earnest prawn
Hello everyone. Quick question, I think...
From the point you launch the executable of a Unity game, when's the earliest possible moment you can execute a line of code?
Is it simply the Awake of a MonoBehaviour within the first scene?
Is it possible to do so before the first scene is loaded?
Context doesn't matter. I'm asking this purely as a theoretical question.
sharp walrus
maybe in a static constructor
although I think that only gets invoked the first time you interact with the class
"It is called automatically before the first instance is created or any static members are referenced"
unclear
earnest prawn
hmmm. Thanks for the suggestion! Will test it.
scarlet crater
Could use RuntimeInitializeOnLoadMethodAttribute.
https://docs.unity3d.com/ScriptReference/RuntimeInitializeOnLoadMethodAttribute-ctor.html
earnest prawn
@scarlet crater Yeah, I saw that... What confused me about it is in the documentation for RuntimeInitializeOnLoadMethodAttribute, it says:
This is after the Awake method has been invoked.
https://docs.unity3d.com/ScriptReference/RuntimeInitializeOnLoadMethodAttribute.html
For an Awake method to be invoked, I assume there would need to be a MonoBehaviour, which implies that there would need to be a scene already loaded. I'm not sure. I find the verbiage used a little confusing.
scarlet crater
earnest prawn
Yeah, I saw that too. You'd think that before the scene or the splash screen is loaded, none of the Awakes would be invoked, right? But then it explicitly mentions this in the documentation:
Methods marked [RuntimeInitializeOnLoadMethod] are invoked after the game has been loaded. This is after the Awake method has been invoked.
Does that imply that Awake is called on MonoBehaviours before the scene they are contained within is even loaded?
@scarlet crater
scarlet crater
Yeah, I saw that too. You'd think that before the scene or the splash screen is ...
This most refer to the default constructor without the parameter.
earnest prawn
Ahhhh, of course. Sorry for the dumb line of questioning.
scarlet crater
The best way you know is to test it.
earnest prawn
@scarlet crater
If you're curious, here are the results using System.Diagnostics.Stopwatch.
So basically, static constructor seems to be the first point at which you can start executing code.
Stopwatch started in static constructor
SubsystemRegistration completed in 00:00:00.00
AfterAssembliesLoaded completed in 00:00:00.00
BeforeSplashScreen completed in 00:00:00.06
BeforeSceneLoaded completed in 00:00:05.07
First scene Awake completed in 00:00:00.06
First scene Start completed in 00:00:00.52