Added reasons for entities regaining health.

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

@@ -13,6 +13,7 @@ import org.bukkit.event.entity.EntityTargetEvent;
 import org.bukkit.event.player.PlayerBedEnterEvent;
 import org.bukkit.event.player.PlayerBedLeaveEvent;
 import org.bukkit.event.player.PlayerDropItemEvent;
+import org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason;
 // CraftBukkit end
 
 public abstract class EntityHuman extends EntityLiving {
@@ -175,7 +176,7 @@ public abstract class EntityHuman extends EntityLiving {
     public void v() {
         // CraftBukkit - spawnMonsters -> allowMonsters
         if (!this.world.allowMonsters && this.health < 20 && this.ticksLived % 20 * 12 == 0) {
-            this.b(1);
+            this.b(1, RegainReason.REGEN);
         }
 
         this.inventory.f();

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

@@ -9,6 +9,7 @@ import org.bukkit.event.entity.EntityDamageByBlockEvent;
 import org.bukkit.event.entity.EntityDamageEvent;
 import org.bukkit.event.entity.EntityDeathEvent;
 import org.bukkit.event.entity.EntityRegainHealthEvent;
+import org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason;
 // CraftBukkit end
 
 public abstract class EntityLiving extends Entity {
@@ -313,10 +314,14 @@ public abstract class EntityLiving extends Entity {
         super.b(f, f1);
     }
 
+    // CraftBukkit start - delegate so we can handle providing a reason for health being regained
     public void b(int i) {
-        // CraftBukkit start - Added event
+        b(i, RegainReason.CUSTOM);
+    }
+
+    public void b(int i, RegainReason regainReason) {
         if (this.health > 0) {
-            EntityRegainHealthEvent event = new EntityRegainHealthEvent(this.getBukkitEntity(), i);
+            EntityRegainHealthEvent event = new EntityRegainHealthEvent(this.getBukkitEntity(), i, regainReason);
             this.world.getServer().getPluginManager().callEvent(event);
 
             if (!event.isCancelled()) {

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

@@ -10,6 +10,7 @@ import org.bukkit.Bukkit;
 import org.bukkit.craftbukkit.CraftWorld;
 import org.bukkit.craftbukkit.inventory.CraftItemStack;
 import org.bukkit.event.entity.EntityDeathEvent;
+import org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason;
 // CraftBukkit end
 
 public class EntityPlayer extends EntityHuman implements ICrafting {
@@ -184,7 +185,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
     }
 
     public void b(int i) {
-        super.b(i);
+        super.b(i, RegainReason.EATING);
     }
 
     public void a(boolean flag) {

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

@@ -8,6 +8,7 @@ import org.bukkit.craftbukkit.entity.CraftEntity;
 import org.bukkit.craftbukkit.event.CraftEventFactory;
 import org.bukkit.event.entity.EntityDamageByEntityEvent;
 import org.bukkit.event.entity.EntityDamageEvent;
+import org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason;
 import org.bukkit.event.entity.EntityTargetEvent;
 // CraftBukkit end
 
@@ -385,7 +386,7 @@ public class EntityWolf extends EntityAnimal {
                         entityhuman.inventory.setItem(entityhuman.inventory.itemInHandIndex, (ItemStack) null);
                     }
 
-                    this.b(((ItemFood) Item.PORK).k());
+                    this.b(((ItemFood) Item.PORK).k(), RegainReason.EATING);
                     return true;
                 }
             }