roocker666 Posted May 28 Share Posted May 28 (edited) Hi guys, I was curious about the models from this game so I analyzed some files. As we know, a lot of PS2 models don't have faces data so I decided to analyze Xbox models but for my surprise, the format is almost the same! so no faces data 😞 I don't remember an xbox model with no faces data but anyway.. This is my research: Meshes are something like this: Mesh group header unknow data Vertices count Vertices buffer Unknow buffer1 Unknow buffer2 Normals buffer UVs buffer Next Mesh gorup .. I don't know about those unknow buffers, maybe are for bone weights. Here are some pictures: Oh I forgot the sample, this is Zero(the dog), Textures are .pig but are actually .dds just change file type. Zero.rar Edited May 28 by roocker666 1 Link to comment Share on other sites More sharing options...
itrabwho Posted May 28 Share Posted May 28 It could be a list of triangle strips stored in immediate mode, XYZ coordinates followed by continue/interrupt flag (0x00800000 or just 0) Link to comment Share on other sites More sharing options...
shak-otay Posted May 28 Share Posted May 28 (edited) @roocker666: so you mean to collect/create all the submeshes automatically by a script? It would be helpful, imho, to refer to one sub meshes' data at least when presenting your structures. 2nd picture refers to your 2nd one. edit: @itrabwho: interesting thought. So the 0x800000 flag to start a new strips sequence? Edited May 28 by shak-otay Link to comment Share on other sites More sharing options...
roocker666 Posted May 28 Author Share Posted May 28 1 hour ago, itrabwho said: It could be a list of triangle strips stored in immediate mode, XYZ coordinates followed by continue/interrupt flag (0x00800000 or just 0) Yeah, PS2 models use that "Flag" to create triangles, sometimes the model is perfect but not always, you can get extra triangles in some meshes(like in my Mortal Kombat Shaolin monks post) Link to comment Share on other sites More sharing options...
roocker666 Posted May 28 Author Share Posted May 28 (edited) 1 hour ago, shak-otay said: @roocker666: so you mean to collect/create all the submeshes automatically by a script? It would be helpful, imho, to refer to one sub meshes' data at least when presenting your structures. 2nd picture refers to your 2nd one. Yeah, collect all meshes with a script. Meshes have the same format just there is a group header, in this case the model has 2 meshes groups.(at 0xFD0 and 0x39CD0). Mesh format is easy to understand, each mesh has 5 blocks or buffers, 1st is vertices, 2nd and 3rd unknow, 4th Normals and 5th Uvs. There is no data between blocks/buffers so one below the other. To separate meshes vertices count line is the key. So for 1st group and 1st mesh: 0xFD0: 4 bytes submesh count, 12 bytes unknow(This is mesh group1 header) 0xFE0: 80 bytes unknow data(I don't now what this is..) 0x1030: 4 bytes vert count, 12 bytes unknow(1st mesh starts here) 0x1040 vertices buffer(Float, padding 4) 0x2100 unknow buffer1 0x31c0 unknow buffer2 0x4280 Normals buffer(Float, padding 4) 0x5340 UVs buffer(Float, padding 8) --1st mesh ends at the end of UVs buffer/block Then 2nd mesh, same format(starting with vert count line) 3rd mesh(starting with vert count line) 4th mesh(starting with vert count line) etc.. It seems like all 5 blocks/buffer(in a mesh) have the same size. Probably this is more clear now, lol Edited May 28 by roocker666 1 Link to comment Share on other sites More sharing options...
driftandmiss Posted Monday at 12:57 PM Share Posted Monday at 12:57 PM Did you figure this out? I'd love to have these models Link to comment Share on other sites More sharing options...
roocker666 Posted Thursday at 06:32 AM Author Share Posted Thursday at 06:32 AM (edited) On 9/2/2024 at 6:57 AM, driftandmiss said: Did you figure this out? I'd love to have these models The problem is how to read all meshes, so I added an extra line before each mesh. With that I can collect all meshes but without bones (My knowledge about extracting bones is very limited, lol) Edited Thursday at 06:36 AM by roocker666 Link to comment Share on other sites More sharing options...
Solution Durik256 Posted Friday at 02:10 PM Solution Share Posted Friday at 02:10 PM (edited) On 5/28/2024 at 10:42 PM, roocker666 said: the sample, this i made plugin fmt_bmd.py (with bones and weights 'rig') Edited Friday at 02:11 PM by Durik256 1 Link to comment Share on other sites More sharing options...
roocker666 Posted Friday at 07:28 PM Author Share Posted Friday at 07:28 PM 5 hours ago, Durik256 said: i made plugin fmt_bmd.py (with bones and weights 'rig') Nice! I was testing other characters and for some reason those show extra polygons. Here are Sally and Santa if you want to check them. I mean, is not big deal but maybe it could be easy to fix that. I noticed that some characters have the head in other file like Sally: Sally_Santa.rar Link to comment Share on other sites More sharing options...
diegozmei Posted yesterday at 12:20 AM Share Posted yesterday at 12:20 AM Tim Burton's The Nightmare Before Christmas Oogies Revenge ps2 and xbox bmd file Noesis Scripts 🤷♂️ error fix fmt_bmd.py 🤔 Link to comment Share on other sites More sharing options...
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