UpgradeAutoFeeder.java

package chbachman.armour.upgrade.upgradeList;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemFood;
import net.minecraft.item.ItemStack;
import net.minecraft.util.FoodStats;
import net.minecraft.world.World;
import chbachman.api.configurability.Configurable;
import chbachman.api.configurability.ConfigurableField;
import chbachman.api.item.IModularItem;
import chbachman.api.nbt.helper.NBTInteger;
import chbachman.api.upgrade.Upgrade;
import chbachman.api.util.ArmourSlot;
import chbachman.armour.util.ConfigHelper;

public class UpgradeAutoFeeder extends Upgrade {

    // Data Storage
    private NBTInteger storedFood = new NBTInteger("foodLevel", 0);

    // Configrability
    @Configurable
    public ConfigurableField foodAmount = new ConfigurableField(this, "foodAmount", 100);

    // Config Options
    private int absorbing;
    private int eating;
    private int amountToHold;

    public UpgradeAutoFeeder() {
        super("feeder");
    }

    @Override
    public void registerConfigOptions() {
        absorbing = ConfigHelper.get(ConfigHelper.ENERGY, this, "cost for absorbing food", 100);
        eating = ConfigHelper.get(ConfigHelper.ENERGY, this, "cost for eating food", 100);

        amountToHold = ConfigHelper.get(ConfigHelper.OTHER, this, "amount of food to hold", 20);
    }

    @Override
    public boolean isCompatible(IModularItem item, ItemStack stack, int armourType) {
        return armourType == ArmourSlot.HELMET.id;
    }

    @Override
    public int onTick(World world, EntityPlayer player, ItemStack stack, ArmourSlot slot) {

        int modifiedAmount = amountToHold * foodAmount.get(stack).getAmount();

        if (storedFood.get(stack) < modifiedAmount) { // Grab the food from the
                                                      // player's inventory.
            for (int i = 0; i < player.inventory.mainInventory.length; i++) {

                ItemStack playerStack = player.inventory.mainInventory[i];

                if (playerStack == null) {
                    continue;
                }

                if (playerStack.getItem() instanceof ItemFood) {
                    ItemFood food = (ItemFood) playerStack.getItem();

                    int amountToStore = food.func_150905_g(playerStack);

                    if (modifiedAmount - storedFood.get(stack) >= amountToStore) { // If
                                                                                   // we
                                                                                   // can
                                                                                   // store
                                                                                   // food
                        storedFood.set(stack, storedFood.get(stack) + amountToStore);

                        playerStack.stackSize--;

                        if (playerStack.stackSize <= 0) {
                            player.inventory.mainInventory[i] = null;
                        }

                        return absorbing;
                    }
                }
            }
        }

        FoodStats food = player.getFoodStats(); // Feed the player if necesary.

        if (food.needFood() && this.storedFood.get(stack) > 0) {

            int foodNeeded = 20 - food.getFoodLevel();

            food.addStats(foodNeeded, 0);

            this.storedFood.set(stack, this.storedFood.get(stack) - foodNeeded);

            return eating;
        }

        return 0;

    }

}