public virtual void ItemLeft(GameObject item)
{
// release the item from this object's hierarchy
item.transform.SetParent(JohnnyUITools.GetMyCanvas(gameObject).transform);
currentItem = null;
}
/// <summary>
/// find mouse position under the gameobject's canvas
/// </summary>
/// <param name="gameObject"></param>
/// <returns>Vector2: mouse position</returns>
public static Vector2 GetMousePosInMyCanvas(GameObject gameObject)
{
// find the canvas I'm currently under
Canvas myCanvas = JohnnyUITools.GetMyCanvas(gameObject);
// calculate mouse's position using this canvas' coordinates (anchor = lower left corner)
float mousePosX = Input.mousePosition.x;
float mousePosY = Input.mousePosition.y;
float canvasWidth = myCanvas.GetComponent <RectTransform>().sizeDelta.x;
float canvasHeight = myCanvas.GetComponent <RectTransform>().sizeDelta.y;
float mousePosInCanvasX = mousePosX / Screen.width * canvasWidth;
float mousePosInCanvasY = mousePosY / Screen.height * canvasHeight;
return(new Vector2(mousePosInCanvasX, mousePosInCanvasY));
}
public virtual bool InTriggerRange(GameObject item)
{
// get item position (center line)
Vector2 center = JohnnyUITools.GetCenterCanvasCoord(item);
// compare item position with header
Vector2 headerCenter = JohnnyUITools.GetCenterCanvasCoord(myHeader);
Vector2 headerTop = JohnnyUITools.GetTopCanvasCoord(myHeader);
if (center.y > headerCenter.y && center.y <= headerTop.y)
{
return(false);
}
else
{
return(true);
}
}
// system messages //////////////////////////////////////////////////////////////////////
public virtual void LateUpdate()
{
if (hoveringSlot && hoveringSlot.GetComponent <IDroppable>().IsOccupied())
{
hoveringSlot = null;
}
// if there's an item hoverring above this panel
if (guardProbed /*&& !myItems.Contains(DragDropManager.instance.currentlyDraggedItem)*/)
{
// skip if panel is full already
if (!PanelHasEnoughSpace())
{
// TODO: fill in the alarming behavior here
Debug.Log("panel full!");
guardProbed = false;
return;
}
// if there's an item currently being dragged
if (DragDropManager.instance.currentlyDraggedItem)
{
// in case of empty
if (mySlots.Count == 0)
{
hoveringSlot = FormatNewSlot(0);
}
else
{
bool matched = false;
bool above = false;
// position check
foreach (GameObject slot in mySlots)
{
GameObject slotItem = slot.GetComponent <IDroppable>().GetCurrentItem();
Vector2 slotBottom = JohnnyUITools.GetCanvasCoord(slot);
Vector2 slotTop = JohnnyUITools.GetCanvasCoord(slot) + slot.GetComponent <RectTransform>().sizeDelta;
Vector2 itemBottom = JohnnyUITools.GetCanvasCoord(DragDropManager.instance.currentlyDraggedItem);
Vector2 itemCenter = JohnnyUITools.GetCenterCanvasCoord(DragDropManager.instance.currentlyDraggedItem);
// move or create hovering slot here
if (slotBottom.y <= itemCenter.y && slotTop.y >= itemCenter.y)
{
matched = true;
if (slot == hoveringSlot)
{
break;
}
// TODO: Check also if the center of current block is in some range of the subpanel
else if (slot.GetComponent <IDroppable>().GetCurrentItem().GetComponent <ISubPanel>() != null &&
slot.GetComponent <IDroppable>().GetCurrentItem().GetComponent <ISubPanel>().InTriggerRange(DragDropManager.instance.currentlyDraggedItem))
{
// clear hovering slot
if (hoveringSlot)
{
RemoveSlot(hoveringSlot);
hoveringSlot = null;
}
// forward the call
ISubPanel subPanel = slot.GetComponent <IDroppable>().GetCurrentItem().GetComponent <ISubPanel>();
subPanel.IsOccupied();
// update subpanel reference
lastSubPanel = slot.GetComponent <IDroppable>().GetCurrentItem();
break;
}
// create new hover slot
if (!hoveringSlot)
{
hoveringSlot = FormatNewSlot(mySlots.IndexOf(slot));
}
// rearrange slots
else
{
int newIndex;
// above current slot
if (itemCenter.y - slotBottom.y < slotTop.y - itemCenter.y)
{
newIndex = (mySlots.IndexOf(hoveringSlot) < mySlots.IndexOf(slot)) ?
mySlots.IndexOf(slot) : mySlots.IndexOf(slot) + 1;
}
// below current slot
else
{
newIndex = (mySlots.IndexOf(hoveringSlot) > mySlots.IndexOf(slot)) ?
mySlots.IndexOf(slot) : mySlots.IndexOf(slot) - 1;
}
ReorderSlot(newIndex, hoveringSlot);
}
break;
}
else if (slotBottom.y < itemBottom.y)
{
above = true;
}
}
if (!matched && above)
{
if (hoveringSlot)
{
ReorderSlot(0, hoveringSlot);
}
else
{
hoveringSlot = FormatNewSlot(0);
}
}
else if (!matched)
{
// move hover slot to bottom
if (hoveringSlot)
{
ReorderSlot(mySlots.Count - 1, hoveringSlot);
}
else
{
hoveringSlot = FormatNewSlot(mySlots.Count);
}
}
}
}
}
else if (hoveringSlot)
{
RemoveSlot(hoveringSlot);
hoveringSlot = null;
}
guardProbed = false;
}
