    001    package net.minecraft.inventory;
    002
    003    import cpw.mods.fml.common.Side;
    004    import cpw.mods.fml.common.asm.SideOnly;
    005    import net.minecraft.entity.IMerchant;
    006    import net.minecraft.entity.player.EntityPlayer;
    007    import net.minecraft.entity.player.InventoryPlayer;
    008    import net.minecraft.item.ItemStack;
    009    import net.minecraft.world.World;
    010
    011    public class ContainerMerchant extends Container
    012    {
    013        /** Instance of Merchant. */
    014        private IMerchant theMerchant;
    015        private InventoryMerchant merchantInventory;
    016
    017        /** Instance of World. */
    018        private final World theWorld;
    019
    020        public ContainerMerchant(InventoryPlayer par1InventoryPlayer, IMerchant par2IMerchant, World par3World)
    021        {
    022            this.theMerchant = par2IMerchant;
    023            this.theWorld = par3World;
    024            this.merchantInventory = new InventoryMerchant(par1InventoryPlayer.player, par2IMerchant);
    025            this.addSlotToContainer(new Slot(this.merchantInventory, 0, 36, 53));
    026            this.addSlotToContainer(new Slot(this.merchantInventory, 1, 62, 53));
    027            this.addSlotToContainer(new SlotMerchantResult(par1InventoryPlayer.player, par2IMerchant, this.merchantInventory, 2, 120, 53));
    028            int var4;
    029
    030            for (var4 = 0; var4 < 3; ++var4)
    031            {
    032                for (int var5 = 0; var5 < 9; ++var5)
    033                {
    034                    this.addSlotToContainer(new Slot(par1InventoryPlayer, var5 + var4 * 9 + 9, 8 + var5 * 18, 84 + var4 * 18));
    035                }
    036            }
    037
    038            for (var4 = 0; var4 < 9; ++var4)
    039            {
    040                this.addSlotToContainer(new Slot(par1InventoryPlayer, var4, 8 + var4 * 18, 142));
    041            }
    042        }
    043
    044        public InventoryMerchant getMerchantInventory()
    045        {
    046            return this.merchantInventory;
    047        }
    048
    049        public void addCraftingToCrafters(ICrafting par1ICrafting)
    050        {
    051            super.addCraftingToCrafters(par1ICrafting);
    052        }
    053
    054        /**
    055         * Updates crafting matrix; called from onCraftMatrixChanged. Args: none
    056         */
    057        public void updateCraftingResults()
    058        {
    059            super.updateCraftingResults();
    060        }
    061
    062        /**
    063         * Callback for when the crafting matrix is changed.
    064         */
    065        public void onCraftMatrixChanged(IInventory par1IInventory)
    066        {
    067            this.merchantInventory.resetRecipeAndSlots();
    068            super.onCraftMatrixChanged(par1IInventory);
    069        }
    070
    071        public void setCurrentRecipeIndex(int par1)
    072        {
    073            this.merchantInventory.setCurrentRecipeIndex(par1);
    074        }
    075
    076        @SideOnly(Side.CLIENT)
    077        public void updateProgressBar(int par1, int par2) {}
    078
    079        public boolean canInteractWith(EntityPlayer par1EntityPlayer)
    080        {
    081            return this.theMerchant.getCustomer() == par1EntityPlayer;
    082        }
    083
    084        /**
    085         * Called when a player shift-clicks on a slot. You must override this or you will crash when someone does that.
    086         */
    087        public ItemStack transferStackInSlot(EntityPlayer par1EntityPlayer, int par2)
    088        {
    089            ItemStack var3 = null;
    090            Slot var4 = (Slot)this.inventorySlots.get(par2);
    091
    092            if (var4 != null && var4.getHasStack())
    093            {
    094                ItemStack var5 = var4.getStack();
    095                var3 = var5.copy();
    096
    097                if (par2 == 2)
    098                {
    099                    if (!this.mergeItemStack(var5, 3, 39, true))
    100                    {
    101                        return null;
    102                    }
    103
    104                    var4.onSlotChange(var5, var3);
    105                }
    106                else if (par2 != 0 && par2 != 1)
    107                {
    108                    if (par2 >= 3 && par2 < 30)
    109                    {
    110                        if (!this.mergeItemStack(var5, 30, 39, false))
    111                        {
    112                            return null;
    113                        }
    114                    }
    115                    else if (par2 >= 30 && par2 < 39 && !this.mergeItemStack(var5, 3, 30, false))
    116                    {
    117                        return null;
    118                    }
    119                }
    120                else if (!this.mergeItemStack(var5, 3, 39, false))
    121                {
    122                    return null;
    123                }
    124
    125                if (var5.stackSize == 0)
    126                {
    127                    var4.putStack((ItemStack)null);
    128                }
    129                else
    130                {
    131                    var4.onSlotChanged();
    132                }
    133
    134                if (var5.stackSize == var3.stackSize)
    135                {
    136                    return null;
    137                }
    138
    139                var4.onPickupFromSlot(par1EntityPlayer, var5);
    140            }
    141
    142            return var3;
    143        }
    144
    145        /**
    146         * Callback for when the crafting gui is closed.
    147         */
    148        public void onCraftGuiClosed(EntityPlayer par1EntityPlayer)
    149        {
    150            super.onCraftGuiClosed(par1EntityPlayer);
    151            this.theMerchant.setCustomer((EntityPlayer)null);
    152            super.onCraftGuiClosed(par1EntityPlayer);
    153
    154            if (!this.theWorld.isRemote)
    155            {
    156                ItemStack var2 = this.merchantInventory.getStackInSlotOnClosing(0);
    157
    158                if (var2 != null)
    159                {
    160                    par1EntityPlayer.dropPlayerItem(var2);
    161                }
    162
    163                var2 = this.merchantInventory.getStackInSlotOnClosing(1);
    164
    165                if (var2 != null)
    166                {
    167                    par1EntityPlayer.dropPlayerItem(var2);
    168                }
    169            }
    170        }
    171    }