ef6e448268
Reverse-engineer the single-stream XBG7 geometry layout (clean-room: hex
inspection + geometric validation of the retail disc's
hidden/resource3d/*.xpr, no game code copied) and present models as
textured 3D meshes in the explorer.
Format (docs/re/structures/xbg7-mesh.md): XBG7 geometry resources sit
inside XPR2 containers alongside TX2D textures. For ~25 single-stream
models (weapons, simple props) the data section is a sequence of
sub-meshes, each an u16-BE triangle-list index buffer followed (after a
fixed 12-byte header) by a stride-24 vertex buffer whose declaration is
in the descriptor: POSITION f32x3 @0x00, NORMAL f16x4 @0x0C, TEXCOORD
f16x2 @0x14. Sub-mesh (vtx,idx) counts come from descriptor tuples.
The +12 vertex offset is pinned by the recovered normals being exactly
unit-length (align16 lands 4 bytes early and silently corrupts every
field). A safety gate rejects any model whose indices are out of range
or whose mean |normal| is not ~1, declining garbage (Stage_S*
placeholders, the complex multi-stream hero-ship body) rather than
mis-decoding it.
- mesh.rs: Xbg7Model::from_xpr2 -> GameMesh { positions, normals, uvs,
indices }; standalone f16->f32; unit + real-disc tests (weapon decodes
to 215v/364t with unit normals + in-range UVs; DeltaSaber body
declined).
- texture.rs: from_xpr2_index / texture_names so the viewer can pick a
model's _col albedo map.
- viewer: loose .xpr with decodable XBG7 spawns Bevy meshes (real normals,
double-sided) textured with the albedo, framed by the orbit camera; the
central egui panel goes transparent so the 3D scene shows through.
Complex multi-stream body meshes (DeltaSaber f004, other vertex layouts)
remain undecoded and are cleanly declined — next target is dynamic RE.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
63 lines
1.7 KiB
Rust
63 lines
1.7 KiB
Rust
//! # sylpheed-formats
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//!
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//! Asset format parsers for Project Sylpheed: Arc of Deception (Xbox 360).
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//!
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//! This crate handles:
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//! - Reading game files from XISO disc images (native only)
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//! - Reading IPFB archives (`*.pak` / `*.pNN`) and the `IDXD` definition objects inside
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//! - Parsing Xbox 360 texture formats (XPR2 containers + DXT de-tiling)
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//! - Parsing mesh formats (to be reverse engineered)
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//! - Parsing audio formats (XMA → standard PCM)
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//!
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//! ## Platform notes
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//! XISO reading is only available on native (Windows/macOS/Linux).
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//! On WASM, assets must be pre-extracted and served over HTTP.
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pub mod texture;
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pub mod vfs;
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// IPFB TOC name-hash (path → 32-bit key), recovered from the retail title
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pub mod hash;
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// IPFB archive (`*.pak` index + `*.pNN` segments) reader
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pub mod pak;
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// IDXD reflective object (ship / weapon / effect / menu definitions) reader
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pub mod idxd;
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// IXUD localized string / subtitle table reader
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pub mod ixud;
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// Embedded font (OTF / TTF / ttcf) metadata
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pub mod font;
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// T8aD 2D UI/HUD texture
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pub mod t8ad;
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// RATC nested resource bundle
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pub mod ratc;
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// LSTA sprite list (inline T8aD frames)
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pub mod lsta;
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// XISO reading is not available in-browser
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#[cfg(not(target_arch = "wasm32"))]
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pub mod xiso;
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// Mesh parsing — scaffold for reverse engineering
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pub mod mesh;
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// Audio parsing — scaffold for XMA handling
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pub mod audio;
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/// Re-export the most commonly used types at the crate root.
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pub use font::FontInfo;
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pub use idxd::{IdxdError, IdxdObject};
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pub use ixud::{Cue, Subtitle};
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pub use mesh::{GameMesh, Xbg7Model};
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pub use ratc::RatcChild;
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pub use t8ad::T8adImage;
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pub use pak::{PakArchive, PakEntry, PakError};
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pub use texture::{X360Texture, X360TextureFormat};
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pub use vfs::{GameAssets, VfsError};
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