[1.10.2] data beetween gui and tileEntity

personnedu13 · July 26, 2017

Hi,

I want to create a complex tileentity updated when a button is pressed in the gui.

But I've got some problems and I just dont understand how set the tileentitydata from the gui.

Here is my class :

I just want to send and receive the sideout value beetween gui and tileentity.

GuiTeleporter :

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package com.personnedu13.test.client.gui;

@SideOnly(Side.CLIENT)
public class GuiTeleporter extends GuiContainer{
    
    private static final ResourceLocation TRANSLOCATOR_GUI_TEXTURES = new ResourceLocation(Main.MODID + ":textures/gui/container/teleporter.png");
    private final IInventory tileTeleporter;
    
    public GuiTeleporter(IInventory playerInv, IInventory teInv) {
        super(new ContainerTeleporter(playerInv, teInv));
        this.tileTeleporter = teInv;
        this.xSize = 176;
        this.ySize = 185;
    }
    
    
    public void initGui() {
        super.initGui();
        this.buttonList.add(new NorthButton(0, 24 + this.guiLeft, 26 + this.guiTop));
        this.buttonList.add(new WestButton(1, 12 + this.guiLeft, 38 + this.guiTop));
        this.buttonList.add(new SouthButton(2, 24 + this.guiLeft, 55 + this.guiTop));
        this.buttonList.add(new EastButton(3, 41 + this.guiLeft, 38 + this.guiTop));
        this.buttonList.add(new TopButton(4, 24 + this.guiLeft, 38 + this.guiTop));
        
        int i = this.tileTeleporter.getField(0);
        GuiTeleporter.DirectionnalButton j = (GuiTeleporter.DirectionnalButton) buttonList.get(i);
        j.setSelected(true);
    }
    
    public void updateScreen() {
        super.updateScreen();
    }
    
    protected void actionPerformed(GuiButton button) throws IOException {
        
        if (button instanceof DirectionnalButton) {
            GuiTeleporter.DirectionnalButton dirButton = (GuiTeleporter.DirectionnalButton)button;
            if (dirButton.isSelected())
                return;
            this.tileTeleporter.setField(0, dirButton.id);
            this.buttonList.clear();
            this.initGui();
            ModPacketHandler.INSTANCE.sendToServer(new UpdateTe());
        }
    }
    
    @Override
    protected void drawGuiContainerBackgroundLayer(float partialTicks, int mouseX, int mouseY) {
        GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
        this.mc.getTextureManager().bindTexture(TRANSLOCATOR_GUI_TEXTURES);
        int i = (this.width - this.xSize) / 2;
        int j = (this.height - this.ySize) / 2;
        this.drawTexturedModalRect(i, j, 0, 0, this.xSize, this.ySize);
    }
    
    //==========Button class==========
    @SideOnly(Side.CLIENT)
    static class SelectableButton extends GuiButton {
    
        private final int textureX;
        private final int textureY;
    
        boolean selected = false;
        protected SelectableButton(int buttonId, int x, int y, int width, int height, int textureXIn, int textureYIn) {
            super(buttonId, x , y, width, height, "");
            this.textureX = textureXIn;
            this.textureY = textureYIn;
        }
    
        public void drawButton(Minecraft mc, int mouseX, int mouseY)
        {
            if (this.visible)
            {
                mc.getTextureManager().bindTexture(GuiTeleporter.TRANSLOCATOR_GUI_TEXTURES);
                GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
                this.hovered = mouseX >= this.xPosition && mouseY >= this.yPosition && mouseX < this.xPosition + this.width && mouseY < this.yPosition + this.height;
                int i = this.textureX;
                int j = this.textureY;
                if (!this.enabled)
                {
                    j += this.height * 3;
                }
                else if (this.selected)
                {
                    j += this.height * 2;
                }
                else if (this.hovered)
                {
                    j += this.height * 1;
                }
                this.drawTexturedModalRect(this.xPosition, this.yPosition, i, j, this.width, this.height);
            }
        }
        public boolean isSelected()
        {
            return this.selected;
        }
        public void setSelected(boolean selectedIn)
        {
            this.selected = selectedIn;
        }
    }
    class DirectionnalButton extends GuiTeleporter.SelectableButton {
        protected DirectionnalButton(int buttonId, int x, int y, int width, int height, int textureXIn, int textureYIn) {
            super(buttonId, x, y, width, height, textureXIn, textureYIn);
        }
    }
    
    @SideOnly(Side.CLIENT)
    class NorthButton extends GuiTeleporter.DirectionnalButton {
        public NorthButton(int buttonId, int x, int y) {
            super(buttonId, x, y, 15, 10, 211, 0);
        }
    }
    
    @SideOnly(Side.CLIENT)
    class WestButton extends GuiTeleporter.DirectionnalButton {
        public WestButton(int buttonId, int x, int y) {
            super(buttonId, x, y, 10, 15, 201, 0);
        }
    }
    
    @SideOnly(Side.CLIENT)
    class SouthButton extends GuiTeleporter.DirectionnalButton {
        public SouthButton(int buttonId, int x, int y) {
            super(buttonId, x, y, 15, 10, 226, 0);
        }
    }
    
    @SideOnly(Side.CLIENT)
    class EastButton extends GuiTeleporter.DirectionnalButton {
        public EastButton(int buttonId, int x, int y) {
            super(buttonId, x, y, 10, 15, 191, 0);
        }
    }
    
    @SideOnly(Side.CLIENT)
    class TopButton extends GuiTeleporter.DirectionnalButton {
        public TopButton(int buttonId, int x, int y) {
            super(buttonId, x, y, 15, 15, 176, 0);
        }
    }
}

TileEntityTeleporter :

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public class TileEntityTeleporter  extends TileEntity implements ITickable, IInventory, IInteractionObject {
    
    private ItemStack EMPTY = new ItemStack((Item)null);
    
    private int sideout;
    private ItemStack[] inventory;
    private String customName;
    
    public TileEntityTeleporter() {
        this.inventory = new ItemStack[this.getSizeInventory()] ;
        this.sideout = 4;
    }
    @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));
           }
        this.sideout = nbt.getInteger("SideOut");
    }
    
    @Override
    public NBTTagCompound writeToNBT(NBTTagCompound nbt) {
        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);
            }
        }
        
        nbt.setTag("Items", list);
        nbt.setInteger("SideOut", this.sideout);
        
        return super.writeToNBT(nbt);
        
    }
    @Override
    public void update() {
        if (this.worldObj != null) {
            if (!this.worldObj.isRemote) {
                System.out.println(sideout);
            }
        }
    }
    
    @Override
    public SPacketUpdateTileEntity getUpdatePacket() {
        NBTTagCompound nbt = new NBTTagCompound();
        this.writeToNBT(nbt);
        int metadata = getBlockMetadata();
        return new SPacketUpdateTileEntity(this.pos, metadata, nbt);
    }
    @Override
    public void onDataPacket(NetworkManager net, SPacketUpdateTileEntity pkt) {
        this.readFromNBT(pkt.getNbtCompound());
    }
    @Override
    public NBTTagCompound getUpdateTag() {
        NBTTagCompound nbt = new NBTTagCompound();
        this.writeToNBT(nbt);
        return nbt;
    }
    @Override
    public void handleUpdateTag(NBTTagCompound tag) {
        this.readFromNBT(tag);
    }
    @Override
    public NBTTagCompound getTileData() {
        NBTTagCompound nbt = new NBTTagCompound();
        this.writeToNBT(nbt);
        return nbt;
    }
    
    
    public String getCustomName() {
        return this.customName;
    }
    public void setCustomName(String customName) {
        this.customName = customName;
    }
    
    public static void getSideOut() {
        
    }
    
    public final void setSideOut(int id) {
        this.sideout = id;
        this.markDirty();
    }
    
    @Override
    public String getName() {
        return this.hasCustomName() ? this.customName : "container.tileentity_tile_entity";
    }
    @Override
    public boolean hasCustomName() {
        return this.customName != null && !this.customName.equals("");
    }
    
    @Override
    public ITextComponent getDisplayName()
    {
        return (ITextComponent)(this.hasCustomName() ? new TextComponentString(this.getName()) : new TextComponentTranslation(this.getName(), new Object[0]));
    }

    @Override
    public int getSizeInventory() {
        return 2;
    }
    private boolean isInventoryEmpty()
    {
        for (int i = 0; i < this.getInventoryStackLimit();i++)
        {
            if (!(this.inventory[i].equals(null)))
            {
                return false;
            }
        }
        return true;
    }
    
    public boolean isEmpty()
    {
        return this.isInventoryEmpty();
    }
    @Override
    public ItemStack getStackInSlot(int index) {
        return this.inventory[index];
    }
    @Override
    public ItemStack decrStackSize(int index, int count) {
        ItemStack itemstack = ItemStackHelper.getAndSplit(this.inventory, index, count);
        this.markDirty();
        return itemstack;
    }
    @Override
    public ItemStack removeStackFromSlot(int index) {
        ItemStack itemstack = ItemStackHelper.getAndRemove(this.inventory, index);
        this.markDirty();
        return itemstack;
    }
    @Override
    public void setInventorySlotContents(int index, ItemStack stack) {
        if (index < 0 || index >= this.getSizeInventory()) {
            System.out.println("ERROR : INDEX INADAPTé : " + index);
            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 1;
    }
    @Override
    public boolean isUseableByPlayer(EntityPlayer player) {
        return this.worldObj.getTileEntity(this.pos) != this ? false : player.getDistanceSq((double)this.pos.getX() + 0.5D, (double)this.pos.getY() + 0.5D, (double)this.pos.getZ() + 0.5D) <= 64.0D;
    }
    @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)
    {
        switch (id)
        {
            case 0:
                return sideout;
            default:
                return 0;
        }
    }
    @Override
    public void setField(int id, int value)
    {
        switch (id)
        {
            case 0:
                sideout = value;
                break;
        default:
            break;
        }
    }
    @Override
    public int getFieldCount()
    {
        return 1;
    }
    @Override
    public void clear() {
        for (int i = 0; i < this.getSizeInventory(); i++)
            this.setInventorySlotContents(i, null);
    }
    @Override
    public Container createContainer(InventoryPlayer playerInventory, EntityPlayer playerIn) {
        return new ContainerTeleporter(playerInventory, this);
    }
    @Override
    public String getGuiID() {
        return Main.MODID + ":translocator";
    }
}

and ContainerTelepoter :

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public class ContainerTeleporter extends Container {

	private IInventory te;
	
	public ContainerTeleporter(IInventory playerInv,IInventory te) {
		this.te = te;
		this.addSlotToContainer(new Slot(te, 0 , 8 , 72));
		this.addSlotToContainer(new Slot(te, 1 , 26, 72));

        for (int y = 0; y < 3; y++)
        {
            for (int x = 0; x < 9; x++)
            {
                this.addSlotToContainer(new Slot(playerInv, x + y * 9 + 9, 8 + x * 18, 103 + y * 18 ));
            }
        }

        for (int x = 0; x < 9; x++)
        {
            this.addSlotToContainer(new Slot(playerInv, x, 8 + x * 18, 161));
        }
	}
	
	public void addListener(IContainerListener listener)
	   {
	        super.addListener(listener);
	        listener.sendAllWindowProperties(this, this.te);
	   }
	
	@SideOnly(Side.CLIENT)
    public void updateProgressBar(int id, int data)
    {
        this.te.setField(id, data);
    }

    public void onContainerClosed(EntityPlayer playerIn)
    {
        super.onContainerClosed(playerIn);
    }
    
	public IInventory getTileEntity()
    {
        return this.te;
    }
	
	@Override
    public boolean canInteractWith(EntityPlayer playerIn) {
		return !playerIn.isSpectator();
    }

	@Override
	public ItemStack transferStackInSlot(EntityPlayer playerIn, int fromSlot) {
	    ItemStack previous = null;
	    Slot slot = (Slot) this.inventorySlots.get(fromSlot);

	    if (slot != null && slot.getHasStack()) {
	        ItemStack current = slot.getStack();
	        previous = current.copy();

	        if (fromSlot < 2) {
	        	 // From Player Inventory to TE Inventory
	            if (!this.mergeItemStack(current, 0, 1, false))
	                return null;
	            
	        } else {
	        	// From TE Inventory to Player Inventory
	            if (!this.mergeItemStack(current, 2, 38, true))
	                return null;
	        }

	        if (current.stackSize == 0)
	            slot.putStack((ItemStack) null);
	        else
	            slot.onSlotChanged();

	        if (current.stackSize == previous.stackSize)
	            return null;
	        slot.onPickupFromSlot(playerIn, current);
	    }
	    return previous;
	}
}

Help !

Jay Avery · July 26, 2017

To update values from the GUI, you need to send a packet to the server with the required information. What does your UpdateTe packet do?

personnedu13 · July 26, 2017

The UpdateTe packet is trying to update the TileEntity and I've failed.

Edited July 26, 2017 by personnedu13

personnedu13 · July 26, 2017

here is the old code :

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public class UpdateTe implements IMessage {
    private BlockPos blockPos;
    private int integer;
    
    @Override
    public void fromBytes(ByteBuf buf) {
        blockPos = new BlockPos (buf.readInt(), buf.readInt(), buf.readInt());
        integer = buf.readInt();
    }
    @Override
    public void toBytes(ByteBuf buf) {
        buf.writeInt(blockPos.getX());
        buf.writeInt(blockPos.getY());
        buf.writeInt(blockPos.getZ());
        buf.writeInt(integer);
    }
    public UpdateTe() {
        integer = GuiTeleporter.getSideOut;
        blockPos = GuiTeleporter.getPos();
    }
    public static class Handler implements IMessageHandler<UpdateTe, IMessage> {
        @Override
        public IMessage onMessage(UpdateTe message, MessageContext ctx) {
            FMLCommonHandler.instance().getWorldThread(ctx.netHandler).addScheduledTask(() -> handle(message, ctx));
            return null;
        }
        private void handle(UpdateTe message, MessageContext ctx) {
            EntityPlayerMP player = ctx.getServerHandler().playerEntity;
            World world = player.worldObj;
            TileEntityTeleporter te = (TileEntityTeleporter) world.getTileEntity(message.blockPos);
            te.setField(0, integer);
        }
    }
}

Any idea for a syntax ?

Edited July 26, 2017 by personnedu13

Jay Avery · July 26, 2017

Quote

public UpdateTe() {
    integer = GuiTeleporter.getSideOut;
    blockPos = GuiTeleporter.getPos();
}

Expand

What is this? It's not even valid Java, this code should not compile. You are trying to call a field and a method which do not exist.

personnedu13 · July 26, 2017

On 7/26/2017 at 4:37 PM, Jay Avery said:

What is this? It's not even valid Java, this code should not compile. You are trying to call a field and a method which do not exist.

Expand

this is the old version of my code, in the actual code, I just reset the packet and this code is how the old code look like.

the actual is empty and look like this :

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public class UpdateTe implements IMessage {
    
    
    @Override
    public void fromBytes(ByteBuf buf) {
        
    }
    @Override
    public void toBytes(ByteBuf buf) {
      
    }
    public UpdateTe() {
    }
    public static class Handler implements IMessageHandler<UpdateTe, IMessage> {
        @Override
        public IMessage onMessage(UpdateTe message, MessageContext ctx) {
            FMLCommonHandler.instance().getWorldThread(ctx.netHandler).addScheduledTask(() -> handle(message, ctx));
            return null;
        }
        private void handle(UpdateTe message, MessageContext ctx) {
            
        }
    }
}

How should I wrote the packet if I want to send to the TileEntity the actual side ?

Edited July 26, 2017 by personnedu13

Jay Avery · July 26, 2017

You need to pass the data to the packet constructor, so that it can send the information to the server.

personnedu13 · July 26, 2017

nothing, my misstake.

Edited July 26, 2017 by personnedu13
Misstake.

Jay Avery · July 26, 2017

Your packet needs to also include an empty public constructor (one with no parameters which does nothing).

personnedu13 · July 26, 2017

Finally ! Thx you very much !

As I see I dont need to make a packet on the opposite side because I can get it from the te in the constructor.

personnedu13 · July 26, 2017

Here is my code if someone want an example :

GuiTeleporter :

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package com.personnedu13.test.client.gui;

import java.io.IOException;

import com.personnedu13.test.Main;
import com.personnedu13.test.inventory.ContainerTeleporter;
import com.personnedu13.test.network.ModPacketHandler;
import com.personnedu13.test.network.UpdateTe;

import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.inventory.IInventory;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.math.BlockPos;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class GuiTeleporter extends GuiContainer{
	
    private static final ResourceLocation TRANSLOCATOR_GUI_TEXTURES = new ResourceLocation(Main.MODID + ":textures/gui/container/translocator.png");

	private final IInventory tileTeleporter;
	private final BlockPos pos;
	
	public GuiTeleporter(IInventory playerInv, IInventory teInv, BlockPos block) {
		super(new ContainerTeleporter(playerInv, teInv));
		this.tileTeleporter = teInv;
		this.pos = block;
		this.xSize = 176;
		this.ySize = 185;
	}
	
	
    public void initGui() {
    	super.initGui();
    	this.buttonList.add(new NorthButton(0, 24 + this.guiLeft, 26 + this.guiTop));
    	this.buttonList.add(new WestButton(1, 12 + this.guiLeft, 38 + this.guiTop));
    	this.buttonList.add(new SouthButton(2, 24 + this.guiLeft, 55 + this.guiTop));
    	this.buttonList.add(new EastButton(3, 41 + this.guiLeft, 38 + this.guiTop));
    	this.buttonList.add(new TopButton(4, 24 + this.guiLeft, 38 + this.guiTop));
    	
    	int i = this.tileTeleporter.getField(0);
    	GuiTeleporter.DirectionnalButton j = (GuiTeleporter.DirectionnalButton) buttonList.get(i);
    	j.setSelected(true);
    }
    
    public void updateScreen() {
    	super.updateScreen();
    }
    
    protected void actionPerformed(GuiButton button) throws IOException {
    	
    	if (button instanceof DirectionnalButton) {
    		GuiTeleporter.DirectionnalButton dirButton = (GuiTeleporter.DirectionnalButton)button;
    		if (dirButton.isSelected())
    			return;
    		this.tileTeleporter.setField(0, dirButton.id);
    		this.buttonList.clear();
            this.initGui();
            ModPacketHandler.INSTANCE.sendToServer(new UpdateTe(dirButton.id,this.pos));
    	}
    }
    
	@Override
	protected void drawGuiContainerBackgroundLayer(float partialTicks, int mouseX, int mouseY) {
		GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
		this.mc.getTextureManager().bindTexture(TRANSLOCATOR_GUI_TEXTURES);
		int i = (this.width - this.xSize) / 2;
        int j = (this.height - this.ySize) / 2;
        this.drawTexturedModalRect(i, j, 0, 0, this.xSize, this.ySize);
	}
	
	//Button class
	@SideOnly(Side.CLIENT)
	static class SelectableButton extends GuiButton {
	
		private final int textureX;
		private final int textureY;
    
		boolean selected = false;

		protected SelectableButton(int buttonId, int x, int y, int width, int height, int textureXIn, int textureYIn) {
			super(buttonId, x , y, width, height, "");
			this.textureX = textureXIn;
			this.textureY = textureYIn;
		}
	
		/**
     	* Draws this button to the screen.
     	*/
    	public void drawButton(Minecraft mc, int mouseX, int mouseY)
    	{
        	if (this.visible)
        	{
            	mc.getTextureManager().bindTexture(GuiTeleporter.TRANSLOCATOR_GUI_TEXTURES);
            	GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
            	this.hovered = mouseX >= this.xPosition && mouseY >= this.yPosition && mouseX < this.xPosition + this.width && mouseY < this.yPosition + this.height;
            	int i = this.textureX;
            	int j = this.textureY;

            	if (!this.enabled)
            	{
            		j += this.height * 3;
            	}
            	else if (this.selected)
            	{
                	j += this.height * 2;
            	}
            	else if (this.hovered)
            	{
                	j += this.height * 1;
            	}

            	this.drawTexturedModalRect(this.xPosition, this.yPosition, i, j, this.width, this.height);
        	}
    	}

    	public boolean isSelected()
    	{
    		return this.selected;
    	}

    	public void setSelected(boolean selectedIn)
    	{
        	this.selected = selectedIn;
    	}
	}

	class DirectionnalButton extends GuiTeleporter.SelectableButton {

		protected DirectionnalButton(int buttonId, int x, int y, int width, int height, int textureXIn, int textureYIn) {
			super(buttonId, x, y, width, height, textureXIn, textureYIn);
		}
	}
	
	@SideOnly(Side.CLIENT)
	class NorthButton extends GuiTeleporter.DirectionnalButton {

		public NorthButton(int buttonId, int x, int y) {
			super(buttonId, x, y, 15, 10, 211, 0);
		}
	}
	
	@SideOnly(Side.CLIENT)
	class WestButton extends GuiTeleporter.DirectionnalButton {

		public WestButton(int buttonId, int x, int y) {
			super(buttonId, x, y, 10, 15, 201, 0);
		}
	}
	
	@SideOnly(Side.CLIENT)
	class SouthButton extends GuiTeleporter.DirectionnalButton {

		public SouthButton(int buttonId, int x, int y) {
			super(buttonId, x, y, 15, 10, 226, 0);
		}
	}
	
	@SideOnly(Side.CLIENT)
	class EastButton extends GuiTeleporter.DirectionnalButton {

		public EastButton(int buttonId, int x, int y) {
			super(buttonId, x, y, 10, 15, 191, 0);
		}
	}
	
	@SideOnly(Side.CLIENT)
	class TopButton extends GuiTeleporter.DirectionnalButton {

		public TopButton(int buttonId, int x, int y) {
			super(buttonId, x, y, 15, 15, 176, 0);
		}
	}
}

TileEntityTeleporter :

Reveal hidden contents

package com.personnedu13.test.tileentity;

import com.personnedu13.test.Main;
import com.personnedu13.test.client.gui.GuiTeleporter;
import com.personnedu13.test.inventory.ContainerTeleporter;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.ItemStackHelper;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.network.NetworkManager;
import net.minecraft.network.play.server.SPacketUpdateTileEntity;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.ITickable;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.TextComponentString;
import net.minecraft.util.text.TextComponentTranslation;
import net.minecraft.world.IInteractionObject;
import net.minecraftforge.common.capabilities.Capability;
import net.minecraftforge.common.capabilities.ICapabilityProvider;
import net.minecraftforge.items.CapabilityItemHandler;
import net.minecraftforge.items.ItemStackHandler;

public class TileEntityTeleporter  extends TileEntity implements ITickable, IInventory, IInteractionObject {
	
	private ItemStack EMPTY = new ItemStack((Item)null);
	
	private int sideout;
	private ItemStack[] inventory;
	private String customName;
	
	public TileEntityTeleporter() {
		this.inventory = new ItemStack[this.getSizeInventory()] ;
		this.sideout = 4;
	}

	@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));
		   }
		this.sideout = nbt.getInteger("SideOut");

	}
	
	@Override
	public NBTTagCompound writeToNBT(NBTTagCompound nbt) {
		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);
			}
		}
		
		nbt.setTag("Items", list);
		nbt.setInteger("SideOut", this.sideout);
		
		return super.writeToNBT(nbt);
		
	}

	@Override
	public void update() {
		if (this.worldObj != null) {
			if (!this.worldObj.isRemote) {
				System.out.println(sideout);
			}
		}
	}
	
	@Override
	public SPacketUpdateTileEntity getUpdatePacket() {
		NBTTagCompound nbt = new NBTTagCompound();
		this.writeToNBT(nbt);
		int metadata = getBlockMetadata();
		return new SPacketUpdateTileEntity(this.pos, metadata, nbt);
	}

	@Override
	public void onDataPacket(NetworkManager net, SPacketUpdateTileEntity pkt) {
		this.readFromNBT(pkt.getNbtCompound());
	}

	@Override
	public NBTTagCompound getUpdateTag() {
		NBTTagCompound nbt = new NBTTagCompound();
		this.writeToNBT(nbt);
		return nbt;
	}

	@Override
	public void handleUpdateTag(NBTTagCompound tag) {
		this.readFromNBT(tag);
	}

	@Override
	public NBTTagCompound getTileData() {
		NBTTagCompound nbt = new NBTTagCompound();
		this.writeToNBT(nbt);
		return nbt;
	}
	
	
	public String getCustomName() {
        return this.customName;
    }

    public void setCustomName(String customName) {
        this.customName = customName;
    }
    
    public static void getSideOut() {
    	
    }
    
    public final void setSideOut(int id) {
    	this.sideout = id;
    	this.markDirty();
    }
	
    @Override
	public String getName() {
	    return this.hasCustomName() ? this.customName : "container.tileentity_tile_entity";
	}

	@Override
	public boolean hasCustomName() {
		return this.customName != null && !this.customName.equals("");
	}
	
	@Override
	public ITextComponent getDisplayName()
    {
        return (ITextComponent)(this.hasCustomName() ? new TextComponentString(this.getName()) : new TextComponentTranslation(this.getName(), new Object[0]));
    }


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

	private boolean isInventoryEmpty()
    {
        for (int i = 0; i < this.getInventoryStackLimit();i++)
        {
            if (!(this.inventory[i].equals(null)))
            {
                return false;
            }
        }

        return true;
    }
	
	public boolean isEmpty()
    {
        return this.isInventoryEmpty();
    }

	@Override
	public ItemStack getStackInSlot(int index) {
		return this.inventory[index];
	}

	@Override
	public ItemStack decrStackSize(int index, int count) {
		ItemStack itemstack = ItemStackHelper.getAndSplit(this.inventory, index, count);
		this.markDirty();
        return itemstack;
	}

	@Override
	public ItemStack removeStackFromSlot(int index) {
		ItemStack itemstack = ItemStackHelper.getAndRemove(this.inventory, index);
		this.markDirty();
        return itemstack;
	}

	@Override
	public void setInventorySlotContents(int index, ItemStack stack) {
	    if (index < 0 || index >= this.getSizeInventory()) {
	    	System.out.println("ERROR : INDEX INADAPTé : " + index);
	        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 1;
	}

	@Override
	public boolean isUseableByPlayer(EntityPlayer player) {
		return this.worldObj.getTileEntity(this.pos) != this ? false : player.getDistanceSq((double)this.pos.getX() + 0.5D, (double)this.pos.getY() + 0.5D, (double)this.pos.getZ() + 0.5D) <= 64.0D;
	}

	@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)
    {
        switch (id)
        {
            case 0:
                return sideout;
            default:
                return 0;
        }
    }

    @Override
    public void setField(int id, int value)
    {
        switch (id)
        {
            case 0:
                sideout = value;
                break;
        default:
            break;
        }
    }

    @Override
    public int getFieldCount()
    {
        return 1;
    }

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

	@Override
	public Container createContainer(InventoryPlayer playerInventory, EntityPlayer playerIn) {
		return new ContainerTeleporter(playerInventory, this);
	}

	@Override
	public String getGuiID() {
		return Main.MODID + ":translocator";
	}
}

ContainerTeleporter :

Reveal hidden contents

package com.personnedu13.test.inventory;

import com.personnedu13.test.network.ModPacketHandler;

import com.personnedu13.test.tileentity.TileEntityTeleporter;

import net.minecraft.client.entity.EntityPlayerSP;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.IContainerListener;
import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class ContainerTeleporter extends Container {

	private IInventory te;
	
	public ContainerTeleporter(IInventory playerInv,IInventory te) {
		this.te = te;
		this.addSlotToContainer(new Slot(te, 0 , 8 , 72));
		this.addSlotToContainer(new Slot(te, 1 , 26, 72));

        for (int y = 0; y < 3; y++)
        {
            for (int x = 0; x < 9; x++)
            {
                this.addSlotToContainer(new Slot(playerInv, x + y * 9 + 9, 8 + x * 18, 103 + y * 18 ));
            }
        }

        for (int x = 0; x < 9; x++)
        {
            this.addSlotToContainer(new Slot(playerInv, x, 8 + x * 18, 161));
        }
	}
	
	public void addListener(IContainerListener listener)
	   {
	        super.addListener(listener);
	        listener.sendAllWindowProperties(this, this.te);
	   }
	
	@SideOnly(Side.CLIENT)
    public void updateProgressBar(int id, int data)
    {
        this.te.setField(id, data);
    }

    public void onContainerClosed(EntityPlayer playerIn)
    {
        super.onContainerClosed(playerIn);
    }
    
	public IInventory getTileEntity()
    {
        return this.te;
    }
	
	@Override
    public boolean canInteractWith(EntityPlayer playerIn) {
		return !playerIn.isSpectator();
    }

	@Override
	public ItemStack transferStackInSlot(EntityPlayer playerIn, int fromSlot) {
	    ItemStack previous = null;
	    Slot slot = (Slot) this.inventorySlots.get(fromSlot);

	    if (slot != null && slot.getHasStack()) {
	        ItemStack current = slot.getStack();
	        previous = current.copy();

	        if (fromSlot < 2) {
	        	 // From Player Inventory to TE Inventory
	            if (!this.mergeItemStack(current, 0, 1, false))
	                return null;
	            
	        } else {
	        	// From TE Inventory to Player Inventory
	            if (!this.mergeItemStack(current, 2, 38, true))
	                return null;
	        }

	        if (current.stackSize == 0)
	            slot.putStack((ItemStack) null);
	        else
	            slot.onSlotChanged();

	        if (current.stackSize == previous.stackSize)
	            return null;
	        slot.onPickupFromSlot(playerIn, current);
	    }
	    return previous;
	}
}

ModPacketHandler :

Reveal hidden contents

package com.personnedu13.test.network;

import net.minecraftforge.fml.common.network.NetworkRegistry;
import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper;
import net.minecraftforge.fml.relauncher.Side;

public class ModPacketHandler {
	private static int packetId = 0;
    public static SimpleNetworkWrapper INSTANCE = null;
	
	public static int nextID() {
        return packetId++;
    }

    public static void registerMessages(String channelName) {
        INSTANCE = NetworkRegistry.INSTANCE.newSimpleChannel(channelName);
        registerMessages();
    }

    public static void registerMessages() {
        // Register messages which are sent from the client to the server here:
        INSTANCE.registerMessage(UpdateTe.Handler.class, UpdateTe.class, nextID(), Side.SERVER);

    }
}

UpdateTe :

Reveal hidden contents

package com.personnedu13.test.network;
import com.personnedu13.test.tileentity.TileEntityTeleporter;

import io.netty.buffer.ByteBuf;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.fml.common.FMLCommonHandler;
import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler;
import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;


public class UpdateTe implements IMessage {
	private BlockPos blockPos;
	private int integer;
	
    @Override
    public void fromBytes(ByteBuf buf) {
    	blockPos = new BlockPos (buf.readInt(), buf.readInt(), buf.readInt());
    	integer = buf.readInt();
    }

    @Override
    public void toBytes(ByteBuf buf) {
    	buf.writeInt(blockPos.getX());
    	buf.writeInt(blockPos.getY());
    	buf.writeInt(blockPos.getZ());
    	buf.writeInt(integer);
    }

    public UpdateTe() {
    }

    
    public UpdateTe(int side, BlockPos pos) {
    	integer = side;
    	blockPos = pos;
    }

    public static class Handler implements IMessageHandler<UpdateTe, IMessage> {
        @Override
        public IMessage onMessage(UpdateTe message, MessageContext ctx) {
        	FMLCommonHandler.instance().getWorldThread(ctx.netHandler).addScheduledTask(() -> handle(message, ctx));
            return null;
        }

        private void handle(UpdateTe message, MessageContext ctx) {
        	EntityPlayerMP player = ctx.getServerHandler().playerEntity;
        	World world = player.worldObj;
        	TileEntityTeleporter te = (TileEntityTeleporter) world.getTileEntity(message.blockPos);
        	te.setField(0, message.integer);
        }
    }
}

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[1.10.2] data beetween gui and tileEntity

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