HexianOresTileEntity.java

package com.HexianMods.HexianOres.tileentity;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.ChatComponentTranslation;
import net.minecraft.util.IChatComponent;

public class HexianOresTileEntity extends TileEntity implements IInventory{

    private ItemStack[] inventory;

    private String customName;

    public HexianOresTileEntity(){
        this.inventory = new ItemStack[this.getSizeInventory()];
    }

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

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

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

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

    @Override
    public IChatComponent getDisplayName(){
        return this.hasCustomName() ? new ChatComponentText(this.getName()) : new ChatComponentTranslation(this.getName());
    }

    @Override
    public int getSizeInventory(){
        return 3;
    }

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

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

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

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

                this.markDirty();
                return itemstack;
            }
        } else {
            return null;
        }
    }

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

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

        if (stack != null && stack.stackSize > this.getInventoryStackLimit())
            stack.stackSize = this.getInventoryStackLimit();

        if (stack != null && stack.stackSize == 0)
            stack = null;

        this.inventory[index] = stack;
        this.markDirty();
    }

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

    @Override
    public boolean isUseableByPlayer(EntityPlayer player) {
        return this.worldObj.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 true;
    }

    @Override
    public int getField(int id) {
        return 0;
    }

    @Override
    public void setField(int id, int value) {
    }

    @Override
    public int getFieldCount() {
        return 0;
    }

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

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

        NBTTagList list = new NBTTagList();
        for (int i = 0; i < this.getSizeInventory(); ++i) {
            if (this.getStackInSlot(i) != null) {
                NBTTagCompound stackTag = new NBTTagCompound();
                stackTag.setByte("Slot", (byte) i);
                this.getStackInSlot(i).writeToNBT(stackTag);
                list.appendTag(stackTag);
            }
        }
        compound.setTag("Items", list);

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

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

        NBTTagList list = nbt.getTagList("Items", 10);
        for (int i = 0; i < list.tagCount(); ++i) {
            NBTTagCompound stackTag = list.getCompoundTagAt(i);
            int slot = stackTag.getByte("Slot") & 255;
            this.setInventorySlotContents(slot, ItemStack.loadItemStackFromNBT(stackTag));
        }

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