From 0000000000000000000000000000000000000000 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 78948c42b13194005bdbbbc69c2b7ae0732a78c5..b41e7922dd96c3358eb849ab39982a75736e3476 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -97,4 +97,9 @@ 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/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 0b63d81ecbcb56bf3dc25661cc2b219cd8c25592..018792503e5d18470ad17b9f4b4524d5dfba31e9 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1264,6 +1264,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
         return this.isInWater() || this.isInRain();
     }
 
+    @Deprecated public final boolean isInWaterOrRainOrBubble() { return isInWaterRainOrBubble(); } // Paper - OBFHELPER
     public boolean isInWaterRainOrBubble() {
         return this.isInWater() || this.isInRain() || this.isInBubbleColumn();
     }
diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index e91932d25e7b5d4a95e485bfa8b70632e0641b0a..1456dd2ef7ff28701555f4ac4b7645794ccee640 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -103,6 +103,7 @@ public abstract class Mob extends LivingEntity {
     private final BodyRotationControl bodyRotationControl;
     protected PathNavigation navigation;
     public GoalSelector goalSelector;
+    @Nullable public net.minecraft.world.entity.ai.goal.FloatGoal goalFloat; // Paper
     public GoalSelector targetSelector;
     private LivingEntity target;
     private final Sensing sensing;
@@ -794,7 +795,17 @@ public abstract class Mob extends LivingEntity {
     @Override
     protected final void serverAiStep() {
         ++this.noActionTime;
-        if (!this.aware) return; // CraftBukkit
+        if (!this.aware) { // Paper start - Allow nerfed mobs to jump, float and take water damage
+            if (goalFloat != null) {
+                if (goalFloat.validConditions()) goalFloat.tick();
+                this.getJumpControl().tick();
+            }
+            if ((this instanceof net.minecraft.world.entity.monster.Blaze || this instanceof net.minecraft.world.entity.monster.EnderMan) && isInWaterRainOrBubble()) {
+                hurt(DamageSource.DROWN, 1.0F);
+            }
+            return;
+        }
+        // Paper end
         this.level.getProfiler().push("sensing");
         this.sensing.tick();
         this.level.getProfiler().pop();
diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/FloatGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/FloatGoal.java
index 54085b104547f2fe7c08ff8aa4839b1230877bca..730788a1ceba4390d2638e22c6409ab86f6351e6 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/FloatGoal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/FloatGoal.java
@@ -9,10 +9,12 @@ public class FloatGoal extends Goal {
 
     public FloatGoal(Mob mob) {
         this.mob = mob;
+        if (mob.getCommandSenderWorld().paperConfig.nerfedMobsShouldJump) mob.goalFloat = this; // Paper
         this.setFlags(EnumSet.of(Goal.Flag.JUMP));
         mob.getNavigation().setCanFloat(true);
     }
 
+    @Deprecated public final boolean validConditions() { return this.canUse(); } // Paper - OBFHELPER
     @Override
     public boolean canUse() {
         return this.mob.isInWater() && this.mob.getFluidHeight(FluidTags.WATER) > this.mob.getFluidJumpThreshold() || this.mob.isInLava();