AutoSifterBreakBlockNotWorking

package net.nucleria.GeologyMod.common.item;

import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.BlockPos;
import net.minecraft.util.EnumFacing;
import net.minecraft.world.World;

public class ItemAutoSifter extends Item {

	public ItemAutoSifter(){
		super();

		this.setCreativeTab(CreativeTabs.tabTools);
		this.setMaxStackSize(1);
		this.setUnlocalizedName("auto_sifter");
	}

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

		if (worldIn.getBlockState(pos).getBlock() == Blocks.dirt){
			ItemStack dirtStack = new ItemStack(Blocks.dirt);

			worldIn.getBlockState(pos).getBlock().breakBlock(worldIn, pos, Blocks.dirt.getDefaultState());
			playerIn.inventory.addItemStackToInventory(dirtStack);

			return true;
		}
		else {
			return false;
		}

	}

}