOs)         {             TargetManager targetManager = targetGO.GetComponent<TargetManager>();             if (targetManager.activeMonster != null)             {                 save.livingTargetPositions.Add(targetManager.targetPosition);                 int type = targetManager.activeMonster.GetComponent<MonsterManager>().monsterType;                 save.livingMonsterTypes.Add(type);             }         }         //把shootNum和score保存在Save对象中         save.shootNum = UIManager._instance.shootNum;         save.score = UIManager._instance.score;         //返回该Save对象         return save;     } //通过读档信息重置我们的游戏状态（分数、激活状态的怪物）     private void SetGame(Save save)     {         //先将所有的targrt里面的怪物清空，并重置所有的计时         foreach(GameObject targetGO in targetGOs)         {             targetGO.GetComponent<TargetManager>().UpdateMonsters();         }         //通过反序列化得到的Save对象中存储的信息，激活指定的怪物         for(int i = 0; i < save.livingTargetPositions.Count; i++)         {             int position = save.livingTargetPositions[i];             int type = save.livingMonsterTypes[i];             targetGOs[position].GetComponent<TargetManager>().ActivateMonsterByType(type);         }           //更新UI显示         UIManager._instance.shootNum = save.shootNum;         UIManager._instance.score = save.score;         //调整为未暂停状态         UnPause();     }

2.1. 保存到二进制文件

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using System.IO; using System.Runtime.Serialization.Formatters.Binary; //二进制方法：存档和读档 private void SaveByBin() { //序列化过程（将Save对象转换为字节流） Save save = CreateSaveGO();  //创建Save对象并保存当前游戏状态 BinaryFormatter bf = new BinaryFormatter(); //创建一个二进制格式化程序  FileStream fileStream = File.Create(Application.dataPath + "/StreamingFile" + "/byBin.txt"); //创建一个文件流 bf.Serialize(fileStream, save); //用二进制格式化程序的序列化方法来序列化Save对象,参数：创建的文件流和需要序列化的对象    fileStream.Close(); //关闭流 //如果文件存在，则显示保存成功 if (File.Exists(Application.dataPath + "/StreamingFile" + "/byBin.txt")) { UIManager._instance.ShowMessage("保存成功"); } }   private void LoadByBin() {  if(File.Exists(Application.dataPath + "/StreamingFile" + "/byBin.txt")) { //反序列化过程 //创建一个二进制格式化程序 BinaryFormatter bf = new BinaryFormatter(); //打开一个文件流 FileStream fileStream = File.Open(Application.dataPath + "/StreamingFile" + "/byBin.txt", FileMode.Open);  //调用格式化程序的反序列化方法，将文件流转换为一个Save对象 Save save = (Save)bf.Deserialize(fileStream); fileStream.Close(); //关闭文件流 SetGame(save); UIManager._instance.ShowMessage(""); }  else { UIManager._instance.ShowMessage("存档文件不存在"); } }

2.2..JSON

需要使用第三方库 LitJson.dll

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using LitJson;     //JSON:存档和读档     private void SaveByJson()     {         Save save = CreateSaveGO();         string filePath = Application.dataPath + "/StreamingFile" + "/byJson.json";         //利用JsonMapper将save对象转换为Json格式的字符串         string saveJsonStr = JsonMapper.ToJson(save);         //将这个字符串写入到文件中         //创建一个StreamWriter，并将字符串写入文件中         StreamWriter sw = new StreamWriter(filePath);         sw.Write(saveJsonStr);         //关闭StreamWriter         sw.Close();           UIManager._instance.ShowMessage("保存成功");     }       private void LoadByJson()     {         string filePath = Application.dataPath + "/StreamingFile" + "/byJson.json";         if(File.Exists(filePath))         {             //创建一个StreamReader，用来读取流             StreamReader sr = new StreamReader(filePath);             //将读取到的流赋值给jsonStr             string jsonStr = sr.ReadToEnd();             //关闭             sr.Close();               //将字符串jsonStr转换为Save对象             Save save = JsonMapper.ToObject<Save>(jsonStr);             SetGame(save);             UIManager._instance.ShowMessage("");         }         else         {             UIManager._instance.ShowMessage("存档文件不存在");         }     }

2.3.. XML

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using System.Xml;  //XML：存档和读档     private void SaveByXml()     {         Save save = CreateSaveGO();         //创建XML文件的存储路径         string filePath = Application.dataPath + "/StreamingFile" + "/byXML.txt";         //创建XML文档         XmlDocument xmlDoc = new XmlDocument();         //创建根节点，即最上层节点         XmlElement root = xmlDoc.CreateElement("save");         //设置根节点中的值         root.SetAttribute("name", "saveFile1");           //创建XmlElement         XmlElement target;         XmlElement targetPosition;         XmlElement monsterType;           //遍历save中存储的数据，将数据转换成XML格式         for(int i = 0; i < save.livingTargetPositions.Count; i++)         {             target = xmlDoc.CreateElement("target");             targetPosition = xmlDoc.CreateElement("targetPosition");             //设置InnerText值             targetPosition.InnerText = save.livingTargetPositions[i].ToString();             monsterType = xmlDoc.CreateElement("monsterType");             monsterType.InnerText = save.livingMonsterTypes[i].ToString();               //设置节点间的层级关系 root -- target -- (targetPosition, monsterType)             target.AppendChild(targetPosition);             target.AppendChild(monsterType);             root.AppendChild(target);         }           //设置射击数和分数节点并设置层级关系  xmlDoc -- root --(target-- (targetPosition, monsterType), shootNum, score)         XmlElement shootNum = xmlDoc.CreateElement("shootNum");         shootNum.InnerText = save.shootNum.ToString();         root.AppendChild(shootNum);           XmlElement score = xmlDoc.CreateElement("score");         score.InnerText = save.score.ToString();         root.AppendChild(score);           xmlDoc.AppendChild(root);         xmlDoc.Save(filePath);           if(File.Exists(Application.dataPath + "/StreamingFile" + "/byXML.txt"))         {             UIManager._instance.ShowMessage("保存成功");         }     }         private void LoadByXml()     {         string filePath = Application.dataPath + "/StreamingFile" + "/byXML.txt";         if(File.Exists(filePath))         {             Save save = new Save();             //加载XML文档             XmlDocument xmlDoc = new XmlDocument();             xmlDoc.Load(filePath);               //通过节点名称来获取元素，结果为XmlNodeList类型             XmlNodeList targets = xmlDoc.GetElementsByTagName("target");             //遍历所有的target节点，并获得子节点和子节点的InnerText             if(targets.Count != 0)             {                 foreach(XmlNode target in targets)                 {                     XmlNode targetPosition = target.ChildNodes[0];                     int targetPositionIndex = int.Parse(targetPosition.InnerText);                     //把得到的值存储到save中                     save.livingTargetPositions.Add(targetPositionIndex);                       XmlNode monsterType = target.ChildNodes[1];                     int monsterTypeIndex = int.Parse(monsterType.InnerText);                     save.livingMonsterTypes.Add(monsterTypeIndex);                 }             }                           //得到存储的射击数和分数             XmlNodeList shootNum = xmlDoc.GetElementsByTagName("shootNum");             int shootNumCount = int.Parse(shootNum[0].InnerText);             save.shootNum = shootNumCount;               XmlNodeList score = xmlDoc.GetElementsByTagName("score");             int scoreCount = int.Parse(score[0].InnerText);             save.score = scoreCount;               SetGame(save);             UIManager._instance.ShowMessage("");           }         else         {             UIManager._instance.ShowMessage("存档文件不存在");         }     }