Error when going from Scene 2 back to Scene 1

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#1

So when I go from Scene 1 to Scene 2 everything is working but when I try to go back to my first Scene its giving me this message:

NullReferenceException: Object reference not set to an instance of an object
RPG.Movement.Mover.RestoreState (System.Object state) (at Assets/Scripts/Movement/Mover.cs:98)

    }

        public void RestoreState(object state)
        {
            SerializableVector3 position =(SerializableVector3)state;
            navMeshAgent.enabled = false;
            transform.position = position.ToVector();
            navMeshAgent.enabled = true;
            GetComponent<ActionSchedular>().CancelCurrentAction();
        }

I wonder what’s the problem cause with all other Scenes its working super well.

#2

Which of those are on line 98? state could be null, navMeshAgent could be null, and the result of GetComponent<ActionSchedular>() could be null

#3

I am sorry for not mentioning the line. Its actually the one with the ActionSchedular()

#4

OK, So that means the Mover game object does not have an ActionSchedular. Can you confirm that it does?

#5

well it is the player so yes, it has a ActionSchedular.

Bildschirmfoto 2022-08-16 um 23.30.05
Bildschirmfoto 2022-08-16 um 23.30.05888Ă—130 9.7 KB

if that’s it what you meant :slight_smile:

#6

Is the Mover on the same object?

I’m not sure, but it may be possible that Mover is trying to access ActionSchedular before it’s been created

#7

Yes of course :slight_smile: The Mover Script is also on the same GameObject (Player). I am just wondering why it isn’t working for World 1. When I go back from World 3 to World 2 it is working how it should be. And it is exactly the same setup

#8

Do you have a player prefab in that scene? If the player is marked to DontDestroyOnLoad it will go from scene to scene. If you start a scene with a player prefab already in the scene (like when you are starting on a level) there will be 2 players in the scene: The one that was in the scene from the start, and the one that’s been going from scene to scene.

#9

no my game objective (player) will be destroyed after going into a new scene, there is a new prefab that will be filled with the important information that were provided over the scene change (inventory etc)

#10

OK, but this script cannot find ActionSchedular. Are there other objects in the scene that have a Mover script? Did you accidentally add one somewhere you shouldn’t have? Or forgot to remove one from an NPC?

#11

well that was actually the problem. removing the Mover.cs script from the NPC’s did the trick but the problem is, I need the Mover.cs Script for the NPC’s in order to move. Without it they can’t move. So do I only make sure, that they all have a Mover.cs AND ActionSchedular.cs Script?

#12

The AI Movement is controlled from AIController as it’s different conditional methods to patrol, or chase the player and/or dawdle around in an area effectively animates them for you. I don’t think the Mover.cs was suppose to be included on the Enemies after doing the Prefab variant creation.

Would be able to help out more if the scripts were posted :slight_smile:

#13

No, both the Player and the Enemies need Mover to function correctly.

Both the Player and the Enemies need a Mover, Fighter, and ActionScheduler script to function correctly.

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#14

Well I forgot to put some Mover.cs Scripts on some of the NPC’s that’s why he did this mistake

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#15

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