public void DragEnd(PointerEventData data)
{
if (!dragging)
{
return;
}
dragging = false;
BuildingBarUI bar = GetComponentInParent <BuildingBarUI>();
// Work out the old index.
float oldX = oldPos.x;
int oldIndex = Mathf.RoundToInt((oldX - 5f) / 55f);
// Make sure that the index is in bounds.
oldIndex = Mathf.Clamp(oldIndex, 0, bar.Items.Count);
// Work out newly placed index...
float x = ((RectTransform)transform).anchoredPosition.x;
int index = Mathf.RoundToInt((x - 5f) / 55f);
// Make sure that the index is in bounds.
index = Mathf.Clamp(index, 0, bar.Items.Count);
if (index == oldIndex)
{
transform.position = oldPos;
return;
}
if (index > oldIndex)
{
// Update the bar.
index += 1;
index = Mathf.Clamp(index, 0, bar.Items.Count);
bar.Items.Insert(index, Player.Local.BuildingInventory.GetItem(Prefab));
bar.Items.RemoveAt(oldIndex);
bar.Refresh();
}
else
{
// Update the bar.
index = Mathf.Clamp(index, 0, bar.Items.Count);
bar.Items.Insert(index, Player.Local.BuildingInventory.GetItem(Prefab));
bar.Items.RemoveAt(oldIndex + 1);
bar.Refresh();
}
}
public void Drop(PointerEventData data)
{
string prefab = data.pointerDrag.GetComponent <BuildingMenuItem>().Prefab;
Vector2 localPos = data.position - (Vector2)((RectTransform)transform).position;
// Determine index from loca position...
// General formula for item x position is:
// x = 5 + 55 * index
// x - 5 = 55 * index
// (x - 5) / 55 = index
// index = (x - 5) / 55
// Algebra is actually useful, aparently.
float x = localPos.x;
int index = Mathf.RoundToInt((x - 5f) / 55f);
// Make sure that the index is in bounds.
index = Mathf.Clamp(index, 0, Bar.Items.Count);
Bar.Items.Insert(index, Player.Local.BuildingInventory.GetItem(prefab));
Bar.Refresh();
}