public override bool MouseButtonDown(GameTime gameTime, MouseButtonEventArgs e)
{
if (Game.Client.CurrentWindow == null)
{
return(false);
}
var Id = Game.Client.CurrentWindow.Id;
if (Id == -1)
{
Id = 0; // Minecraft is stupid
}
var item = ItemStack.EmptyStack;
if (SelectedSlot > -1)
{
item = Game.Client.CurrentWindow[SelectedSlot];
}
var packet = new ClickWindowPacket(Id, SelectedSlot, e.Button == MouseButton.Right,
0, Keyboard.GetState().IsKeyDown(Keys.LeftShift) || Keyboard.GetState().IsKeyDown(Keys.RightShift),
item.Id, item.Count, item.Metadata);
if (packet.SlotIndex == -999)
{
// Special case (throwing item) TODO
}
else
{
var backup = Game.Client.CurrentWindow.GetSlots();
var staging = (ItemStack)HeldItem.Clone();
Window.HandleClickPacket(packet, Game.Client.CurrentWindow, ref staging);
HeldItem = staging;
Game.Client.CurrentWindow.SetSlots(backup);
}
Game.Client.QueuePacket(packet);
return(true);
}
public static void HandleClickPacket(ClickWindowPacket packet, IWindow window, ref ItemStack itemStaging)
{
if (packet.SlotIndex >= window.Length || packet.SlotIndex < 0)
{
return;
}
var existing = window[packet.SlotIndex];
if (window.ReadOnlySlots.Contains(packet.SlotIndex))
{
if (itemStaging.Id == existing.Id || itemStaging.Empty)
{
if (itemStaging.Empty)
{
itemStaging = existing;
}
else
{
itemStaging.Count += existing.Count;
}
window[packet.SlotIndex] = ItemStack.EmptyStack;
}
return;
}
if (itemStaging.Empty) // Picking up something
{
if (packet.Shift)
{
window.MoveToAlternateArea(packet.SlotIndex);
}
else
{
if (packet.RightClick)
{
var mod = (sbyte)(existing.Count % 2);
existing.Count /= 2;
itemStaging = existing;
itemStaging.Count += mod;
window[packet.SlotIndex] = existing;
}
else
{
itemStaging = window[packet.SlotIndex];
window[packet.SlotIndex] = ItemStack.EmptyStack;
}
}
}
else // Setting something down
{
if (existing.Empty) // Replace empty slot
{
if (packet.RightClick)
{
var newItem = (ItemStack)itemStaging.Clone();
newItem.Count = 1;
itemStaging.Count--;
window[packet.SlotIndex] = newItem;
}
else
{
window[packet.SlotIndex] = itemStaging;
itemStaging = ItemStack.EmptyStack;
}
}
else
{
if (existing.CanMerge(itemStaging)) // Merge items
{
// TODO: Consider the maximum stack size
if (packet.RightClick)
{
existing.Count++;
itemStaging.Count--;
window[packet.SlotIndex] = existing;
}
else
{
existing.Count += itemStaging.Count;
window[packet.SlotIndex] = existing;
itemStaging = ItemStack.EmptyStack;
}
}
else // Swap items
{
window[packet.SlotIndex] = itemStaging;
itemStaging = existing;
}
}
}
}
