//surface本质上传过来的是UICamera.hoveredObject，也就是图片下面的是那个ui物体
protected override void OnDragDropRelease(GameObject surface)
{
base.OnDragDropRelease(surface);
bool isCleanChildren = false;
//拖放到空格子
if (surface.tag == Tags.inventoryItemGrid)
{
//拖放到非自身的空格子
if (surface != transform.parent.gameObject)
{
InventoryItem hideItem = surface.GetComponentInChildren <InventoryItem>();
InventoryItemGrid oldGrid = transform.parent.GetComponent <InventoryItemGrid>();
InventoryItemGrid newGrid = surface.GetComponent <InventoryItemGrid>();
//判断这个空格子是真的没有物体，还是有一个隐藏的InventoryItem
if (hideItem == null)
{
//必须把设置放在SetId之前,SetId会获取子组件
transform.parent = surface.transform;
newGrid.SetId(oldGrid.id, oldGrid.itemNum);
oldGrid.CleanInfo();
}
else
{
hideItem.GetComponent <UISprite>().enabled = true;
newGrid.SetId(oldGrid.id, oldGrid.itemNum);
oldGrid.CleanInfoInChildren();
isCleanChildren = true;
}
}
}
//拖放到有物品的格子，两个格子信息交换
else if (surface.tag == Tags.inventoryItem)
{
InventoryItemGrid originalGrid = transform.parent.GetComponent <InventoryItemGrid>();
InventoryItemGrid targetGrid = surface.transform.parent.GetComponent <InventoryItemGrid>();
string id = targetGrid.id;
int num = targetGrid.itemNum;
targetGrid.SetId(originalGrid.id, originalGrid.itemNum);
originalGrid.SetId(id, num);
}
//拖放到快捷栏
else if (surface.tag == Tags.shortCut)
{
surface.GetComponent <ShortCutGrid>().SetInventoryItem(m_id);
}
ResetItemPosition();
//因为如果清空格子的子物体代表会执行隐藏操作，这里把它显示有不合理
if (isCleanChildren == false)
{
transform.parent.GetComponentInChildren <UILabel>().enabled = true;
}
sprite.depth = originalDepth;
}