DamageEventHandler.java

package chbachman.armour.handler;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.ChatComponentText;
import net.minecraftforge.event.entity.living.LivingEvent.LivingUpdateEvent;
import net.minecraftforge.event.entity.living.LivingHurtEvent;

import com.badlogic.gdx.utils.ObjectFloatMap;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;

/**
 * This class is used during development to detail the amount of damage dealt
 * with each hit.
 * 
 * @author CBachman
 *
 */
public class DamageEventHandler {

    ObjectFloatMap<EntityPlayer> otherMap = new ObjectFloatMap<EntityPlayer>();

    @SubscribeEvent
    public void onEntityDamaged(LivingHurtEvent e) {
        if (e.entityLiving instanceof EntityPlayer) {
            EntityPlayer player = (EntityPlayer) e.entityLiving;
            player.addChatMessage(new ChatComponentText(String.format("Damage is %s.", e.ammount)));
            otherMap.put(player, e.ammount);
        }
    }

    ObjectFloatMap<EntityPlayer> map = new ObjectFloatMap<EntityPlayer>();

    @SubscribeEvent
    public void onEntityUpdate(LivingUpdateEvent e) {
        if (e.entityLiving instanceof EntityPlayer) {
            EntityPlayer player = (EntityPlayer) e.entityLiving;

            if (player == null) {
                return;
            }

            float health = player.getHealth();

            if (map.containsKey(player)) {
                map.put(player, health);
            }

            float f = map.get(player, 0);

            if (f == health) {
                return;
            } else {
                player.addChatMessage(new ChatComponentText(String.format("Damage is %s", f - health)));
                map.put(player, health);

                if (!otherMap.containsKey(player)) {
                    return;
                }

                player.addChatMessage(new ChatComponentText(String.format("Percentage is %s", (1 - ((f - health) / otherMap.get(player, 0))) * 100)));

            }
        }
    }
}