[1.7.2] Crash on isItemValidForSlot()

[Filipsi]

Hi,

 

I need some help with my project.

I am trying to create custom furnace.

I have GUI working and now I am in process of coding container for my furnace.

And I bumped in to a problem.

 

In container for my furnace i have this code:

@Override
public boolean isItemValidForSlot(int i, ItemStack itemstack) {
if(i == FuelSlot){			
	return fuelRegistry.isFuel(itemstack);
}else{
	return false;
}
}

 

And this is my FuelRegistry class:

public class fuelRegistry {

private static String[] fuelRegister;

public fuelRegistry(){
		fuelRegister = new String[] {
				Items.coal.getUnlocalizedName(),
				Items.stick.getUnlocalizedName(),

				Blocks.planks.getUnlocalizedName(),
				Blocks.log.getUnlocalizedName(),
				Blocks.coal_block.getUnlocalizedName()
		};

}

public static boolean isFuel(ItemStack itemstack){
         return Arrays.asList(fuelRegister).contains(itemstack.getUnlocalizedName());
}

}

 

When I am trying to check if furnace can accept fuel this way, it crashes and I have no idea why.

I also tryed it with ItemStack array and foreach instead of contains.

 

Thank you for any help.

Filipsi

[larsgerrits]

Where do you call "new fuelRegistry()"? If you don't, the fuelRegister array is still null, as you initialize it when you make a new instance of the fuelRegistry class.

 

PS, please use camel-case, it makes the code much more easier to read.

[Filipsi]

Thanks! I thought that I called it in main class. Silly mistake.