/// <summary>
/// Read the data at current cursor on the ring buffer then move forward by 1.
///
/// If too many touches had passed that it loops over the ring buffer and overwritten your current cursor position,
/// this read automatically change the cursor to be the earliest touch and start from there.
/// </summary>
/// <param name="ntd">When returning `false`, this is a `default` value and should not be used.</param>
/// <returns>`true` when there is a remaining touch to get. This is to be used with `while` loop.</returns>
/// <exception cref="InvalidOperationException">Thrown when you use this while in <see cref="NativeTouch.StartOption.fullMode">.</exception>
public bool TryGetAndMoveNext(out NativeTouchData ntd)
{
if (NativeTouch.IsFullMode)
{
throw new InvalidOperationException("You cannot TryGetAndMoveNext() while Native Touch is in full mode. Use TryGetAndMoveNextFull() instead.");
}
EnterCriticalSection();
CatchUpIfRequired();
//Debug.Log($"{currentCursor} vs {NativeTouch.finalCursor}");
if (currentCursor < NativeTouch.finalCursor)
{
int getIndex = currentCursor % NativeTouch.activeRingBufferSize;
ntd = NativeTouch.ntdRingBuffer[getIndex];
//Debug.Log($"Dequeued {ntd} at {getIndex}");
ExitCriticalSection();
currentCursor++;
return(true);
}
else
{
ExitCriticalSection();
ntd = default(NativeTouchData);
return(false);
}
}
internal static void NativeTouchMinimalCallback(NativeTouchData ntd)
{
switch (ntd.CallbackType)
{
case TouchPhase.Began: minimalCallbacksBegan.Invoke(ntd); break;
case TouchPhase.Ended: minimalCallbacksEnded.Invoke(ntd); break;
case TouchPhase.Canceled: minimalCallbacksCancelled.Invoke(ntd); break;
case TouchPhase.Moved: minimalCallbacksMoved.Invoke(ntd); break;
}
}
internal static void NativeTouchMinimalCallbackRingBuffer(int start, int count)
{
int currentIndex = start;
do
{
//No mutex is required for this read, since this continues immediately after the native side itself writes. No one else could be writing at this moment.
NativeTouchData ntd = NativeTouch.ntdRingBuffer[currentIndex];
switch (ntd.CallbackType)
{
case TouchPhase.Began: minimalCallbacksBegan.Invoke(ntd); break;
case TouchPhase.Ended: minimalCallbacksEnded.Invoke(ntd); break;
case TouchPhase.Canceled: minimalCallbacksCancelled.Invoke(ntd); break;
case TouchPhase.Moved: minimalCallbacksMoved.Invoke(ntd); break;
}
currentIndex = (currentIndex + 1) % NativeTouch.activeRingBufferSize;
count--;
}while (count > 0);
}
