adrien
b2ab4d76eb
- The bombardment overlay was rebuilt every animation frame, and each barrage scanned the whole army to find its target (O(strikes x units)). It now redraws at most at the renderer's 24 fps, reuses its SVG/DOM nodes, and resolves garrisons from one per-snapshot tile index, so a high-refresh display no longer makes a big battle worse. - Route truncation had the same shape: every step of every route rescanned every unit. The snapshot now buckets the army by tile once. - Idle units no longer have identical left/top rewritten every frame, and the whole-map fog buffer is rebuilt less often. - Snapshot traffic: cityStats and visible are delta-encoded like territory and population, city stats carry a content-hash version, tile ethnicity is memoised, and a city's economy is derived once per broadcast instead of twice. A per-peer civ change now forces a full snapshot, since the visible set is per-viewer.