import type { Vec3 } from '@quake2ts/shared';
import type { Entity } from '../entities/entity.js';
export declare enum RangeCategory {
    Melee = "melee",
    Near = "near",
    Mid = "mid",
    Far = "far"
}
export interface TraceResult {
    readonly fraction: number;
    readonly ent: Entity | null;
}
export type TraceFunction = (start: Vec3, mins: Vec3 | null, maxs: Vec3 | null, end: Vec3, passent: Entity | null, contentmask: number) => TraceResult;
export declare function rangeTo(self: Entity, other: Entity): number;
export declare function classifyRange(distance: number): RangeCategory;
export declare function infront(self: Entity, other: Entity): boolean;
export interface VisibleOptions {
    throughGlass?: boolean;
    timeSeconds?: number;
    random?: () => number;
}
export declare function visible(self: Entity, other: Entity, trace: TraceFunction, options?: VisibleOptions): boolean;
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