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# M03-RND-WMO-PLACEMENT-RESOLVER-001 — WMO placement resolver
<!-- OPENWC_CLAIM:M03-RND-WMO-PLACEMENT-RESOLVER-001:sindo-main-codex:2026-07-20 -->
## Ownership
- Target: M03
- Program: RND
- Owner/Agent ID: sindo-main-codex
- Branch: `work/sindo-main-codex/m03-wmo-placement-resolver`
- Lease expires UTC: 2026-07-20
- Integrator: M03 milestone integrator
## Outcome
Extract pure WMO cache-path normalization, placement identity and world-transform
resolution from the loader into a scene-free service.
## Non-goals
- Change WDT/ADT coordinate conversion or WMO placement values.
- Own WMO registry references, tile lifecycle, jobs, queues or retries.
- Load cached/live WMO resources or validate cache format versions.
- Create Nodes, Mesh/MultiMesh, materials or RIDs.
- Change portal/room/material/occlusion behavior or claim WMO parity.
## Paths
- Exclusive: `src/render/wmo/wmo_placement_resolver.gd`,
`src/tools/verify_wmo_placement_resolver.gd`,
`docs/modules/wmo-placement-resolver.md`, this claim
- Shared/hotspots: `src/scenes/streaming/streaming_world_loader.gd`,
`docs/modules/world-renderer.md`, `docs/modules/README.md`, `RENDER.md`,
`targets/03-renderer-facade.md`
- Generated/ignored: `.godot`, native DLL, generated ADT/WMO resources, caches
and proprietary renderer corpus
## Contracts and data
- `normalize_relative_path`: replace backslashes, lowercase entire cache key
- `resolve_unique_key`: positive `unique_id` becomes `uid:<decimal>`; otherwise
preserve `tile:<tile-key>:<placement-index>` fallback
- `resolve_world_transform`: defaults position/rotation to zero and scale to one;
compose the same Godot Euler basis and un-clamped uniform scale
- Three transform consumers: render-cache root, cached scene and live prototype
- Cache/schema/coordinate/profile versions: unchanged
## Dependencies
- Requires: current master `4f40c77`
- Blocks: WMO registry/build decomposition
- External state: none; tests use synthetic paths and placement dictionaries
## Verification
- Commands: dedicated path/identity/default/rotation/scale/source and bounded
timing verifier; M2/terrain/facade/internal-access/manifest/shutdown/scheduler/
streaming/coordinate/documentation/coordination gates
- Fidelity evidence: exact normalization, identity and property-transform rules
moved unchanged
- Performance budget: constant-time string/value math; no Node, Resource, RID,
task, queue, mutex, cache or file access
## Documentation deliverables
- Inline resolver API documentation
- New module spec with inputs/outputs, data-flow, lifecycle, ownership, failure,
performance, fidelity limitations and source map
- Renderer/module registry and `RENDER.md` updates
## Simplicity and naming
- Important name: `WmoPlacementResolver`
- Simplest solution: one stateless service with three explicit pure queries
- Rejected complexity: placement class hierarchy, generic model resolver,
Resources, strategies, callbacks or registry framework
- Unavoidable complexity: raw placement Dictionary remains parser boundary
- Measured optimization evidence: bounded synthetic resolver loop
## Status
- State: handoff
- Done: resolver, seven loader adapters, regressions and documentation verified
- Next: M03 integrator acceptance and merge to master
- Blocked by:
<!-- OPENWC_HANDOFF:READY:M03-RND-WMO-PLACEMENT-RESOLVER-001:05e216a -->
## Handoff
- Commit: `05e216a` (`refactor(M03): extract WMO placement resolver`)
- Results: dedicated resolver PASS (`cases=9`, `iterations=20000`,
`elapsed_ms=28.332`), including historical Node3D property equivalence;
renderer materials, M2 planner/grouper/transform/registry/dedupe, terrain
cache/LOD/queue, facade, internal-access, manifest, shutdown, scheduler,
streaming planner/focus, terrain-query and coordinate-boundary suites PASS;
editor import parsed with only expected missing private corpus diagnostics;
documentation PASS (`module_specs=19`, `required_files=7`); coordination PASS
with 23 pre-existing expired M00/M01 warnings; checkpoint dry-run planned `7/7`.
- Remaining risks: no private asset-backed WMO placement/visual/p95/p99 evidence;
old caches without positive UID retain per-tile fallback; raw Dictionaries and
WMO registry/build/resource state remain loader-owned; scale stays unclamped.
- Documentation updated: inline public API; new
`docs/modules/wmo-placement-resolver.md`; renderer module registry,
`docs/modules/world-renderer.md` and `RENDER.md`.