/**
 * HitboxSystem.ts
 *
 * Hitbox/hurtbox management: active frame windows,
 * hit registration with deduplication, and knockback vectors.
 *
 * @module combat
 */
export interface Hitbox {
    id: string;
    ownerId: string;
    x: number;
    y: number;
    z: number;
    width: number;
    height: number;
    depth: number;
    damage: number;
    knockbackX: number;
    knockbackY: number;
    activeStart: number;
    activeEnd: number;
    group: string;
}
export interface Hurtbox {
    id: string;
    entityId: string;
    x: number;
    y: number;
    z: number;
    width: number;
    height: number;
    depth: number;
}
export interface HitEvent {
    hitboxId: string;
    hurtboxId: string;
    attackerId: string;
    defenderId: string;
    damage: number;
    knockbackX: number;
    knockbackY: number;
}
export declare class HitboxSystem {
    private hitboxes;
    private hurtboxes;
    private currentFrame;
    private hitLog;
    private events;
    addHitbox(hb: Hitbox): void;
    addHurtbox(hb: Hurtbox): void;
    removeHitbox(id: string): void;
    removeHurtbox(id: string): void;
    update(frame: number): HitEvent[];
    private overlaps;
    clearHitLog(): void;
    getHitCount(): number;
    getLastEvents(): HitEvent[];
}
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