import type { Disposable } from "@goldenratio/core-utils";
import type { Karlib } from "../karlib.js";
import type { EmitterConfig } from "./types.js";
export declare class Particle implements Disposable {
    private readonly kl;
    private readonly config;
    private readonly get_speed?;
    private readonly get_alpha?;
    private readonly get_color?;
    private readonly get_scale?;
    private readonly static_draw_texture_options?;
    private readonly animated_texture?;
    private readonly animated_draw_texture_options?;
    private readonly rot_cfg?;
    private readonly rot_static_cfg?;
    private readonly accel_cfg?;
    private age;
    private life;
    private pos;
    private direction;
    private rotation;
    private rot_speed;
    private rot_accel;
    private vel;
    private acc;
    private max_speed;
    private rotate_to_velocity;
    private use_accel_motion;
    constructor(kl: Karlib, config: EmitterConfig);
    /**
     * Called when particle is destroyed
     */
    dispose(): void;
    /**
     * Called when particle is added to pool bag
     */
    reset(): void;
    update_spawn_pos(x: number, y: number): void;
    update(delta: number): void;
    draw(): void;
    get is_alive(): boolean;
    seed_direction_from_angle(rad: number): void;
    private seed_rotation_from_behaviors;
}