adrien
bb097ea601
Marching into unexplored or enemy land reveals a tile every step, and each reveal rebuilt the whole-map fog mesh: about 1.8M vertices and 50 MB on a 160x160 map, regenerated at the rebuild throttle. Walking through already-explored home land reveals nothing, which is why the stutter only showed up on a border crossing, with a single unit. - buildKnowledge now takes a row range and builds only the rows on screen; the row table stays full length so the existing row-banded draw keeps working. - _flushFog rebuilds on a visibility change or a pan to a new row band, still coalesced, and the draw clamps to the band that was built. - A mode/zoom change schedules the band rebuild instead of building the whole mesh, and uniform interior tiles skip the per-vertex blur kernel.