Props fall thru displacement'd ground

I'm trying to place props on the ground, such as tires, boxes, cans, etc. These are placed on ground that has been displaced - other words, there are hills and such with the props on them. As I compile the map, I see an error that says the model has fallen through the map.

Is there something I need to do to the prop to keep it on the ground and not fall through...and also be able to pick it up with the phys gun and throw it around later?

Did a search, but nothing really answered this for me.

Did you put a solid brush underneath the displacement maps? HL2 seems to prefer that, but it isn't exactly required.

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Breaking the laws of mapping since 2003 and doing a damn fine job at it

No, you don't have to have solid brushes underneath every dismap, though it is handy for VIS (and therefor also leak-preventing) purposes.

As for falling through, perhaps you placed them too close to the ground (or a bit in it)? That's the only reason I can think of. What prop entity did you use?
Does it only happen on your system or also when others play your map btw?

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Create-ivity - a game development blog

Could you show us a pic of it?

And check the console (when you load the map) for red text and see if there is a physics collision probelm or something.

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Posting And You

Make sure your props aren't inside the displacement brush perhaps?

For vis purposes, Captain P, I think you're supposed to actually make
the displacement NODRAW texture, aside from the surface you walk on
obviously.

Nodraw is an option, although it created some funky errors sometimes on my maps.

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:: Forceflow.be :: Nuclear Dawn developer

Afaik, that doesn't matter - those faces are discarded anyway. Thing is, dismaps aren't processed during the VIS process, just like entities, so you'd better have some solid brushwork behind it. My map mudanchee is really simple when it comes to solid geometry - but there's a dismap layer all over those brushes, so it looks quite natural. But it's a 30 min. compile, which I believe really shows the effect of VIS on compile times. :smile:

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Create-ivity - a game development blog

G.Ballblue said:
Did you put a solid brush underneath the displacement maps? HL2 seems to prefer that, but it isn't exactly required.

That worked. Thanks.

DocRock said:
I'm trying to place props on the ground, such as tires, boxes, cans, etc. These are placed on ground that has been displaced - other words, there are hills and such with the props on them. As I compile the map, I see an error that says the model has fallen through the map.

Is there something I need to do to the prop to keep it on the ground and not fall through...and also be able to pick it up with the phys gun and throw it around later?

Did a search, but nothing really answered this for me.

i have a related question. i can shoot through displacements but i don't fall through. how do i make it that the bullet actually impacts the displaced surface ? It's a simple 6-faced brush, with 2 opposite faces displaced in parallel. Nodraw brushes wouldnt work here because i want debris from the real surface.

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These words are my diaries screaming out loud