/// <summary>
/// Based on the MPH/KMPH settings round the current speed to the nearest STEP and
/// then increase by STEP.
/// </summary>
/// <param name="speed">Ingame speed</param>
/// <returns>Ingame speed increased by the increment for MPH or KMPH</returns>
public static SpeedValue GetNext(SpeedValue speed)
{
if (speed.GameUnits < 0f)
{
return(new SpeedValue(-1f));
}
if (GlobalConfig.Instance.Main.DisplaySpeedLimitsMph)
{
MphValue rounded = speed.ToMphRounded(MPH_STEP);
rounded += MPH_STEP;
if (rounded.Mph > UPPER_MPH)
{
rounded = new MphValue(0);
}
return(SpeedValue.FromMph(rounded));
}
else
{
KmphValue rounded = speed.ToKmphRounded(KMPH_STEP);
rounded += KMPH_STEP;
if (rounded.Kmph > UPPER_KMPH)
{
rounded = new KmphValue(0);
}
return(SpeedValue.FromKmph(rounded));
}
}
/// <summary>
/// Based on the MPH/KMPH settings round the current speed to the nearest STEP and
/// then decrease by STEP.
/// </summary>
/// <param name="speed">Ingame speed</param>
/// <returns>Ingame speed decreased by the increment for MPH or KMPH</returns>
public static SpeedValue GetPrevious(SpeedValue speed)
{
if (speed.GameUnits < 0f)
{
return(new SpeedValue(-1f));
}
if (GlobalConfig.Instance.Main.DisplaySpeedLimitsMph)
{
MphValue rounded = speed.ToMphRounded(MPH_STEP);
if (rounded.Mph == LOWER_MPH)
{
return(new SpeedValue(0));
}
if (rounded.Mph == 0)
{
return(SpeedValue.FromMph(UPPER_MPH));
}
return(SpeedValue.FromMph(rounded.Mph > LOWER_MPH
? (ushort)(rounded.Mph - MPH_STEP)
: LOWER_MPH));
}
else
{
KmphValue rounded = speed.ToKmphRounded(KMPH_STEP);
if (rounded.Kmph == LOWER_KMPH)
{
return(new SpeedValue(0));
}
if (rounded.Kmph == 0)
{
return(SpeedValue.FromKmph(UPPER_KMPH));
}
return(SpeedValue.FromKmph(rounded.Kmph > LOWER_KMPH
? (ushort)(rounded.Kmph - KMPH_STEP)
: LOWER_KMPH));
}
}
