Why don't some objects "havok settle" when you drop them?

[PJMail]

Specifically an existing mesh red toolbox (Meshes\SetDressing\Toolbox\toolbox.nif) - but a general quesstion.

 

If you craft it as an ingestible and drop it from your inventory - it hangs in the air.

 

You can drop other ingestibles (say a stimpack) and they fall - so ingestibles are governed by Havok,

 

(Crafting it as a Misc doesn't make a difference).

 

It has collision, so what else does it need that I can access via nifscope (I don't have other tools)?

 

Thanks

[greekrage]

hmmm

But its a container...

I cant test right now....but try doing a suitcase,trunk,medkit etc...

They will probably act the same...

Have you tried making new collision for it in 3dsmax with the havoc tools...(maybe its collision isnt havoc based) ?

[greekrage]

I looked at a few in nifskope...

most containers are the same so i looked at bsx flags...again the same...

Then i looked at a pool ball....and noticed it has the Dynamic flag enabled...

[PJMail]

Mmmm - Thanks Greekrage, I will give it a try.

I was trying to use in-game assets (unmodified) and wanted a 'repair kit' object.

[PJMail]

Made no difference. It must be it's collision as it is created as an immovable static container object, and that's the way it acts.

Oh well, I may have to make my own version with the correct collision - or find a different model.

[SKKmods]

I have fudged collision/physics onto floating inventory items to make them OnDrop settle in nifskope by randomly copying bhkPhysicsSystem from a similar size/mass object. There must be a proper tutorial by now tho.

[LarannKiar]

You can use this tutorial to add collision to a mesh in Nifskope (with Havok Mass, see bhkRigidBody). Inserting the physics data from another, similar object would also work.

Edited September 21, 2023 by LarannKiar

[PJMail]

Thanks everyone. I have successfully used Jonathan's excellent method to redo collision a few times, I was just hoping it was something simple that did not require a modified model.