don't destroy on load unity

Unity is an excellent tool for developing games, and it has many built-in features that can make the process easier and more efficient. One of these features is the ability to load and unload scenes, which can be useful for breaking up a game into smaller parts or for loading and unloading assets on demand. However, if you're not careful, loading and unloading scenes can also cause problems, especially if you're not properly handling objects that should persist across scenes. In this article, we'll explore the \"Don't Destroy On Load\" feature in Unity that addresses this issue.

The Problem

When Unity loads a new scene, it destroys all of the objects in the current scene and creates new ones in the new scene. Normally, this is fine, since most objects aren't meant to persist across scenes. However, if you have objects in your scene that should persist across scenes, such as managers or singletons, then reloading the scene can cause problems. For example, imagine you have a game manager that keeps track of the player's progress and other important data. If you don't handle the manager correctly when loading a new scene, the manager will be destroyed and recreated every time, and all of its data will be lost.

The Solution

The \"Don't Destroy On Load\" feature in Unity provides a simple solution to this problem. When you mark an object as \"Don't Destroy On Load,\" it will persist across scene changes and won't be destroyed or recreated. This means that any data or functionality associated with the object will remain intact, even when you load a new scene. To use this feature, simply add the following line of code to the object's script:```C#DontDestroyOnLoad(gameObject);```This line of code tells Unity to not destroy the object associated with the script when a new scene is loaded.

Examples

Here are some examples of objects that might need to be marked as \"Don't Destroy On Load\":- Game managers: As mentioned earlier, if you have a game manager that keeps track of the player's progress, you'll want to make sure it persists across scene changes.- Audio objects: If you have a background music track that should play continuously throughout your game, you'll want to mark the audio object as \"Don't Destroy On Load\" so it doesn't get interrupted when a new scene is loaded.- UI elements: If you have a persistent set of UI elements, such as a score display or a health bar, you might want to mark them as \"Don't Destroy On Load\" so they don't get recreated every time a new scene is loaded.

Conclusion

The \"Don't Destroy On Load\" feature in Unity is a valuable tool for managing objects that should persist across scene changes. By using this feature, you can ensure that important data and functionality remain intact even when you load a new scene. Just be sure to use it sparingly, as marking too many objects as \"Don't Destroy On Load\" can use up memory and cause performance issues.