FixedTimestep.h

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// SPDX-FileCopyrightText: 2026 Valentin Eloy
// SPDX-License-Identifier: GPL-3.0-or-later
 
#pragma once

 
namespace core {

class FixedTimestep {
public:
    explicit FixedTimestep(float fixedDeltaSeconds = 1.0f / 60.0f, int maximumStepsPerCall = 5);

    [[nodiscard]] int advance(float elapsedSeconds);

    [[nodiscard]] float fixedDeltaSeconds() const;

    [[nodiscard]] float interpolationAlpha() const;
 
private:
    float _fixedDeltaSeconds;
    int _maximumStepsPerCall;
    float _accumulator;
};
 
}  // namespace core