npc_engine_core

Trait Domain

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pub trait Domain: Sized + 'static {
    type State: Debug + Sized;
    type Diff: Debug + Default + Clone + Hash + Eq;
    type DisplayAction: Debug + Default;

    // Required methods
    fn list_behaviors() -> &'static [&'static dyn Behavior<Self>];
    fn get_current_value(
        tick: u64,
        state_diff: StateDiffRef<'_, Self>,
        agent: AgentId,
    ) -> AgentValue;
    fn update_visible_agents(
        start_tick: u64,
        tick: u64,
        state_diff: StateDiffRef<'_, Self>,
        agent: AgentId,
        agents: &mut BTreeSet<AgentId>,
    );

    // Provided methods
    fn get_tasks(
        tick: u64,
        state_diff: StateDiffRef<'_, Self>,
        agent: AgentId,
    ) -> Vec<Box<dyn Task<Self>>> { ... }
    fn get_state_description(_state_diff: StateDiffRef<'_, Self>) -> String { ... }
    fn get_new_agents(_state_diff: StateDiffRef<'_, Self>) -> Vec<AgentId> { ... }
    fn display_action_task_idle() -> Self::DisplayAction { ... }
    fn display_action_task_planning() -> Self::DisplayAction { ... }
}
Expand description

A domain on which the MCTS planner can plan.

Required Associated Types§

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type State: Debug + Sized

The state the MCTS plans on.

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type Diff: Debug + Default + Clone + Hash + Eq

A compact set of changes towards a State that are accumulated throughout planning.

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type DisplayAction: Debug + Default

A representation of a display action that can be fetched from a task. We need Default trait for creating the DisplayAction for the idle placeholder task.

Required Methods§

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fn list_behaviors() -> &'static [&'static dyn Behavior<Self>]

Returns all behaviors available for this domain.

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fn get_current_value( tick: u64, state_diff: StateDiffRef<'_, Self>, agent: AgentId, ) -> AgentValue

Gets the current value of the given agent in the given tick and world state.

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fn update_visible_agents( start_tick: u64, tick: u64, state_diff: StateDiffRef<'_, Self>, agent: AgentId, agents: &mut BTreeSet<AgentId>, )

Updates the list of agents which are in the horizon of the given agent in the given tick and world state.

Provided Methods§

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fn get_tasks( tick: u64, state_diff: StateDiffRef<'_, Self>, agent: AgentId, ) -> Vec<Box<dyn Task<Self>>>

Gets all possible valid tasks for a given agent in a given tick and world state.

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fn get_state_description(_state_diff: StateDiffRef<'_, Self>) -> String

Gets a textual description of the given world state. This will be used by the graph tool to show in each node, and the log tool to dump the state.

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fn get_new_agents(_state_diff: StateDiffRef<'_, Self>) -> Vec<AgentId>

Gets the new agents present in a diff but not in a state.

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fn display_action_task_idle() -> Self::DisplayAction

Gets the display actions for idle task.

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fn display_action_task_planning() -> Self::DisplayAction

Gets the display actions for planning task.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§