188 lines
8.6 KiB
Markdown
188 lines
8.6 KiB
Markdown
# WMO Placement Resolver
|
|
|
|
## Metadata
|
|
|
|
| Field | Value |
|
|
|---|---|
|
|
| Status | Implemented |
|
|
| Target/work package | M03 / `M03-RND-WMO-PLACEMENT-RESOLVER-001` |
|
|
| Owners | Pure WMO cache-key, placement-identity and world-transform rules |
|
|
| Last verified | Worktree `work/sindo-main-codex/m03-wmo-placement-resolver`, 2026-07-17 |
|
|
| Profiles/capabilities | Existing ADT/WDT WMO placement paths |
|
|
|
|
## Purpose
|
|
|
|
Provide one scene-free boundary for normalized WMO cache keys, MODF placement
|
|
identity and world-space Godot transforms across render-cache, cached-scene and
|
|
live-prototype instance paths.
|
|
|
|
## Non-goals
|
|
|
|
- Parse ADT/WDT or convert canonical WoW coordinates.
|
|
- Own WMO registry references, tile state, jobs, queues or retries.
|
|
- Load/validate cached scenes or lightweight render resources.
|
|
- Create Nodes, Mesh/MultiMesh, materials or RIDs.
|
|
- Implement portals, rooms, visibility, materials, doodads or WMO parity.
|
|
|
|
## Context and boundaries
|
|
|
|
```mermaid
|
|
flowchart LR
|
|
Parsed[ADT/WDT WMO placement] --> Loader[StreamingWorldLoader adapter]
|
|
Loader --> Resolver[WmoPlacementResolver]
|
|
Resolver --> CacheKey[Normalized cache key]
|
|
Resolver --> Identity[Registry unique key]
|
|
Resolver --> Transform[World Transform3D]
|
|
CacheKey --> Cache[Loader WMO caches/requests]
|
|
Identity --> Registry[Loader WMO registry]
|
|
Transform --> RenderRoot[Lightweight render root]
|
|
Transform --> Scene[Cached scene instance]
|
|
Transform --> Live[Live prototype instance]
|
|
```
|
|
|
|
Allowed dependencies are Dictionary/String values and Godot `Vector3`, `Basis`
|
|
and `Transform3D` math. Node, SceneTree, RenderingServer, ResourceLoader,
|
|
WorkerThreadPool, mutexes, files, gameplay, network and editor UI are forbidden.
|
|
|
|
## Public API
|
|
|
|
| Symbol | Kind | Purpose | Thread/lifetime | Errors |
|
|
|---|---|---|---|---|
|
|
| `normalize_relative_path(relative_wmo_path)` | Pure query | Return lowercase slash-normalized cache/lookup key | Any thread; value result | Empty input returns empty |
|
|
| `resolve_unique_key(placement, tile_key, placement_index)` | Pure query | Return positive UID identity or tile/index fallback | Any thread; value result | Missing/non-positive UID uses fallback |
|
|
| `resolve_world_transform(placement)` | Pure query | Compose world-space position, Godot Euler rotation and uniform scale | Any thread; value result | Missing fields use zero/zero/one defaults; scale is not clamped |
|
|
|
|
## Inputs and outputs
|
|
|
|
| Direction | Contract/data | Producer | Consumer | Ownership | Thread/lifetime |
|
|
|---|---|---|---|---|---|
|
|
| Input | Relative WMO path | WDT/ADT name table | Path normalizer | Caller String | One call |
|
|
| Input | Raw placement Dictionary | WDT global or ADT MODF parser result | Identity/transform queries | Read-only shallow value | One call |
|
|
| Input | Tile key and placement index | Loader build job | Synthetic identity fallback | Copied scalar/String | Registry entry lifetime |
|
|
| Output | Normalized relative path | Resolver | Render/scene cache and load-request maps | New String value | Request/cache lookup |
|
|
| Output | `uid:*` or `tile:*:*` key | Resolver | Loader WMO registry/ref arrays | New String value | Until unregister/reset |
|
|
| Output | World `Transform3D` | Resolver | Three WMO instance adapters | Value copy | Instance lifetime after assignment |
|
|
|
|
The resolver retains no source Dictionary, output or engine resource.
|
|
|
|
## Data flow
|
|
|
|
```mermaid
|
|
flowchart TD
|
|
Path[relative path] --> Slash[replace backslash with slash]
|
|
Slash --> Lower[lowercase entire key]
|
|
Placement[placement Dictionary] --> UID{unique_id > 0?}
|
|
UID -->|yes| UidKey[uid decimal]
|
|
UID -->|no| TileKey[tile key + placement index]
|
|
Placement --> Defaults[position/rotation/scale defaults]
|
|
Defaults --> Basis[Godot Basis.from_euler]
|
|
Basis --> Scale[unclamped uniform scale]
|
|
Scale --> World[world Transform3D]
|
|
```
|
|
|
|
## Lifecycle/state
|
|
|
|
The resolver is stateless. Construction, world reset, map switch, cancellation
|
|
and shutdown require no resolver operation.
|
|
|
|
## Main sequence
|
|
|
|
```mermaid
|
|
sequenceDiagram
|
|
participant Loader as StreamingWorldLoader
|
|
participant Resolver as WmoPlacementResolver
|
|
participant Registry as Loader WMO registry/cache
|
|
participant Instance as Render/cached/live instance
|
|
Loader->>Resolver: normalize_relative_path(path)
|
|
Resolver-->>Loader: cache key
|
|
Loader->>Resolver: resolve_unique_key(placement, tile, index)
|
|
Resolver-->>Registry: identity adopted by loader
|
|
Loader->>Resolver: resolve_world_transform(placement)
|
|
Resolver-->>Loader: value Transform3D
|
|
Loader->>Instance: assign transform and attach/build
|
|
```
|
|
|
|
## Ownership, threading and resources
|
|
|
|
- The resolver owns only call-local scalar/value calculations.
|
|
- The loader owns WMO registry entries/ref sets, cache/load-request state, build
|
|
jobs/queues, resource fallback and cancellation.
|
|
- The loader and builders own every Node/Mesh/MultiMesh/material/RID lifecycle.
|
|
- Pure calls are thread-safe; current consumers execute on the main thread.
|
|
|
|
## Errors, cancellation and recovery
|
|
|
|
| Failure | Detection | Behavior | Diagnostic | Recovery |
|
|
|---|---|---|---|---|
|
|
| Empty path | Empty String | Empty normalized key | Contract fixture | Loader cache path rejects/degrades |
|
|
| Missing/non-positive UID | Integer rule | Tile/index key prevents same-tile collisions | Contract fixture | Rebake old ADT cache to restore cross-tile UID dedupe |
|
|
| Missing transform fields | Dictionary defaults | Zero position/rotation; scale one | Contract fixture | Repair parser/cache input |
|
|
| Zero/negative scale | No historical clamp | Preserve zero/mirrored basis | Contract fixture | Preserve source behavior |
|
|
| Resource missing/pending | Outside resolver | Loader retry/fallback path unchanged | Existing loader diagnostics | Restore cache/raw asset |
|
|
| Tile unregister/reset | Outside resolver | Loader releases refs/nodes/jobs | Shutdown/registry regressions | New placements resolve afresh |
|
|
|
|
## Configuration and capabilities
|
|
|
|
The resolver introduces no setting or profile branch. WMO radii, visibility,
|
|
shadow/occlusion flags, cache size limits and build budgets remain loader-owned.
|
|
|
|
## Persistence, cache and migration
|
|
|
|
No format is written. Existing WMO `.tscn`/lightweight render cache versions and
|
|
ADT/WDT formats are unchanged. Older placement caches without positive UID retain
|
|
the existing per-tile fallback and require no migration for this extraction.
|
|
|
|
## Diagnostics and observability
|
|
|
|
The resolver emits no logs. Its verifier records path/identity/transform/source
|
|
contracts and bounded 20,000-triple timing. WMO queue/cache/instance metrics remain
|
|
in the facade/loader diagnostic snapshot.
|
|
|
|
## Verification
|
|
|
|
- `verify_wmo_placement_resolver.gd`: slash/case/empty path, positive UID,
|
|
missing/zero/negative UID fallback, default and rotated/scaled transform,
|
|
unclamped scale, historical Node3D property equivalence, stateless results,
|
|
all loader adapters, dependency boundary
|
|
and bounded timing.
|
|
- Existing WMO material/cache/shutdown and renderer baseline regressions remain
|
|
required alongside M2/terrain/facade/internal-access/coordinate gates.
|
|
- Fidelity evidence is exact extraction of current placement rules. No new
|
|
original-client WMO visual/portal/material parity claim is made.
|
|
|
|
## Extension points
|
|
|
|
- A later package may extract WMO registry ownership/ref release using these
|
|
stable keys.
|
|
- Render-group build cursor and resource-selection state require separate
|
|
lifecycle/cancellation contracts.
|
|
|
|
## Capability status
|
|
|
|
| Capability | Status | Evidence | Gap/next step |
|
|
|---|---|---|---|
|
|
| Consistent WMO placement identity/transform | Implemented extraction | Contract/source/timing verifier | Asset-backed placement comparison pending |
|
|
| WMO registry/build services | Remains in loader | Existing runtime regressions | Stateful extraction pending |
|
|
| Portals/rooms/material fidelity | Partial | M00 checkpoint/material evidence | Broader WMO implementation pending |
|
|
|
|
## Known gaps and risks
|
|
|
|
- Raw placement Dictionaries remain the parser/cache boundary.
|
|
- Old caches without UID cannot dedupe one WMO across ADT tile boundaries.
|
|
- WMO scale remains intentionally unclamped, including zero/negative input.
|
|
- Asset-backed visual/p95/p99 evidence is unavailable in this package.
|
|
|
|
## Source map
|
|
|
|
| Path | Responsibility |
|
|
|---|---|
|
|
| `src/render/wmo/wmo_placement_resolver.gd` | Path, identity and transform rules |
|
|
| `src/scenes/streaming/streaming_world_loader.gd` | Registry/cache/build/resource/Node ownership |
|
|
| `src/tools/verify_wmo_placement_resolver.gd` | Contract, source and timing regression |
|
|
|
|
## Related decisions and references
|
|
|
|
- [`world-renderer.md`](world-renderer.md)
|
|
- [`../../RENDER.md`](../../RENDER.md)
|
|
- [`../../targets/roadmap/02-rendering-and-graphics.md`](../../targets/roadmap/02-rendering-and-graphics.md)
|