import Barrage from './barrage';
import { BulletFieldHook } from './builtin/field';
import { BulletJudgeHook } from './builtin/judge';
import Coordinate, { Point } from './coordinate';
import CanvasPoint, { PointOptions } from './point';
declare type JudgeType = 'square' | 'ortho' | 'tangent' | BulletJudgeHook;
declare type FieldType = 'viewport' | 'distant' | 'timing' | BulletFieldHook;
interface BulletPoint {
    /** judge type (default: `ortho`) */
    judgeType?: JudgeType;
    /** field type (default: `viewport`) */
    fieldType?: FieldType;
    /** origin point */
    origin?: string | Point;
    /** display layer */
    layer?: number;
}
export interface BulletOptions extends PointOptions<Bullet>, BulletPoint {
}
export interface BulletReferences {
    [key: string]: Coordinate;
    player?: Coordinate;
    origin?: Coordinate;
    source?: Coordinate;
}
export default class Bullet extends CanvasPoint implements Point, BulletPoint {
    layer: number;
    judgeType: JudgeType;
    fieldType: FieldType;
    rho?: number;
    theta?: number;
    /** attribute from field:timing */
    lifeSpan?: number;
    /** attribute from field:viewport */
    fieldBorder?: number;
    /** @public grazing */
    grazing?: boolean;
    /** @public buller id */
    $id: number;
    /** @public reference points */
    $refs: BulletReferences;
    /** @public origin point */
    $origin: Point;
    /** @public parent field */
    $parent: Barrage;
    constructor(options?: BulletOptions);
    render(): void;
    setOrigin(point: string | Point): Coordinate;
    private _resolvePoint;
    readonly $coord: Coordinate;
    polarLocate(rho?: number, theta?: number): void;
    hitPlayer(): void;
    destroy(): void;
}
export {};