World Time & Weather

Build the time-of-day + weather layer of an open-world game — systems first: the clock, the weather state machine, their gameplay consumers, the scheduler, and the rendering integration. References: BotW/TotK (the best-datamined implementation in the genre) and Genshin (the server-clock model), broadened with the simulation-driven weather (RDR2, Sea of Thieves), seasonal (Stardew, RimWorld), and rendering (Nubis, Hillaire) traditions.

The architecture rule

One clock service, one weather service — both publish; nobody polls the raw clock.