I cant seem to get my TileEntity to save its NBT, ive looked at updated 1.7.2 tutorials on saving NBT and it just wont work.

 

Here is my code:

 

public Packet getDescriptionPacket() {
	NBTTagCompound nbtTag = new NBTTagCompound();
	this.writeToNBT(nbtTag);
	return new S35PacketUpdateTileEntity(this.xCoord, this.yCoord, this.zCoord, 1, nbtTag);
}

public void onDataPacket(NetworkManager net, S35PacketUpdateTileEntity packet) {
	readFromNBT(packet.func_148857_g());
}

public void readFromNBT(NBTTagCompound par1NBTTagCompound)
{
	super.readFromNBT(par1NBTTagCompound);
        NBTTagList tagList = par1NBTTagCompound.getTagList("Inventory", Constants.NBT.TAG_COMPOUND);
        for (int i = 0; i < tagList.tagCount(); i++) 
          {
                NBTTagCompound tag = (NBTTagCompound) tagList.getCompoundTagAt(i);
                byte slot = tag.getByte("Slot");                                                 
                if (slot >= 0 && slot < slots.length)   
                  {
                	slots[slot] = ItemStack.loadItemStackFromNBT(tag); 
                  }                                                                                                
          }
}

public void writeToNBT(NBTTagCompound par1NBTTagCompound)
{
	super.writeToNBT(par1NBTTagCompound);

	NBTTagList itemList = new NBTTagList();
        for (int i = 0; i < slots.length; i++)                             
          {
                ItemStack stack = slots[i];                                               
                if (stack != null)                                                                      
                  {
                        NBTTagCompound tag = new NBTTagCompound();  
                        tag.setByte("Slot", (byte) i);                   
                        stack.writeToNBT(tag);  
                        itemList.appendTag(tag);
                  }
          }
        par1NBTTagCompound.setTag("Inventory", itemList);     
}

 

Slots is indeed the itemstack array used by the container/gui.

 

I'll give any more code if needed.

 

After trial and error, I came to the conclusion that writeNBT/getDescriptionPacket is called but onDataPacket/readFromNBT is not. Any ideas?

I don't see any constructors, but...

When the game reloads it will call a constructor with no arguments and then call "readFromNBT(...)". If there is no empty constructor available it will give up.

When this is the problem Eclipse throws a bunch of red text at me upon attempts to load the world. Pay attention to the red text.

When this is the problem Eclipse throws a bunch of red text at me upon attempts to load the world. Pay attention to the red text.

 

Thanks, Ive been doing this for a long time so I am looking over exceptions since vanilla minecraft makes so many. Thanks again!

Are you just trying to get it to save the nbt data?

 

world.markBlockForUpdate(x,y,z);