From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
Date: Thu, 20 Aug 2020 17:38:12 -0700
Subject: [PATCH] Customizable wither health and healing

Adds the ability to customize the health of the wither, as well as the amount that it heals, and how often.

diff --git a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
index 6f7ef64612d6229179545d56093efdf58a2d7978..b395d5c85f26ca4252d3f8f886b2ee5a7892af5f 100644
--- a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
+++ b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
@@ -518,8 +518,10 @@ public class WitherBoss extends Monster implements PowerableMob, RangedAttackMob
                 }
             }
 
-            if (this.tickCount % 20 == 0) {
-                this.heal(1.0F, EntityRegainHealthEvent.RegainReason.REGEN); // CraftBukkit
+            // Purpur start - customizable heal rate and amount
+            if (this.tickCount % level().purpurConfig.witherHealthRegenDelay == 0) {
+                this.heal(level().purpurConfig.witherHealthRegenAmount, EntityRegainHealthEvent.RegainReason.REGEN); // CraftBukkit
+                // Purpur end
             }
 
             this.bossEvent.setProgress(this.getHealth() / this.getMaxHealth());
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index 300c3d8a8fc34e95e9ad620aa603e66aa6847ae2..32b2444c0e96d4ba53693764a4caf0b596ed947f 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -1721,6 +1721,8 @@ public class PurpurWorldConfig {
     public boolean witherControllable = true;
     public double witherMaxY = 320D;
     public double witherMaxHealth = 300.0D;
+    public float witherHealthRegenAmount = 1.0f;
+    public int witherHealthRegenDelay = 20;
     private void witherSettings() {
         witherRidable = getBoolean("mobs.wither.ridable", witherRidable);
         witherRidableInWater = getBoolean("mobs.wither.ridable-in-water", witherRidableInWater);
@@ -1736,6 +1738,8 @@ public class PurpurWorldConfig {
             set("mobs.wither.attributes.max_health", oldValue);
         }
         witherMaxHealth = getDouble("mobs.wither.attributes.max_health", witherMaxHealth);
+        witherHealthRegenAmount = (float) getDouble("mobs.wither.health-regen-amount", witherHealthRegenAmount);
+        witherHealthRegenDelay = getInt("mobs.wither.health-regen-delay", witherHealthRegenDelay);
     }
 
     public boolean witherSkeletonRidable = false;