/// <summary>
/// Update all the trackers available and find and kill any unused ones.
/// </summary>
private void UpdateTrackers()
{
// Set all trackers to be killed, if they arent picked up again during the frame, they arnt being used.
foreach (InputTracker tracker in _trackers)
{
tracker.KillTracker();
}
if (Application.platform == RuntimePlatform.IPhonePlayer || Application.platform == RuntimePlatform.Android)
{
//update or start trackers.
int i = 0, l = UnityEngine.Input.touchCount;
for (; i < l; ++i)
{
Touch t = UnityEngine.Input.GetTouch(i);
// try to get our tracker for this finger id
InputTracker tracker = _trackerLookup.ContainsKey(t.fingerId) ? _trackerLookup[t.fingerId] : null;
if (tracker != null)
{
tracker.UpdateTracker(t.position);
}
else
{
tracker = BeginTracking(t.fingerId, t.position);
}
}
}
else
{
// try to get our tracker for the mouse or simulated second finger.
InputTracker tracker = null;
if (UnityEngine.Input.GetMouseButton(0))
{
tracker = _trackerLookup.ContainsKey(0) ? _trackerLookup[0] : null;
if (tracker != null)
{
tracker.UpdateTracker(UnityEngine.Input.mousePosition);
}
else
{
tracker = BeginTracking(0, UnityEngine.Input.mousePosition);
}
}
tracker = null;
if (UnityEngine.Input.GetKey(KeyCode.LeftCommand) || UnityEngine.Input.GetKey(KeyCode.LeftControl))
{
tracker = _trackerLookup.ContainsKey(1) ? _trackerLookup[1] : null;
if (tracker != null)
{
tracker.UpdateTracker(_secondaryMouseStartPosition - (UnityEngine.Input.mousePosition - _secondaryMouseStartPosition));
}
else
{
_secondaryMouseStartPosition = UnityEngine.Input.mousePosition - Vector3.right * 50;
tracker = BeginTracking(1, _secondaryMouseStartPosition - Vector3.right * 50);
}
}
}
}