[X360] Star Wars Battlefront III pre-alpha (*.rax)

[Acewell]

I'm trying to convert the rax models from this cancelled Free Radical game and i can get the geometry but i'm having trouble finding the UV data.
A plugin for Noesis, 3DOC or Unwrap3d would be best down the road but Hex2obj will do for now.

This is my progress so far in Hex2obj


h2o file for this submesh

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0x132E0 14841
Vb1
16 99
0x600 3849
120400
0x0 255

Sample
*removed problem solved*

i thought at first this was using half float UVs with short all for which there is no switch in H2O or there was a UV block starting around 28e2e with a size of 10 but no dice. I can upload more samples if needed.
Any help here is appreciated.

[JakeGreen]

Um the Uv maps could be stored in another file but i don't think it would be and after looking through the files it also looks like the bones for almost all of the characters are stored in their main OB.rax file as well.

Also it looks like you missed the hair as well in the file not sure if it's there or something they attach to the model via code but it doesn't look like it on the model

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http://i284.photobucket.com/albums/ll18/DarthNihilus03/vlcsnap-2016-01-23-01h12m44s108_zpshqkzsfmk.png~original

[Acewell]

The models aren't good for much without UVs and textures. i'll worry about the other submeshes in the file when i can get one completely working.

I think its worth mentioning that there are a lot of Havok engine source references in the xex file, so if anyone is familiar with meshes made for Havok your input is welcome too.

[shakotay2]

At 0xF690 it looks like uvs; size UVB= 4, (WordUV for preview, SaveAs mesh: ShortALL):

ob_rax_uvs.jpg

i thought at first this was using half float UVs with short all for which there is no switch in H2O

One may think it's simple to add a combination such as verts shorts, uvs HF, but it would be more effort for me
than just saving the mesh in two ways: 1) Short_All 2) HF_all and then merge the two objs (as you know) since those formats are very rare, imho.

(But if you told/proved me this combination's some kind of "standard" for console games I'd think about it. )
btw: there was a test version, iirc, where ShortAll was replaced by Short/HF or something like that.
(Is somewhere on my old PC.)

[Acewell]

Awesome thanks!
I can see where that UV block start address is possibly stored at 0x5b6

[alvaropre]

I am trying to extract models out of the game but it seems I am not used to H2O yet. Analysing the ob.rax posted above I see moreless where face indices and vertices start but with other models I tried I failed.

This is what I get from Grievous model.



I am almost sure that faces indices address starts at 24440 but I can't figure out where it ends.
Also I can't see a pattern regarding to vertices start.

Maybe someone in this forum can give some tips, I've already read the H2O tutorial and I am really interested in this game models extraction..

[Acewell]

GenGrievousSWBF3.png

You were pretty close but this file has a different FVFsize and your vertice start address was off.

h2o file

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0x24440 12006
Vb1
24 99
0x2840 4935
120400
0x1F6F0 4

as for tips i can only speak from a non programmer point of view, this is what i posted in another thread
viewtopic.php?p=113195#p113195

[Wobble]

[out]

[Wobble]

[out]

[Acewell]

i had to reduce the face count to 2256 to get a clean mesh preview

HansoloST.png

first submesh h2o (lower body)

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0x17600 2256
Vb1
24 99
0x3B80 671
120400
0x148F0 4

next submesh h2o (right arm)

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0x187A0 1762
Vb1
24 99
0x7A68 522
120400
0x1536C 4

I'm guessing 4 or 5 submeshes based on the number of texture call blocks at the start of the file.
The formats i have seen that store data like this usually have a table with offsets somewhere in the file.

[JakeGreen]

This here is the reason we need a noesis script even if we don't have texture support yet cause having to get out the different submeshs than the UV maps as a different .obj is just to time consuming and annoying.

[shakotay2]

cause having to get out the different submeshs than the UV maps as a different .obj is just to time consuming and annoying.

not more time consuming and annoying than performing a full format analysis - besides that you do the latter once for all models, admitted

But since I try it for one model only in most cases I prefer the quick 'n dirty method

[Wobble]

[out]

[Wobble]

[out]

[JakeGreen]

Got it.
I didn't understand why the file was called hansolo_stormtrooper until now.

solo.JPG

Yeah there is a challenge mission in the game to escape the death star and luke and han stay in their stormtrooper gear as they get to the falcon.

Any chance you could give a link to the model?