internal void Update(FingerPhase newPhase, Vector2 newPos)
{
// validate phase transitions
if (phase != newPhase)
{
// In low framerate situations, it is possible to miss some input updates and thus
// skip the "Ended" phase
if (newPhase == FingerPhase.None && phase != FingerPhase.Ended)
{
Debug.LogWarning("Correcting bad FingerPhase transition (FingerPhase.Ended skipped)");
Update(FingerPhase.Ended, PreviousPosition);
return;
}
// cannot get a Moved or Stationary phase without being down first
if (!down && (newPhase == FingerPhase.Moved || newPhase == FingerPhase.Stationary))
{
Debug.LogWarning("Correcting bad FingerPhase transition (FingerPhase.Began skipped)");
Update(FingerPhase.Began, newPos);
return;
}
if ((down && newPhase == FingerPhase.Began) || (!down && newPhase == FingerPhase.Ended))
{
Debug.LogWarning("Invalid state FingerPhase transition from " + phase + " to " + newPhase + " - Skipping.");
return;
}
}
else // same phase as before
{
if (newPhase == FingerPhase.Began || newPhase == FingerPhase.Ended)
{
Debug.LogWarning("Duplicated FingerPhase." + newPhase.ToString() + " - skipping.");
return;
}
}
if (newPhase != FingerPhase.None)
{
if (newPhase == FingerPhase.Ended)
{
// release
down = false;
}
else
{
if (newPhase == FingerPhase.Began)
{
// activate
down = true;
startPos = newPos;
prevPos = newPos;
startTime = Time.time;
}
prevPos = pos;
pos = newPos;
deltaPos = pos - prevPos;
}
}
phase = newPhase;
}
