toughasnails.api.HealthHelper.java Source code

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Here is the source code for toughasnails.api.HealthHelper.java

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/*******************************************************************************
 * Copyright 2016, the Biomes O' Plenty Team
 * 
 * This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License.
 * 
 * To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.
 ******************************************************************************/
package toughasnails.api;

import java.util.UUID;

import com.google.common.collect.HashMultimap;
import com.google.common.collect.Multimap;

import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.entity.ai.attributes.AttributeModifier;
import net.minecraft.entity.ai.attributes.IAttributeInstance;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.world.EnumDifficulty;

public class HealthHelper {
    public static final UUID STARTING_HEALTH_MODIFIER_ID = UUID.fromString("050F240E-868F-4164-A67E-374084DACA71");
    public static final UUID LIFEBLOOD_HEALTH_MODIFIER_ID = UUID.fromString("B04DB09D-ED8A-4B82-B1EF-ADB425174925");

    public static IHeartAmountProvider heartProvider;

    public static int getActiveHearts(EntityPlayer player) {
        return Math.min((int) (player.getMaxHealth() / 2), 10);
    }

    public static int getInactiveHearts(EntityPlayer player) {
        return Math.max(10 - (int) (player.getMaxHealth() / 2), 0);
    }

    public static int getLifebloodHearts(EntityPlayer player) {
        IAttributeInstance maxHealthInstance = player.getAttributeMap()
                .getAttributeInstance(SharedMonsterAttributes.MAX_HEALTH);
        AttributeModifier modifier = maxHealthInstance.getModifier(HealthHelper.LIFEBLOOD_HEALTH_MODIFIER_ID);

        if (modifier != null) {
            return (int) (modifier.getAmount() / 2.0D);
        }

        return 0;
    }

    /**Returns true if successful*/
    public static boolean addActiveHearts(EntityPlayer player, int hearts) {
        IAttributeInstance maxHealthInstance = player.getAttributeMap()
                .getAttributeInstance(SharedMonsterAttributes.MAX_HEALTH);
        AttributeModifier modifier = maxHealthInstance.getModifier(HealthHelper.LIFEBLOOD_HEALTH_MODIFIER_ID);
        float newHealth = player.getMaxHealth() + (hearts * 2);
        double existingHearts = modifier != null ? modifier.getAmount() : 0.0D;

        if (newHealth <= heartProvider.getMaxHearts() * 2F && newHealth > 0.0F) {
            Multimap<String, AttributeModifier> multimap = HashMultimap.<String, AttributeModifier>create();
            modifier = new AttributeModifier(HealthHelper.LIFEBLOOD_HEALTH_MODIFIER_ID, "Lifeblood Health Modifier",
                    existingHearts + hearts * 2, 0);
            multimap.put(SharedMonsterAttributes.MAX_HEALTH.getName(), modifier);
            player.getAttributeMap().applyAttributeModifiers(multimap);
            return true;
        }

        return false;
    }

    public static int getStartingHearts(EnumDifficulty difficulty) {
        return heartProvider.getStartingHearts(difficulty);
    }

    public interface IHeartAmountProvider {
        int getMaxHearts();

        int getStartingHearts(EnumDifficulty difficulty);
    }
}