/// <summary>
/// Swap items between two cells
/// </summary>
/// <param name="firstCell"> Cell </param>
/// <param name="secondCell"> Cell </param>
public void SwapItems(DragAndDropCell firstCell, DragAndDropCell secondCell)
{
if ((firstCell != null) && (secondCell != null))
{
DragAndDropItem firstItem = firstCell.GetItem(); // Get item from first cell
DragAndDropItem secondItem = secondCell.GetItem(); // Get item from second cell
// Swap items
if (firstItem != null)
{
firstItem.transform.SetParent(secondCell.transform, false);
firstItem.transform.localPosition = Vector3.zero;
firstItem.MakeRaycast(true);
}
if (secondItem != null)
{
secondItem.transform.SetParent(firstCell.transform, false);
secondItem.transform.localPosition = Vector3.zero;
secondItem.MakeRaycast(true);
}
// Update states
firstCell.UpdateMyItem();
secondCell.UpdateMyItem();
firstCell.UpdateBackgroundState();
secondCell.UpdateBackgroundState();
}
}
/// <summary>
/// Put item into this cell.
/// </summary>
/// <param name="item">Item.</param>
private void PlaceItem(DragAndDropItem item)
{
if (item != null)
{
DestroyItem(); // Remove current item from this cell
myDadItem = null;
DragAndDropCell cell = item.GetComponentInParent <DragAndDropCell>();
if (cell != null)
{
if (cell.unlimitedSource == true)
{
string itemName = item.name;
item = Instantiate(item); // Clone item from source cell
item.name = itemName;
}
}
item.transform.SetParent(transform, false);
item.transform.localPosition = Vector3.zero;
item.MakeRaycast(true);
myDadItem = item;
}
UpdateBackgroundState();
}
/// <summary>
/// On any item drag start need to disable all items raycast for correct drop operation
/// </summary>
/// <param name="item"> dragged item </param>
private void OnAnyItemDragStart(DragAndDropItem item)
{
UpdateMyItem();
if (myDadItem != null)
{
myDadItem.MakeRaycast(false); // Disable item's raycast for correct drop handling
if (myDadItem == item) // If item dragged from this cell
{
// Check cell's type
switch (cellType)
{
case CellType.DropOnly:
DragAndDropItem.icon.SetActive(false); // Item can not be dragged. Hide icon
break;
}
}
}
}