gtchunk.bt

//------------------------------------------------
//--- 010 Editor Binary Template
//
//      File: .gtchunk
//   Authors: freakbyte, FallenAvatar, Arkii, Xsear
//  Category: Firefall
// File Mask: *.gtchunk
//  ID Bytes: ED 12 5B ED 12 5A ED 12 00 00 04 00
//------------------------------------------------

#include "_common_types.bt"
#include "_common_gtlayer.bt"

struct COMPRESSED_DATA(uint length) {
    char magic[4];
    byte data[length-4];
};
string CompressedHeaderDisplay(COMPRESSED_DATA &data)
{
    if (data.magic == "DATA") {
        return "DATA / Zlib/Deflate";
    }
    else if (data.magic == "DAT2") {
        return "DAT2 / LZMA";
    }
    else {
        return "UNKNOWN";
    }
}

struct FILE {
    // Root layer / Index
    Layer root(NO_PARENT)<comment="index">;
    
    // Compressed data
    local int lod<hidden=true>;
    local int subchunk<hidden=true>;
    local uint baseOffset<hidden=true> = FTell();
    for (lod = 0; lod < root.data.numLods; lod++) {
        struct DATA {
            FSeek(baseOffset + root.child[lod].data.dataOffset);
            COMPRESSED_DATA data(root.child[lod].data.compressedSize)<read=CompressedHeaderDisplay, comment="LOD Shared Data">;

            for(subchunk = 0; subchunk < (1 << 2 * root.child[lod].data.numSubChunks); subchunk++) {
                FSeek(baseOffset + root.child[lod].child[subchunk].data.dataOffset);
                COMPRESSED_DATA data(root.child[lod].child[subchunk].data.compressedSize)<read=CompressedHeaderDisplay, comment="SubChunk Data">;
            };
        } lod_data<comment="Compressed data for each LOD, referenced by index">;
    };
} gtchunk;