Need help with addon develompent. [SMP] Update GUI and TileEntity

package net.minecraft.src;
import ic2.common.TileEntityBaseGenerator;
import java.util.Random;




// Referenced classes of package net.minecraft.src:
// BlockAdvancedSolarPanel, World, Block, ContainerAdvancedSolarPanel, 
// InventoryPlayer, Container




public class TileEntityAdvancedSolarPanel extends TileEntityBaseGenerator
{




public TileEntityAdvancedSolarPanel()
{
super(1);
initialized = false;
sunIsUp = false;
skyIsVisible = false;
initialized = false;
production = 512;
ticker = randomizer.nextInt(tickRate());
}




public short getMaximumStorage()
{
return 16000;
}




public int gaugeEnergyScaled(int i)
{
return (storage * i) / getMaximumStorage();
}




public int gaugeFuelScaled(int i)
{
return i;
}




public boolean gainFuel()
{
boolean flag = false;
if(ticker++ % tickRate() == 0 || !initialized)
{
updateVisibility();
initialized = true;
}
if(sunIsUp && skyIsVisible)
{
generating = 0 + BlockAdvancedSolarPanel.genDay;
int i = storage + generating;
storage = (short)i;
return true;
}
if(skyIsVisible)
{
generating = 0 + BlockAdvancedSolarPanel.genNight;
int j = storage + generating;
storage = (short)j;
return true;
} else
{
generating = 0;
return false;
}
}




public void updateVisibility()
{
if(!worldObj.isDaytime())
{
sunIsUp = false;
} else
{
sunIsUp = true;
}
skyIsVisible = true;
for(int i = yCoord + 1; i < 128; i++)
{
int j = worldObj.getBlockId(xCoord, i, zCoord);
if(j != 0 && j != Block.glass.blockID)
{
skyIsVisible = false;
return;
}
}




}




public boolean needsFuel()
{
return true;
}




public String getInvName()
{
return "Adv Solar Panel";
}




public int tickRate()
{
return 128;
}




public String getLoopSound()
{
return "none";
}




public int getLoopingTime()
{
return 256;
}




public Container getGuiContainer(InventoryPlayer inventoryplayer)
{
return new ContainerAdvancedSolarPanel(inventoryplayer, this);
}




public static Random randomizer = new Random();
public int ticker;
public int generating;
public int genDay;
public int genNight;
public boolean initialized;
public boolean sunIsUp;
public boolean skyIsVisible;
}