Grinder With GUI, not Furnace

***********
MardiffBase
***********
@Mod (modid = "mardiffMod2", name = "Mardiff's Mod version 0.0.3", version = "0.0.3")

@NetworkMod(clientSideRequired = true, serverSideRequired = true, clientPacketHandlerSpec = @SidedPacketHandler(channels = {"mardiffMod"}, packetHandler = net.minecraft.mardiff.SSPPacketHandler.class),
serverPacketHandlerSpec = @SidedPacketHandler(channels = {"mardiffMod"}, packetHandler = net.minecraft.mardiff.SMPPacketHandler.class))

public class MardiffBase {
    @Instance("mardiffMod")
        public static MardiffBase instance;

    //Gui Blocks
    public static final Block grinder = new Grinder(3078);

    @Init
    public void load(FMLInitializationEvent event)
    {
        //Gui Blocks
        GameRegistry.registerBlock(grinder);
        LanguageRegistry.addName(grinder, "Grinder");
            GameRegistry.registerTileEntity(TileEntityGrinder.class, "containerGrinder");
            NetworkRegistry.instance().registerGuiHandler(this, new GuiHandler());
    }
}

*******
Grinder
*******
package net.minecraft.mardiff;

import java.util.Random;

import net.minecraft.block.BlockContainer;
import net.minecraft.block.material.Material;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;

public class Grinder extends BlockContainer {

        protected Grinder (int id) {
                super(id, Material.rock);
                setHardness(4.0F);
                setResistance(5.0F);
                setBlockName("grinder");
                setCreativeTab(MardiffBase.MardiffTab);
        }

        @Override
        public boolean onBlockActivated(World world, int x, int y, int z,
                        EntityPlayer player, int idk, float what, float these, float are) {
                TileEntity tileEntity = world.getBlockTileEntity(x, y, z);
                if (tileEntity == null || player.isSneaking()) {
                        return false;
                }
        //code to open gui explained later
        player.openGui(MardiffBase.instance, 0, world, x, y, z);
                return true;
        }

        @Override
        public void breakBlock(World world, int x, int y, int z, int par5, int par6) {
                dropItems(world, x, y, z);
                super.breakBlock(world, x, y, z, par5, par6);
        }

        private void dropItems(World world, int x, int y, int z){
                Random rand = new Random();

                TileEntity tileEntity = world.getBlockTileEntity(x, y, z);
                if (!(tileEntity instanceof IInventory)) {
                        return;
                }
                IInventory inventory = (IInventory) tileEntity;

                for (int i = 0; i < inventory.getSizeInventory(); i++) {
                        ItemStack item = inventory.getStackInSlot(i);

                        if (item != null && item.stackSize > 0) {
                                float rx = rand.nextFloat() * 0.8F + 0.1F;
                                float ry = rand.nextFloat() * 0.8F + 0.1F;
                                float rz = rand.nextFloat() * 0.8F + 0.1F;

                                EntityItem entityItem = new EntityItem(world,
                                                x + rx, y + ry, z + rz,
                                                new ItemStack(item.itemID, item.stackSize, item.getItemDamage()));

                                if (item.hasTagCompound()) {
                                        entityItem.func_92014_d().setTagCompound((NBTTagCompound) item.getTagCompound().copy());
                                }

                                float factor = 0.05F;
                                entityItem.motionX = rand.nextGaussian() * factor;
                                entityItem.motionY = rand.nextGaussian() * factor + 0.2F;
                                entityItem.motionZ = rand.nextGaussian() * factor;
                                world.spawnEntityInWorld(entityItem);
                                item.stackSize = 0;
                        }
                }
        }

        @Override
        public TileEntity createNewTileEntity(World world) {
                return new TileEntityGrinder();
        }

}

*****************
TileEntityGrinder
*****************
package net.minecraft.mardiff;

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;

public class TileEntityGrinder extends TileEntity implements IInventory {

        private ItemStack[] inv;

        public TileEntityGrinder(){
                inv = new ItemStack[9];
        }

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

        @Override
        public ItemStack getStackInSlot(int slot) {
                return inv[slot];
        }

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

        @Override
        public ItemStack decrStackSize(int slot, int amt) {
                ItemStack stack = getStackInSlot(slot);
                if (stack != null) {
                        if (stack.stackSize <= amt) {
                                setInventorySlotContents(slot, null);
                        } else {
                                stack = stack.splitStack(amt);
                                if (stack.stackSize == 0) {
                                        setInventorySlotContents(slot, null);
                                }
                        }
                }
                return stack;
        }

        @Override
        public ItemStack getStackInSlotOnClosing(int slot) {
                ItemStack stack = getStackInSlot(slot);
                if (stack != null) {
                        setInventorySlotContents(slot, null);
                }
                return stack;
        }

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

        @Override
        public boolean isUseableByPlayer(EntityPlayer player) {
                return worldObj.getBlockTileEntity(xCoord, yCoord, zCoord) == this &&
                player.getDistanceSq(xCoord + 0.5, yCoord + 0.5, zCoord + 0.5) < 64;
        }

        @Override
        public void openChest() {}

        @Override
        public void closeChest() {}

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

                NBTTagList tagList = tagCompound.getTagList("Inventory");
                for (int i = 0; i < tagList.tagCount(); i++) {
                        NBTTagCompound tag = (NBTTagCompound) tagList.tagAt(i);
                        byte slot = tag.getByte("Slot");
                        if (slot >= 0 && slot < inv.length) {
                                inv[slot] = ItemStack.loadItemStackFromNBT(tag);
                        }
                }
        }

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

                NBTTagList itemList = new NBTTagList();
                for (int i = 0; i < inv.length; i++) {
                        ItemStack stack = inv[i];
                        if (stack != null) {
                                NBTTagCompound tag = new NBTTagCompound();
                                tag.setByte("Slot", (byte) i);
                                stack.writeToNBT(tag);
                                itemList.appendTag(tag);
                        }
                }
                tagCompound.setTag("Inventory", itemList);
        }

                @Override
                public String getInvName() {
                        return "net.minecraft.mardiff.grinder";
                }
}

****************
ContainerGrinder
****************
package net.minecraft.mardiff;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;

public class ContainerGrinder extends Container {

        protected TileEntityGrinder tileEntity;

        public ContainerGrinder (InventoryPlayer inventoryPlayer, TileEntityGrinder te){
                tileEntity = te;

                //the Slot constructor takes the IInventory and the slot number in that it binds to
                //and the x-y coordinates it resides on-screen
                addSlotToContainer(new Slot(tileEntity, 0, 56, 35));
                addSlotToContainer(new Slot(tileEntity, 1, 116, 35));

                //commonly used vanilla code that adds the player's inventory
                bindPlayerInventory(inventoryPlayer);
        }

        @Override
        public boolean canInteractWith(EntityPlayer player) {
                return tileEntity.isUseableByPlayer(player);
        }


        protected void bindPlayerInventory(InventoryPlayer inventoryPlayer) {
                for (int i = 0; i < 3; i++) {
                        for (int j = 0; j < 9; j++) {
                                addSlotToContainer(new Slot(inventoryPlayer, j + i * 9 + 9,
                                                8 + j * 18, 84 + i * 18));
                        }
                }

                for (int i = 0; i < 9; i++) {
                        addSlotToContainer(new Slot(inventoryPlayer, i, 8 + i * 18, 142));
                }
        }

        @Override
        public ItemStack transferStackInSlot(EntityPlayer player, int slot) {
                ItemStack stack = null;
                Slot slotObject = (Slot) inventorySlots.get(slot);

                //null checks and checks if the item can be stacked (maxStackSize > 1)
                if (slotObject != null && slotObject.getHasStack()) {
                        ItemStack stackInSlot = slotObject.getStack();
                        stack = stackInSlot.copy();

                        //merges the item into player inventory since its in the tileEntity
                        if (slot < 9) {
                                if (!this.mergeItemStack(stackInSlot, 9, 45, true)) {
                                        return null;
                                }
                        }
                        //places it into the tileEntity is possible since its in the player inventory
                        else if (!this.mergeItemStack(stackInSlot, 0, 9, false)) {
                                return null;
                        }

                        if (stackInSlot.stackSize == 0) {
                                slotObject.putStack(null);
                        } else {
                                slotObject.onSlotChanged();
                        }

                        if (stackInSlot.stackSize == stack.stackSize) {
                                return null;
                        }
                        slotObject.onPickupFromSlot(player, stackInSlot);
                }
                return stack;
        }
}

**********
GuiGrinder
**********
package net.minecraft.mardiff;

import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.util.StatCollector;

import org.lwjgl.opengl.GL11;

public class GuiGrinder extends GuiContainer {

        public GuiGrinder (InventoryPlayer inventoryPlayer,
                        TileEntityGrinder tileEntity) {
                //the container is instanciated and passed to the superclass for handling
                super(new ContainerGrinder(inventoryPlayer, tileEntity));
        }

        @Override
        protected void drawGuiContainerForegroundLayer(int param1, int param2) {
                //draw text and stuff here
                //the parameters for drawString are: string, x, y, color
                fontRenderer.drawString("Grinder", 8, 6, 4210752);
                //draws "Inventory" or your regional equivalent
                fontRenderer.drawString(StatCollector.translateToLocal("container.inventory"), 8, ySize - 96 + 2, 4210752);
        }

        @Override
        protected void drawGuiContainerBackgroundLayer(float par1, int par2,
                        int par3) {
                //draw your Gui here, only thing you need to change is the path
                int texture = mc.renderEngine.getTexture("/textures/gui/grinder.png");
                GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
                this.mc.renderEngine.bindTexture(texture);
                int x = (width - xSize) / 2;
                int y = (height - ySize) / 2;
                this.drawTexturedModalRect(x, y, 0, 0, xSize, ySize);
        }

}

**********
GuiHandler
**********
package net.minecraft.mardiff;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;
import cpw.mods.fml.common.network.IGuiHandler;

public class GuiHandler implements IGuiHandler {
        //returns an instance of the Container you made earlier
        @Override
        public Object getServerGuiElement(int id, EntityPlayer player, World world,
                        int x, int y, int z) {
                TileEntity tileEntity = world.getBlockTileEntity(x, y, z);
                if(tileEntity instanceof TileEntityGrinder){
                        return new ContainerGrinder(player.inventory, (TileEntityGrinder) tileEntity);
                }
                return null;
        }

        //returns an instance of the Gui you made earlier
        @Override
        public Object getClientGuiElement(int id, EntityPlayer player, World world,
                        int x, int y, int z) {
                TileEntity tileEntity = world.getBlockTileEntity(x, y, z);
                if(tileEntity instanceof TileEntityGrinder){
                        return new GuiGrinder(player.inventory, (TileEntityGrinder) tileEntity);
                }
                return null;

        }
}

****************
SMPPacketHandler
****************
package net.minecraft.mardiff;

import java.io.ByteArrayInputStream;
import java.io.DataInputStream;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.network.INetworkManager;
import net.minecraft.network.packet.Packet250CustomPayload;
import cpw.mods.fml.common.network.IPacketHandler;
import cpw.mods.fml.common.network.Player;

public class SMPPacketHandler implements IPacketHandler{


        @Override
        public void onPacketData(INetworkManager manager, Packet250CustomPayload payload, Player player){
                DataInputStream data = new DataInputStream(new ByteArrayInputStream(payload.data));
                EntityPlayer sender = (EntityPlayer) player;
        }
}

****************
SSPPacketHandler
****************
package net.minecraft.mardiff;


import java.io.ByteArrayInputStream;
import java.io.DataInputStream;

import net.minecraft.network.INetworkManager;
import net.minecraft.network.packet.Packet250CustomPayload;
import cpw.mods.fml.common.network.IPacketHandler;
import cpw.mods.fml.common.network.Player;


public class SSPPacketHandler implements IPacketHandler{
        @Override
        public void onPacketData(INetworkManager manager, Packet250CustomPayload payload, Player player){
                DataInputStream data = new DataInputStream(new ByteArrayInputStream(payload.data));
        }
}