export interface FixedStepResult {
    readonly steps: number;
    readonly alpha: number;
    readonly droppedTime: number;
}
export declare class FixedStepAccumulator {
    readonly fixedDelta: number;
    readonly maxSteps: number;
    private accumulator;
    constructor(fixedDelta: number, maxSteps: number);
    add(delta: number): FixedStepResult;
    get alpha(): number;
    reset(): void;
}
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