From 2f4bb5350f76ae64af9b869da3322c0726eed973 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


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 22999f0d2..5f13fbff3 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -94,4 +94,9 @@ 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 4f2fa59ac..8af52a61f 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.l(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 0e70cdf6f..8a61c2369 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -109,6 +109,7 @@ public abstract class Entity implements ICommandListener {
     public boolean noclip;
     public float R;
     protected Random random;
+    public boolean fromMobSpawner; // Paper
     public int ticksLived;
     public int fireTicks;
     public boolean inWater; // Spigot - protected -> public // PAIL
diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java
index 67f26bd62..6adb38de0 100644
--- a/src/main/java/net/minecraft/server/EntityInsentient.java
+++ b/src/main/java/net/minecraft/server/EntityInsentient.java
@@ -44,6 +44,7 @@ public abstract class EntityInsentient extends EntityLiving {
     private boolean bE;
     private Entity leashHolder;
     private NBTTagCompound bG;
+    public PathfinderGoalFloat goalFloat; // Paper
 
     public EntityInsentient(World world) {
         super(world);
@@ -638,6 +639,17 @@ public abstract class EntityInsentient extends EntityLiving {
         this.world.methodProfiler.a("checkDespawn");
         this.L();
         this.world.methodProfiler.b();
+        // Paper start - Re-add so we can allow them to float in water
+        if (this.fromMobSpawner) {
+            // Paper start - Allow nerfed mobs to jump and float
+            if (goalFloat != null) {
+                if (goalFloat.validConditions()) goalFloat.update();
+                this.getControllerJump().jumpIfSet();
+            }
+            // Paper end
+            return;
+        }
+        // Spigot End
         this.world.methodProfiler.a("sensing");
         this.bw.a();
         this.world.methodProfiler.b();
diff --git a/src/main/java/net/minecraft/server/PathfinderGoalFloat.java b/src/main/java/net/minecraft/server/PathfinderGoalFloat.java
index b3b303b3b..fc8be86fd 100644
--- a/src/main/java/net/minecraft/server/PathfinderGoalFloat.java
+++ b/src/main/java/net/minecraft/server/PathfinderGoalFloat.java
@@ -6,6 +6,7 @@ public class PathfinderGoalFloat extends PathfinderGoal {
 
     public PathfinderGoalFloat(EntityInsentient entityinsentient) {
         this.a = entityinsentient;
+        if (entityinsentient.fromMobSpawner && entityinsentient.getWorld().paperConfig.nerfedMobsShouldJump) entityinsentient.goalFloat = this; // Paper
         this.a(4);
         if (entityinsentient.getNavigation() instanceof Navigation) {
             ((Navigation) entityinsentient.getNavigation()).c(true);
@@ -15,10 +16,12 @@ public class PathfinderGoalFloat extends PathfinderGoal {
 
     }
 
+    public boolean validConditions() { return this.a(); } // Paper - OBFHELPER
     public boolean a() {
         return this.a.isInWater() || this.a.au();
     }
 
+    public void update() { this.e(); } // Paper - OBFHELPER
     public void e() {
         if (this.a.getRandom().nextFloat() < 0.8F) {
             this.a.getControllerJump().a();
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
index 825ca9346..2f409fe1e 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
@@ -557,7 +557,7 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
 
     @Override
     public boolean hasAI() {
-        return (this.getHandle() instanceof EntityInsentient) ? !((EntityInsentient) this.getHandle()).isNoAI(): false;
+        return this.getHandle() instanceof EntityInsentient && (!((EntityInsentient) this.getHandle()).isNoAI() || this.getHandle().getWorld().spigotConfig.nerfSpawnerMobs && ((EntityInsentient) this.getHandle()).fromMobSpawner); // Paper
     }
 
     @Override
-- 
2.13.0.windows.1