using System.Collections; using System.Collections.Generic; using System.Threading.Tasks; using ColdMint.scripts.map.events; namespace ColdMint.scripts.inventory; public abstract class ItemContainerDisplayTemplate : IItemContainerDisplay { protected readonly List ItemDisplayList = []; private IItemContainer? _itemContainer; public async void BindItemContainer(IItemContainer? itemContainer) { if (_itemContainer == itemContainer) { return; } if (_itemContainer != null) { _itemContainer.SelectedItemChangeEvent -= OnSelectedItemChangeEvent; _itemContainer.ItemDataChangeEvent -= OnItemDataChangeEvent; } _itemContainer = itemContainer; if (itemContainer == null) { //Set empty items container to hide all ui. //设置空物品容器,隐藏全部ui。 foreach (var itemDisplay in ItemDisplayList) { itemDisplay.Update(null); itemDisplay.HideSelf(); } return; } itemContainer.SelectedItemChangeEvent += OnSelectedItemChangeEvent; itemContainer.ItemDataChangeEvent += OnItemDataChangeEvent; var totalCapacity = itemContainer.GetTotalCapacity(); var currentCapacity = ItemDisplayList.Count; var capacityDifference = totalCapacity - currentCapacity; var adjustedEndIndex = totalCapacity; if (capacityDifference > 0) { //There are those that need to be added, and we create them. //有需要添加的,我们创建他们。 for (var i = 0; i < capacityDifference; i++) { AddItemDisplay(); } } else if (capacityDifference < 0) { //There are things that need to be hidden //有需要被隐藏的 adjustedEndIndex += capacityDifference; var loopEndIndex = currentCapacity + capacityDifference; for (var i = currentCapacity - 1; i >= loopEndIndex; i--) { var itemDisplay = ItemDisplayList[i]; itemDisplay.Update(null); itemDisplay.HideSelf(); } } await Task.Yield(); UpdateData(itemContainer, adjustedEndIndex); } private void OnItemDataChangeEvent(ItemDataChangeEvent itemDataChangeEvent) { if (_itemContainer == null) { return; } UpdateDataForSingleLocation(_itemContainer, itemDataChangeEvent.NewIndex); } private void OnSelectedItemChangeEvent(SelectedItemChangeEvent selectedItemChangeEvent) { if (_itemContainer == null) { return; } UpdateDataForSingleLocation(_itemContainer, selectedItemChangeEvent.OldIndex); UpdateDataForSingleLocation(_itemContainer, selectedItemChangeEvent.NewIndex); } /// /// Update data /// 更新数据 /// /// ///Used to batch update the Item data in itemContainer to the display. ///用于将itemContainer内的Item数据批量更新到显示器内。 /// /// ///Item container data ///物品容器数据 /// /// ///endIndex ///结束位置 /// /// ///startIndex ///起始位置 /// private void UpdateData(IItemContainer itemContainer, int endIndex, int startIndex = 0) { for (var i = startIndex; i < endIndex; i++) { UpdateDataForSingleLocation(itemContainer, i); } } /// /// Update data for a single location /// 更新单个位置的数据 /// /// /// private void UpdateDataForSingleLocation(IItemContainer itemContainer, int index) { var itemDisplay = ItemDisplayList[index]; var item = itemContainer.GetItem(index); if (item == null) { item = itemContainer.GetPlaceHolderItem(index); } if (itemContainer.SupportSelect) { item.IsSelect = index == itemContainer.GetSelectIndex(); } else { item.IsSelect = false; } itemDisplay.Update(item); itemDisplay.ShowSelf(); } /// /// Add item display /// 添加物品显示器 /// protected abstract void AddItemDisplay(); public IEnumerator GetEnumerator() { return ItemDisplayList.GetEnumerator(); } IEnumerator IEnumerable.GetEnumerator() { return GetEnumerator(); } }