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Extract assets/materials from DC3 .ark archives and .milo/.dta files. Use when you need game assets for the native port, debugging rendering, or inspecting data.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Decompile and analyze a function from Ghidra. Shows decompiled C code, switch statements, and cast operations. Use when investigating function structure or debugging type issues. Automatically resolves symbol names to correct functions. Need to skip sandbox to access Ghidra over network.
Run decomp-synth (the guided source-synthesis permuter) on a function — beam search over 112 behaviour-neutral C++ transforms (signed/unsigned, declaration reorder, branch polarity, variable extraction, …), each scored with objdiff, to drive a near-match toward 100%. Use when a function is below 100% and you want to automatically try source variations.
Diff stack-frame layouts between target and base for a function. Labels base-side slots with source variable names from a MSVC /Z7 CodeView recompile. Identifies SWAPPED pairs (decl-reorder candidates), SHIFTED slots, DIFFER (different variables in same slot), and TGT_ONLY / BASE_ONLY (extra/missing locals). Filters out callee-save slots.
Dump vtable layout for a class from original COFF .obj files. Maps each slot to the actual virtual function symbol AND its declaration-order name from the class header, so ICF-merged entries (OnlyReturns / merged_Returns1 / etc.) are still identifiable. Use when debugging vtable offset mismatches in objdiff.
Diff a DATA symbol (vtable ??_7Class@@6B@, RTTI, pointer/jump table, string pool, static initializer) between the target and the decompiled build, showing byte differences and — for each relocation slot — which function/symbol each side points to. Use when a data symbol is below 100%, or to find which vtable slot resolves to the wrong function. The MCP run_objdiff wrapper does not expose data diffs, so this calls objdiff-cli directly.
Run DC3's original Xbox 360 debug XEX on Xenia (Linux/Vulkan) and navigate to gameplay. Captures headless frames of menus, song select, loading, and in-game venues with 3D characters. Use when testing original binary behavior, capturing IK telemetry, or comparing Xbox vs native rendering.
| name | asset-extract |
| description | Extract assets/materials from DC3 .ark archives and .milo/.dta files. Use when you need game assets for the native port, debugging rendering, or inspecting data. |
| argument-hint | [command] [options] |
| allowed-tools | Bash, Read, Grep, Glob |
Extract and inspect assets from the DC3 game archives (.ark + .milo_xbox + .dta/.dtb).
$ARGUMENTS
The argument $0 determines what to do:
| Command | Description |
|---|---|
extract | Extract the full ark to orig-assets/extracted/ |
extract --inflate | Extract + decompress all .milo_xbox files |
extract --dta | Extract + convert .dtb → .dta text |
extract --all | Extract everything (inflate + dta convert) |
inflate <file> | Decompress a single .milo_xbox file |
inflate --dir <dir> | Decompress all milos in a directory |
find | List all extracted assets with type summary |
find --type milo_xbox | Filter by file extension |
find --grep pattern | Search by name pattern |
find --tree | Show directory tree |
info <file> | Show milo compression info |
inspect <file> | List object types/names inside a milo scene |
inspect <file> --search Foo | Search raw milo bytes for a string |
Extract the DC3 ark archive. This is the starting point — run it once.
# Basic extraction (files only, no decompression)
scripts/milo/extract_ark.sh
# Full extraction with milo decompression + dta conversion
scripts/milo/extract_ark.sh --all
# Custom output directory
scripts/milo/extract_ark.sh /tmp/dc3-assets --all
The ark header is at orig-assets/gen/main_xbox.hdr with 10 ark segments (0-9).
Uses arkhelper ark2dir from ../milo-executable-library/dance-central-3-deluxe/dependencies/linux/arkhelper.
After extraction, search and list assets:
# Summary of all asset types
python3 scripts/milo/find_assets.py --summary
# Find all .milo_xbox files
python3 scripts/milo/find_assets.py --type milo_xbox
# Search by name
python3 scripts/milo/find_assets.py --grep "glitterati"
# Browse a subdirectory
python3 scripts/milo/find_assets.py --path world --tree
If no extracted dir exists, it falls back to the pre-extracted library at:
~/code/milohax/milo-engine-libs/harmonix-repos/milo-rnd-library/dc3/
For working with specific .milo_xbox files (e.g. for the native port viewer):
# Decompress a single file
python3 scripts/milo/inflate_milo.py path/to/file.milo_xbox
# Decompress with custom output
python3 scripts/milo/inflate_milo.py path/to/file.milo_xbox output.milo_xbox
# Show compression info without extracting
python3 scripts/milo/inflate_milo.py --info path/to/file.milo_xbox
# Batch decompress a directory
python3 scripts/milo/inflate_milo.py --dir orig-assets/extracted/world/
| Version | Magic | Description |
|---|---|---|
| A | 0xCABEDEAF | Uncompressed |
| B | 0xCBBEDEAF | zlib compressed |
| C | 0xCCBEDEAF | gzip compressed |
| D | 0xCDBEDEAF | Hybrid (mixed compressed + uncompressed blocks) |
DC3 Xbox 360 typically uses version D (hybrid).
Inspect objects inside a milo scene file (searches the raw binary data):
# List object types in a milo scene (parses entry table)
python3 scripts/milo/inspect_milo.py path/to/file.milo_xbox --summary
# Search for a specific type string in raw bytes
python3 scripts/milo/inspect_milo.py path/to/file.milo_xbox --search "EventTrigger"
# Filter entries by type
python3 scripts/milo/inspect_milo.py path/to/file.milo_xbox --type PropAnim
Use --search for definitive presence/absence checks (raw byte scan, no format assumptions).
Some assets are already available without extraction:
~/code/milohax/milo-engine-libs/harmonix-repos/milo-rnd-library/dc3/
config/gen/metamaterials.milo_xbox
flow/gen/*.milo_xbox
sfx/gen/*.milo_xbox
ui/gen/*.milo_xbox
world/glitterati/gen/glitterati.milo_xbox
world/dclive/gen/dclive.milo_xbox
char/main/gen/main.milo_xbox
--inflate decompresses milos in-place during ark extraction (saves a second pass)--dta is useful for reading game scripts (menus, flow logic, song data)find_assets.py --grep to locate specific materials, textures, or meshes by name