acdream/docs
Erik eeec4fb42a diag(physics): remote landing-edge probe; record the two live jump defects
The user live-tested route 4a and reported two defects on player remotes: a
remote holds the falling animation after landing before finally landing, and a
remote jumping onto a house plants on the roof where retail slides off, then
blips to the slid-down position.

Neither is a route 4a regression. Do NOT revert 44830a0e — reverting would
restore the per-packet render slam 4a removed without touching either defect.

Bug B's root cause is identified and already covered by open issue #32, whose
text names both symptoms in one sentence. Both landing sites assert
TransientState |= Contact | OnWalkable unconditionally, where retail derives it
from the contact plane — CPhysicsObj::SetPositionInternal @0x00515330
(`if (contact_plane.N.z < floor_z) set_on_walkable(0) else set_on_walkable(1)`).
A steep roof is contact but NOT on_walkable; asserting both suppresses the slide
response, so the body sits until the server's positions walk 4 m away and
AP-87's threshold snaps it. That is the blip. Verified byte-identical pre-4a via
`git show 19d95094:`.

Bug B's *visible shape* IS 4a's: pre-4a every packet slammed the render entity
to the wire pose, so a stuck body flickered toward the true sliding position
5-10x per second — jitter rather than a clean hold.

Bug A stops at the goal's stop-condition rather than getting a speculative fix.
Three hypotheses with non-overlapping fixes; picking wrong means changing a
retail-ported gate on a guess. Retail's mechanism is already fully decoded, so
what is missing is OUR runtime state — no cdb trace against retail is needed.

Adds ACDREAM_PROBE_REMOTE_LANDING (PhysicsDiagnostics, read once at startup per
the diagnostic-owner rule, one bool check when off). It logs both landing sites
immediately before HitGround, and — the most diagnostic signal — emits a
separate line when a site is reached but the gravity gate is about to no-op,
which is hypothesis 1 (a wholesale Body.State write wiping the transient Gravity
bit mid-air, exactly AP-81's stated risk). Temporary instrumentation, marked for
stripping once the evidence is in.

Evidence recorded rather than new bugs filed: #32 gains the observation, the
root cause and the #173/AD-10 dependency caveat; AP-87 gains a live instance of
its stated risk; AD-10's stale file:line is corrected to RemoteMotionCombiner
with a note that its terrain-only normal cannot see a house roof at all.

Also files #308 — a SECOND flaky test, distinct from #302, which was twice
misattributed to it before being written down. #302 is a GC-allocation assertion
in App.Tests; #308 is a wall-clock deadline loop in Core.Net.Tests that fails
only under full-suite CPU contention (0 failures in 4 isolated runs). Conflating
them hides one, and an agent told to "ignore the known flake" would wave through
a real transport regression.

Gates: complete Release solution 10,938 passed / 4 skipped / 0 failed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04 01:10:03 +02:00
..
architecture diag(physics): remote landing-edge probe; record the two live jump defects 2026-08-04 01:10:03 +02:00
audit docs: update audit — Sprint 1 items verified (sequence counters + scenery LCG) 2026-04-13 13:51:39 +02:00
plans docs: C4 route 4b scoping — split three ways, and two corrections 2026-08-04 00:51:32 +02:00
reference docs(reference): preserve local ACE command catalog 2026-07-27 00:03:58 +02:00
reports docs: the overnight consolidation report, open questions first 2026-07-29 03:54:43 +02:00
research diag(physics): remote landing-edge probe; record the two live jump defects 2026-08-04 01:10:03 +02:00
superpowers fix(world): remove non-retail portal exit fade 2026-07-15 23:20:52 +02:00
bugs.md docs: reconcile project status and navigation 2026-07-20 13:00:41 +02:00
ISSUES.md diag(physics): remote landing-edge probe; record the two live jump defects 2026-08-04 01:10:03 +02:00
README.md docs: reconcile project state and refresh README 2026-07-27 12:53:31 +02:00

acdream documentation map

This page is the entry point for project documentation. It distinguishes current sources of truth from implementation history so an old plan or issue banner cannot silently override the current program state.

Current snapshot — 2026-07-27

  • Milestone state: M3, “Cast a spell,” landed 2026-07-21. M4, “Live in the world,” is active.
  • M4 gameplay program: resume the pre-M4 world-interaction completion program. Favorite-spell overflow, status Use/Assess, and the complete assessment surface are user-accepted. Equipped-child picking and vendor browse/transactions remain Slices 46.
  • Structural/runtime state: all eight GameWindow decomposition slices, Modern Runtime Slices AJ, and the connected visual/lifecycle gates are complete. GameWindow is a 1,622-line composition/callback shell. AcDream.Runtime.GameRuntime owns canonical session, entity/object, gameplay, movement, physics, projectile, environment, and portal state; graphical and no-window hosts borrow the same owner graph.
  • Headless state: Slice K is complete. AcDream.Headless is a presentation-free Windows/Linux host with deterministic commands/events, shared immutable content, multi-session isolation, reconnect, resource telemetry, and 1/5/10/30-session gates. The final two-account native-Linux soak completed ten minutes, logged out through ACE, and converged every ownership ledger.
  • Linux graphical state: Slice L0 and the L1 implementation checkpoint are complete at 66f114b2 and 11501d52. Native Windows passes the active modern-GL/audio/window smoke. WSLg X11/Wayland correctly reject their missing GL_ARB_bindless_texture. Physical-Linux validation and L2L6 are explicitly deferred; resume at the supported AMD/NVIDIA L1 gate.
  • Completed gameplay gates: R6 locomotion/collision/projectile/teleport/ radar, two-client portal-out/materialization, indoor prepared collision, loot ordering, local/remote ground drops, and selection-marker lifetime.
  • Separate visual verification: issue #225, the shared-alpha lifestone/particle result; its connected resource-lifetime and performance routes pass.
  • Carried behaviour debt: issue #153 (far teleport onto an unstreamed edge), #116 (narrowed slide response), #235 (capped/RDP jump cadence), and the active temporary-stopgap rows in the divergence register.
  • Divergence audit: 189 active rows — IA 18, AD 38, AP 91, TS 38, and UN 4 — plus retained struck/retired historical rows such as TS-37.
  • Latest automated baseline: the Release build succeeds with the 17 test-project warnings tracked by issue #228; 8,826 tests pass and five are intentionally skipped. App passes 3,763 / 3 skips. The L1 Windows supported smoke and WSLg X11/Wayland negative-capability reports all end with zero window/GL/input/audio ownership.

Sources of truth

Read these in this order when deciding what to do next:

  1. plans/2026-05-12-milestones.md — the active playable outcome, freeze boundaries, and visual gates.
  2. plans/2026-04-11-roadmap.md — strategic phase ledger: shipped, active, deferred, and future work.
  3. ISSUES.md — tactical defects and small follow-ups. The status inside an issue is authoritative; physical order is not.
  4. architecture/retail-divergence-register.md — every known place runtime behavior can differ from retail.
  5. architecture/acdream-architecture.md and architecture/code-structure.md — ownership, dependency, update-thread, and extraction rules.
  6. architecture/worldbuilder-inventory.md — rendering/DAT code already owned in-tree versus mechanisms still ours to port.

If these disagree, milestones control the current outcome, the roadmap controls work ordering, the issue status controls the individual defect, and the architecture documents control implementation shape. Reconcile the stale document in the same change; do not leave both claims standing.

Research and implementation records

  • research/named-retail/ is the primary retail oracle: named pseudo-C, headers, symbols, and types from the Sept 2013 build.
  • research/decompiled/ is the older Ghidra fallback.
  • research/ contains focused pseudocode, traces, fixtures, and gate reports. A dated research note records evidence; it does not become a new roadmap.
  • superpowers/specs/ and superpowers/plans/ are per-slice design and execution records. Completed plans remain historical.
  • audit/ contains completion and conformance audits.
  • reference/ace-commands.md preserves the local ACE server's complete in-game command catalog and points to the authoritative per-command help surface.

Durable memory

  • ../claude-memory/MEMORY.md indexes the live subsystem memories and the render/physics digests. Read a domain digest before changing that subsystem, especially its DO-NOT-RETRY table.
  • ../memory/ contains stable engineering references such as the modern rendering pipeline, two-tier streaming, and toolchain notes.

Memory accelerates recall; it does not outrank the canonical documents above. When current truth changes, update the relevant canonical document and distill only the durable lesson into memory.

Historical and deprecated documents

  • bugs.md is the April 2026 bug snapshot. It is preserved for archaeology and is not an active ledger.
  • Dated plans and specs describe the decision at that time. Their completion wording is historical unless the current milestone/roadmap explicitly links the item as active.
  • Old R1→R8 architecture sequencing is superseded. Current execution comes from the milestones and strategic roadmap.

Documentation maintenance rules

  • Update milestone, roadmap, issue, divergence, architecture, and memory claims in the same commit when a shipped change affects them.
  • Keep one issue ID per defect. Narrow an issue in place; do not reuse another issue's number as a shorthand.
  • Mark automated, connected, and visual gates separately. An automated pass is not a visual acceptance, and an RDP throughput sample is not a local-display visual comparison.
  • Preserve research history, but remove stale “current/next” claims from living documents once the state advances.