Paper/Spigot-Server-Patches/0047-Be-a-bit-more-informative-in-maxHealth-exception.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: kashike <kashike@vq.lc>
Date: Thu, 3 Mar 2016 02:18:39 -0600
Subject: [PATCH] Be a bit more informative in maxHealth exception


diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
index 6146db18416785a06f86a3118329b33adde9c5f8..966d23add13a3139adead8f8969c0a4ff34929c6 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
@@ -106,7 +106,10 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
     public void setHealth(double health) {
         health = (float) health;
         if ((health < 0) || (health > getMaxHealth())) {
-            throw new IllegalArgumentException("Health must be between 0 and " + getMaxHealth() + "(" + health + ")");
+            // Paper - Be more informative
+            throw new IllegalArgumentException("Health must be between 0 and " + getMaxHealth() + ", but was " + health
+                    + ". (attribute base value: " + this.getHandle().getAttributeInstance(GenericAttributes.MAX_HEALTH).getBaseValue()
+                    + (this instanceof CraftPlayer ? ", player: " + this.getName() + ')' : ')'));
         }
 
         getHandle().setHealth((float) health);