public void OnDrop(PointerEventData eventData)
{
if (!UIDrag.Dragging[eventData.pointerId].OnEndDrag)
{
UIDrag.Dragging[eventData.pointerId].Object.GetComponent <UIDrag>()
.OnEndDrag(eventData); //Ensure execution order OnBeginDrag -> OnDrag -> OnEndDrag -> OnDrop
}
if (UIDrag.Dragging[eventData.pointerId].OnDrop)
{
return;
}
//Debug.Log("OnDrop " + eventData.pointerId);
UIDrag.Dragging[eventData.pointerId].Object.SnapTo(this);
if (Stored != null)
{
Destroy(Stored.gameObject); //remove old to replace to new object
Stored = null;
}
Stored = UIDrag.Dragging[eventData.pointerId].Object;
UIDrag.Dragging[eventData.pointerId].Object.CurrentContainer = this;
OnDropFinishHandler.Invoke(UIDrag.Dragging[eventData.pointerId].Object); //alias to OnDropFinish
OnDropFinish(UIDrag.Dragging[eventData.pointerId].Object); //alias to OnDropFinishHandler
UIDrag.Dragging[eventData.pointerId].OnDrop = true;
//UIDrag.Dragging[eventData.pointerId] = null;
}
public void DestroyItemStored()
{
if (Stored != null)
{
Destroy(Stored.gameObject);
Stored = null;
}
}
//Override this if you want a custom drop logic
public virtual bool CanDrop(PointerEventData eventData, UIDrag draggingObject)
{
if (RectTransformUtility.RectangleContainsScreenPoint(transform as RectTransform, eventData.position,
eventData.enterEventCamera)) //to make sure that the object will be inside a slot
{
if (SwapItems)
{
return(true);
}
if (Exclusive && Stored != null)
{
return(false);
}
return(true);
}
Debug.Log("Refused by cursor location.");
return(false);
}
public void OnEndDrag(PointerEventData eventData)
{
if (Dragging[eventData.pointerId].OnEndDrag)
{
return;
}
//Debug.Log("OnEndDrag " + eventData.pointerId);
UIDrop droppedTarget = null;
foreach (UIDrop targetSlot in hovered)
{
//Debug.Log("Hovering " + targetSlot.transform.name);
if (targetSlot != CurrentContainer && targetSlot.CanDrop(eventData, this)
) //prevent self-container swap and drop check
{
UIDrag other = targetSlot.Stored;
UIDrop destinationContainer = targetSlot;
UIDrop originContainer = CurrentContainer;
if (targetSlot.SwapItems)
{
if (targetSlot.Stored != null)
{
other.SnapTo(originContainer, true); //move other UIDrag to origin UIDrop
other.CurrentContainer = originContainer;
other.CanvasGroup.blocksRaycasts = true;
originContainer.Stored = other;
destinationContainer.Stored = null;
CurrentContainer = null;
Debug.Log("Swapped");
Debug.Log("Other[" + other.name + "] container: " + other.CurrentContainer.name +
" | Origin Container[" + originContainer.name + "]: " +
originContainer.Stored.name);
other.OnSlotChanged(destinationContainer, originContainer);
}
else
{
if (originContainer != null)
{
originContainer.Stored = null;
}
CurrentContainer = null;
}
}
else
{
if (originContainer != null)
{
originContainer.Stored = null; //remove reference from container
}
CurrentContainer = null;
}
droppedTarget = destinationContainer;
OnSlotChanged(originContainer, destinationContainer);
break;
}
Debug.Log("Valid container[" + targetSlot.name + "] = " + (targetSlot != CurrentContainer) +
" | Can be dropped = " + targetSlot.CanDrop(eventData, this));
}
if (droppedTarget == null)
{
Dragging[eventData.pointerId].OnDrop = true; //prevent OnDrop execution when cant drop
if (DestroyOnDropInvalid)
{
if (CurrentContainer != null)
{
CurrentContainer.Stored = null; //remove reference from container
}
Destroy(gameObject);
return;
}
if (ReturnoToStart)
{
RestoreAll(ReturnWillBeAnimated); //back to slot position
}
}
forceCleanAllHover();
CanvasGroup.blocksRaycasts = true;
OnDragEnd(eventData);
Dragging[eventData.pointerId].OnEndDrag = true;
if (droppedTarget != null)
{
droppedTarget.OnDrop(eventData);
}
}
public DraggingObject(int id, UIDrag theObject, RectTransform plane = null)
{
ID = id;
Object = theObject;
Plane = plane;
}
protected virtual void OnDropFinish(UIDrag draggedObject)
{
}
