52 commits

Author	SHA1	Message	Date
Erik	19aa8ce5d0	feat(core): Phase B.3 — TerrainSurface (outdoor heightmap Z + cell ID) ... Extracts the bilinear heightmap interpolation from GameWindow's inlined SampleTerrainZ into a reusable class. Also adds outdoor cell ID computation (8×8 grid of 24-unit cells, 0x0001..0x0040). First component of the physics collision engine. 6 new tests, all green. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-12 09:51:54 +02:00
Erik	520589911b	feat(core): Phase B.3 — CellSurface (indoor floor polygon projection) ... Projects an XY point onto a cell's floor polygons via brute-force triangle iteration + barycentric Z interpolation. Fan-triangulates quads and larger polygons. Returns null when outside all floor surfaces. Accepts pre-transformed world-space vertex positions so the caller handles EnvCell coordinate transforms. Second component of the physics collision engine. 4 new tests, all green. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-12 09:51:22 +02:00