void Update()
{
//if this building is not current building in building placer then turn this building to grey
if (BuildingPlacer.GetInstance().getCurrentBuilding() != this.transform)
{
MarkGrey();
}
}
public void OnPointerExit(PointerEventData eventData)
{
//handle on pinter exit event
if (BuildingPlacer.GetInstance().currentSelectedPanelItem != null && BuildingPlacer.GetInstance().hasPlaced)
{
BuildingPlacer.GetInstance().currentSelectedPanelItem.RemoveBuilding(); //remove a building from currently selected scroll panel item
BuildingPlacer.GetInstance().currentSelectedPanelItem = null;
BuildingPlacer.GetInstance().pointerInScrollBar = false;
}
}
void Update()
{
UpdateList();
UpdateVisibleButtonCount();
//if buttons exceed the screen or pointer is not inside scroll bar then stop scrolling
if ((visibleButtonCount - 1) * buttonDistance < (rightBoundary.anchoredPosition.x - leftBoundary.anchoredPosition.x) ||
!BuildingPlacer.GetInstance().pointerInScrollBar)
{
scrollable = false;
}
else
{
scrollable = true;
}
if (scrollable)
{
scrollPanel.parent.GetComponent <ScrollRect>().horizontal = true;
if (!dragging)
{
//if not dragging, lerp the scroll bar to appropriate position based on the boundaries
//if scroll bar dragged such that first scroll bar item crossed left boundary then lerp it back
if (scrollPanelItems[0].transform.position.x > leftBoundary.transform.position.x)
{
scrollPanel.GetComponent <RectTransform>().anchoredPosition = new Vector2(Mathf.Lerp(scrollPanel.GetComponent <RectTransform>().anchoredPosition.x, leftBoundary.GetComponent <RectTransform>().anchoredPosition.x, Time.deltaTime * 10f), scrollPanel.GetComponent <RectTransform>().anchoredPosition.y);
}
//if scroll bar dragged such that last visible scroll bar item crossed right boundary then lerp it forward
if (scrollPanelItems[visibleButtonCount - 1].transform.position.x < rightBoundary.transform.position.x)
{
scrollPanel.GetComponent <RectTransform>().anchoredPosition = new Vector2(Mathf.Lerp(scrollPanel.GetComponent <RectTransform>().anchoredPosition.x, rightBoundary.GetComponent <RectTransform>().anchoredPosition.x - buttonDistance * (visibleButtonCount - 1), Time.deltaTime * 10f), scrollPanel.GetComponent <RectTransform>().anchoredPosition.y);
}
}
}
else
{
scrollPanel.parent.GetComponent <ScrollRect>().horizontal = false;
if (scrollPanelItems.Count != 0)
{
//if not scrollable and still scroll panel items visible then lerp scroll bar such that first scroll panel item is at start of scroll panel
if (scrollPanelItems[0].transform.position.x > leftBoundary.transform.position.x)
{
scrollPanel.GetComponent <RectTransform>().anchoredPosition = new Vector2(Mathf.Lerp(scrollPanel.GetComponent <RectTransform>().anchoredPosition.x, leftBoundary.GetComponent <RectTransform>().anchoredPosition.x, Time.deltaTime * 7f), scrollPanel.GetComponent <RectTransform>().anchoredPosition.y);
}
if (scrollPanelItems[0].transform.position.x < leftBoundary.transform.position.x)
{
scrollPanel.GetComponent <RectTransform>().anchoredPosition = new Vector2(Mathf.Lerp(scrollPanel.GetComponent <RectTransform>().anchoredPosition.x, leftBoundary.GetComponent <RectTransform>().anchoredPosition.x, Time.deltaTime * 7f), scrollPanel.GetComponent <RectTransform>().anchoredPosition.y);
}
}
}
}
public void OnPointerDown(PointerEventData eventData)
{
//handle pointer down event on scroll panel item
BuildingPlacer.GetInstance().currentSelectedPanelItem = this;
}
public void RemoveBuilding()
{
buildingCount--;
//remove building from scroll panel item but add to BuildigPlacer
BuildingPlacer.GetInstance().SetCurrentBuilding(buildingPrefab, gameObject);
}
public void OnPointerEnter(PointerEventData eventData)
{
BuildingPlacer.GetInstance().pointerInScrollBar = true;
}