MagicBees/magicbees_src/magicbees/main/utils/IMCManager.java

package magicbees.main.utils;

import magicbees.bees.AlleleEffectCrumbling;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTBase;
import net.minecraft.nbt.NBTTagCompound;
import cpw.mods.fml.common.FMLLog;
import cpw.mods.fml.common.event.FMLInterModComms.IMCEvent;
import cpw.mods.fml.common.event.FMLInterModComms.IMCMessage;

public class IMCManager
{
	public static void handle(IMCEvent event)
	{
		for (IMCMessage message : event.getMessages())
		{
			try
			{
				if (message.key.equals("addCrumblePair"))
				{
					handleCrumbleBlock(message);
				}
				else
				{
					FMLLog.warning("Magic Bees recieved an IMC Message from a mod %s " +
						"but does not support messages keyed with %s.",
						message.getSender(), message.key);
				}
			}
			catch (Exception e)
			{
				FMLLog.warning("Magic Bees recieved an invalid IMC Message from a mod %s! Please inform " +
					"the author of %s that they may not be correctly implementing message for key '%s'. Error details follow.",
					message.getSender(), message.key);
				FMLLog.info(e.getMessage());
			}
		}
	}
	
	private static void handleCrumbleBlock(IMCMessage message) throws Exception
	{
		NBTTagCompound root = message.getNBTValue();
		NBTBase source = root.getTag("source");
		NBTBase target = root.getTag("target");
		
		if (source != null && source instanceof NBTTagCompound)
		{
			ItemStack sourceItem = ItemStack.loadItemStackFromNBT((NBTTagCompound)source);
			if (target  instanceof NBTTagCompound)
			{
				ItemStack targetItem = ItemStack.loadItemStackFromNBT((NBTTagCompound)target);
				AlleleEffectCrumbling.addPairToMap(sourceItem, targetItem);
			}
			else
			{
				throw new Exception("Required tag 'target' was either empty, or not a valid ItemStack.");
			}
		}
		else
		{
			throw new Exception("Required tag 'source' was either empty, or not a valid ItemStack.");
		}
	}
}