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