NHL 21 .mcd models (PS4)

[Beedy]

Does anyone know more about the mcd format used by EA? Models are packed inside the rsf format and it is possible to extract them with the rsf.bms script. I managed to make a Noesis script to view the models, but reading the skeletons is hard for me and I don't know how to proceed with them. Vertex weights are stored in a table that starts with the tag TIEW in mcd and skeleton data in FRGS in .skel file. I would appreciate any kind of help to import the skeletons into noesis. 

Preview in Noesis:

https://imgur.com/a/o2dQvCl

fmt_NHL21_mcd.py rsf.bms.zip nhl21model.zip

[Durik256]

3 hours ago, Beedy said:

skeletons into noesis. 

I researched the *skel file structure and made a plugin.

*(keep reading nodes recursively (using the number of children value) until they run out)

structure:

Spoiler

RSF/00, 0, 48, 0 
FRGS, 0, chunkSize, chunkDataofs


UINT lenLabel
BYTE[lenLabel+1] label + /0
UINT unk(4)
UINT lenName
BYTE[lenName] name
BYTE[6] unks (0, 0, 0, 16, 0, 0/1-flag_have_item) 

if have_item:
    UINT unk(2)
    UINT numItem
    for x in range(numItem):
        UINT unk(30259)
        UINT unk(1)
        UINT lenLabel
        BYTE[lenLabel+1] label + /0
        VEC3(3_float) item (translate or rotate or scale)

UINT unk(2)
BYTE unk(1)
if SGNodeGroup:
    pass

if SGNodeLocator:
    UINT unk(1)
    VEC3(3_float) unk
    
if SGNodeTransform:
    UINT unk(1)
    MAT4(16_float) local_mat
    
if SGNodeJoint:
    UINT unk(1)
    MAT4(16_float) local_mat
    UINT unk(2)
    MAT4(16_float) unk_mat
    MAT4(16_float) world_mat
    MAT4(16_float) unk_mat
    UINT unk(0)
    
UINT numChild

 

I quickly looked at the TIEW chunk, it seems to have this structure:

BYTE[4] label(TIEW)
UINT unk(2)
UINT chunkSize
UINT dataOfs
UINT numBLock?

for x in range(numBLock):
	UINT index
	UINT bonePerVert
	UINT numElem
	float[numElem*bonePerVert] weights
	ushort[numElem*bonePerVert] bone_indices

 

Edited August 5, 2024 by Durik256

[Beedy]

Thank you! this helps me a lot. 🙂

[Durik256]

28 minutes ago, Beedy said:

Thank you! this helps me a lot. 🙂

also for weights to work correctly, as bones you need to use only "SGNodeJoint"

I didn’t try to understand your code, I just integrated my code into your plugin.

I also added the 'readSkel' flag to the mesh plugin. if it is 'True' then it will find the first *skel in the mesh folder and download it.

I also added the readMesh flag to the skeleton plugin. if it is "True" then it will find all *mcd's in the skeleton folder and load them.

*(do not combine both of these methods)

your plugin (added weights and skeleton loading (optional): fmt_NHL21_mcd.py

my skeleton plugin: fmt_skel_nhl21.py

[Beedy]

Awesome! Many thanks for this! 🙏