[1.11.2]Problem with saving capability

[fcelon]

Hello,

I have added throwable weapon to my mod and I want to let any entity, that was hit by that weapon to drop it, when it dies. I have created a capability to store all weapons "inside" the entity, but there is some problem with saving the data to NBT anr the game instantly crashes. Is there anything wrong with this code.

Code:

public class SpearsInStorage implements IStorage<ISpearsIn>{
    
    @Override
    public NBTTagCompound writeNBT(Capability<ISpearsIn> capability, ISpearsIn instance, EnumFacing side) 
    {
        NBTTagCompound compound = new NBTTagCompound();
        ArrayList<ItemStack> list = instance.getSpearsIn();
        int n=1;
        for (ItemStack spear:list)
            {
                NBTTagCompound nbt = spear.serializeNBT();
                compound.setTag("Spear"+n, nbt);
                n=n+1;
            }
        compound.setBoolean("HasSpears", true);
        return compound;
    }
    
    @Override
    public void readNBT(Capability<ISpearsIn> capability, ISpearsIn instance, EnumFacing side, NBTBase nbt)
    {
        for (int n=1;n<64; n++)
        {
            try
            {
                NBTTagCompound compound = ((NBTTagCompound)nbt).getCompoundTag("Spear"+n);
                ItemStack spear = new ItemStack(compound);
                instance.addSpear(spear);
            }
            catch (Exception e)
            {
                n=64;
            }
        }
    }

}

I used this tutorial when creating the capability: http://www.planetminecraft.com/blog/forge-tutorial-capability-system/. I have already added a different capability to my mod and it worked without problems.

Thanks for any help.

Edited May 9, 2017 by fcelon

[fcelon]

This is my first mod and I'm not very experienced with Java, sorry for that. Thanks anyway.