I have an odd delema, I have a machine in the works, I have the input slot, if I put something in it, it apears in the first slot of my inventory(first hotbar space). Vise versa whatevers in my first inventory slot is whats in the containers slot. Heres my code. Tell me if you need anything else.

 

Container:

 

package codelyoko.Client;

import codelyoko.Lyoko;
import codelyoko.Items.ItemBottleUraniumHexaflouride;
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 ContainerCentrifuge extends Container{

protected TileEntityCentrifuge tileEntity;

public ContainerCentrifuge(InventoryPlayer invPlayer, TileEntityCentrifuge te)
{
	tileEntity = te;

	this.addSlotToContainer(new SlotCentrifugeInput(this, invPlayer, 0, 58, 20));
	bindPlayerInventory(invPlayer);
}

@Override
public boolean canInteractWith(EntityPlayer entityplayer) {
	// TODO Auto-generated method stub
	return tileEntity.isUseableByPlayer(entityplayer);
}


 @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, 0, 35, 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;
     }



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, 71 + i * 18));
			}
		}

		for (int i = 0; i < 9; i++)
		{
			addSlotToContainer(new Slot(inventoryPlayer, i, 8 + i * 18, 129));
		}
}

}

 

 

TileEntity:

 

package codelyoko.Client;

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.network.INetworkManager;
import net.minecraft.network.packet.Packet;
import net.minecraft.network.packet.Packet132TileEntityData;
import net.minecraft.tileentity.TileEntity;
import codelyoko.Items.ItemBottleUraniumHexaflouride;

public class TileEntityCentrifuge extends TileEntity implements IInventory{


private ItemStack[] inv  = new ItemStack[1];

@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 int getSizeInventory() {
	// TODO Auto-generated method stub
	return inv.length;
}

@Override
public ItemStack getStackInSlot(int i) {
	// TODO Auto-generated method stub
	return inv[i];
}

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

}

@Override
public String getInvName() {
	// TODO Auto-generated method stub
	return null;
}

@Override
public boolean isInvNameLocalized() {
	// TODO Auto-generated method stub
	return false;
}

@Override
public int getInventoryStackLimit() {
	// TODO Auto-generated method stub
	return 64;
}

@Override
public void openChest() {
	// TODO Auto-generated method stub

}

@Override
public void closeChest() {
	// TODO Auto-generated method stub

}

@Override
public boolean isItemValidForSlot(int slot, ItemStack itemstack) {
	return true;
}

@Override
public Packet getDescriptionPacket()
{
	NBTTagCompound tag = new NBTTagCompound();
	this.writeToNBT(tag);
	return new Packet132TileEntityData(xCoord, yCoord, zCoord, 0, tag);
}


@Override
public void onDataPacket(INetworkManager net, Packet132TileEntityData pkt)
{
	NBTTagCompound tag = pkt.customParam1;
	this.readFromNBT(tag);
}

@Override
public void readFromNBT(NBTTagCompound 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)
{
	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);
}
}

 

yes, because that EXACTLY what you told the program to do

this.addSlotToContainer(new SlotCentrifugeInput(this, invPlayer, 0, 58, 20));

this line translates to

 

"yo mc, make me a new slot in this container, make it id 0 at position 58,20 and make it id 0 of the IInventory invPlayer"

 

invPlayer is the inventory of the player... so yeah what youre coding and what is happenin make perfect sens