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LOCO File Format

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2008-11-05, 13:54 by Keshire
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TodX Administrator #1
Member since Oct 2008 · 16 posts · Location: San Diego
Group memberships: Administrators, Members
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Subject: LOCO File Format
Here's a basic layout of the data structure of the locomotion.loco file.


#include "standard-types.hsl"

#pragma byteorder(big_endian)
#pragma maxarray(65536)     // max that hw 5.1 will allow
#pragma maxstring(512)

typedef struct LocoEntry1Coords
{
    DWORD    Unknown;
    float    X;
    float    Y;
    float    Z;
} LocoEntry1Coords;

typedef struct LocoEntry1
{
    DWORD    Unknown0;
    char    Name[16];
    DWORD    Unknown1;    // always == 0x0820 ?
    DWORD    Unknowns2[94];
    LocoEntry1Coords    Coords[16];
} LocoEntry1;

typedef struct LocoEntry2
{
    DWORD    Unknowns1[6];
    float    Unknowns2[94];
} LocoEntry2;

typedef struct LOCO        // environment map
{
    DWORD    Unknown1;
    DWORD    Unknown2;
    DWORD    LocoEntry1Size;
    DWORD    LocoEntry2Size;
    DWORD    Unknown3;
    DWORD    Entry1Count;
    DWORD    Entry2Count;
    DWORD    Entry3Count;
    DWORD    StringsSectionSize;
    DWORD    Unknown7;
   
    LocoEntry1    Entries1[Entry1Count];
    LocoEntry2    Entries2[Entry2Count];
    DWORD    Entries3[Entry3Count];
    char    StringsSection[StringsSectionSize];
   
} LOCO;
LittleCodingFox #2
Member since Nov 2008 · 34 posts
Group memberships: Members
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I've got a feeling that LocoEntry1Coords is some sort of Weight for Bones. A 4x4 matrix of those, even, judging from each Entry containing 16 Coords. Are you sure the Unknown is a DWORD and not a float?
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