Don't Destroy On Load Script

The Don't Destroy On Load script is a code snippet that allows game objects to persist between different scenes in a Unity project.

How it works

When the DontDestroyOnLoad script is attached to a game object, it prevents the game object from being destroyed when a new scene is loaded. This is particularly useful for objects such as player characters, game managers, or persistent UI elements that should remain visible throughout the entire game.

void Awake()
{
    DontDestroyOnLoad(this.gameObject);
}

Usage

To use the Don't Destroy On Load script, simply add the script to the game object that needs to persist between scenes. This can be done by either dragging and dropping the script onto the object in the Unity editor, or by creating a new script component and attaching it through code.

Once the script is attached, the game object will persist between scenes until the script is removed, or until the game object is destroyed manually.

Potential Issues

It is important to keep in mind that objects with the DontDestroyOnLoad script attached can accumulate over time, as they are not automatically destroyed between scene changes. This can lead to memory leaks and performance issues if not managed properly.

Additionally, the DontDestroyOnLoad script may interfere with certain game mechanics or code, particularly if the script is attached to a game object that is frequently created and destroyed throughout the game.

Conclusion

Overall, the Don't Destroy On Load script is a powerful tool for game developers seeking to create persistent game objects in Unity. However, it should be used with caution and kept in mind that it may have unintended consequences if not implemented properly.