How to load a level (scene) in another scene (Open world)

Hi,

I finished building the city and the AI and other staff, Now it's the time for level designing

I don't want to create the levels inside the world for a better performance
let's say that i am going to create 10 levels each level has at least 50 Gameobjects(3d models). This means that i have 500 Disabled Gameobjects.

I am trying to figure out a way to load the level From another scene (eg: level 1) into the Main Scene(world)

So when i want to load a level l just load it's scene and after finishing it, I destroy That scene

More info:

level 1 starts in building and the rest of the mission is outside that building (in the world). So, i want to be able to load level 1 building's furniture and other staff and destroy them once the mission is finished

 

I figured it

You can use:

Code (CSharp):

1. SceneManager.LoadScene("The name of the scene", LoadSceneMode.Additive);

For better preformance (no freezing) :

Code (CSharp):

1. SceneManager.LoadSceneAsync("scene name", LoadSceneMode.Additive);