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

/*
 * This file ("ItemBattery.java") is part of the Actually Additions mod for Minecraft.
 * It is created and owned by Ellpeck and distributed
 * under the Actually Additions License to be found at
 * http://ellpeck.de/actaddlicense
 * View the source code at https://github.com/Ellpeck/ActuallyAdditions
 *
 * © 2015-2017 Ellpeck
 */

package de.ellpeck.actuallyadditions.mod.items;

import de.ellpeck.actuallyadditions.mod.items.base.ItemEnergy;
import de.ellpeck.actuallyadditions.mod.util.ItemUtil;
import net.minecraft.client.util.ITooltipFlag;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ActionResult;
import net.minecraft.util.Hand;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.TranslationTextComponent;
import net.minecraft.world.World;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;
import net.minecraftforge.common.util.LazyOptional;
import net.minecraftforge.energy.CapabilityEnergy;
import net.minecraftforge.energy.IEnergyStorage;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.List;

public class ItemBattery extends ItemEnergy {

    public ItemBattery(int capacity, int transfer) {
        super(capacity, transfer);
    }

    @Override
    public boolean isFoil(ItemStack stack) {
        return ItemUtil.isEnabled(stack);
    }

    @Override
    public void inventoryTick(@Nonnull ItemStack stack, World world, @Nonnull Entity entity, int itemSlot, boolean isSelected) {
        if (!world.isClientSide && entity instanceof PlayerEntity && ItemUtil.isEnabled(stack) && !isSelected) {
            PlayerEntity player = (PlayerEntity) entity;
            for (int i = 0; i < player.inventory.getContainerSize(); i++) {
                ItemStack slot = player.inventory.getItem(i);
                if (!slot.isEmpty() && slot.getCount() == 1) {
                    LazyOptional<IEnergyStorage> energy = slot.getCapability(CapabilityEnergy.ENERGY);
                    energy.ifPresent(cap -> {
                        int extractable = this.extractEnergy(stack, Integer.MAX_VALUE, true);
                        int received = cap.receiveEnergy(extractable, false);

                        if (received > 0) {
                            this.extractEnergy(stack, received, false);
                        }
                    });
                }
            }
        }
    }

    @Nonnull
    @Override
    public ActionResult<ItemStack> use(World worldIn, @Nonnull PlayerEntity player, @Nonnull Hand hand) {
        if (!worldIn.isClientSide && player.isShiftKeyDown()) {
            ItemUtil.changeEnabled(player, hand);
            return ActionResult.success(player.getItemInHand(hand));
        }
        return super.use(worldIn, player, hand);
    }

    @OnlyIn(Dist.CLIENT)
    @Override
    public void appendHoverText(ItemStack stack, @Nullable World playerIn, List<ITextComponent> list, ITooltipFlag advanced) {
        super.appendHoverText(stack, playerIn, list, advanced);
        list.add(new TranslationTextComponent("tooltip.actuallyadditions.battery." + (ItemUtil.isEnabled(stack)
            ? "discharge"
            : "noDischarge")));
        list.add(new TranslationTextComponent("tooltip.actuallyadditions.battery.changeMode"));
    }
}