From d1cf5f168a9ffaf22b7d5e070e2800f33794a995 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Tue, 1 Mar 2016 13:24:16 -0600
Subject: [PATCH] Allow nerfed mobs to jump and take water damage


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 7d9976ce6..6d6a68cb1 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -92,4 +92,9 @@ public class PaperWorldConfig {
         fishingMaxTicks = getInt("fishing-time-range.MaximumTicks", 600);
         log("Fishing time ranges are between " + fishingMinTicks +" and " + fishingMaxTicks + " ticks");
     }
+
+    public boolean nerfedMobsShouldJump;
+    private void nerfedMobsShouldJump() {
+        nerfedMobsShouldJump = getBoolean("spawner-nerfed-mobs-should-jump", false);
+    }
 }
diff --git a/src/main/java/net/minecraft/server/ControllerJump.java b/src/main/java/net/minecraft/server/ControllerJump.java
index 2e869004c..8a6856e0f 100644
--- a/src/main/java/net/minecraft/server/ControllerJump.java
+++ b/src/main/java/net/minecraft/server/ControllerJump.java
@@ -13,6 +13,7 @@ public class ControllerJump {
         this.a = true;
     }
 
+    public void jumpIfSet() { this.b(); } // Paper - OBFHELPER
     public void b() {
         this.b.setJumping(this.a);
         this.a = false;
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 5635192f7..8a58afd1c 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -1104,6 +1104,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
         return this.isInWater() || this.isInRain();
     }
 
+    public boolean isInWaterOrRainOrBubble() { return ay(); } // Paper - OBFHELPER
     public boolean ay() {
         return this.isInWater() || this.isInRain() || this.l();
     }
diff --git a/src/main/java/net/minecraft/server/EntityEnderman.java b/src/main/java/net/minecraft/server/EntityEnderman.java
index 1cc66108d..538c2169c 100644
--- a/src/main/java/net/minecraft/server/EntityEnderman.java
+++ b/src/main/java/net/minecraft/server/EntityEnderman.java
@@ -171,7 +171,7 @@ public class EntityEnderman extends EntityMonster {
     @Override
     protected void mobTick() {
         if (this.ay()) {
-            this.damageEntity(DamageSource.DROWN, 1.0F);
+            this.damageEntity(DamageSource.DROWN, 1.0F); // Paper - copied in patch 13 (allow nerfed mobs to jump, float and take water damage)
         }
 
         if (this.world.isDay() && this.ticksLived >= this.bA + 600) {
diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java
index 7ee5eb987..68ce38d66 100644
--- a/src/main/java/net/minecraft/server/EntityInsentient.java
+++ b/src/main/java/net/minecraft/server/EntityInsentient.java
@@ -32,6 +32,7 @@ public abstract class EntityInsentient extends EntityLiving {
     private final EntityAIBodyControl c;
     protected NavigationAbstract navigation;
     public PathfinderGoalSelector goalSelector;
+    @Nullable public PathfinderGoalFloat goalFloat; // Paper
     public PathfinderGoalSelector targetSelector;
     private EntityLiving goalTarget;
     private final EntitySenses bw;
@@ -643,6 +644,15 @@ public abstract class EntityInsentient extends EntityLiving {
         // Spigot Start
         if ( this.fromMobSpawner )
         {
+            // Paper start - Allow nerfed mobs to jump, float and take water damage
+            if (goalFloat != null) {
+                if (goalFloat.validConditions()) goalFloat.update();
+                this.getControllerJump().jumpIfSet();
+            }
+            if ((this instanceof EntityBlaze || this instanceof EntityEnderman) && isInWaterOrRainOrBubble()) {
+                damageEntity(DamageSource.DROWN, 1.0F);
+            }
+            // Paper end
             return;
         }
         // Spigot End
diff --git a/src/main/java/net/minecraft/server/PathfinderGoalFloat.java b/src/main/java/net/minecraft/server/PathfinderGoalFloat.java
index 0f0dc7277..43908b040 100644
--- a/src/main/java/net/minecraft/server/PathfinderGoalFloat.java
+++ b/src/main/java/net/minecraft/server/PathfinderGoalFloat.java
@@ -8,10 +8,12 @@ public class PathfinderGoalFloat extends PathfinderGoal {
 
     public PathfinderGoalFloat(EntityInsentient entityinsentient) {
         this.a = entityinsentient;
+        if (entityinsentient.getWorld().paperConfig.nerfedMobsShouldJump) entityinsentient.goalFloat = this; // Paper
         this.a(EnumSet.of(PathfinderGoal.Type.JUMP));
         entityinsentient.getNavigation().d(true);
     }
 
+    public final boolean validConditions() { return this.a(); } // Paper - OBFHELPER
     @Override
     public boolean a() {
         double d0 = (double) this.a.getHeadHeight() < 0.4D ? 0.2D : 0.4D;
@@ -19,6 +21,7 @@ public class PathfinderGoalFloat extends PathfinderGoal {
         return this.a.isInWater() && this.a.co() > d0 || this.a.aH();
     }
 
+    public void update() { this.e(); } // Paper - OBFHELPER
     @Override
     public void e() {
         if (this.a.getRandom().nextFloat() < 0.8F) {
-- 
2.25.0