ActuallyAdditions/src/main/java/ellpeck/actuallyadditions/items/ItemBattery.java

package ellpeck.actuallyadditions.items;

import cofh.api.energy.ItemEnergyContainer;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import ellpeck.actuallyadditions.util.INameableItem;
import ellpeck.actuallyadditions.util.ItemUtil;
import ellpeck.actuallyadditions.util.KeyUtil;
import ellpeck.actuallyadditions.util.ModUtil;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.EnumRarity;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.IIcon;
import net.minecraft.world.World;

import java.util.List;

public class ItemBattery extends ItemEnergyContainer implements INameableItem{

    public ItemBattery(){
        super(1000000, 10000);
        this.setMaxStackSize(1);
        this.setHasSubtypes(true);
    }

    @Override
    public double getDurabilityForDisplay(ItemStack stack){
        double energyDif = getMaxEnergyStored(stack)-getEnergyStored(stack);
        double maxAmount = getMaxEnergyStored(stack);
        return energyDif/maxAmount;
    }

    @Override
    public boolean showDurabilityBar(ItemStack itemStack){
        return true;
    }

    @Override
    public void onCreated(ItemStack stack, World world, EntityPlayer player){
        this.setEnergy(stack, 0);
    }

    @Override
    public EnumRarity getRarity(ItemStack stack){
        return EnumRarity.rare;
    }

    @Override
    public IIcon getIcon(ItemStack stack, int pass){
        return this.itemIcon;
    }

    @Override
    @SideOnly(Side.CLIENT)
    public void registerIcons(IIconRegister iconReg){
        this.itemIcon = iconReg.registerIcon(ModUtil.MOD_ID_LOWER + ":" + this.getName());
    }

    public void setEnergy(ItemStack stack, int energy){
        NBTTagCompound compound = stack.getTagCompound();
        if(compound == null) compound = new NBTTagCompound();
        compound.setInteger("Energy", energy);
        stack.setTagCompound(compound);
    }

    @Override
    @SuppressWarnings("unchecked")
    @SideOnly(Side.CLIENT)
    public void getSubItems(Item item, CreativeTabs tabs, List list){
        ItemStack stackFull = new ItemStack(this);
        this.setEnergy(stackFull, this.getMaxEnergyStored(stackFull));
        list.add(stackFull);

        ItemStack stackEmpty = new ItemStack(this);
        this.setEnergy(stackEmpty, 0);
        list.add(stackEmpty);
    }

    @Override
    public String getName(){
        return "itemBattery";
    }

    @Override
    @SuppressWarnings("unchecked")
    @SideOnly(Side.CLIENT)
    public void addInformation(ItemStack stack, EntityPlayer player, List list, boolean isHeld){
        ItemUtil.addInformation(this, list, 1, "");
        if(KeyUtil.isShiftPressed()){
            list.add(this.getEnergyStored(stack) + "/" + this.getMaxEnergyStored(stack) + " RF");
        }
    }

    @Override
    public boolean getShareTag(){
        return true;
    }
}