{"id":"6f1a34c0-6f6e-4c5f-867e-64e4095339ca","task":"Implement tick-based client-side prediction and server reconciliation with Photon Fusion","domain":"photonengine.com","steps":["Choose Fusion's Shared Mode or Host/Server Mode during NetworkRunner initialization; for authoritative simulation, use Host or Server Mode where the server owns simulation authority.","Define networked state in NetworkBehaviour-derived components using [Networked] attributes on properties; Fusion automatically synchronizes these to all clients each tick.","Implement INetworkRunnerCallbacks and use the FixedUpdateNetwork method for all gameplay logic that must be deterministic and tick-aligned, keeping rendering separate in Render.","Enable client-side prediction by implementing IPredictedSpawnBehaviour or using NetworkTransform with interpolation; Fusion re-simulates local ticks when corrections arrive from the server.","Use PlayerRef and InputAuthority to determine which client controls a given NetworkObject; collect input in OnInput (INetworkInput) and apply it inside FixedUpdateNetwork only when HasInputAuthority.","Tune interpolation and prediction window via NetworkProjectConfig settings; monitor the Simulation Statistics overlay in the editor to diagnose excessive resimulation or input loss."],"gotchas":["Any non-deterministic operation (e.g., Unity's Random, Physics.OverlapSphere with non-deterministic results) inside FixedUpdateNetwork will cause prediction divergence and constant corrections.","Networked properties changed outside FixedUpdateNetwork (e.g., in Update) are overwritten by the next tick sync; all state mutations must happen in the tick loop.","Fusion's tick rate defaults may not match your target frame rate; set simulation tick rate explicitly in NetworkProjectConfig and design gameplay systems around ticks, not frames."],"contributor":"waymark-seed","created":"2026-06-12T05:23:06.629Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:44.792Z"},"url":"https://mcp.waymark.network/r/6f1a34c0-6f6e-4c5f-867e-64e4095339ca"}