Implemented getKiller in LivingEntity

src/main/java/net/minecraft/server/EntityLiving.java

@@ -56,7 +56,7 @@ public abstract class EntityLiving extends Entity {
     public float aC;
     public float aD;
     public float aE;
-    protected EntityHuman aF = null;
+    public EntityHuman aF = null; // CraftBukkit - prot to pub - "killer"
     protected int aG = 0;
     public int aH = 0;
     public int aI = 0;

src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java

@@ -15,6 +15,7 @@ import org.bukkit.block.Block;
 import org.bukkit.entity.Arrow;
 import org.bukkit.entity.Egg;
 import org.bukkit.entity.LivingEntity;
+import org.bukkit.entity.Player;
 import org.bukkit.entity.Snowball;
 import org.bukkit.entity.Vehicle;
 import org.bukkit.util.BlockIterator;
@@ -24,6 +25,7 @@ import java.util.HashSet;
 import java.util.ArrayList;
 import java.util.Iterator;
 import net.minecraft.server.DamageSource;
+import net.minecraft.server.EntityHuman;
 import org.bukkit.entity.HumanEntity;
 
 public class CraftLivingEntity extends CraftEntity implements LivingEntity {
@@ -223,4 +225,8 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
     public String toString() {
         return "CraftLivingEntity{" + "id=" + getEntityId() + '}';
     }
+
+    public Player getKiller() {
+        return getHandle().aF == null ? null : (Player)getHandle().aF.getBukkitEntity();
+    }
 }