NullReferenceException

[teknoman117]

NullReferenceException
at (wrapper managed-to-native) UnityEngine.MonoBehaviour:StopCoroutine (string)
at PQS.ResetSphere () [0x00000] in :0
at PSystemSetup.SetPQSInactive () [0x00000] in :0
at PSystemSetup.SetMainMenu () [0x00000] in :0
at PSystemSetup.OnLevelWasLoaded (Int32 level) [0x00000] in :0

Currently the only exception occurring, right up until a ship is launched. Then the whole PQS system dies for all planets, and the game dies in a fit of exceptions from almost every component of the game.

[teknoman117]

I think this is caused by some subtle difference between GameObjects that are a prefab and GameObjects that are created at runtime. This occurs whether we create the PQS from scratch or clone it from the existing prefab of another world. I think the answer to this problem will be how do you create a prefab at runtime? The PrefabUtility class is in the UnityEditor namespace, which isn't available at runtime.

[BryceSchroeder]

Well, we could start by pursing in greater depth the ways in which a prefab
could possibly be distinct from an object created at runtime.
I just can't make head or tail of the results of the bug, though (like
why it affects the whole universe and not just the planet in question)

On 29 July 2014 17:22, Nathaniel Lewis notifications@github.com wrote:

I think this is caused by some subtle difference between GameObjects that
are a prefab and GameObjects that are created at runtime. This occurs
whether we create the PQS from scratch or clone it from the existing
prefab of another world. I think the answer to this problem will be how do
you create a prefab at runtime?

—
Reply to this email directly or view it on GitHub
#2 (comment)
.

[teknoman117]

I'm fairly certain the reason that it effects the whole universe is because of the NullException - anything that would happen during that event after the PQS.ResetSphere call won't execute, because of the exception.

[teknoman117]

Caused by created PQS prefab getting deleted by garbage collection. Solved by marking our prefab as don't destroy with UnityEngine.Object.DontDestroyOnLoad()

See commit
9a0ebe8