/// <summary>
/// 移除某个位置一定数量的物体
/// </summary>
/// <param name="pos"></param>
/// <param name="count"></param>
/// <returns>移除的物体组</returns>
public ItemGroup RemoveItem(int pos, int count)
{
ItemGroup targetItemGroup = _itemGroups[pos];
ItemGroup removedItemGroup = new ItemGroup()
{
Item = targetItemGroup.Item
};
if (targetItemGroup.Count > count) // 有剩余
{
targetItemGroup.Count -= count;
removedItemGroup.Count = count;
}
else // 无剩余
{
removedItemGroup.Count = targetItemGroup.Count;
_itemGroups[pos] = null;
}
return(removedItemGroup);
}
/// <summary>
/// 移动物品组
/// </summary>
/// <param name="originalPos">原位置</param>
/// <param name="targetPos">目标位置</param>
public void MoveItemGroup(int originalPos, int targetPos)
{
if (originalPos == targetPos)
{
return;
}
// 要移动的物品组
ItemGroup originalItemGroup = _itemGroups[originalPos];
ItemGroup targetItemGroup = _itemGroups[targetPos];
if (originalItemGroup == null)
{
Debug.LogError("要移动的位置不存在物品");
return;
}
int maxStack = GameSetting.ItemMaxStack;
if (targetItemGroup != null && Item.IsCanStack(originalItemGroup.Item, targetItemGroup.Item)) // 目标位置有可以堆叠的物品
{
int space = maxStack - targetItemGroup.Count;
if (originalItemGroup.Count <= space) // 全部堆过去
{
targetItemGroup.Count += originalItemGroup.Count;
RemoveItemGroup(originalPos);
}
else // 只能堆一部份
{
targetItemGroup.Count += space;
originalItemGroup.Count -= space;
}
}
else
{
// 交换
_itemGroups[originalPos] = targetItemGroup;
_itemGroups[targetPos] = originalItemGroup;
}
}
/// <summary>
/// 添加物品到某个位置
/// <param name="index">位置</param>
/// <param name="item">物品</param>
/// <param name="count">数量</param>
/// <retures>剩余未添加的数量</retures>
/// </summary>
public int AddItem(int index, Item item, int count)
{
if (item == null)
{
Debug.LogError("要添加的物品为null");
}
ItemGroup itemGroup = _itemGroups[index];
if (itemGroup == null) // 目标位置没有物品
{
ItemGroup newItemGroup = new ItemGroup()
{
Item = item,
};
int addedCount;
if (item.Stack) // 可以堆叠
{
if (count <= GameSetting.ItemMaxStack)
{
addedCount = count;
}
else
{
addedCount = GameSetting.ItemMaxStack;
}
}
else // 不能堆叠
{
addedCount = 1;
}
newItemGroup.Count = addedCount;
_itemGroups[index] = newItemGroup;
return(count - addedCount);
}
else // 目标位置有物品
{
if (Item.IsCanStack(item, itemGroup.Item)) // 可以堆叠
{
int space = GameSetting.ItemMaxStack - itemGroup.Count;
if (count <= space) // 全部堆过去
{
itemGroup.Count += count;
return(0);
}
else // 只能堆一部份
{
itemGroup.Count += space;
return(count - space);
}
}
else
{
return(count);
}
}
}
/// <summary>
/// 添加物品组到某个位置
/// <param name="index">位置</param>
/// <param name="itemGroup">物品组</param>
/// <retures>剩余未添加的数量</retures>
/// </summary>
public int AddItemGroup(int index, ItemGroup itemGroup)
{
return(AddItem(index, itemGroup.Item, itemGroup.Count));
}
/// <summary>
/// 添加物品，从前往后（可以用另一种方式实现）
/// <param name="item">物品</param>
/// <param name="count">数量</param>
/// <retures>剩余未添加的数量</retures>
/// </summary>
public int AddItem(Item item, int count)
{
if (count == 0)
{
return(0);
}
int last = count;
int maxStack = GameSetting.ItemMaxStack;
//可以堆叠的物品组
ItemGroup itemGroup = FindItemGroup(v => Item.IsCanStack(v.Item, item) && v.Count < maxStack);
if (itemGroup == null) // 没有可以堆叠的地方
{
int emptyPos = FindFirstEmptyPos();
if (emptyPos == -1) // 没有空位置
{
return(last);
}
//新物品组
ItemGroup newItemGroup = new ItemGroup()
{
Item = item,
Count = 0
};
_itemGroups[emptyPos] = newItemGroup;
if (item.Stack)
{
if (last <= maxStack) // 可以放完
{
newItemGroup.Count = last;
}
else // 放不完，还要新格子
{
newItemGroup.Count = maxStack;
last -= maxStack;
return(AddItem(item, last));
}
}
else
{
newItemGroup.Count = 1;
last -= 1;
return(AddItem(item, last));
}
}
else // 有可以堆叠的地方
{
int space = maxStack - itemGroup.Count;
if (space >= last) // 可以堆下
{
itemGroup.Count += last;
last = 0;
}
else // 堆不下
{
itemGroup.Count += space;
last -= space;
// 还没放完
return(AddItem(item, last));
}
}
return(0);
}
