Code from 1.7.10:

public boolean onItemUse(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, World par3World, int par4, int par5, int par6, int par7, float par8, float par9, float par10)
{

	if(!par3World.isRemote && /*par3World.getBlockId(par4, par5, par6) == 2 &&*/ par2EntityPlayer.capabilities.isCreativeMode == false)
	{
		par2EntityPlayer.addExperienceLevel(1);
		par1ItemStack.damageItem(2, par2EntityPlayer);
		this.dropItemStack(new ItemStack(LOZmod.itemizedExperienceEmpty, 1), par3World, par4, par5, par6);
	}

	return super.onItemUse(par1ItemStack, par2EntityPlayer, par3World, par4, par5,
				par6, par7, par8, par9, par10);
}

What's the replacement for the the "return super.onItemUse" part?

Well, that would depend on the function being overriden.  If you aren't overriding an existent function, you can't call super (well, you can, but generally speaking you don't ask the superclass to run a different function than the one the subclass is running).

 

Ten bucks says if you comment the line and run the code, this function never gets called.

Well, that would depend on the function being overriden.  If you aren't overriding an existent function, you can't call super (well, you can, but generally speaking you don't ask the superclass to run a different function than the one the subclass is running).

 

Ten bucks says if you comment the line and run the code, this function never gets called.

If I comment the line it tells me I need a return statement.

In 1.7.10 the code worked just fine.

Obviously add "return false" just so you can run it.

 

But seriously, are you sure you have the right method signature?  If you put @Override on the line above this method, what does Eclipse tell you?

Found the replacement:

public boolean onItemUse(ItemStack stack, EntityPlayer playerIn, World worldIn, BlockPos pos, EnumFacing side, float hitX, float hitY, float hitZ)