export interface DashConfig {
    distance: number;
    durationMs: number;
    iframes: {
        fromMs: number;
        toMs: number;
    };
    staminaCost: number;
    staminaMax: number;
    staminaRegenPerSecond: number;
    cooldownMs: number;
}
export interface DashDirection {
    x: number;
    z: number;
}
export type DashRejection = {
    reason: "no-stamina" | "cooldown" | "dashing";
};
export interface DashBurst {
    direction: DashDirection;
    durationMs: number;
    distance: number;
}
/** @internal */
export declare function iframeActive(config: DashConfig, elapsedMs: number): boolean;
/** @internal */
export declare function dashEase(t: number): number;
/**
 * Compute a dash/dodge burst's displacement over its window, with i-frame timing for dodges.
 *
 * @capability dash-move a dash/dodge burst with i-frames and cooldown
  * @internal
  */
export declare function dashDisplacement(config: DashConfig, dir: DashDirection, elapsedMs: number): [number, number, number];
/** @internal */
export declare function dashOffset(config: DashConfig, dir: DashDirection, elapsedMs: number): [number, number, number];
/** @internal */
export declare function dashFrameDelta(config: DashConfig, dir: DashDirection, previousElapsedMs: number, elapsedMs: number): [number, number, number];
export interface DashState {
    tryDash(direction: DashDirection, nowMs: number): DashRejection | DashBurst;
    tick(dtSeconds: number, nowMs: number): void;
    stamina(): number;
    staminaFraction(): number;
    isDashing(nowMs: number): boolean;
    isInvulnerable(nowMs: number): boolean;
    displacement(nowMs: number): [number, number, number];
    offset(nowMs: number): [number, number, number];
}
/** @internal */
export declare function createDashState(config: DashConfig): DashState;