#include "core/system/delta_time.hpp"

#include <SDL3/SDL.h>

namespace DeltaTime {

    namespace {
        Uint64 last_time_ms = 0;
    }

    void reset() {
        last_time_ms = SDL_GetTicks();
    }

    auto tick() -> float {
        const Uint64 NOW_MS = SDL_GetTicks();
        const float DELTA_S = static_cast<float>(NOW_MS - last_time_ms) / 1000.0F;
        last_time_ms = NOW_MS;
        return DELTA_S;
    }

}  // namespace DeltaTime