import { type TraceFunction } from './perception.js';
import type { Entity } from '../entities/entity.js';
import type { EntitySystem } from '../entities/system.js';
export { rangeTo as range, RangeCategory as Range } from './perception.js';
export interface TargetAwarenessState {
    timeSeconds: number;
    frameNumber: number;
    sightEntity: Entity | null;
    sightEntityFrame: number;
    soundEntity: Entity | null;
    soundEntityFrame: number;
    sound2Entity: Entity | null;
    sound2EntityFrame: number;
    sightClient: Entity | null;
}
export interface HearabilityHooks {
    canHear?: (self: Entity, other: Entity) => boolean;
    areasConnected?: (self: Entity, other: Entity) => boolean;
}
export declare function huntTarget(self: Entity, level: TargetAwarenessState, context: EntitySystem): void;
export interface FoundTargetOptions {
    pickTarget?: (name: string) => Entity | null;
}
export declare function foundTarget(self: Entity, level: TargetAwarenessState, context: EntitySystem, options?: FoundTargetOptions): void;
export declare function AI_GetSightClient(self: Entity, context: EntitySystem, trace: TraceFunction): Entity | null;
export declare function findTarget(self: Entity, level: TargetAwarenessState, context: EntitySystem, trace: TraceFunction, hearability?: HearabilityHooks): boolean;
export declare function ai_checkattack(self: Entity, dist: number, context: EntitySystem): boolean;
export declare function findCover(self: Entity, context: EntitySystem): boolean;
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