Traversal System

Build the traversal layer of an open-world or action game — the system above the character controller (character-controller owns the movement states, stamina rates, and the mantle cascade basics; this skill owns the world data, the verb catalog, the technical implementation, mounts/vehicles, and the economy). References: BotW/TotK and Genshin (the systemic-climbing school), broadened with the parkour/momentum tradition (Mirror's Edge, Titanfall 2, Spider-Man) and the mount/vehicle canon (RDR2, Elden Ring, Death Stranding).

The architecture rule

Traversal is a dialogue between world markup and player verbs.