Collision outside the grid?

[hedcrusha 0]

Hi ive made a few buildings and have set the geo lod's up and they work. But i have to keep the model inside the grid on O2! Im just wondering if anyone knows how to get arma or O2 to detect colloisions outside the grid?!

[charonos 0]

Check your geo lod, it can't be the grid-relative size only,

i have made huge skyscrapers that also work "outside the grid" as you call it. But i have run into that mistake too with big models, i suspect it is due to using one big polygon as geo lod, that sometimes creates errors.

Re-doing the geo lod has fixed it sometimes.

[charonos 0]

Check your geo lod, it can't be the grid-relative size only,

i have made huge skyscrapers that also work "outside the grid" as you call it. But i have run into that mistake too with big models, i suspect it is due to using one big polygon as geo lod, that sometimes creates errors.

Re-doing the geo lod has fixed it sometimes.

[hedcrusha 0]

Ive made a couple of skyskrapers and had that prob. Would making several geo boxes help rather than copying the building and using that as the geo lod?

Thanks for the help btw.

[DaSquade 0]

General rule, since OFP and sadly still in ArmA afaik, is your model can be bigger then 65m in all directions. To be save, keep it under 60m.

Also keep in mind the complexity and amount of components can be more then 128.

Feel free to correct me.

Bigger or more component made models need to be split up (and need to be script build to one piece).

EDIT: Well, to clerify, i meant there is a limit for geo/fire/roadway etc lods. So this doesn't mean res lods can be bigger, but most of the time you will want to have it covered by geo/fire anyway...

[charonos 0]

Well, i am not sure about this limitation with simple models.

I am aware of Gnat's old OFP carrier issues, but with low poly

cubic houses, with most buildings i have made, i have no issues with geo or roadway (rooftop) LODs in any way and they are 215m high! If there is issues with the geo LOD, the problem can be solved by re-doing the geo LOD, checking normal orientation (not sure if this matters) and component name presence.

@ hedcrusha : Did you try to re-do the geo LOD?

I think the limitation is bound mainly to the roadway lod area covered to be less than about 60x60 meters.

[hedcrusha 0]

well ive been at work and just got in so havent tried it out.

Ive made the same as you charonos with regards to buildings BUT i have made all the buildings one p3d, So when you place the building in the editor it has about 20-40 buildings in it. Like a city in otherwords. Their just standard blocks like what you have used but they only seem to work inside the grid as ive kept then the size i want and the collision works towards the middle so then after hours of scouwering the net on this i saw somthing mentioning about the 0.0000 grid reference. So then i decided to resize it to be inside the grid and it worked.

[charonos 0]

Ah i see, that explains something. The dimensions of the single .p3d

must have been quite large and the .p3d in itself much more complex than a single cube. Interesting issue.

The main thing is that you got it working finally.

[hedcrusha 0]

Aye i did but not to scale as my city is like a a bunch of match boxes lol. Well just had a quick try at what you did. Made a cube 215m high and 50x50 wide added a road on top and works beutifully. I guess the city im trying to do is to complexe for O2. But guess ill have to try and find the limit as to how many buildings(cubes) i can have in a single p3d. Gtg now so ill try again tommos. Ill let you know how it went.

Thanks again.