Application LoadLevel() not working as expected

Questions & Answers
1

I have a quick prototype that I’ve whipped up in Unity but I’m having issues with scene transitions. I have a Game Scene and a Start Scene, akin to those flash game loading screens that have instructions or whatever. The issue I’m having is when I use Application.LoadLevel to load the game scene from the starting scene, game objects don’t seem to be initialized and my game crashes with null exceptions. When I run the game scene from the editor everything works fine. What am I doing wrong?

My code pretty much is this:

  if (GUI.Button(new Rect(100.0f, 50.0f, 100.0f, 50.0f), "Play Defending"))
        {
            GameController.clientColour_ = PlayerEnum.Blue;
            Application.LoadLevel("gameScene");
        }

        if (GUI.Button(new Rect(210.0f, 50.0f, 100.0f, 50.0f), "Play Attacking"))
        {
            GameController.clientColour_ = PlayerEnum.Red;
            Application.LoadLevel("gameScene");
        }
3

To have objects persist between scenes you need to use Application.LoadLevelAdditive. Your null reference exceptions are likely coming from GameController not persisting.

4

You have to wait till the next frame before you can access the loaded level objects and properties.

You can do that in a coroutine :

Enumerator LoadLevelRoutine(string levelName)
{
    Application.LoadLevel(levelName);
    yield return null; // let a frame pass

    // now you can access the scene objects and properties
}

Then, in your code, just do :

StartCoroutine(LoadLevelRoutine("my level"));
2

Here try this:

if (GUI.Button(new Rect(100.0f, 50.0f, 100.0f, 50.0f), “Play Defending”))

{

GameController.clientColour_ = PlayerEnum.Blue;

Application.LoadLevel(1);

}

if (GUI.Button(new Rect(210.0f, 50.0f, 100.0f, 50.0f), “Play Attacking”))

{

GameController.clientColour_ = PlayerEnum.Red;

Application.LoadLevel(1);
//in build settings look at the scene you want to load to and set the number of the scene to that loadlevel

}

that should work