TileEntityNaturalisFurnace

package nekpek.mod.Naturalis.blocks;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.ISidedInventory;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.FurnaceRecipes;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.tileentity.TileEntity;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class TileEntityNaturalisFurnace extends TileEntity implements ISidedInventory
    {
        private static final int[] slots_top = new int[] { 0, 1 };
        private static final int[] slots_bottom = new int[] { 0, 1 };
        private static final int[] slots_sides = new int[] { 2 };

        /**
         * The ItemStacks that hold the items currently being used in the
         * furnace
         */
        private ItemStack[] furnaceItemStacks = new ItemStack[3];

        /** The number of ticks that the furnace will keep burning */
        public int furnaceBurnTime;

        /**
         * The number of ticks that a fresh copy of the currently-burning item
         * would keep the furnace burning for
         */
        public int currentItemBurnTime;

        /** The number of ticks that the current item has been cooking for */
        public int furnaceCookTime;
        private String field_94130_e;

        /**
         * Returns the number of slots in the inventory.
         */
        @Override
        public int getSizeInventory()
            {
                return this.furnaceItemStacks.length;
            }

        /**
         * Returns the stack in slot i
         */
        @Override
        public ItemStack getStackInSlot(int par1)
            {
                return this.furnaceItemStacks[par1];
            }

        /**
         * Removes from an inventory slot (first arg) up to a specified number
         * (second arg) of items and returns them in a new stack.
         */
        @Override
        public ItemStack decrStackSize(int par1, int par2)
            {
                if (this.furnaceItemStacks[par1] != null)
                    {
                        ItemStack itemstack;

                        if (this.furnaceItemStacks[par1].stackSize <= par2)
                            {
                                itemstack = this.furnaceItemStacks[par1];
                                this.furnaceItemStacks[par1] = null;
                                return itemstack;
                            }
                        else
                            {
                                itemstack = this.furnaceItemStacks[par1].splitStack(par2);

                                if (this.furnaceItemStacks[par1].stackSize == 0)
                                    {
                                        this.furnaceItemStacks[par1] = null;
                                    }

                                return itemstack;
                            }
                    }
                else
                    {
                        return null;
                    }
            }

        /**
         * When some containers are closed they call this on each slot, then
         * drop whatever it returns as an EntityItem - like when you close a
         * workbench GUI.
         */
        @Override
        public ItemStack getStackInSlotOnClosing(int par1)
            {
                if (this.furnaceItemStacks[par1] != null)
                    {
                        ItemStack itemstack = this.furnaceItemStacks[par1];
                        this.furnaceItemStacks[par1] = null;
                        return itemstack;
                    }
                else
                    {
                        return null;
                    }
            }

        /**
         * Sets the given item stack to the specified slot in the inventory (can
         * be crafting or armor sections).
         */
        @Override
        public void setInventorySlotContents(int par1, ItemStack par2ItemStack)
            {
                this.furnaceItemStacks[par1] = par2ItemStack;

                if (par2ItemStack != null && par2ItemStack.stackSize > this.getInventoryStackLimit())
                    {
                        par2ItemStack.stackSize = this.getInventoryStackLimit();
                    }
            }

        /**
         * Returns the name of the inventory.
         */
        @Override
        public String getInvName()
            {
                return this.isInvNameLocalized() ? this.field_94130_e : "Powered Furnace";
            }

        /**
         * If this returns false, the inventory name will be used as an
         * unlocalized name, and translated into the player's language.
         * Otherwise it will be used directly.
         */
        @Override
        public boolean isInvNameLocalized()
            {
                return this.field_94130_e != null && this.field_94130_e.length() > 0;
            }

        /**
         * Sets the custom display name to use when opening a GUI linked to this
         * tile entity.
         */
        public void setGuiDisplayName(String par1Str)
            {
                this.field_94130_e = par1Str;
            }

        /**
         * Reads a tile entity from NBT.
         */
        @Override
        public void readFromNBT(NBTTagCompound par1NBTTagCompound)
            {
                super.readFromNBT(par1NBTTagCompound);
                NBTTagList nbttaglist = par1NBTTagCompound.getTagList("Items");
                this.furnaceItemStacks = new ItemStack[this.getSizeInventory()];

                for (int i = 0; i < nbttaglist.tagCount(); ++i)
                    {
                        NBTTagCompound nbttagcompound1 = (NBTTagCompound) nbttaglist.tagAt(i);
                        byte b0 = nbttagcompound1.getByte("Slot");

                        if (b0 >= 0 && b0 < this.furnaceItemStacks.length)
                            {
                                this.furnaceItemStacks[b0] = ItemStack.loadItemStackFromNBT(nbttagcompound1);
                            }
                    }

                this.furnaceBurnTime = par1NBTTagCompound.getShort("BurnTime");
                this.furnaceCookTime = par1NBTTagCompound.getShort("CookTime");
                // this.currentItemBurnTime =
                // getItemBurnTime(this.furnaceItemStacks[1]);

                if (par1NBTTagCompound.hasKey("Powered Furnace"))
                    {
                        this.field_94130_e = par1NBTTagCompound.getString("Powered Furnace");
                    }
            }

        /**
         * Writes a tile entity to NBT.
         */
        @Override
        public void writeToNBT(NBTTagCompound par1NBTTagCompound)
            {
                super.writeToNBT(par1NBTTagCompound);
                par1NBTTagCompound.setShort("BurnTime", (short) this.furnaceBurnTime);
                par1NBTTagCompound.setShort("CookTime", (short) this.furnaceCookTime);
                NBTTagList nbttaglist = new NBTTagList();

                for (int i = 0; i < this.furnaceItemStacks.length; ++i)
                    {
                        if (this.furnaceItemStacks[i] != null)
                            {
                                NBTTagCompound nbttagcompound1 = new NBTTagCompound();
                                nbttagcompound1.setByte("Slot", (byte) i);
                                this.furnaceItemStacks[i].writeToNBT(nbttagcompound1);
                                nbttaglist.appendTag(nbttagcompound1);
                            }
                    }

                par1NBTTagCompound.setTag("Items", nbttaglist);

                if (this.isInvNameLocalized())
                    {
                        par1NBTTagCompound.setString("Powered Furnace", this.field_94130_e);
                    }
            }

        /**
         * Returns the maximum stack size for a inventory slot. Seems to always
         * be 64, possibly will be extended. *Isn't this more of a set than a
         * get?*
         */
        @Override
        public int getInventoryStackLimit()
            {
                return 64;
            }

        @SideOnly(Side.CLIENT)
        /**
         * Returns an integer between 0 and the passed value representing how close the current item is to being completely
         * cooked
         */
        public int getCookProgressScaled(int par1)
            {
                return this.furnaceCookTime * par1 / 100;
            }

        @SideOnly(Side.CLIENT)
        /**
         * Returns an integer between 0 and the passed value representing how much burn time is left on the current fuel
         * item, where 0 means that the item is exhausted and the passed value means that the item is fresh
         */
        public int getBurnTimeRemainingScaled(int par1)
            {
                if (this.currentItemBurnTime == 0)
                    {
                        this.currentItemBurnTime = 100;
                    }

                return this.furnaceBurnTime * par1 / this.currentItemBurnTime;
            }

        /**
         * Returns true if the furnace is currently burning
         */
        public boolean isBurning()
            {
                return this.furnaceBurnTime > 0;
            }

        /**
         * Allows the entity to update its state. Overridden in most subclasses,
         * e.g. the mob spawner uses this to count ticks and creates a new spawn
         * inside its implementation.
         */
        @Override
        public void updateEntity()
            {
                boolean flag = this.furnaceBurnTime > 0;
                boolean flag1 = false;

                if (this.furnaceBurnTime > 0)
                    {
                        --this.furnaceBurnTime;
                    }

                if (!this.worldObj.isRemote)
                    {
                        if (this.canSmelt())

                            if (this.isBurning() && this.canSmelt())
                                {
                                    ++this.furnaceCookTime;

                                    if (this.furnaceCookTime == 100)
                                        {
                                            this.furnaceCookTime = 0;
                                            this.smeltItem();
                                            flag1 = true;
                                        }
                                }
                            else
                                {
                                    this.furnaceCookTime = 0;
                                }

                        if (flag != this.furnaceBurnTime > 0)
                            {
                                flag1 = true;
                                BlockNaturalisPowerFurnace.updateFurnaceBlockState(this.furnaceBurnTime > 0, this.worldObj, this.xCoord, this.yCoord, this.zCoord);
                            }
                    }

                if (flag1)
                    {
                        this.onInventoryChanged();
                    }
            }

        /**
         * Returns true if the furnace can smelt an item, i.e. has a source
         * item, destination stack isn't full, etc.
         */
        private boolean canSmelt()
            {
                if (this.furnaceItemStacks[0] == null && this.furnaceItemStacks[1] == null)
                    {
                        return false;
                    }
                else
                    {
                        ItemStack itemstack = FurnaceRecipes.smelting().getSmeltingResult(this.furnaceItemStacks[0]);
                        ItemStack itemstack2 = FurnaceRecipes.smelting().getSmeltingResult(this.furnaceItemStacks[1]);
                        if (itemstack == null && itemstack2 == null)
                            return false;
                        if (this.furnaceItemStacks[2] == null)
                            return true;
                        if (!this.furnaceItemStacks[2].isItemEqual(itemstack) && !this.furnaceItemStacks[2].isItemEqual(itemstack2))
                            return false;
                        int result = furnaceItemStacks[2].stackSize + itemstack.stackSize;
                        int result2 = furnaceItemStacks[2].stackSize + itemstack2.stackSize;
                        return (result <= getInventoryStackLimit() && result <= itemstack.getMaxStackSize() && result2 <= getInventoryStackLimit() && result2 <= itemstack2.getMaxStackSize());
                    }
            }

        /**
         * Turn one item from the furnace source stack into the appropriate
         * smelted item in the furnace result stack
         */
        public void smeltItem()
            {
                if (this.canSmelt())
                    {
                        ItemStack itemstack = FurnaceRecipes.smelting().getSmeltingResult(this.furnaceItemStacks[0]);

                        if (this.furnaceItemStacks[2] == null)
                            {
                                this.furnaceItemStacks[2] = itemstack.copy();
                            }
                        else
                            if (this.furnaceItemStacks[2].isItemEqual(itemstack))
                                {
                                    furnaceItemStacks[2].stackSize += itemstack.stackSize;
                                }

                        --this.furnaceItemStacks[0].stackSize;

                        if (this.furnaceItemStacks[0].stackSize <= 0)
                            {
                                this.furnaceItemStacks[0] = null;
                            }
                    }
                if (this.canSmelt())
                    {
                        ItemStack itemstack = FurnaceRecipes.smelting().getSmeltingResult(this.furnaceItemStacks[1]);

                        if (this.furnaceItemStacks[2] == null)
                            {
                                this.furnaceItemStacks[2] = itemstack.copy();
                            }
                        else
                            if (this.furnaceItemStacks[2].isItemEqual(itemstack))
                                {
                                    furnaceItemStacks[2].stackSize += itemstack.stackSize;
                                }

                        --this.furnaceItemStacks[1].stackSize;

                        if (this.furnaceItemStacks[1].stackSize <= 0)
                            {
                                this.furnaceItemStacks[1] = null;
                            }
                    }
            }

        /**
         * Returns the number of ticks that the supplied fuel item will keep the
         * furnace burning, or 0 if the item isn't fuel
         */
        public static int getItemBurnTime(ItemStack par0ItemStack)
            {

                return 100;
            }

        /**
         * Return true if item is a fuel source (getItemBurnTime() > 0).
         */
        public static boolean isItemFuel(ItemStack par0ItemStack)
            {
                return getItemBurnTime(par0ItemStack) > 0;
            }

        /**
         * Do not make give this method the name canInteractWith because it
         * clashes with Container
         */
        @Override
        public boolean isUseableByPlayer(EntityPlayer par1EntityPlayer)
            {
                return this.worldObj.getBlockTileEntity(this.xCoord, this.yCoord, this.zCoord) != this ? false : par1EntityPlayer.getDistanceSq(this.xCoord + 0.5D, this.yCoord + 0.5D, this.zCoord + 0.5D) <= 64.0D;
            }

        @Override
        public void openChest()
            {
            }

        @Override
        public void closeChest()
            {
            }

        /**
         * Returns true if automation is allowed to insert the given stack
         * (ignoring stack size) into the given slot.
         */
        @Override
        public boolean isItemValidForSlot(int par1, ItemStack par2ItemStack)
            {
                return par1 == 2 ? false : (par1 == 1 ? isItemFuel(par2ItemStack) : true);
            }

        /**
         * Returns an array containing the indices of the slots that can be
         * accessed by automation on the given side of this block.
         */
        @Override
        public int[] getAccessibleSlotsFromSide(int par1)
            {
                return par1 == 0 ? slots_bottom : (par1 == 1 ? slots_top : slots_sides);
            }

        /**
         * Returns true if automation can insert the given item in the given
         * slot from the given side. Args: Slot, item, side
         */
        @Override
        public boolean canInsertItem(int par1, ItemStack par2ItemStack, int par3)
            {
                return this.isItemValidForSlot(par1, par2ItemStack);
            }

        /**
         * Returns true if automation can extract the given item in the given
         * slot from the given side. Args: Slot, item, side
         */
        @Override
        public boolean canExtractItem(int par1, ItemStack par2ItemStack, int par3)
            {
                return par3 != 0 || par1 != 1 || par2ItemStack.itemID == Item.bucketEmpty.itemID;
            }
    }