TileNetherrackFurnace.java

package qwertyasdef.alchemtrans.Tile;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.ISidedInventory;
import net.minecraft.inventory.ItemStackHelper;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.ITickable;
import net.minecraft.util.NonNullList;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.TextComponentString;
import net.minecraft.util.text.TextComponentTranslation;

public class TileNetherrackFurnace extends TileEntity implements ITickable, ISidedInventory {

    private String customName;

    private int cookTime;
    private int totalCookTime;
    private NonNullList<ItemStack> inventory = NonNullList.<ItemStack>withSize(2, ItemStack.EMPTY);

    private int[] SLOTS_UP = {0};
    private int[] SLOTS_DOWN = {1};
    private int[] SLOTS_SIDE = {0, 1};

    public TileNetherrackFurnace() {
    }

    public String getCustomName() {
        return this.customName;
    }

    public void setCustomName(String customName) {
        this.customName = customName;
    }

    @Override
    public String getName() {
        return this.hasCustomName() ? this.customName : "container.netherrack_furnace";
    }

    @Override
    public boolean hasCustomName() {
        return this.customName != null && !this.customName.equals("");
    }

    @Override
    public ITextComponent getDisplayName() {
        return this.hasCustomName() ? new TextComponentString(this.getName()) : new TextComponentTranslation(this.getName());
    }

    // IInventory
    @Override
    public int getSizeInventory() {
        return this.inventory.size();
    }

    @Override
    public boolean isEmpty() {
        for (int i = 0; i < getSizeInventory(); i++) {
            if (this.getStackInSlot(i) != ItemStack.EMPTY) {
                return false;
            }
        }
        return true;
    }

    @Override
    public ItemStack getStackInSlot(int index) {
        if (index < 0 || index >= this.getSizeInventory())
            return null;
        return this.inventory.get(index);
    }

    @Override
    public ItemStack decrStackSize(int index, int count) {
        if (this.getStackInSlot(index) != ItemStack.EMPTY) {
            ItemStack itemstack;

            if (this.getStackInSlot(index).getCount() <= count) {
                itemstack = this.getStackInSlot(index);
                this.setInventorySlotContents(index, ItemStack.EMPTY);
                this.markDirty();
                return itemstack;
            } else {
                itemstack = this.getStackInSlot(index).splitStack(count);

                if (this.getStackInSlot(index).getCount() <= 0) {
                    this.setInventorySlotContents(index, ItemStack.EMPTY);
                } else {
                    //Just to show that changes happened
                    this.setInventorySlotContents(index, this.getStackInSlot(index));
                }

                this.markDirty();
                return itemstack;
            }
        } else {
            return ItemStack.EMPTY;
        }
    }

    @Override
    public ItemStack removeStackFromSlot(int index) {
        ItemStack stack = this.getStackInSlot(index);
        this.setInventorySlotContents(index, ItemStack.EMPTY);
        return stack;
    }

    @Override
    public void setInventorySlotContents(int index, ItemStack stack) {
        if (index < 0 || index >= this.getSizeInventory()) {
            return;
        }

        if (stack != ItemStack.EMPTY && stack.getCount() > this.getInventoryStackLimit()) {
            stack.setCount(this.getInventoryStackLimit());
        }

        if (stack != ItemStack.EMPTY && stack.getCount() == 0) {
            stack = ItemStack.EMPTY;
        }

        this.inventory.set(index, stack);
        this.markDirty();
    }

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

    @Override
    public boolean isUsableByPlayer(EntityPlayer player) {
        return this.getWorld().getTileEntity(this.getPos()) == this && player.getDistanceSq(this.pos.add(0.5, 0.5, 0.5)) <= 64;
    }

    @Override
    public void openInventory(EntityPlayer player) {
    }

    @Override
    public void closeInventory(EntityPlayer player) {
    }

    @Override
    public boolean isItemValidForSlot(int index, ItemStack stack) {
        return index == 0;
    }

    @Override
    public int getField(int id) {
        switch (id) {
            case 0:
                return this.cookTime;
            case 1:
                return this.totalCookTime;
            default:
                return 0;
        }
    }

    @Override
    public void setField(int id, int value) {
        switch (id) {
            case 0:
                this.cookTime = value;
                break;
            case 1:
                this.totalCookTime = value;
                break;
        }
    }

    @Override
    public int getFieldCount() {
        return 2;
    }

    @Override
    public void clear() {
        for (int i = 0; i < this.getSizeInventory(); i++) {
            this.setInventorySlotContents(i, ItemStack.EMPTY);
        }
    }

    // ISidedInventory
    @Override
    public int[] getSlotsForFace(EnumFacing side) {
        switch (side) {
            case UP:
                return SLOTS_UP;
            case DOWN:
                return SLOTS_DOWN;
            default:
                return SLOTS_SIDE;
        }
    }

    @Override
    public boolean canInsertItem(int index, ItemStack itemIn, EnumFacing side) {
        return this.isItemValidForSlot(index, itemIn);
    }

    @Override
    public boolean canExtractItem(int index, ItemStack itemIn, EnumFacing side) {
        return true;
    }

    // ITickable
    @Override
    public void update() {
        ItemStack input = this.getStackInSlot(0);
        if (canSmelt()) {
            if (this.totalCookTime == 0) {
                this.totalCookTime = getCookTime(input);
            }

            ++this.cookTime;
            System.out.println("Cooking: cookTime = " + this.cookTime);

            if (this.cookTime >= this.totalCookTime) {
                smeltItem();
                input = this.getStackInSlot(0);
                System.out.println("Smelted item!");

                if (input != ItemStack.EMPTY) {
                    this.totalCookTime = getCookTime(input);
                } else {
                    this.totalCookTime = 0;
                }
                this.cookTime = 0;
            }
        } else {
            this.cookTime = 0;
        }
    }

    public int getCookTime(ItemStack stack) {
        return 160;
    }

    private boolean canSmelt() {
        ItemStack input = this.getStackInSlot(0);
        ItemStack result = input.copy();
        ItemStack output = this.getStackInSlot(1);

        if (input.isEmpty()) {
            return false;
        }

        if (result.isEmpty()) {
            return false;
        }

        if (result.getItem() == output.getItem() && result.getCount() + output.getCount() <= this.getInventoryStackLimit()) {
            return true;
        }

        return false;
    }

    public void smeltItem() {
        if (this.canSmelt()) {
            ItemStack input = this.getStackInSlot(0);
            ItemStack result = input.copy();
            ItemStack output = this.getStackInSlot(1);

            input.shrink(1);
            if (input.getCount() <= 0) {
                this.setInventorySlotContents(0, ItemStack.EMPTY);
            }

            if (output.isEmpty()) {
                this.setInventorySlotContents(1, result.copy());
            } else {
                output.grow(result.getCount());
            }
        }
    }

    // TileEntity
    @Override
    public NBTTagCompound writeToNBT(NBTTagCompound compound) {
        super.writeToNBT(compound);

        if (this.hasCustomName()) {
            compound.setString("CustomName", this.getCustomName());
        }

        compound.setInteger("CookTime", this.cookTime);
        compound.setInteger("TotalCookTime", this.totalCookTime);

        ItemStackHelper.saveAllItems(compound, this.inventory);

        return compound;
    }

    @Override
    public void readFromNBT(NBTTagCompound compound) {
        super.readFromNBT(compound);

        if (compound.hasKey("CustomName", 8)) {
            this.setCustomName(compound.getString("CustomName"));
        }

        this.cookTime = compound.getInteger("CookTime");
        this.totalCookTime = compound.getInteger("TotalCookTime");

        ItemStackHelper.loadAllItems(compound, this.inventory);

    }
}