protected internal virtual int MoveOrMergeItem(int index, Slot slot, WindowArea from)
{
int emptyIndex = -1;
for (int i = 0; i < Length; i++)
{
if (this[i].Empty && emptyIndex == -1)
emptyIndex = i;
else if (this[i].Id == slot.Id &&
this[i].Metadata == slot.Metadata &&
this[i].Count < slot.Item.MaximumStack)
{
// Merging takes precedence over empty slots
emptyIndex = -1;
if (from != null)
from[index] = new Slot();
if (this[i].Count + slot.Count > slot.Item.MaximumStack)
{
slot.Count -= (byte)(slot.Item.MaximumStack - this[i].Count);
this[i].Count = slot.Item.MaximumStack;
continue;
}
this[i] = new Slot(slot.Id, (byte)(this[i].Count + slot.Count));
return i;
}
}
if (emptyIndex != -1)
{
if (from != null)
from[index] = new Slot();
this[emptyIndex] = slot;
}
return emptyIndex;
}
public EntityEquipmentPacket(int entityId, EntityEquipmentSlot slot, Slot item)
{
EntityId = entityId;
SlotIndex = (short)slot;
Item = item;
if (slot == 0 && item.Id != 0xFFFF)
item.Id = 0xFFFF;
}
public Slot[] GetSlots()
{
int length = WindowAreas.Sum(area => area.Length);
var slots = new Slot[length];
foreach (var windowArea in WindowAreas)
Array.Copy(windowArea.Items, 0, slots, windowArea.StartIndex, windowArea.Length);
return slots;
}
public WindowArea(int startIndex, int length)
{
StartIndex = startIndex;
Length = length;
Items = new Slot[Length];
for (int i = 0; i < Items.Length; i++)
Items[i] = new Slot();
}
public SetSlotPacket(byte windowId, short index, Slot slot)
{
WindowId = windowId;
Index = index;
Slot = slot;
}
public SetWindowItemsPacket(byte windowId, Slot[] slots)
{
WindowId = windowId;
Slots = slots;
}
/// <summary>
/// Returns true if the specified slot is valid to
/// be placed in this index.
/// </summary>
protected virtual bool IsValid(Slot slot, int index)
{
return true;
}
public EntityEquipmentPacket(int entityId, EntityEquipmentSlot slot, Slot item)
{
EntityId = entityId;
SlotIndex = (short)slot;
Item = item;
}
public static bool TryReadSlot(byte[] buffer, ref int offset, out Slot slot)
{
slot = new Slot();
if (!DataUtility.TryReadUInt16(buffer, ref offset, out slot.id))
return false;
if (slot.Id == 0xFFFF)
return true;
if (!DataUtility.TryReadByte(buffer, ref offset, out slot.count))
return false;
if (!DataUtility.TryReadUInt16(buffer, ref offset, out slot.metadata))
return false;
short length = 0;
if (!DataUtility.TryReadInt16(buffer, ref offset, out length))
return false;
if (length == -1)
return true;
byte[] compressed;
if (!DataUtility.TryReadArray(buffer, length, ref offset, out compressed))
return false;
if (length != -1)
{
var output = new MemoryStream();
var gzs = new GZipStream(new MemoryStream(compressed), CompressionMode.Decompress, false);
gzs.CopyTo(output);
gzs.Close();
slot.Nbt = new NbtFile();
slot.Nbt.LoadFile(output, false);
}
return true;
}
/// <summary>
/// Reads a slot from the given stream.
/// </summary>
/// <param name="stream">The stream to read from.</param>
/// <returns></returns>
/// <remarks></remarks>
public static Slot ReadSlot(Stream stream)
{
var s = new Slot();
s.Id = ReadUShort(stream);
if (s.Id == 0xFFFF)
return s;
s.Count = (byte)stream.ReadByte();
s.Metadata = ReadUShort(stream);
short length = ReadShort(stream);
if (length != -1)
{
var compressed = new byte[length];
stream.Read(compressed, 0, length);
var output = new MemoryStream();
var gzs = new GZipStream(new MemoryStream(compressed), CompressionMode.Decompress, false);
gzs.CopyTo(output);
gzs.Close();
s.Nbt = new NbtFile();
s.Nbt.LoadFile(output, false);
}
return s;
}
public static Slot FromNbt(NbtCompound compound)
{
var s = new Slot();
s.Id = (ushort)compound.Get<NbtShort>("id").Value;
s.Metadata = (ushort)compound.Get<NbtShort>("Damage").Value;
s.Count = compound.Get<NbtByte>("Count").Value;
s.Index = compound.Get<NbtByte>("Slot").Value;
if (compound.Get<NbtCompound>("tag") != null)
{
s.Nbt = new NbtFile();
s.Nbt.RootTag = compound.Get<NbtCompound>("tag");
}
return s;
}
public static Slot FromNbt(NbtCompound compound)
{
var s = new Slot();
s.Id = (ushort)compound.Get<NbtShort>("id").Value;
s.Metadata = (ushort)compound.Get<NbtShort>("Damage").Value;
s.Count = compound.Get<NbtByte>("Count").Value;
s.Index = compound.Get<NbtByte>("Slot").Value;
return s;
}
/// <summary> /// When shift-clicking items between areas, this method is used /// to determine which area links to which. /// </summary> /// <param name="index">The index of the area the item is coming from</param> /// <param name="slot">The item being moved</param> /// <returns>The area to place the item into</returns> protected abstract WindowArea GetLinkedArea(int index, Slot slot);
public virtual bool GetDrop(ToolItem tool, out Slot[] drop)
{
drop = new[] { new Slot(this.Id, 1, this.Metadata) };
return CanHarvest(tool);
}
