マイクラのコードのこういうとこが許せない的な

Container.java

protected Slot addSlotToContainer(Slot par1Slot)
{
    par1Slot.slotNumber = this.inventorySlots.size();
    this.inventorySlots.add(par1Slot); // ！？
    this.inventoryItemStacks.add((Object)null);
    return par1Slot;
}

public Slot getSlot(int par1)
{
	/*
	 * 見た目同じ場所のスロットを取り出す時にチェストとかまどでスロット番号が違う！死ね！
	 */
    return (Slot)this.inventorySlots.get(par1);
}
    

ContainerFurnace.java

this.addSlotToContainer(new Slot(par2TileEntityFurnace, 0, 56, 17));
this.addSlotToContainer(new Slot(par2TileEntityFurnace, 1, 56, 53));
this.addSlotToContainer(new SlotFurnace(par1InventoryPlayer.player, par2TileEntityFurnace, 2, 116, 35));
int i;

for (i = 0; i < 3; ++i)
{
    for (int j = 0; j < 9; ++j)
    {
        this.addSlotToContainer(new Slot(par1InventoryPlayer, j + i * 9 + 9, 8 + j * 18, 84 + i * 18));
    }
}

ContainerWorkbench.java

for (l = 0; l < 3; ++l)
{
    for (i1 = 0; i1 < 3; ++i1)
    {
        this.addSlotToContainer(new Slot(this.craftMatrix, i1 + l * 3, 30 + i1 * 18, 17 + l * 18));
    }
}

for (l = 0; l < 3; ++l)
{
    for (i1 = 0; i1 < 9; ++i1)
    {
        this.addSlotToContainer(new Slot(par1InventoryPlayer, i1 + l * 9 + 9, 8 + i1 * 18, 84 + l * 18));
    }
}