Add amulet of vitality

src/main/java/electroblob/wizardry/spell/Heal.java

@@ -1,7 +1,10 @@
 package electroblob.wizardry.spell;
 
+import electroblob.wizardry.item.ItemArtefact;
+import electroblob.wizardry.registry.WizardryItems;
 import electroblob.wizardry.util.SpellModifiers;
 import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.entity.player.EntityPlayer;
 
 public class Heal extends SpellBuff {
 
@@ -15,11 +18,31 @@ public class Heal extends SpellBuff {
 	protected boolean applyEffects(EntityLivingBase caster, SpellModifiers modifiers){
 		
 		if(caster.getHealth() < caster.getMaxHealth() && caster.getHealth() > 0){
-			caster.heal(getProperty(HEALTH).floatValue() * modifiers.get(SpellModifiers.POTENCY));
+			heal(caster, getProperty(HEALTH).floatValue() * modifiers.get(SpellModifiers.POTENCY));
 			return true;
 		}
 		
 		return false;
 	}
 
+	/**
+	 * Heals the given entity by the given amount, accounting for special behaviour from artefacts. This does not check
+	 * whether the entity is already on full health or not.
+	 * @param entity The entity to heal
+	 * @param health The number of half-hearts to heal
+	 */
+	public static void heal(EntityLivingBase entity, float health){
+
+		float excessHealth = entity.getHealth() + health - entity.getMaxHealth();
+
+		entity.heal(health);
+
+		// If the player is able to heal, they can't possibly have absorption hearts, so no need to check!
+		if(excessHealth > 0 && entity instanceof EntityPlayer
+				&& ItemArtefact.isArtefactActive((EntityPlayer)entity, WizardryItems.amulet_absorption)){
+			entity.setAbsorptionAmount(excessHealth);
+		}
+
+	}
+
 }