I'm updating a mod where, in 1.6, they saved the Data Value of blocks inside their contraptions' Tile Entity classes. Obviously I want to update that to 1.7 and remove the reliance on Data Values. The problem is that everything I try doesn't work. Does someone know how to do this?

I'm updating a mod where, in 1.6, they saved the Data Value of blocks inside their contraptions' Tile Entity classes. Obviously I want to update that to 1.7 and remove the reliance on Data Values. The problem is that everything I try doesn't work. Does someone know how to do this?

 

What kind of value do you want do save? If it is something like color or direction you could use metadata, otherwise here is what i use:

 

 

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

	//saving energy
	nbt.setShort("DimensionEnergy", (short)this.dimensionEnergy);
	nbt.setShort("DimensionEnergyCharging", (short)this.dimensionEnergyCharging);
	nbt.setShort("Energy", (short)this.energy);


	//items
	NBTTagList list = new NBTTagList();
	for(int i=0; i<slots.length; i++){
		if(this.slots[i]!=null){
			NBTTagCompound compound = new NBTTagCompound();
			compound.setByte("Slot", (byte)i);
			this.slots[i].writeToNBT(compound);
			list.appendTag(compound);
		}
	}
	nbt.setTag("Items", list);

	if(this.isInvNameLocalized()){
		nbt.setString("CustomName", this.localizedName);
	}

}

public void readFromNBT(NBTTagCompound nbt){
	super.readFromNBT(nbt);

	//items
	NBTTagList list = nbt.getTagList("Items", 10);
	this.slots = new ItemStack[this.getSizeInventory()];

	for(int i=0; i< list.tagCount(); i++){
		NBTTagCompound compound=list.getCompoundTagAt(i);
		byte b = compound.getByte("Slot");
			if(b >= 0 && b<this.slots.length){
				this.slots[b]= ItemStack.loadItemStackFromNBT(compound);
			}

	}

	this.dimensionEnergy=nbt.getShort("DimensionEnergy");
	this.dimensionEnergyCharging=nbt.getShort("DimensionEnergyCharging");
	this.energy=nbt.getShort("Energy");

	if(nbt.hasKey("CustomName")){
		this.localizedName=nbt.getString("CustomName");
	}

}

 

 

We want to save the Block or Item that the variable holds, and it's not an ItemStack. These Tile Entities are also not IInventories or ISidedInventories.