Load scenes from a Scenes folder to an array.

Questions & Answers
1

Hello, I’m new to the forums and to Unity, I am having a what I think would be a simple problem.

I have a LevelSelector class that handles the loading of various levels. In the class I would like to have an array of GameScenes / levels that are all found in a certain folder under Scenes\GameLevels

Currently my code is able to load certain levels, but it’s hard coded by name so if I ever add any more levels, I would have to constantly go back and add or remove the couple lines of code that loads that level.

Here is my code so far:

using UnityEngine;
using System.Collections;


public class LevelSelector : ButtonManagerBehavior
{
	/// <summary>
	/// Number of levels in the Application
	/// </summary>
	static int levelCount = Application.levelCount;
	
	/// <summary>
	/// Array that holds the levels from GameLevels
	/// </summary>
	GameScene[] levelArray = new GameScene[levelCount];
	
	
	/// <summary>
	/// Activate the button that will be pressed.
	/// </summary>
	/// <param name='buttonName'>
	/// Name of the button in the scene being pressed.
	/// </param>
	public override void ButtonPressed (string buttonName)
	{
		/// Switch statement that loads the approiate level based on the level name passed in.
		switch(buttonName)
		{
			/// Load level03 scene
		case "level3Button":
			Application.LoadLevel("level03");
			break;
			/// Load level04 scene
		case "level4Button":
			Application.LoadLevel("level04");
			break;
			/// Load level05 scene
		case "level5Button":
			Application.LoadLevel("level05");
			break;
			/// Go back to the main menu
		case "backToMenu":
			Application.LoadLevel("MainMenuGUITest");
			break;
		default:
			/// Attempt to load level scene with the same name as the buttonName param passed in
			base.ButtonPressed(buttonName);
			break;
		}

	}
}

As you can see I haven’t gotten very far. The switch statement is there to let me load the levels by their name, but I would like to have the levels in the GameLevels folder in the array levelArray.

Any help or insight will be very much appreciated! Thank you!

2

You can load the scenes via an index in place of the name, but I think is dependent on the order they are included in the build menu, so I’m not sure if that will scratch your itch.

Another approach would be to make a class that listens for a button press and has the level name to load serialized in it, and attach an instance of it to each button. Ie, something like:

public class LevelLoaderButton : MonoBehaviour {
    [SerializeField] string levelName;

    public void OnPressed() {
        Application.LoadLevel(levelName);
    }
}