public static int Delta(ForwardDeltaSimulationFrame beforeDeltaFrame, ForwardDeltaSimulationFrame currentDeltaFrame)
{
var delta = 0;
var beforeShort = beforeDeltaFrame.DeltaFrame;
var current = currentDeltaFrame.DeltaFrame;
if (current < beforeShort)
{
// Wrap around
delta = (256 - beforeShort) + current;
}
else
{
delta = current - beforeShort;
}
if (delta > 127)
{
throw new Exception($"short simulation frames are too close {beforeShort} and {current}");
}
return(delta);
}
public static AbsoluteSimulationFrame ToSimulationFrame(AbsoluteSimulationFrame simulationFrameReference, ForwardDeltaSimulationFrame shortSimulationFrame)
{
var referenceShort = FromSimulationFrame(simulationFrameReference);
var delta = Delta(referenceShort, shortSimulationFrame);
return(new AbsoluteSimulationFrame {
Frame = simulationFrameReference.Frame + delta
});
}