Struct EffectState 

pub struct EffectState<P: EffectProvider + ?Sized> {
    pub id: EffectId,
    pub host: BattlerRef,
    pub effect_order: u64,
    pub kind: P::EffectStateKind,
}

One live effect’s mutable per-instance state, held in an arena keyed by id (design §3.1). kind is the game’s typed counter enum, so the compiler checks every counter (no positional slot bag).

Fields

id: EffectId

The effect id (arena key; the arena is kept sorted for binary search).

host: BattlerRef

The battler this effect is attached to.

Kept BattlerRef (not EffectHost) so every existing struct-literal constructor compiles unchanged (see EffectHost’s non-breaking note). Project to the 3-way scope via EffectState::host_scope.

effect_order: u64

Monotonic creation counter — the final deterministic tiebreak in the comparator (design §1.3), stamped at creation, consumes NO rng.

kind: P::EffectStateKind

The game’s typed counter state.

Implementations

impl<P: EffectProvider + ?Sized> EffectState<P>

pub fn host_scope(&self) -> EffectHost

The 3-way host scope of this effect (design §3.1). Arena effects are always battler-hosted today, so this returns EffectHost::Battler; the method is the routing seam the driver uses so a future side/field-hosted state path can branch on scope without callers caring how host is stored.

Trait Implementations

impl<P: EffectProvider + ?Sized> Clone for EffectState<P>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.