adrien
1c6f0ae1f1
The server sent the whole army on every snapshot and the client re-cloned the whole icon layer whenever a unit moved, so a settled world with a standing army drained the broadcast loop and the frame loop alike. - Ship only the units and city list that changed, keyed by a per-peer fingerprint and a serialised hash, and merge those deltas on the client. - Memoise the battlefield scan on a battle version bumped when a unit joins, leaves or changes side. - Skip the DOM writes for units whose snapshot object is unchanged, and cache the unit-view inner nodes. - Fold units, cities and tile markers onto the nearest world copy instead of mirroring the icon layers, which re-cloned thousands of views every frame; the small decoration layers still mirror, and only on a change. Frame work at full zoom-out with units moving fell from ~190ms to ~6.5ms.