Veloren rtsim2 data model ideas

rtsim2.rs

// Top-level rtsim state. The contents of this struct are entirely sufficient to describe the state of the world.
struct RtState {
    temporal: &mut Temporal,

    agents: &mut Agents,
}

// Contains tick-by-tick information such as decision tree state, short-term planning, aggro, current activity, etc.
// Agents can be both single characters and groups of characters (see `Groups`).
struct Agents { ... }

// Contains short-term information about world state. We probably won't be persisting this data for now (because it's
// liable to rapidly change), but it is desirable to persist it eventually.
struct Temporal {
    civ_state: &mut World,

    quests: &mut Quests,
    characters: &mut Characters,
    groups: &mut Groups,
}

// Contains questing information: quest givers, receivers, goals, etc.
struct Quests { ... }

// Contains character position, identity, faction membership, goals, opinions of other characters, etc.
struct Characters { ... }

// Contains information about character groups (armies, bandits, merchants, etc.)
// Groups are more short-term than factions and may appear and disband relatively quickly as the goals of the
// characters in them change. Group membership is broadly governed by each agent, but being a member of a group implies
// submitting to the will of the group (i.e: it is its own centralised AI system)
struct Groups { ... }

// Contains long-term world state, simulated using large ticks (~1 month, perhaps?)
// This data can only be updated during server startup, we progress it forwards according to IRL time passed (maybe
// configurable?)
struct World {
    // Never mutated after being created! If we want to modify the world, it needs to be done in `Nature`.
    terrain: &Terrain,

    nature: &mut Nature,
    economy: &mut Economy,
    sites: &mut Sites,
    factions: &mut Factions,
    diplomacy: &mut Diplomacy,
}

// Contains currently persisted erosion map
struct Terrain { ... }

// Contains river/ocean state, caves, temperature, humidity, tree cover, etc.
struct Nature { ... }

// Contains site stockpiles, workforce allocation, trade data, site knowledge of prices, etc.
// TODO: Maybe combine this with `Sites`?
struct Economy { ... }

// Contains site demographics, plot/tile/building information, site planning state, etc.
struct Sites { ... }

// Contains faction information (ideology, goals, etc.), membership across sites, control of sites, AI state, etc.
struct Factions { ... }

// Contains diplomatic state between factions, etc.
struct Diplomacy { ... }