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package darkknight.jewelrycraft.util;

import darkknight.jewelrycraft.events.ScreenHandler;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.nbt.NBTTagCompound;

/**
 * Code taken from OpenBlocks
 */
public class PlayerUtils {
	/**
	 * Returns the NBTTag of the player
	 * 
	 * @param player
	 *            the player
	 * @param modName
	 *            the mod name
	 * @return appropriate NBTTag
	 */
	public static NBTTagCompound
			getModPlayerPersistTag(EntityPlayer player, String modName) {
		if (player.worldObj.isRemote && ScreenHandler.tagCache != null)
			return ScreenHandler.tagCache;

		NBTTagCompound tag = player.getEntityData();
		NBTTagCompound persistTag = null;
		if (tag.hasKey(EntityPlayer.PERSISTED_NBT_TAG))
			persistTag =
					tag.getCompoundTag(EntityPlayer.PERSISTED_NBT_TAG);
		else {
			persistTag = new NBTTagCompound();
			tag.setTag(EntityPlayer.PERSISTED_NBT_TAG, persistTag);
		}
		NBTTagCompound modTag = null;
		if (persistTag.hasKey(modName))
			modTag = persistTag.getCompoundTag(modName);
		else {
			modTag = new NBTTagCompound();
			persistTag.setTag(modName, modTag);
		}
		return modTag;
	}
}