FirePit update routine

teFirePit.java

public void updateEntity()
    {
        if (worldObj.isRemote)
        {
            return;
        }

        iIsBurning = false;

        if (heatFurnace() > 0F)
        {
            iIsBurning = true;
        }

        heatIngots();

        markDirty();
    }

    public float heatFurnace() {
        float tTotalAddedHeat;
        iLastAddedHeat = 0F;

        for (int tFuelStackIndex = 0; tFuelStackIndex < FUELSTACK_AMOUNT; tFuelStackIndex++) {
            if (iFuelStackBurningTime[tFuelStackIndex] == null)
            {
                iFuelStackBurningTime[tFuelStackIndex] = -1;
            }

            if (iFuelStackBurningTime[tFuelStackIndex] == -1)
            {
                if (iFuelStacks[tFuelStackIndex] == null)
                {
                    continue;
                }

                ItemStack tTargetedFuelStack = iFuelStacks[tFuelStackIndex];

                //Check if the stack is a valid Fuel in the Furnace
                if ((tTargetedFuelStack != null) && (TileEntityFurnace.isItemFuel(tTargetedFuelStack))) {

                    //Update the Fuelstack if a new piece of fuel is needed.
                    if (iFuelStackBurningTime[tFuelStackIndex] == -1) {
                        --tTargetedFuelStack.stackSize;

                        iFuelStackBurningTime[tFuelStackIndex] = 0;

                        iFuelStackFuelAmount[tFuelStackIndex] = TileEntityFurnace.getItemBurnTime(tTargetedFuelStack);

                        if (tTargetedFuelStack.stackSize == 0) {
                            iFuelStacks[tFuelStackIndex] = tTargetedFuelStack.getItem().getContainerItem(tTargetedFuelStack);
                        }
                    }

                }
            }

            if (iFuelStackBurningTime[tFuelStackIndex] > -1)
            {

                ++iFuelStackBurningTime[tFuelStackIndex];

                if (tFuelStackIndex == 3)
                {
                    System.out.println(iFuelStackBurningTime[tFuelStackIndex]);
                }

                //Process depleted fuelstack
                if (iFuelStackBurningTime[tFuelStackIndex].intValue() == iFuelStackFuelAmount[tFuelStackIndex].intValue()) {
                    iFuelStackBurningTime[tFuelStackIndex] = -1;
                }

                iLastAddedHeat += iPositiveHeatCoefficient;
            }
        }

        tTotalAddedHeat = iLastAddedHeat;
        return tTotalAddedHeat;
    }

    public float heatIngots()
    {
        if (iLastAddedHeat <= 0F) {return 0F;}

        float tAddableHeatPerItem = iLastAddedHeat / (getHeatableIngotAmount() + 1);

        iCurrentTemperature += (tAddableHeatPerItem + iNegativeHeatCoefficient);

        for (int tIngotStackCount = 0; tIngotStackCount < INGOTSTACKS_AMOUNT; tIngotStackCount ++)
        {
            if (iIngotStacks[tIngotStackCount] == null )
            {
                continue;
            }

            ItemHeatedIngot.setItemTemperature(iIngotStacks[tIngotStackCount], tAddableHeatPerItem + iNegativeHeatCoefficient);
        }

        iLastAddedHeat = iLastAddedHeat + (getHeatableIngotAmount() + 1) * iNegativeHeatCoefficient;

        return tAddableHeatPerItem + iNegativeHeatCoefficient;
    }
    
    @Override
    public void markDirty()
    {
        worldObj.markBlockForUpdate(xCoord, yCoord, zCoord);

        super.markDirty();
        worldObj.func_147451_t(xCoord, yCoord, zCoord);
    }