    001    package net.minecraft.tileentity;
    002
    003    import cpw.mods.fml.common.Side;
    004    import cpw.mods.fml.common.asm.SideOnly;
    005    import java.util.List;
    006    import net.minecraft.entity.player.EntityPlayer;
    007    import net.minecraft.inventory.IInventory;
    008    import net.minecraft.item.Item;
    009    import net.minecraft.item.ItemPotion;
    010    import net.minecraft.item.ItemStack;
    011    import net.minecraft.nbt.NBTTagCompound;
    012    import net.minecraft.nbt.NBTTagList;
    013    import net.minecraft.potion.PotionHelper;
    014
    015    import net.minecraftforge.common.ISidedInventory;
    016    import net.minecraftforge.common.ForgeDirection;
    017
    018    public class TileEntityBrewingStand extends TileEntity implements IInventory, ISidedInventory
    019    {
    020        /** The itemstacks currently placed in the slots of the brewing stand */
    021        private ItemStack[] brewingItemStacks = new ItemStack[4];
    022        private int brewTime;
    023
    024        /**
    025         * an integer with each bit specifying whether that slot of the stand contains a potion
    026         */
    027        private int filledSlots;
    028        private int ingredientID;
    029
    030        /**
    031         * Returns the name of the inventory.
    032         */
    033        public String getInvName()
    034        {
    035            return "container.brewing";
    036        }
    037
    038        /**
    039         * Returns the number of slots in the inventory.
    040         */
    041        public int getSizeInventory()
    042        {
    043            return this.brewingItemStacks.length;
    044        }
    045
    046        /**
    047         * Allows the entity to update its state. Overridden in most subclasses, e.g. the mob spawner uses this to count
    048         * ticks and creates a new spawn inside its implementation.
    049         */
    050        public void updateEntity()
    051        {
    052            if (this.brewTime > 0)
    053            {
    054                --this.brewTime;
    055
    056                if (this.brewTime == 0)
    057                {
    058                    this.brewPotions();
    059                    this.onInventoryChanged();
    060                }
    061                else if (!this.canBrew())
    062                {
    063                    this.brewTime = 0;
    064                    this.onInventoryChanged();
    065                }
    066                else if (this.ingredientID != this.brewingItemStacks[3].itemID)
    067                {
    068                    this.brewTime = 0;
    069                    this.onInventoryChanged();
    070                }
    071            }
    072            else if (this.canBrew())
    073            {
    074                this.brewTime = 400;
    075                this.ingredientID = this.brewingItemStacks[3].itemID;
    076            }
    077
    078            int var1 = this.getFilledSlots();
    079
    080            if (var1 != this.filledSlots)
    081            {
    082                this.filledSlots = var1;
    083                this.worldObj.setBlockMetadataWithNotify(this.xCoord, this.yCoord, this.zCoord, var1);
    084            }
    085
    086            super.updateEntity();
    087        }
    088
    089        public int getBrewTime()
    090        {
    091            return this.brewTime;
    092        }
    093
    094        private boolean canBrew()
    095        {
    096            if (this.brewingItemStacks[3] != null && this.brewingItemStacks[3].stackSize > 0)
    097            {
    098                ItemStack var1 = this.brewingItemStacks[3];
    099
    100                if (!Item.itemsList[var1.itemID].isPotionIngredient())
    101                {
    102                    return false;
    103                }
    104                else
    105                {
    106                    boolean var2 = false;
    107
    108                    for (int var3 = 0; var3 < 3; ++var3)
    109                    {
    110                        if (this.brewingItemStacks[var3] != null && this.brewingItemStacks[var3].itemID == Item.potion.shiftedIndex)
    111                        {
    112                            int var4 = this.brewingItemStacks[var3].getItemDamage();
    113                            int var5 = this.getPotionResult(var4, var1);
    114
    115                            if (!ItemPotion.isSplash(var4) && ItemPotion.isSplash(var5))
    116                            {
    117                                var2 = true;
    118                                break;
    119                            }
    120
    121                            List var6 = Item.potion.getEffects(var4);
    122                            List var7 = Item.potion.getEffects(var5);
    123
    124                            if ((var4 <= 0 || var6 != var7) && (var6 == null || !var6.equals(var7) && var7 != null) && var4 != var5)
    125                            {
    126                                var2 = true;
    127                                break;
    128                            }
    129                        }
    130                    }
    131
    132                    return var2;
    133                }
    134            }
    135            else
    136            {
    137                return false;
    138            }
    139        }
    140
    141        private void brewPotions()
    142        {
    143            if (this.canBrew())
    144            {
    145                ItemStack var1 = this.brewingItemStacks[3];
    146
    147                for (int var2 = 0; var2 < 3; ++var2)
    148                {
    149                    if (this.brewingItemStacks[var2] != null && this.brewingItemStacks[var2].itemID == Item.potion.shiftedIndex)
    150                    {
    151                        int var3 = this.brewingItemStacks[var2].getItemDamage();
    152                        int var4 = this.getPotionResult(var3, var1);
    153                        List var5 = Item.potion.getEffects(var3);
    154                        List var6 = Item.potion.getEffects(var4);
    155
    156                        if ((var3 <= 0 || var5 != var6) && (var5 == null || !var5.equals(var6) && var6 != null))
    157                        {
    158                            if (var3 != var4)
    159                            {
    160                                this.brewingItemStacks[var2].setItemDamage(var4);
    161                            }
    162                        }
    163                        else if (!ItemPotion.isSplash(var3) && ItemPotion.isSplash(var4))
    164                        {
    165                            this.brewingItemStacks[var2].setItemDamage(var4);
    166                        }
    167                    }
    168                }
    169
    170                if (Item.itemsList[var1.itemID].hasContainerItem())
    171                {
    172                    this.brewingItemStacks[3] = Item.itemsList[var1.itemID].getContainerItemStack(brewingItemStacks[3]);
    173                }
    174                else
    175                {
    176                    --this.brewingItemStacks[3].stackSize;
    177
    178                    if (this.brewingItemStacks[3].stackSize <= 0)
    179                    {
    180                        this.brewingItemStacks[3] = null;
    181                    }
    182                }
    183            }
    184        }
    185
    186        /**
    187         * The result of brewing a potion of the specified damage value with an ingredient itemstack.
    188         */
    189        private int getPotionResult(int par1, ItemStack par2ItemStack)
    190        {
    191            return par2ItemStack == null ? par1 : (Item.itemsList[par2ItemStack.itemID].isPotionIngredient() ? PotionHelper.applyIngredient(par1, Item.itemsList[par2ItemStack.itemID].getPotionEffect()) : par1);
    192        }
    193
    194        /**
    195         * Reads a tile entity from NBT.
    196         */
    197        public void readFromNBT(NBTTagCompound par1NBTTagCompound)
    198        {
    199            super.readFromNBT(par1NBTTagCompound);
    200            NBTTagList var2 = par1NBTTagCompound.getTagList("Items");
    201            this.brewingItemStacks = new ItemStack[this.getSizeInventory()];
    202
    203            for (int var3 = 0; var3 < var2.tagCount(); ++var3)
    204            {
    205                NBTTagCompound var4 = (NBTTagCompound)var2.tagAt(var3);
    206                byte var5 = var4.getByte("Slot");
    207
    208                if (var5 >= 0 && var5 < this.brewingItemStacks.length)
    209                {
    210                    this.brewingItemStacks[var5] = ItemStack.loadItemStackFromNBT(var4);
    211                }
    212            }
    213
    214            this.brewTime = par1NBTTagCompound.getShort("BrewTime");
    215        }
    216
    217        /**
    218         * Writes a tile entity to NBT.
    219         */
    220        public void writeToNBT(NBTTagCompound par1NBTTagCompound)
    221        {
    222            super.writeToNBT(par1NBTTagCompound);
    223            par1NBTTagCompound.setShort("BrewTime", (short)this.brewTime);
    224            NBTTagList var2 = new NBTTagList();
    225
    226            for (int var3 = 0; var3 < this.brewingItemStacks.length; ++var3)
    227            {
    228                if (this.brewingItemStacks[var3] != null)
    229                {
    230                    NBTTagCompound var4 = new NBTTagCompound();
    231                    var4.setByte("Slot", (byte)var3);
    232                    this.brewingItemStacks[var3].writeToNBT(var4);
    233                    var2.appendTag(var4);
    234                }
    235            }
    236
    237            par1NBTTagCompound.setTag("Items", var2);
    238        }
    239
    240        /**
    241         * Returns the stack in slot i
    242         */
    243        public ItemStack getStackInSlot(int par1)
    244        {
    245            return par1 >= 0 && par1 < this.brewingItemStacks.length ? this.brewingItemStacks[par1] : null;
    246        }
    247
    248        /**
    249         * Removes from an inventory slot (first arg) up to a specified number (second arg) of items and returns them in a
    250         * new stack.
    251         */
    252        public ItemStack decrStackSize(int par1, int par2)
    253        {
    254            if (par1 >= 0 && par1 < this.brewingItemStacks.length)
    255            {
    256                ItemStack var3 = this.brewingItemStacks[par1];
    257                this.brewingItemStacks[par1] = null;
    258                return var3;
    259            }
    260            else
    261            {
    262                return null;
    263            }
    264        }
    265
    266        /**
    267         * When some containers are closed they call this on each slot, then drop whatever it returns as an EntityItem -
    268         * like when you close a workbench GUI.
    269         */
    270        public ItemStack getStackInSlotOnClosing(int par1)
    271        {
    272            if (par1 >= 0 && par1 < this.brewingItemStacks.length)
    273            {
    274                ItemStack var2 = this.brewingItemStacks[par1];
    275                this.brewingItemStacks[par1] = null;
    276                return var2;
    277            }
    278            else
    279            {
    280                return null;
    281            }
    282        }
    283
    284        /**
    285         * Sets the given item stack to the specified slot in the inventory (can be crafting or armor sections).
    286         */
    287        public void setInventorySlotContents(int par1, ItemStack par2ItemStack)
    288        {
    289            if (par1 >= 0 && par1 < this.brewingItemStacks.length)
    290            {
    291                this.brewingItemStacks[par1] = par2ItemStack;
    292            }
    293        }
    294
    295        /**
    296         * Returns the maximum stack size for a inventory slot. Seems to always be 64, possibly will be extended. *Isn't
    297         * this more of a set than a get?*
    298         */
    299        public int getInventoryStackLimit()
    300        {
    301            return 1;
    302        }
    303
    304        /**
    305         * Do not make give this method the name canInteractWith because it clashes with Container
    306         */
    307        public boolean isUseableByPlayer(EntityPlayer par1EntityPlayer)
    308        {
    309            return this.worldObj.getBlockTileEntity(this.xCoord, this.yCoord, this.zCoord) != this ? false : par1EntityPlayer.getDistanceSq((double)this.xCoord + 0.5D, (double)this.yCoord + 0.5D, (double)this.zCoord + 0.5D) <= 64.0D;
    310        }
    311
    312        public void openChest() {}
    313
    314        public void closeChest() {}
    315
    316        @SideOnly(Side.CLIENT)
    317        public void setBrewTime(int par1)
    318        {
    319            this.brewTime = par1;
    320        }
    321
    322        /**
    323         * returns an integer with each bit specifying wether that slot of the stand contains a potion
    324         */
    325        public int getFilledSlots()
    326        {
    327            int var1 = 0;
    328
    329            for (int var2 = 0; var2 < 3; ++var2)
    330            {
    331                if (this.brewingItemStacks[var2] != null)
    332                {
    333                    var1 |= 1 << var2;
    334                }
    335            }
    336
    337            return var1;
    338        }
    339
    340        @Override
    341        public int getStartInventorySide(ForgeDirection side)
    342        {
    343            return (side == ForgeDirection.UP ? 3 : 0);
    344        }
    345
    346        @Override
    347        public int getSizeInventorySide(ForgeDirection side)
    348        {
    349            return (side == ForgeDirection.UP ? 1 : 3);
    350        }
    351    }