I have an item that teleports the player when they right click, and saves the location when they shift right click. I want to have the itemstack have a custom name, so the player can get the name when they scroll to the item, which I can set with setStackDisplayName... But how do I get the name string from the GUI?

 

Item Class

 

 

public class WarpHome extends Item
{
public WarpHome(String name)
{
	this.setMaxStackSize(1);
	this.setMaxDamage(64);
        this.setUnlocalizedName(name);
        this.setTextureName(Main.MODID + ":" + this.getUnlocalizedName().substring(5));
	this.setCreativeTab(ProxyCommon.serialModTab);
	Main.RegisterItem(this);
}

@Override
public ItemStack onItemRightClick(ItemStack stack, World world, EntityPlayer player)
{
	NBTTagCompound nbtTagCompound = stack.getTagCompound();
	if (nbtTagCompound == null) 
	{
		nbtTagCompound = new NBTTagCompound();
		stack.setTagCompound(nbtTagCompound);
	}

	if (player.isSneaking())
	{
		if (!world.isRemote)
		{
			GetNameGUI nameGui = new GetNameGUI(stack);
			Minecraft.getMinecraft().displayGuiScreen(nameGui);
			//if ((nameGui.name != null) && (!nameGui.name.equals(""))) stack.setStackDisplayName(nameGui.name);
		}

		nbtTagCompound.setBoolean("bound", true);
		nbtTagCompound.setInteger("dimension", player.dimension);
		nbtTagCompound.setDouble("x", player.posX);
		nbtTagCompound.setDouble("y", player.posY);
		nbtTagCompound.setDouble("z", player.posZ);
	}
	else if ((!world.isRemote) && (nbtTagCompound.hasKey("bound")) &&
		(nbtTagCompound.getBoolean("bound")) && (player instanceof EntityPlayerMP))
	{
		EntityPlayerMP playerMP = (EntityPlayerMP)player;
		double x = nbtTagCompound.getDouble("x");
		double y = nbtTagCompound.getDouble("y");
		double z = nbtTagCompound.getDouble("z");
		int dimension = nbtTagCompound.getInteger("dimension");
		if (player.dimension != dimension)player.travelToDimension(dimension);				
		playerMP.playerNetServerHandler.setPlayerLocation(x, y, z, playerMP.rotationYaw, playerMP.rotationPitch);
		world.playSoundEffect(x, y, z, "mob.endermen.portal", 1.0F, 1.0F);
		if (player.isBurning()) player.extinguish();
		player.heal(1.0f);
		stack.damageItem(1, player);
	}
	return stack;
}
@SideOnly(Side.CLIENT)
@Override
public void addInformation(ItemStack stack, EntityPlayer player, List description, boolean advanced)
{
	NBTTagCompound nbtTagCompound = stack.getTagCompound();
	if ((nbtTagCompound != null) && (nbtTagCompound.hasKey("bound")) && (nbtTagCompound.getBoolean("bound")))
		description.add("Warp to x" + nbtTagCompound.getInteger("x") +" y" + nbtTagCompound.getInteger("y") +
		" z" + nbtTagCompound.getInteger("z") + " d" + nbtTagCompound.getInteger("dimension"));
	else description.add("Shift + Right Click to store a location");
}
}

 

 

 

GUI Class

 

 

public class GetNameGUI extends GuiScreen
{
public static final int GUI_ID = 20;
private int guiWidth = 210;
private int guiHeight = 97;
private GuiTextField txtName;
public String name = "";
private ItemStack caller;

public GetNameGUI(ItemStack item)
{
	caller = item;
}

@Override
public void initGui()
{	
	txtName = new GuiTextField(fontRendererObj, width / 2 -75, height / 2 -5, 150, 20);
	txtName.setFocused(true);
	txtName.setMaxStringLength(32);
	buttonList.add(new GuiButton(1, width / 2 -50, height / 2 +20, 100, 20, "Done"));
}
@Override
public void keyTyped(char c, int keyCode)
{
	super.keyTyped(c, keyCode);
	if ((keyCode == Keyboard.KEY_RETURN) || ((keyCode == Keyboard.KEY_E) && (!txtName.isFocused())))
	{
		caller.setStackDisplayName(name);
		this.mc.displayGuiScreen(null);
	}

	txtName.textboxKeyTyped(c, keyCode);
}
@Override
public void mouseClicked(int i, int j, int k)
{
	super.mouseClicked(i, j, k);
	txtName.mouseClicked(i, j, k);
}
@Override
public void updateScreen()
{
	name = txtName.getText();
}
@Override
public void drawScreen(int i, int j, float f)
{
	drawDefaultBackground();
	GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
	mc.renderEngine.bindTexture(new ResourceLocation(Main.MODID, "textures/gui/name.png"));
	drawTexturedModalRect((width / 2) - (guiWidth / 2), (height / 2) - (guiHeight / 2), 0, 0, guiWidth, guiHeight);
	drawCenteredString(fontRendererObj, "Name this location.", width / 2, height / 2 -35, 0xffffff);
	txtName.drawTextBox();	
	super.drawScreen(i, j, f);
}
@Override
public void actionPerformed(GuiButton button)
{
	caller.setStackDisplayName(name);
	this.mc.displayGuiScreen(null);
	super.actionPerformed(button);
}
}

 

 

You need to use packets. Send information back from the client to the server, so the server can update the item.

I had never heard of packets in Minecraft before, so I did a search and found this

http://www.minecraftforge.net/forum/index.php/topic,20135.0.html

It was really easy to implement after I got in the right mindset.

 

TLDR: I named my item stack using a gui plus packets