WOC load caps tris at 2M and clamps tile coords to 0..63. Save
previously wrote raw size() and tileX/Y — a >2M-tri collision
would be silently rejected on round-trip, and OOR tile coords
would log a warning every reload. Cap at save and reuse the
load-side clamp so the on-disk file is round-trip clean.
In-memory collision can be polluted by addMesh on bad input (e.g. a
WMO with NaN vertex positions). Without this, the save would persist
that NaN into the WOC and the load-time guards would have to clean
it up forever. Now scrubs vertices and bounds at write time, matching
the WHM save sanitize.
Header sanity bounds for WOC matching the WOM/WoB ones. A whole-tile
collision mesh maxes at ~32K terrain tris + a few thousand building
overlay tris; triCount > 2M is corrupted and would OOM. Tile coords
are 0..63 in WoW; clamp to 32 with warning when bogus.
The walkability classifier did glm::normalize(cross(...)) without
guarding for zero-length cross. A flat-on-itself triangle (e.g. all
three vertices at the same height in a hole-edge case) produces NaN
normal, NaN walkability flag, and crashes the downstream nz check.
Now the cross-length is computed once and the triangle is skipped if
it's effectively zero.
NaN vertices in collision triangles produce NaNs in ray-triangle
intersection (used by movement collision queries), making the player
phase through walls or fall through the floor. Degenerate triangles
(zero-area, collinear) similarly produce NaN normals. Now both are
sanitized/skipped on load and the count is reported in the log.
WoweeCollision previously only contained terrain triangles; placed WMO
buildings had no collision in the exported zone, so players could walk
through walls. Added WoweeCollisionBuilder::addMesh() that transforms a
local-space mesh into world space with slope-based walkability flags,
and the editor's exportZone now walks every placed WMO and feeds each
group's geometry through it. Indoor vs outdoor groups are tagged via
the WMO group flag.
New format: WOC (Wowee Open Collision) — binary collision mesh for
custom zone walkability. Magic WOC1 (0x31434F57).
- WoweeCollisionBuilder::fromTerrain() generates collision triangles
from terrain heightmap with slope classification (50 deg threshold)
- Per-triangle flags: walkable (0x01), water (0x02), steep (0x04)
- Respects terrain holes (skips triangles in hole regions)
- Binary save/load with bounds, tile coords, triangle data
- Auto-exported on zone save alongside WOT/WHM/WOM/WOB
- Added to content pack validation (score now 0-7)
- FORMAT_SPEC.md v1.1 updated with WOC binary layout
- 19 new test assertions: flat terrain generation (32k tris all
walkable), save/load round-trip, hole skipping
- 328 total assertions across 84 test cases
