private ITouchInputHandler TouchInputHandler(bool setDragHandler)
{
var hitComponent = Mode == RaycastMode.Physics3D ? (Component)RaycastTouchPosition() : OverlapTouchPosition2D();
if (!hitComponent)
{
return(null);
}
var handler = hitComponent.GetComponent <ITouchInputHandler>();
if (setDragHandler)
{
_dragHandler = hitComponent.GetComponent <IDragInputHandler>();
}
return(handler);
}
private void Update()
{
// POINTER DOWN
if (Input.GetMouseButtonDown(0))
{
// cache the pointer down time to test for tapping later
_lastMouseDownTime = Time.time;
// find an ITouchInputHandler and also search for an IDragInputHandler
var handler = TouchInputHandler(true);
// handle events
if (handler != null)
{
handler.HandleTouchDown(Input.mousePosition);
}
if (_dragHandler != default(IDragInputHandler))
{
_dragHandler.HandleBeginDrag(Input.mousePosition);
}
if (OnTouchDown != null)
{
OnTouchDown(Input.mousePosition);
}
}
// POINTER PRESSED
else if (Input.GetMouseButton(0))
{
// calculate the difference between pointer position this frame and last frame
var touchPositionDelta = (Vector2)Input.mousePosition - _oldTouchPos;
// find an ITouchInputHandler but don't search for a new IDragInputHandler
var handler = TouchInputHandler(false);
//handle events
if (handler != null)
{
handler.HandleTouchUpdate(Input.mousePosition, touchPositionDelta);
}
if (_dragHandler != default(IDragInputHandler))
{
_dragHandler.HandleUpdateDrag(Input.mousePosition, touchPositionDelta);
// if this is true, stop dragging even before the pointer up event
if (_dragHandler.ForceDrop())
{
_dragHandler.HandleEndDrag(Input.mousePosition);
_dragHandler = default(IDragInputHandler);
}
}
if (OnTouchUpdate != null)
{
OnTouchUpdate(Input.mousePosition, touchPositionDelta);
}
}
// POINTER UP
else if (Input.GetMouseButtonUp(0))
{
// find an ITouchInputHandler but don't search for a new IDragInputHandler
var handler = TouchInputHandler(false);
// handle events
if (handler != null)
{
handler.HandleTouchUp(Input.mousePosition);
}
if (_dragHandler != default(IDragInputHandler))
{
_dragHandler.HandleEndDrag(Input.mousePosition);
_dragHandler = null;
}
if (OnTouchUp != null)
{
OnTouchUp(_oldTouchPos);
}
// if pointer up happened soon after pointer down, fire the tap event as well
if (Time.time - _lastMouseDownTime <= ClickTime)
{
if (handler != null)
{
handler.HandleTouchTap(Input.mousePosition);
}
if (OnTouchTap != null)
{
OnTouchTap(Input.mousePosition);
}
}
}
// cache this to work out the delta position in the next frame
_oldTouchPos = Input.mousePosition;
}
