EntityIceCreamMaker

package com.chef.mod.tileentity;

import com.chef.mod.Chef;
import com.chef.mod.Debugger;
import com.chef.mod.crafting.IceCreamMakerRecipes;
import com.chef.mod.machines.IceCreamMaker;

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

public class TileEntityIceCreamMaker extends TileEntity implements ISidedInventory {

	private ItemStack slots[];

	public int dualPower;
	public int dualCookTime;
	public static final int maxPower = 10000;
	public static final int iceCreamMakerSpeed = 100;

	public void Debugger() {
		Debugger.log(maxPower);
	}

	private static final int[] slots_top = new int[] {0, 1};
	private static final int[] slots_bottom = new int[] {3};
	private static final int[] slots_side = new int[] {2};

	private String customName;

	public TileEntityIceCreamMaker() {
		slots = new ItemStack[4];
	}

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

	@Override
	public ItemStack getStackInSlot(int i) {
		return slots[i];
	}

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

	@Override
	public void setInventorySlotContents(int i, ItemStack itemstack) {
		slots[i] = itemstack;
		if (itemstack != null && itemstack.stackSize > getInventoryStackLimit()) {
			itemstack.stackSize = getInventoryStackLimit();
		}
	}

	@Override
	public int[] getAccessibleSlotsFromSide(int i) {
		if (i == 0) {
			return slots_bottom;
		} else if (i == 1) {
			return slots_top;
		} else {
			return slots_side;
		}
	}




	@Override
	public int getInventoryStackLimit() {
		return 64;
	}

	@Override
	public boolean isUseableByPlayer(EntityPlayer player) {
		if (worldObj.getTileEntity(xCoord, yCoord, zCoord) != this) {
			return false;
		}else{
			return player.getDistanceSq((double)xCoord + 0.5D, (double)yCoord + 0.5D, (double)zCoord + 0.5D) <= 64;
		}
	}

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

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

	public boolean hasItemPower(ItemStack itemstack) {
		return getItemPower(itemstack) > 0;
	}

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

			if (item == Chef.fuelIceShard) return 50;

			return 0;
		}
	}

	public ItemStack decrStackSize(int i, int j) {
		if (slots[i] != null) {
			if (slots[i].stackSize <= j) {
				ItemStack itemstack = slots[i];
				slots[i] = null;
				return itemstack;
			}

			ItemStack itemstack1 = slots[i].splitStack(j);

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

			return itemstack1;
		}else{
			return null;
		}
	}

	public void readFromNBT (NBTTagCompound nbt) {
		super.readFromNBT(nbt);
		NBTTagList list = nbt.getTagList("Items", 10);
		slots = new ItemStack[getSizeInventory()];

		for (int i = 0; i < list.tagCount(); i++) {
			NBTTagCompound nbt1 = (NBTTagCompound)list.getCompoundTagAt(i);
			byte b0 = nbt1.getByte("Slot");

			if (b0 >= 0 && b0 < slots.length) {
				slots[b0] = ItemStack.loadItemStackFromNBT(nbt1);
			}
		}

		dualPower = nbt.getShort("PowerTime");
		dualCookTime = nbt.getShort("CookTime");
	}

	public void writeToNBT(NBTTagCompound nbt) {
		super.writeToNBT(nbt);
		nbt.setShort("PowerTime", (short)dualPower);
		nbt.setShort("CookTime", (short)dualCookTime);
		NBTTagList list = new NBTTagList();

		for (int i = 0; i < slots.length; i++) {
			if (slots[i] != null) {
				NBTTagCompound nbt1 = new NBTTagCompound();
				nbt1.setByte("Slot", (byte)i);
				slots[i].writeToNBT(nbt1);
				list.appendTag(nbt1);
			}
		}

		nbt.setTag("Items", list);
	}


	@Override
	public String getInventoryName() {
		return "container.iceCreamMaker";
	}

	@Override
	public boolean canInsertItem(int var1, ItemStack itemstack, int var3) {
		return this.isItemValidForSlot(var1, itemstack);
	}

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

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

	public int getIceMakerProgressScaled(int i) {
		return (dualCookTime * i) / this.iceCreamMakerSpeed;
	}

	public int getPowerRemainingScaled(int i) {
		return (dualPower * i) / maxPower;
	}

	private boolean canIce() {

		if (slots[0] == null || slots[1] == null) {
			return false;
		} else {

		ItemStack itemstack = IceCreamMakerRecipes.getIceCreamResult(slots[0].getItem(), slots[1].getItem());

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

		int result = this.slots[3].stackSize + itemstack.stackSize;

		return (result <= getInventoryStackLimit() && result <= itemstack.getMaxStackSize());
		}
	}

	private void iceItem() {
		if (canIce()) {
			ItemStack itemstack = IceCreamMakerRecipes.getIceCreamResult(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;
				}
			}
		}
	}

	public boolean hasPower() {
		return dualPower > 0;
	}

	public boolean isIcing() {
		return this.dualCookTime > 0;
	}

	public void updateEntity() {
		boolean flag = this.hasPower();
		boolean flag1 = false;

		if(hasPower() && this.isIcing()) {
			this.dualPower--;
		}

		if(!worldObj.isRemote) {
			if (this.hasItemPower(this.slots[2]) && this.dualPower < (this.maxPower - this.getItemPower(this.slots[2]))) {
				this.dualPower += getItemPower(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 (hasPower() && canIce()) {
				dualCookTime++;

				if (this.dualCookTime == this.iceCreamMakerSpeed) {
					this.dualCookTime = 0;
					this.iceItem();
					flag1 = true;
				}
			} else {
				dualCookTime = 0;
			}
			if (flag != this.isIcing()) {
				flag1 = true;
				IceCreamMaker.updateBlockState(this.hasPower(), this.worldObj, this.xCoord, this.yCoord, this.zCoord);
			}
		}

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

}