Summary - Save/Load
- Game Development course
- Advanced
- Lesson 24/71
- 4 min
Reinforce Save/Load usage with a summary task.
Summary: Save and Load Systems
In this group, you learned the spectrum of data persistence: PlayerPrefs for lightweight preferences, JsonUtility for serialization, Application.persistentDataPath for safe cross-platform file paths, and versioning for backward compatibility.
// Complete save lifecycle
string json = JsonUtility.ToJson(saveData);
File.WriteAllText(filePath, json);Assembling these components establishes a resilient save/load architecture across desktop and mobile platforms alike.
Practice Save and load system review
Define a Start method. Inside, declare string durum = "Kayit sistemi aktif"; and print it to the console with Debug.Log(durum);.
Starter code
using UnityEngine;
public class SaveLoadSummary : MonoBehaviour
{
// Start icinde durum degiskenini tanimla ve yazdir
}Sample solution
using UnityEngine;
public class SaveLoadSummary : MonoBehaviour
{
void Start()
{
string durum = "Kayit sistemi aktif";
Debug.Log(durum);
}
}Expected output
Kayit sistemi aktif
Questions and answers
Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.
1 What is the correct sequence of operations in a complete save and load pipeline in Unity?
- PlayerPrefs.SetInt -> Compile GPU Shader -> File.ReadAllText
- Prepare Data Object -> Serialize with ToJson -> Write to persistentDataPath File Correct answer
- Close StreamWriter -> Rename File -> PlayerPrefs.DeleteAll
- Delete File -> JsonUtility.FromJson -> PlayerPrefs.Save
Explanation: In the save pipeline, data is first gathered into an object, serialized to JSON text via JsonUtility, and written to a file under persistentDataPath.
2 Verify file existence
if (File.____(saveFilePath)) { LoadGameData(); }if (File.Exists(saveFilePath)) { LoadGameData(); }Explanation: The File.Exists method is used to confirm the file exists before attempting to load it.
3 Save/Load summary match
| Term | Meaning |
|---|---|
PlayerPrefs |
Quick settings and preference storage |
JsonUtility |
Serialization between object and text |
persistentDataPath |
Cross-platform save directory |
saveVersion |
Compatibility tracking for save data |