engine-re.md: the write-log method, plaintext-value insight (store is obfuscated),
vm_operand_write ABI, the packer poll-until-unpacked fix, and the validation
(34k-global capture seeds the VM to match the engine's whole opening). Plus the
resync-tolerant align() / operand-hook blind-spot notes. tools-reference: the new
tool + trace --state.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
engine-re.md: the offset-path diff method, the working capture (operand hook
0x41b940; tick 0x410fb0 sees ecx!=ctx), the two capture caveats (hook-before-load
gating + operand-mode argc>=1 filter), SC0000 codebase id, and the first
divergence found (op 0xa0 jcc @ 0x8d on uninitialized G[0x6c1], the ADV-chrome
enable — a two-boot-gap state hole, not the predicted coroutine yield).
tools-reference.md: trace_engine_ops.py, diff_optrace.py, --trace-json.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Function ID recon = WEAK (0 matches; bundled FidDbs don't cover the VC9
static runtime) and our library workers are already named. Pivoted to
naming the hottest documented-but-unnamed helpers by call-count: named 5
(~2400 call sites) in Ghidra — vm_operand_fetch@0x41b940 (1021 refs),
vm_operand_write@0x425fb0, vm_operand_lvalue@0x415f30,
__security_check_cookie@0x54f981 (692), operator_new@0x5502be (533).
Validated: gfx_op_0x215 reads near source-level. Spec/plan + engine-re.md.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Created the EngineCtx Ghidra struct (35 fields, 0xa1000) and retyped all
419 dispatch handlers' this -> EngineCtx* (CUSTOM_STORAGE, ctx in ECX).
Handlers now decompile ctx->cur_ctx_index / ctx->run_state_flags etc.
Validated: sleep_op_0xc8, gfx_op_0x215. tools-reference + engine-re.md
wired; CLAUDE.md canonical-map updated (root, outside repo).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
pe-sieve /imp on the running game gave ~17 genuine imports (packer
bootstrap + one-per-DLL seed) and 300+ spurious stray-DWORD guesses:
the exe ships a zeroed IAT resolved via GetProcAddress, so there is no
conventional IAT to rebuild. Do not graft the output. Task B re-scoped
to a Frida live import-map (runtime_addr->dll!Func, RVA->name, label the
/v2 image); design captured in engine-re.md runbook.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Extract op->real-handler map (handler(op)=ctx[0x26c93+op]) from the
registration routine's override stores; ghidra_handler_map.py +
build/op-handler-map.json (420 overrides). Cross-check vs opcodes.toml
found 0 real drift. One-shot Ghidra pass then labeled the /v2 image:
281 raw FUN_/LAB_ handlers -> op_0xNN_handler, 107 bare VAs -> functions,
31 hand-named preserved, opcode plate comment on every handler.
Includes the Task A spec + plan and the two-program (/v2 vs SMM) gotcha.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Head-start for the next slice: the fix for the slot-0 collapse is running label_125bd
via the scene-coroutine framework. 0x7b=yield-save, 0x7c=resume, 0x140=LABEL (target
TBD), G[0xaba5c] gate. Plus the revealed magic-circle-persists-across-transition issue.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Traced end-to-end (AGE_DIAG_SETTEX): set-texture slot=G[0x62452] <- query-gfx-object?
(-1 for unregistered CG handles) -> fallback lookup-array-2d(rec[s3]=G[0x3239])=0
because the slot table is never filled: label_125bd (SC0000 0x50f, slots 4..13) is
gated behind the scene-coroutine framework (0x140 coroutine-yield, stubbed). Adds
env-gated VM set-texture/query slot diagnostics + GfxState.IsRegistered.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
TDD plan (BlendMath -> RenderObject resolution -> host colorkey/alpha/tint blit
-> surfaceless fade fill -> docs). Records the reversed colorkey format and the
0x202/0x203 color workers in engine-re.md (Ghidra annotated+saved).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Prior-session WIP: RE findings on the engine frame cadence (engine-re.md,
phase-a-slice-plan.md, tools-reference.md) and a null-guard so headless
--shot-sequence advances without a rendered viewport texture.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The frame-paced-sleep slice did NOT make the opening burst animate (only the
one-shot dramatic pauses). Correct the canonical result (phase-a-slice-plan),
the RE doc (engine-re), the opcode source+generated ref (opcodes.toml 0xc8),
and add correction banners to the point-in-time spec/plan. Also folds in the
diagnostics + headless halt-at-wait results into phase-a-slice-plan.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The animation-slice note mis-called the SC0000 opening 'immediate-mode slot-0
blits', inferred from our own gfx oracle (which mis-reported slot 0). Verified from
native code + raw bytecode: draw-texture (0x1fb) -> gfx_object_bind_draw@0x47e870
binds a RETAINED object by handle (stores the slot INDEX, a live per-frame ref, not
a snapshot). The opening is a sleep-paced sequence of retained objects with distinct
handles + per-object working slots (CG loader: handle=CG_array[G[0x62450]] INIT2
array, slot=G[0x62452]). Our VM collapses the paced sequence -> only the final state
shows -> needs frame-pacing (scene-coroutine/sleep), not this alpha channel.
engine-re.md: new 'opening render path is RETAINED' subsection. Ghidra: annotated
gfx_op_0x1fb_draw_bind (gfx_object_bind_draw already documented retained).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Native RE of the largest remaining SC0000 rendering GAP band: resolved every
handler in 0x21c-0x243 (+0x2bd/0x2bf) via the dispatch table (ctx[0x26c93+op]
from FUN_00413860). The cluster is ONE subsystem = sprite transform + animation/
tween; two members already named (0x234 anim_start, 0x238 set_anim_clock).
Decoded representative ops 0x220/0x21e (argc6, cmd-type 0xd, transform worker
(handle,op2,op3,f4,f5,f6); 0x21e normalizes floats /_DAT_00571c28 -> scale%);
worker gfx_anim_set_channel@0x47eaa0 arms an anim channel on the same object
model GfxState tracks. anim_start+set_anim_clock => a per-frame clock that makes
AE* fades animate rather than snap.
engine-re.md: full op->handler map + contract. Ghidra annotated (renamed
gfx_op_0x220_set_transform3_abs / gfx_op_0x21e_set_transform3_norm /
gfx_anim_set_channel + plate comments, saved).
Add the approved brainstorming spec for the opening-slice implementation
(wall-clock tween, opening-driven subset, passive GfxState + compositor tween +
alpha-aware blit).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The retained-mode "2nd CG renders off-screen" bug: GfxState conflated two
distinct native structures. It assigned a fabricated AcquireSlot() slot on
every GetOrCreate (called by all geometry/draw ops) and returned it from
QuerySlot (op 0x215). But Ghidra (gfx_op_0x215_register_query @0x42a0b0 /
gfx_op_0x1a2_registry_insert @0x42d360) shows 0x215 does map.find(handle) over
a registry populated ONLY by op 0x1a2 -- it never allocates a slot.
So a CG handle (never 0x1a2-registered) read back as "existing", took the
existing branch of label_12649, ran get-texture-size on the wrong slot (0),
got size 0, and computed dst = pos(0,0) - (w/2,h) = (-400,-600) -> off-screen.
The real engine returns -1 -> the fresh branch -> anchor from the INIT2 arrays
-> dst=(0,0).
Fix: GfxState keeps a separate _registry (HashSet) populated only by
Register() (op 0x1a2); QuerySlot returns the handle if registered else -1, and
no longer consults the geometry store or invents slots. Drop AcquireSlot /
GfxObject.Slot / the free-list.
Verified: Age.Cli gfx --boot SC0000.BIN -> all event CGs dst=(0,0), zero
(-400,-600) draws; Godot --boot pages 1/2/4 render opening CGs full-screen;
engine 44/44; sweep parity 284 exit / 13 STEP-LIMIT unchanged.
Docs: engine-re.md (query-registry-vs-geometry-store section), opcodes.toml
0x1a2/0x215 rebuilt; Ghidra helpers gfx_registry_map_find/hash_insert
annotated + saved. Tests rewritten to the native contract.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Reversed create/set/draw-texture handlers + gfx_render_frame: surfaces at ctx+0x52bd4[slot]
(set-texture loads a file with a colorkey); objects in the ctx+0x408 registry reference a
surface by slot (live) + rect + position (V24) + visible bit; render iterates the registry
in ASCENDING HANDLE ORDER (= z-order) and composites visible objects. Answers both unknowns
(z-order = handle; slot 0 not special). Design spec + Phase 1 plan rebuilt on this model,
replacing the flawed flat-layer version. Ghidra annotated (gfx_op_0x1f8/9/b, gfx_object_bind_draw,
gfx_render_frame, gfx_object_composite, gfx_op_0x20c_present_frame).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
