public void OnDrag(PointerEventData eventData)
{
draggingSprite.transform.position = eventData.position;
// Check if hovering
List <RaycastResult> results = new List <RaycastResult>();
EventSystem.current.RaycastAll(eventData, results);
// Find what we might be hovering over
UISlotRef hover = FindSlotAtPointer(eventData);
// If they are different, we end an old hover and start a new one
if (prevHover.container != hover.container || prevHover.slot != hover.slot)
{
if (prevHover.slot && prevHoverSlot.container != null)
{
prevHover.slot.Highlighted = false;
}
else if (prevHover.container && uiInventory.CanMoveItem(holding.container, holding.index, prevHover.container))
{
prevHover.container.Highlighted = false;
}
prevHover = hover;
if (hover.slot)
{
var hoverSlot = hover.container.GetSlotLink(hover.slot);
if (hoverSlot.container && holding.container.GetItem(holding.index) != null && uiInventory.CanMoveItem(holding.container, holding.index, hoverSlot.container, hoverSlot.index))
{
prevHoverSlot = hoverSlot;
hover.slot.Highlighted = true;
}
}
else if (hover.container && uiInventory.CanMoveItem(holding.container, holding.index, hover.container))
{
hover.container.Highlighted = true;
}
}
}
public void OnEndDrag(PointerEventData eventData)
{
// Stop any hovering
if (prevHover.slot)
{
prevHover.slot.Highlighted = false;
}
else if (prevHover.container)
{
prevHover.container.Highlighted = false;
}
holding.uiSlot.Transparent = false;
// Revert the dragging object
if (draggingSprite != null)
{
Destroy(draggingSprite);
draggingSprite = null;
}
prevHover = new UISlotRef();
prevHoverSlot = new SlotInfo();
// Now attempt the actual item movement
var destination = FindSlotAtPointer(eventData);
bool moveOccured = false;
if (destination.slot && destination.slot.enabled)
{
// Move from holding to destination
var destinationSlot = destination.container.GetSlotLink(destination.slot);
if (holding.container == destinationSlot.container && holding.index == destinationSlot.index)
{
moveOccured = true;
}
else if (uiInventory.CanMoveItem(holding.container, holding.index, destinationSlot.container, destinationSlot.index))
{
uiInventory.MoveItem(holding.container, holding.index, destinationSlot.container, destinationSlot.index);
moveOccured = true;
}
}
else if (destination.container)
{
if (uiInventory.FindHandler(holding.container) == destination.container)
{
moveOccured = true;
}
else if (uiInventory.CanMoveItem(holding.container, holding.index, destination.container))
{
uiInventory.MoveItem(holding.container, holding.index, destination.container);
moveOccured = true;
}
}
// If we could not move it to the intended place, move the item back to the original slot.
if (moveOccured == false && uiInventory.CanMoveItem(holding.container, holding.index, origin.container, origin.index))
{
uiInventory.MoveItem(holding.container, holding.index, origin.container, origin.index);
}
origin = new SlotInfo();
holding = new SlotInfo();
Destroy(this);
}
