TileEntitySauceMaker

 package com.morefood.mod.tileentity;

import net.minecraft.block.Block;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.inventory.ISidedInventory;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.tileentity.TileEntity;

import com.morefood.mod.Morefood;
import com.morefood.mod.crafting.SauceMakerRecipes;
import com.morefood.mod.machines.SauceMaker;

import cpw.mods.fml.common.registry.GameRegistry;

public class TileEntitySauceMaker extends TileEntity implements ISidedInventory {

	private String localizedName;

	private static final int[] slots_top = new int[] {0};
	private static final int[] slots_bottom = new int[] {2, 1};
	private static final int[] slots_side = new int[] {1};

	private ItemStack[] slots = new ItemStack [4];

	//Progress bar speed, The higher the number, the slower it goes
	public int furnaceSpeed = 300;
    /**
     * The number of ticks that the furnace will keep burning
     */
	public int burnTime;
	/**
	 * 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 cookTime;

	public void setGuiDisplayName(String displayName) {
		this.localizedName = displayName;
	}

	public String getInventoryName() {
		return this.hasCustomInventoryName() ? this.localizedName : "container.superhotFurnace";
	}

	public boolean hasCustomInventoryName() {
		return this.localizedName != null && this.localizedName.length() > 0;
	}

	public int getSizeInventory() {
		return this.slots.length;
	}

	@Override
	public ItemStack getStackInSlot(int var1) {
		return this.slots[var1];
		}

	@Override
	public ItemStack decrStackSize(int var1, int var2) {
		if(this.slots[var1] != null) {
			ItemStack itemstack;

			if(this.slots[var1].stackSize <= var2) {
				itemstack = this.slots[var1];
				this.slots[var1] = null;
				return itemstack;
			}else{
				itemstack = this.slots[var1].splitStack(var2);

				if(this.slots[var1].stackSize == 0) {
					this.slots[var1] = null;
				}

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

	@Override
	public ItemStack getStackInSlotOnClosing(int i) {
		if(this.slots[i]!= null) {
			ItemStack itemstack = this.slots[i];
			this.slots[i] = null;
			return itemstack;
		}
		return null;
	}

	@Override
	public void setInventorySlotContents(int i, ItemStack itemstack) {
		this.slots[i] = itemstack;

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

	@Override
	//Choose which stack limit the furnace has
	public int getInventoryStackLimit() {
		return 64;
	}

	@Override
	public boolean isUseableByPlayer(EntityPlayer entityplayer) {
		return this.worldObj.getTileEntity(this.xCoord, this.yCoord, this.zCoord) != this ? false : entityplayer.getDistanceSq((double)this.xCoord + 0.5D, (double)this.yCoord + 0.5D, (double)this.zCoord + 0.5D) <= 64.0;
	}

	public void openInventory() {}
	public void closeInventory() {}

	@Override
	public boolean isItemValidForSlot(int i, ItemStack itemstack) {
		return i == 2 ? false : (i == 1 ? isItemFuel(itemstack) : true);
	}

	public static boolean isItemFuel (ItemStack itemstack) {
		return getItemBurnTime(itemstack ) > 0;
	}

	private static int getItemBurnTime(ItemStack itemstack) {
		if(itemstack == null) {
			return 0;
		}else{
			Item item = itemstack.getItem();

			if(item instanceof ItemBlock && Block.getBlockFromItem(item) != Blocks.air) {
				Block block = Block.getBlockFromItem(item);

				}
			//Fuel that can be used in this furnace, in unit "ticks"
				if(item == Morefood.foodRawMutton) return 1200;
			}
			return GameRegistry.getFuelValue(itemstack);
	}

	public boolean isBurning() {
		return this.burnTime > 0;
	}

	public void updateEntity() {
		boolean flag = this.burnTime > 0;
		boolean flag1 = false;

		if(this.isBurning()) {
			this.burnTime--;
		}
		if(!this.worldObj.isRemote) {
			if(this.burnTime == 0 && this.canJuice()) {
				this.currentItemBurnTime = this.burnTime = getItemBurnTime(this.slots[2]);

					if(this.slots[2] != null) {
						flag1 = true;

						this.slots[2].stackSize--;

						if(this.slots[2].stackSize == 0) {
							this.slots[2] = this.slots[2].getItem().getContainerItem(this.slots[2]);
					}
				}
			}
			if(this.isBurning() && this.canJuice()) {
			this.cookTime++;

			if(this.cookTime == this.furnaceSpeed) {
				this.cookTime = 0;
				this.juiceItem();
				flag1 = true;
				}
			}else{
				this.cookTime = 0;
			}

			if (flag != this.isBurning()) {
				flag1 = true;
				SauceMaker.updateSauceMakerBlockState(this.burnTime > 0, this.worldObj, this.xCoord, this.yCoord, this.zCoord);
			}
		}
		if(flag1) {
			this.markDirty();
		}
	}

	private boolean canJuice() {
		if (this.slots[0] == null || slots[1] == null) {
			return false;
		}
			ItemStack itemstack = SauceMakerRecipes.getJuicingResult(slots[0].getItem(), slots[1].getItem());

			if (itemstack == null) {
				return false;
			}
			if (this.slots[3] == null) {
				return true;
			}

			if(!slots[3].isItemEqual(itemstack)) {
				return false;
			}

			if(slots[3].stackSize < getInventoryStackLimit() && slots[3].stackSize < slots[3].getMaxStackSize()) {
				return true;
			}else{
				return slots[3].stackSize < itemstack.getMaxStackSize();
			}
		}

	private void juiceItem() {
		if (canJuice()) {
			ItemStack itemstack = SauceMakerRecipes.getJuicingResult(slots[0].getItem(), slots[1].getItem());

			if (slots[3] == null) {
				slots[3] = itemstack.copy();
			}else if (slots[3].isItemEqual(itemstack)) {
				slots[3].stackSize += itemstack.stackSize;
			}

			for (int i = 0; i < 2; i++) {
				if (slots[i].stackSize <= 0) {
					slots[i] = new ItemStack(slots[i].getItem().setFull3D());
				}else{
					slots[i].stackSize--;
				}

				if (slots[i].stackSize <= 0) {
					slots[i] = null;
				}
			}
		}
	}

	@Override
	public int[] getAccessibleSlotsFromSide(int var1) {
		return var1 == 0 ? slots_bottom : (var1 == 1 ? slots_top : slots_side);
	}

	@Override
	public boolean canInsertItem(int i, ItemStack itemstack, int j) {
		return this.isItemValidForSlot(i, itemstack);
	}

	@Override
	public boolean canExtractItem(int i, ItemStack itemstack, int j) {
		return j != 0 || i != 1 || itemstack.getItem() == Items.bucket;
	}

	public float getBurnTimeRemainingScaled(float i) {
		if(this.currentItemBurnTime == 0) {
			this.currentItemBurnTime = this.furnaceSpeed;
		}
		return this.burnTime * i / this.currentItemBurnTime;
	}

	public int getCookProgressScaled(int i) {
		return this.cookTime * i / this.furnaceSpeed;
	}

	public void readFromNBT(NBTTagCompound nbt) {
		super.readFromNBT(nbt);

		NBTTagList list = nbt.getTagList("Items", 10);
		this.slots = new ItemStack[this.getSizeInventory()];

		for (int i = 0; i < list.tagCount(); i++) {
			 NBTTagCompound compound = (NBTTagCompound) list.getCompoundTagAt(i);
			 byte b = compound.getByte("Slot");

			 if(b >= 0 && b < this.slots.length) {
				 this.slots[b] = ItemStack.loadItemStackFromNBT(compound);
			 }
		}

		this.burnTime = (int)nbt.getShort("BurnTime");
		this.cookTime = (int)nbt.getShort("CookTime");
		this.currentItemBurnTime = (int)nbt.getShort("CurrentBurnTime");

		if(nbt.hasKey("CustomName")) {
			this.localizedName = nbt.getString("CustomName");
		}
	}

	public void writeToNBT(NBTTagCompound nbt) {
		super.writeToNBT(nbt);

		nbt.setShort("BurnTime", (short)this.burnTime);
		nbt.setShort("CookTime", (short)this.cookTime);
		nbt.setShort("CurrentBurnTime", (short)this.currentItemBurnTime);

		NBTTagList list = new NBTTagList();

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

		nbt.setTag("Items", list);

		if (this.hasCustomInventoryName()) {
			nbt.setString("CustomName", this.localizedName);
		}
	}
}