code block

public void update(){
        boolean flag = this.isBurning();
        boolean flag1 = false;

        if (!this.world.isRemote){
        	if(hasUpgrade(ModItems.electricfuel) == true) {
        		if (this.storage.getEnergyStored() < FE_PER_TICK) {
        			return;
        		}
        		else if (this.cookTime > 0) {
                    storage.consumePower(FE_PER_TICK);
        		}
        }
        else if (this.isBurning() && hasUpgrade(ModItems.electricfuel) == false){
            --this.furnaceBurnTime;
        }

        if (!this.world.isRemote){
            ItemStack itemstack = (ItemStack)this.slot.get(1);

            if (this.isBurning() || !itemstack.isEmpty() && !((ItemStack)this.slot.get(0)).isEmpty()){
                if (!this.isBurning() && this.canSmelt()){
                    this.furnaceBurnTime = getItemBurnTime(itemstack);
                    this.currentItemBurnTime = this.furnaceBurnTime;

                    if (this.isBurning()){
                        flag1 = true;

                        if (!itemstack.isEmpty()){
                            Item item = itemstack.getItem();
                            itemstack.shrink(1);

                            if (itemstack.isEmpty()){
                                ItemStack item1 = item.getContainerItem(itemstack);
                                this.slot.set(1, item1);
                            }
                        }
                    }
                }

                if (this.isBurning() && this.canSmelt()){
                    ++this.cookTime;

                    if (this.cookTime == this.totalCookTime){
                        this.cookTime = 0;
                        this.totalCookTime = this.getCookTime((ItemStack)this.slot.get(0));
                        this.smeltItem();
                        flag1 = true;
                    }
                }
                else{
                    this.cookTime = 0;
                }
            }
            else if (!this.isBurning() && this.cookTime > 0){
                this.cookTime = MathHelper.clamp(this.cookTime - 2, 0, this.totalCookTime);
            }

            if (flag != this.isBurning()){
                flag1 = true;
                DiamondFurnace.setState(this.isBurning(), this.world, this.pos);
            }
        }

        if (flag1){
            this.markDirty();
        }
    }
}