applyExact()

void fl::TimeWarp::applyExact ( fl::u32 timeNow )

private

Definition at line 52 of file time.cpp.hpp.

                                       {
    // Handle time going backwards - reset if this happens
    if (timeNow < mLastRealTime) {
        FL_WARN("TimeWarp::applyExact: time went backwards, resetting");
        reset(timeNow);
        return;
    }
 
    fl::u32 elapsedRealTime = timeNow - mLastRealTime;
    mLastRealTime = timeNow;
 
    // Calculate scaled time difference with bounds checking
    float scaledTime = elapsedRealTime * mTimeScale;
 
    // Check for overflow/underflow before casting to int32_t
    // int32_t range is [-2147483648, 2147483647]
    if (scaledTime > 2147483647.0f) {
        scaledTime = 2147483647.0f;
    } else if (scaledTime < -2147483648.0f) {
        scaledTime = -2147483648.0f;
    }
 
    i32 diff = static_cast<i32>(scaledTime);
    if (diff == 0) {
        return;
    }
    if (diff >= 0) {
        mRelativeTime += diff;
        return;
    }
 
    // diff < 0
    fl::u32 abs_diff = -diff;
    if (abs_diff > mRelativeTime) {
        // Protection against rollover.
        mRelativeTime = 0;
        mLastRealTime = timeNow;
        return;
    }
    mLastRealTime = timeNow;
    mRelativeTime -= abs_diff;
}

References FL_WARN, mLastRealTime, mRelativeTime, mTimeScale, and reset().

Referenced by update().

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