forked from tsuki/openroller
225 lines
8.8 KiB
Markdown
225 lines
8.8 KiB
Markdown
# Menu reverse notes: game471.exe as source of truth
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This work deliberately does not derive menu layout or behavior from web
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screenshots. The authoritative inputs are `GC/game_patched.exe` and the
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matching files in `GC/data/2d_boost` and `GC/data/task_cfg`.
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## Task flow
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The global state machine at `FUN_00651440` constructs these tasks in order:
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| state | task | constructor | scheduler id |
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|---|---|---:|---:|
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| `0x10` | `CSelectMusicTask` | `FUN_005aa900` | `0x260` |
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| `0x11` | `CDifficultyTask` | `FUN_005bc750` | `0x261` |
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| `0x12` | `CGameMainTask` | gameplay constructor | — |
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This proves that selecting a song and selecting its difficulty are separate
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screens. OpenRoller's earlier combined selector was structurally wrong.
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The main vtables recovered from RTTI are:
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- `CSelectMusicTask::vftable` at `0x006fbcdc`;
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- `CDifficultyTask::vftable` at `0x006fb898`.
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Their render callbacks are `FUN_005aca40` and `FUN_005be2d0` respectively.
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## Scene files chosen by the executable
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`FUN_00446a10` chooses the language-specific select-music task config. The
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English configs resolve to:
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```text
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data/task_cfg/selectmusic_eng.cfg
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data/2d_boost/selectmusic2_eng.rvb
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data/2d_boost/selectmusic2_eng.mtx
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data/task_cfg/difficulty_eng.cfg
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data/2d_boost/selectmode2_eng.rvb
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data/2d_boost/selectmode2_eng.mtx
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```
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The `.rvb` MOVI header identifies both scenes as `720x1280 @ 60 fps`. Its two
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dimension fields are stored height-first. This ordering is confirmed by the
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root placements recovered from `TIME`: `imc_title=(360,112)`,
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`imc_focus=(341,695)`, and `imc_navi=(238,1136)`. The UI is authored directly
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for the cabinet's portrait display.
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The RVB top-level child layout is now parsed by `gc::ParseRvbScene`. For the
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English music scene it is:
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```text
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PREP @ 0x000033 size 0x0056cf (455 action/path bindings)
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REPO @ 0x005702 size 0x0017b0
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DEFN @ 0x006eb2 size 0x03046e
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EXPG @ 0x037320 size 0x000054
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TIME @ 0x037374 size 0x00177a
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```
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`PREP` exposes the real animation hierarchy, including
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`/imc_focus/imc_fd_jacket_anim`, the four nodes below `/imc_focus/imc_diff`,
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the eight `/imc_sort/imc_sort*` nodes, `tg_decision`, and the focus in/out
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actions. The companion difficulty scene exposes its own `/imc_slmode`
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hierarchy.
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Use the local probe to inspect all bindings:
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```sh
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./build/openroller-rvb-probe GC/data/2d_boost/selectmusic2_eng.rvb
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./build/openroller-rvb-probe GC/data/2d_boost/selectmode2_eng.rvb
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```
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The probe also accepts exact MovieClip states, for example:
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```sh
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./build/openroller-rvb-probe --state /=jf_slmusic_start \
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--state /imc_focus=jf_focus_start \
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GC/data/2d_boost/selectmusic2_eng.rvb
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```
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## Recovered RVB/MTX runtime
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Every animation object is a recursive node with a four-byte tag, total size,
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local-data size, local data, and child nodes. `DEFN` supplies named `MOVC` and
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`SHAP` definitions; `TIME` contains labeled `FRAM` records. Frames are display
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list deltas rather than complete scenes:
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- `PLC3` creates/replaces a definition at a depth or updates its transform;
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- `RMOV` removes a depth;
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- `TRN2` carries the 2D affine transform;
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- `COLT` carries RGBA multiplication, including authored visibility fades;
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- `ASRC` contains the exported `play();`, `stop();`, and target actions.
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`gc::BuildRvbSnapshot` now accumulates those deltas through a selected label
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and advances `play()` entry frames to their following `stop()` frame. This is
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why hidden templates and transition masks no longer appear together.
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MTX starts with `MTX\0`; each payload is a DDS whose first dword was replaced
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by the container. Restoring `DDS ` yields a standard DDS. RVB `ImageN` maps to
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MTX texture `N-1`; all 115 music resources and all 210 difficulty resources
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match their declared dimensions.
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## Coordinates recovered from render code
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The select-music render callback walks exactly twelve neighboring song slots.
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The associated catalog offsets stored at `0x006e0708` are:
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```text
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-5 -4 -3 -2 -1 0 0 1 2 3 4 5
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```
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`FUN_00447170` supplies the stable slot geometry. Its twelve vertical pairs
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are:
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```text
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175/189 228/242 281/295 334/348 387/401 440/454
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701/715 754/768 807/821 860/874 913/927 966/980
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```
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The fixed components in `FUN_005aca40` include positions `(39,497)`,
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`(251,467)`, `(262,500)`, `(262,522)`, and `(330,594)`. These are floats read
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directly from the executable's `.rdata`, not measurements from a screenshot.
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`CDifficultyTask` passes sprite centres to `FUN_005b33a0`, which subtracts half
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of the scaled source rectangle. The selected song fragments therefore resolve
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to these destination rectangles:
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```text
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jacket source (1,1,196,196) -> (105,167,98,98)
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title source (0,197,374,34) -> (209,178,374,34)
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source source (0,232,374,24) -> (220,214,374,24)
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artist source (198,180,314,16) -> (220,239,314,16)
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```
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The difficulty callback centers variable-length groups using the executable's
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actual formulas and spacings:
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- `(7 - count) * 0.5 * 68`, with the row anchored at `426 + 16`;
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- `(9 - count) * 0.5 * 52`, with the row anchored at `433 + 16`.
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The remaining visual work is outside this recovered static scene snapshot:
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the executable-owned player/status HUD in the blank upper band, continuous
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timeline interpolation, and the exact transition timing between task states.
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## Common and navigator layers
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The select task is not visually self-contained. Two additional original
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movies are composed with it:
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```text
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data/2d_boost/common_eng.rvb/.mtx
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data/2d_boost/navigator/navi_001_yume.rvb/.mtx
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```
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`common_eng` supplies the network/player icons and the three bottom controller
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prompts. The select-music controller uses the `jf_ctrl_3` layout and the
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`jf_ctrl_tx02`, `jf_ctrl_tx05`, and `jf_ctrl_tx08` label states (`Select`,
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`Change song order`, `Confirm`).
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The navigator is itself a 720x1280 MovieClip scene, not a single positioned
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DDS. Its recovered opening state draws the bottom backing plate at
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`(0,1000)..(720,1232)`, Yume at `(416,830)..(720,1280)`, and a separate mouth
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layer. Rendering only `navigator/001_yume/base.dds` was therefore structurally
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incorrect.
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## Dynamically linked carousel rows
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The twelve list rows do not live in the root select-music timeline. The task
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creates twelve instances of each exported linkage symbol below and attaches
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them to `imc_scroll_dds`:
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```text
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EXPG UNIQUE_71 -> mc_music_link
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EXPG UNIQUE_74 -> mc_index_link
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```
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`gc::BuildRvbSymbolSnapshot` resolves those EXPG symbols back to their DEFN
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MovieClips. `mc_music_link` contains the 520x34 row plate and its three score
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cells. `FUN_00447170` places it at x=8 and the twelve y positions listed above;
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`FUN_00447620` supplies row opacity (`0,.7,.8,.9,1,0,0,1,.9,.8,.7,0`), not a
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geometric scale. The title atlas fragments do use the same values as scale.
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`mc_index_link` is the corresponding 356x36 category plate. Entries returned
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by `FUN_005aa7c0` below 50000 select `mc_music_link`; pseudo entries at or above
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50000 select `mc_index_link` and therefore consume a normal carousel slot.
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For the Genre sort, `FUN_005b40f0` loads
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`data/2d_boost/menu/s_j[_eng].dds`. `FUN_005b3fc0` selects one of its 256x32
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rows and `FUN_005aca40` draws it at the index clip position plus `(53,2)`:
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with the static x=88 row position this gives label x=141. The English rows are
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beginner, Anime & Pops, VOCALOID, Touhou, Rhythm Game, Game, Variety, Original.
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## Sort-tab indirection
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The integer stored in `DAT_007f3134` is not the left-to-right tab number. The
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eight internal sort kinds map through the executable byte table `34621857`;
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internal kind 0 (Genre and `s_j_eng.dds`) consequently drives visual frame
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`jf_sort3_ini`. The visual tab order remains New, Monthly Theme Music, Genre,
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Difficulty, Score Average, Title, Favorite, At random. Each `imc_sortN` child
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also receives its independent `jf_sortN_on/off` availability frame. The small
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40x18 NEW marker at `(44,181)` is a separate root child present in both
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`jf_sort3_ini` and the stable `jf_sort3` frame; it is not part of `imc_sort1`.
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## Executable-owned menu background
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The background is a separate 3D task, not part of any RVB and not a guessed
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flat colour. `FUN_00577fb0` first emits a full-screen four-vertex strip with
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the exact D3D colours:
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```text
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top: ARGB FF30309B
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bottom: ARGB FFE57386
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```
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It then draws two locally loaded TUMO resources. The loader table begins at
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the literal `data/model/menu_obj_05.tumo`; its second 0x40-byte entry is
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`data/model/obj_sphere06.tumo`. The latter is the 288-segment wire sphere seen
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behind the list. Its recovered camera is LH, FOV 60 degrees, aspect 720/1280,
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near/far 0.1/1000, looking along +Z. The sphere is translated to z=100, scaled
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by 5, rotated equally about XYZ at `time*0.125`, and given the small authored
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two-frequency vertical drift.
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Finally `FUN_005b73a0` draws `data/2d_boost/menu/balloon.dds` as a 12x4 grid
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of 64px cells at y=1000. This reconstructs source rectangle `(0,0,768,256)`;
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the last 48 pixels are clipped by the 720px cabinet viewport. This is the
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dark controller backing visible behind the common HUD and navigator.
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