Paper/patches/api/0299-Missing-Entity-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Fri, 28 May 2021 21:06:59 -0400
Subject: [PATCH] Missing Entity API

Co-authored-by: Nassim Jahnke <nassim@njahnke.dev>
Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
Co-authored-by: William Blake Galbreath <blake.galbreath@gmail.com>
Co-authored-by: SoSeDiK <mrsosedik@gmail.com>
Co-authored-by: booky10 <boooky10@gmail.com>
Co-authored-by: Amin <amin.haddou@frg.wwschool.de>

diff --git a/src/main/java/io/papermc/paper/entity/SchoolableFish.java b/src/main/java/io/papermc/paper/entity/SchoolableFish.java
new file mode 100644
index 0000000000000000000000000000000000000000..39ad7d283609d7e427a2ab35b6fad839e032fe92
--- /dev/null
+++ b/src/main/java/io/papermc/paper/entity/SchoolableFish.java
@@ -0,0 +1,47 @@
+package io.papermc.paper.entity;
+
+import org.bukkit.entity.Fish;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Represents a fish that can school with other fish.
+ */
+public interface SchoolableFish extends Fish {
+
+    /**
+     * Forces this fish to follow the given fish.
+     *
+     * @param leader fish to follow
+     */
+    void startFollowing(@NotNull SchoolableFish leader);
+
+    /**
+     * Causes the fish to stop following their current
+     * leader.
+     */
+    void stopFollowing();
+
+    /**
+     * Gets the amount of fish currently following this fish.
+     *
+     * @return school size
+     */
+    int getSchoolSize();
+
+    /**
+     * Gets the maximum number of fish that will naturally follow this fish.
+     *
+     * @return max school size
+     */
+    int getMaxSchoolSize();
+
+    /**
+     * Gets the fish that this entity is currently following.
+     *
+     * @return following fish
+     */
+    @Nullable
+    SchoolableFish getSchoolLeader();
+
+}
diff --git a/src/main/java/io/papermc/paper/potion/SuspiciousEffectEntry.java b/src/main/java/io/papermc/paper/potion/SuspiciousEffectEntry.java
new file mode 100644
index 0000000000000000000000000000000000000000..c8446678e39e777bd2c9992d5c577f4c7606ce15
--- /dev/null
+++ b/src/main/java/io/papermc/paper/potion/SuspiciousEffectEntry.java
@@ -0,0 +1,37 @@
+package io.papermc.paper.potion;
+
+import org.bukkit.potion.PotionEffectType;
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Represents a {@link PotionEffectType} paired with a duration.
+ */
+public sealed interface SuspiciousEffectEntry permits SuspiciousEffectEntryImpl {
+
+    /**
+      * Gets the effect type.
+     *
+      * @return type
+      */
+    @NotNull PotionEffectType effect();
+
+    /**
+      * Gets the duration for this effect instance.
+      *
+      * @return duration (in ticks)
+      */
+    int duration();
+
+    /**
+     * Creates a new instance of SuspiciousEffectEntry.
+     *
+     * @param effectType effect type
+     * @param duration duration (in ticks)
+     * @return new instance of an entry
+     */
+    @Contract(value = "_, _ -> new", pure = true)
+    static @NotNull SuspiciousEffectEntry create(final @NotNull PotionEffectType effectType, final int duration) {
+        return new SuspiciousEffectEntryImpl(effectType, duration);
+    }
+}
diff --git a/src/main/java/io/papermc/paper/potion/SuspiciousEffectEntryImpl.java b/src/main/java/io/papermc/paper/potion/SuspiciousEffectEntryImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..e5002ccaef9ea7a9db94296ad0d66cdae050cdd1
--- /dev/null
+++ b/src/main/java/io/papermc/paper/potion/SuspiciousEffectEntryImpl.java
@@ -0,0 +1,7 @@
+package io.papermc.paper.potion;
+
+import org.bukkit.potion.PotionEffectType;
+import org.jetbrains.annotations.NotNull;
+
+record SuspiciousEffectEntryImpl(@NotNull PotionEffectType effect, int duration) implements SuspiciousEffectEntry {
+}
diff --git a/src/main/java/org/bukkit/entity/AbstractHorse.java b/src/main/java/org/bukkit/entity/AbstractHorse.java
index 0d88dce9978243a1f995c5fb448c5d71b01136eb..8b1048c94dffd058eb9fd9144f7f59fc9bd219ad 100644
--- a/src/main/java/org/bukkit/entity/AbstractHorse.java
+++ b/src/main/java/org/bukkit/entity/AbstractHorse.java
@@ -106,17 +106,71 @@ public interface AbstractHorse extends Vehicle, InventoryHolder, Tameable {
      * Gets whether the horse is currently grazing hay.
      *
      * @return true if eating hay
+     * @deprecated use {@link #isEatingGrass()}, this name is incorrect
      */
+    @Deprecated // Paper - Horse API
     boolean isEatingHaystack();
 
     /**
      * Sets whether the horse is grazing hay.
      *
      * @param eatingHaystack new hay grazing status
+     * @deprecated use {@link #setEatingGrass(boolean)}, this name is incorrect
      */
+    @Deprecated // Paper - Horse API
     void setEatingHaystack(boolean eatingHaystack);
 
     @NotNull
     @Override
     public AbstractHorseInventory getInventory();
+
+    // Paper start - Horse API
+    /**
+     * Gets if a horse is in their eating grass animation.
+     *
+     * @return eating grass animation is active
+     */
+    public boolean isEatingGrass();
+
+    /**
+     * Sets if a horse is in their eating grass animation.
+     *
+     * <p>When true, the horse will lower its neck.</p>
+     *
+     * @param eating eating grass animation is active
+     */
+    public void setEatingGrass(boolean eating);
+
+    /**
+     * Gets if a horse is in their rearing animation.
+     *
+     * @return rearing animation is active
+     */
+    public boolean isRearing();
+
+    /**
+     * Sets if a horse is in their rearing animation.
+     *
+     * <p>When true, the horse will stand on its hind legs.</p>
+     *
+     * @param rearing rearing animation is active
+     */
+    public void setRearing(boolean rearing);
+
+    /**
+     * Gets if a horse is in their eating animation.
+     *
+     * @return eating animation is active
+     */
+    public boolean isEating();
+
+    /**
+     * Sets if a horse is in their eating animation.
+     *
+     * <p>When true, the horse will bob its head.</p>
+     *
+     * @param eating eating animation is active
+     */
+    public void setEating(boolean eating);
+    // Paper end - Horse API
 }
diff --git a/src/main/java/org/bukkit/entity/AreaEffectCloud.java b/src/main/java/org/bukkit/entity/AreaEffectCloud.java
index 8d6caae8ba11e1fe73cd5f88657eaac5f66c9d3d..fc59d6d4c2d43b09aef3a6f30b73d26280e831fa 100644
--- a/src/main/java/org/bukkit/entity/AreaEffectCloud.java
+++ b/src/main/java/org/bukkit/entity/AreaEffectCloud.java
@@ -259,4 +259,20 @@ public interface AreaEffectCloud extends Entity {
      * @param source the {@link ProjectileSource} that threw the LingeringPotion
      */
     public void setSource(@Nullable ProjectileSource source);
+
+    // Paper start - owner API
+    /**
+     * Get the entity UUID for the owner of this area effect cloud.
+     *
+     * @return the entity owner uuid or null
+     */
+    @Nullable java.util.UUID getOwnerUniqueId();
+
+    /**
+     * Sets the entity UUID for the owner of this area effect cloud.
+     *
+     * @param ownerUuid the entity owner uuid or null to clear
+     */
+    void setOwnerUniqueId(@Nullable java.util.UUID ownerUuid);
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Bat.java b/src/main/java/org/bukkit/entity/Bat.java
index bd73f22ef7e79e1ade69e860e7ae1d3dcd6fc858..b9f8b14d90a758672642222675d2f5664d4f67b4 100644
--- a/src/main/java/org/bukkit/entity/Bat.java
+++ b/src/main/java/org/bukkit/entity/Bat.java
@@ -24,4 +24,23 @@ public interface Bat extends Ambient {
      * @param state the new state
      */
     void setAwake(boolean state);
+
+    // Paper start
+    /**
+     * Gets the location that this bat is currently trying to move towards.
+     *
+     * @return target location, or null if it's going to find a new location
+     */
+    @org.jetbrains.annotations.Nullable
+    org.bukkit.Location getTargetLocation();
+
+    /**
+     * Sets the location that this bat is currently trying to move towards.
+     * <p>
+     * This can be set to null to cause the bat to recalculate its target location
+     *
+     * @param location location to move towards (world is ignored, will always use the entity's world)
+     */
+    void setTargetLocation(@org.jetbrains.annotations.Nullable org.bukkit.Location location);
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Bee.java b/src/main/java/org/bukkit/entity/Bee.java
index adb20a9abba33c32d553f620fa82b27dff64ab5f..1f6702b0de00b87dbed7f6d93e911655e8667b0b 100644
--- a/src/main/java/org/bukkit/entity/Bee.java
+++ b/src/main/java/org/bukkit/entity/Bee.java
@@ -93,4 +93,56 @@ public interface Bee extends Animals {
      * @param ticks Ticks the bee cannot enter a hive for
      */
     void setCannotEnterHiveTicks(int ticks);
+
+    // Paper start
+    /**
+     * Sets the override for if the bee is currently rolling.
+     *
+     * @param rolling is rolling, or unset for vanilla behavior
+     */
+    void setRollingOverride(@org.jetbrains.annotations.NotNull net.kyori.adventure.util.TriState rolling);
+
+    /**
+     * Gets the plugin set override for if the bee is currently rolling.
+     *
+     * @return plugin set rolling override
+     */
+    @org.jetbrains.annotations.NotNull
+    net.kyori.adventure.util.TriState getRollingOverride();
+
+    /**
+     * Gets if the bee is currently rolling.
+     *
+     * @return is rolling
+     */
+    boolean isRolling();
+
+    /**
+     * Sets how many crops this bee has grown since it last
+     * pollinated.
+     * @param crops number of crops
+     */
+    void setCropsGrownSincePollination(int crops);
+
+    /**
+     * Gets how many crops this bee has grown since it last
+     * pollinated.
+     * @return number of crops
+     */
+    int getCropsGrownSincePollination();
+
+    /**
+     * Sets how many ticks this bee has gone without pollinating.
+     *
+     * @param ticks number of ticks
+     */
+    void setTicksSincePollination(int ticks);
+
+    /**
+     * Gets how many ticks this bee has gone without pollinating
+     *
+     * @return number of ticks
+     */
+    int getTicksSincePollination();
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Cat.java b/src/main/java/org/bukkit/entity/Cat.java
index d1327761a4b95eba97877f1991fc19b298b48eaf..0534fbc228f64cf3b361ab097d9b88212bdb0f36 100644
--- a/src/main/java/org/bukkit/entity/Cat.java
+++ b/src/main/java/org/bukkit/entity/Cat.java
@@ -68,4 +68,36 @@ public interface Cat extends Tameable, Sittable {
             return key;
         }
     }
+
+    // Paper start - More cat api
+    /**
+     * Sets if the cat is lying down.
+     * This is visual and does not affect the behaviour of the cat.
+     *
+     * @param lyingDown whether the cat should lie down
+     */
+    public void setLyingDown(boolean lyingDown);
+
+    /**
+     * Gets if the cat is lying down.
+     *
+     * @return whether the cat is lying down
+     */
+    public boolean isLyingDown();
+
+    /**
+     * Sets if the cat has its head up.
+     * This is visual and does not affect the behaviour of the cat.
+     *
+     * @param headUp head is up
+     */
+    public void setHeadUp(boolean headUp);
+
+    /**
+     * Gets if the cat has its head up.
+     *
+     * @return head is up
+     */
+    public boolean isHeadUp();
+    // Paper end - More cat api
 }
diff --git a/src/main/java/org/bukkit/entity/Chicken.java b/src/main/java/org/bukkit/entity/Chicken.java
index cb3ec6ef6c38c2071cb6ad91da094fca2de8d5c6..b4c1a262602d4ca5ffc9fcc21d6aa79af8c040a7 100644
--- a/src/main/java/org/bukkit/entity/Chicken.java
+++ b/src/main/java/org/bukkit/entity/Chicken.java
@@ -3,4 +3,35 @@ package org.bukkit.entity;
 /**
  * Represents a Chicken.
  */
-public interface Chicken extends Animals {}
+// Paper start
+public interface Chicken extends Animals {
+
+    /**
+     * Gets if this chicken was spawned as a chicken jockey.
+     *
+     * @return is chicken jockey
+     */
+    boolean isChickenJockey();
+
+    /**
+     * Sets if this chicken was spawned as a chicken jockey.
+     *
+     * @param isChickenJockey is chicken jockey
+     */
+    void setIsChickenJockey(boolean isChickenJockey);
+
+    /**
+     * Gets the number of ticks till this chicken lays an egg.
+     *
+     * @return ticks till the chicken lays an egg
+     */
+    int getEggLayTime();
+
+    /**
+     * Sets the number of ticks till this chicken lays an egg.
+     *
+     * @param eggLayTime ticks till the chicken lays an egg
+     */
+    void setEggLayTime(int eggLayTime);
+}
+// Paper end
diff --git a/src/main/java/org/bukkit/entity/Cod.java b/src/main/java/org/bukkit/entity/Cod.java
index 191ce6c0e32ab3d05b1376e0fa56d1292c2d442c..8de09075e14a08a6c68f9c24e8960cc04a018036 100644
--- a/src/main/java/org/bukkit/entity/Cod.java
+++ b/src/main/java/org/bukkit/entity/Cod.java
@@ -4,4 +4,4 @@ package org.bukkit.entity;
 /**
  * Represents a cod fish.
  */
-public interface Cod extends Fish { }
+public interface Cod extends io.papermc.paper.entity.SchoolableFish { } // Paper - Schooling Fish API
diff --git a/src/main/java/org/bukkit/entity/Enderman.java b/src/main/java/org/bukkit/entity/Enderman.java
index 58191017244f3949f6174fb108e3a245738a53c4..61672c6faf94aa497145aadd634bb10103c7b05a 100644
--- a/src/main/java/org/bukkit/entity/Enderman.java
+++ b/src/main/java/org/bukkit/entity/Enderman.java
@@ -86,4 +86,36 @@ public interface Enderman extends Monster {
      * @return true if the teleport succeeded.
      */
     public boolean teleportTowards(@NotNull Entity entity);
+
+    // Paper start
+    /**
+     * Returns whether the enderman is screaming/angry.
+     *
+     * @return whether the enderman is screaming
+     */
+    boolean isScreaming();
+
+    /**
+     * Sets whether the enderman is screaming/angry.
+     *
+     * @param screaming whether the enderman is screaming
+     */
+    void setScreaming(boolean screaming);
+
+    /**
+     * Returns whether the enderman has been stared at.
+     * If set to true, players will hear an ambient sound.
+     *
+     * @return whether the enderman has been stared at
+     */
+    boolean hasBeenStaredAt();
+
+    /**
+     * Sets whether the enderman has been stared at.
+     * If set to true, players will hear an ambient sound.
+     *
+     * @param hasBeenStaredAt whether the enderman has been stared at
+     */
+    void setHasBeenStaredAt(boolean hasBeenStaredAt);
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Endermite.java b/src/main/java/org/bukkit/entity/Endermite.java
index 9e7f42caab1204036f4203354c115fd40c6def92..138d2530de2410f4a9424dabd3e5ce0cd1c1dcd2 100644
--- a/src/main/java/org/bukkit/entity/Endermite.java
+++ b/src/main/java/org/bukkit/entity/Endermite.java
@@ -23,4 +23,22 @@ public interface Endermite extends Monster {
      */
     @Deprecated
     void setPlayerSpawned(boolean playerSpawned);
+    // Paper start
+    /**
+     * Sets how many ticks this endermite has been living for.
+     * If this value is greater than 2400, this endermite will despawn.
+     *
+     * @param ticks lifetime ticks
+     */
+    void setLifetimeTicks(int ticks);
+
+    /**
+     * Gets how long this endermite has been living for.
+     * This value will tick up while {@link LivingEntity#getRemoveWhenFarAway()} is false.
+     * If this value is greater than 2400, this endermite will despawn.
+     *
+     * @return lifetime ticks
+     */
+    int getLifetimeTicks();
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Fox.java b/src/main/java/org/bukkit/entity/Fox.java
index c61a473453f33f9d10c330fc46cfa9d52251fe49..473a7e36ad64f866d1d2e09e2ecb2e9881668faf 100644
--- a/src/main/java/org/bukkit/entity/Fox.java
+++ b/src/main/java/org/bukkit/entity/Fox.java
@@ -92,4 +92,55 @@ public interface Fox extends Animals, Sittable {
         RED,
         SNOW;
     }
+
+    // Paper start - Add more fox behavior API
+    /**
+     * Sets if the fox is interested.
+     *
+     * @param interested is interested
+     */
+    public void setInterested(boolean interested);
+
+    /**
+     * Gets if the fox is interested.
+     *
+     * @return fox is interested
+     */
+    public boolean isInterested();
+
+    /**
+     * Sets if the fox is leaping.
+     *
+     * @param leaping is leaping
+     */
+    public void setLeaping(boolean leaping);
+
+    /**
+     * Gets if the fox is leaping.
+     *
+     * @return fox is leaping
+     */
+    public boolean isLeaping();
+
+    /**
+     * Sets if the fox is defending.
+     *
+     * @param defending is defending
+     */
+    public void setDefending(boolean defending);
+
+    /**
+     * Gets if the fox is defending.
+     *
+     * @return fox is defending
+     */
+    public boolean isDefending();
+
+    /**
+     * Sets if the fox face planted.
+     *
+     * @param faceplanted face planted
+     */
+    public void setFaceplanted(boolean faceplanted);
+    // Paper end - Add more fox behavior API
 }
diff --git a/src/main/java/org/bukkit/entity/Ghast.java b/src/main/java/org/bukkit/entity/Ghast.java
index 6b3c9bef9a8a34ddc6ff42cf358541a2665bf5e3..9c618a27d590f186f29c5d9094fc565efd40ca49 100644
--- a/src/main/java/org/bukkit/entity/Ghast.java
+++ b/src/main/java/org/bukkit/entity/Ghast.java
@@ -18,4 +18,21 @@ public interface Ghast extends Flying, Enemy {
      * @param flag Whether the Ghast is charging
      */
     void setCharging(boolean flag);
+
+    // Paper start
+    /**
+     * Returns the explosion power of shot fireballs.
+     *
+     * @return explosion power of shot fireballs
+     */
+    int getExplosionPower();
+
+    /**
+     * Sets the explosion power of shot fireballs.
+     *
+     * @param explosionPower explosion power of shot fireballs
+     * @throws IllegalArgumentException if the explosion power is less than 0 or greater than 127
+     */
+    void setExplosionPower(int explosionPower);
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/LivingEntity.java b/src/main/java/org/bukkit/entity/LivingEntity.java
index b1fb059fc2249814c9e509c219da2aed84d34fe0..6e6b80843a8669b422f93e98343e1da9f8546ee7 100644
--- a/src/main/java/org/bukkit/entity/LivingEntity.java
+++ b/src/main/java/org/bukkit/entity/LivingEntity.java
@@ -1016,6 +1016,57 @@ public interface LivingEntity extends Attributable, Damageable, ProjectileSource
     void clearActiveItem();
     // Paper end
 
+    // Paper start
+    /**
+     * Retrieves the sideways movement direction of the entity.
+     * <p>
+     * The returned value ranges from -1 to 1, where:
+     * - Positive 1 represents movement to the left.
+     * - Negative 1 represents movement to the right.
+     * <p>
+     * Please note that for entities of type {@link Player}, this value is updated only when riding another entity.
+     * <p>
+     * This method specifically provides information about the entity's sideways movement, whereas {@link #getVelocity()} returns
+     * a vector representing the entity's overall current momentum.
+     *
+     * @return Sideways movement direction, ranging from -1 (right) to 1 (left).
+     */
+    float getSidewaysMovement();
+
+    /**
+     * Retrieves the upwards movement direction of the entity.
+     * <p>
+     * The returned value ranges from -1 to 1, where:
+     * - Positive 1 represents upward movement.
+     * - Negative 1 represents downward movement.
+     * <p>
+     * Please note that for entities of type {@link Player}, this value is never updated.
+     * <p>
+     * This method specifically provides information about the entity's vertical movement,
+     * whereas {@link #getVelocity()} returns a vector representing the entity's overall
+     * current momentum.
+     *
+     * @return Upwards movement direction, ranging from -1 (downward) to 1 (upward).
+     */
+    float getUpwardsMovement();
+
+    /**
+     * Retrieves the forwards movement direction of the entity.
+     * <p>
+     * The returned value ranges from -1 to 1, where:
+     * - Positive 1 represents movement forwards.
+     * - Negative 1 represents movement backwards.
+     * <p>
+     * Please note that for entities of type {@link Player}, this value is updated only when riding another entity.
+     * <p>
+     * This method specifically provides information about the entity's forward and backward movement,
+     * whereas {@link #getVelocity()} returns a vector representing the entity's overall current momentum.
+     *
+     * @return Forwards movement direction, ranging from -1 (backward) to 1 (forward).
+     */
+    float getForwardsMovement();
+    // Paper end
+
     /**
      * Get's remaining time a player needs to keep hands raised with an item to finish using it.
      * @return Remaining ticks to use the item
diff --git a/src/main/java/org/bukkit/entity/Llama.java b/src/main/java/org/bukkit/entity/Llama.java
index d23226ccb0f6c25028f000ce31346cd0a8898e6a..bc84b892cae5fe7019a3ad481e9da79956efa1fe 100644
--- a/src/main/java/org/bukkit/entity/Llama.java
+++ b/src/main/java/org/bukkit/entity/Llama.java
@@ -67,4 +67,56 @@ public interface Llama extends ChestedHorse, RangedEntity { // Paper
     @NotNull
     @Override
     LlamaInventory getInventory();
+
+    // Paper start
+    /**
+     * Checks if this llama is in a caravan.
+     * This means that this llama is currently following
+     * another llama.
+     *
+     * @return is in caravan
+     */
+    boolean inCaravan();
+
+    /**
+     * Joins a caravan, with the provided llama being the leader
+     * of the caravan.
+     * This llama will then follow the provided llama.
+     *
+     * @param llama head of caravan to join
+     */
+    void joinCaravan(@NotNull Llama llama);
+
+    /**
+     * Leaves the current caravan that they are in.
+     */
+    void leaveCaravan();
+
+    /**
+     * Get the llama that this llama is following.
+     * <p>
+     * Does not necessarily mean the leader of the entire caravan.
+     *
+     * @return the llama currently being followed
+     */
+    @org.jetbrains.annotations.Nullable
+    Llama getCaravanHead();
+
+    /**
+     * Checks if another llama is currently following behind
+     * this llama.
+     *
+     * @return true if being followed in the caravan
+     */
+    boolean hasCaravanTail();
+
+    /**
+     * Gets the llama that is currently following behind
+     * this llama.
+     *
+     * @return the llama following this llama, or null if none is following them
+     */
+    @org.jetbrains.annotations.Nullable
+    Llama getCaravanTail();
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Mob.java b/src/main/java/org/bukkit/entity/Mob.java
index 11b6d1aba7d1f6ae1f3c822193486f5a1478e105..709c8fc3dde786f45ff13d6ee6c405ffdc765282 100644
--- a/src/main/java/org/bukkit/entity/Mob.java
+++ b/src/main/java/org/bukkit/entity/Mob.java
@@ -162,4 +162,38 @@ public interface Mob extends LivingEntity, Lootable {
      */
     @Nullable
     public Sound getAmbientSound();
+
+    // Paper start
+    /**
+     * Some mobs will raise their arm(s) when aggressive:
+     * <ul>
+     *     <li>{@link Drowned}</li>
+     *     <li>{@link Piglin}</li>
+     *     <li>{@link Skeleton}</li>
+     *     <li>{@link Zombie}</li>
+     *     <li>{@link ZombieVillager}</li>
+     *     <li>{@link Illusioner}</li>
+     *     <li>{@link Vindicator}</li>
+     *     <li>{@link Panda}</li>
+     *     <li>{@link Pillager}</li>
+     *     <li>{@link PiglinBrute}</li>
+     * </ul>
+     * <p>
+     * Note: This doesn't always show the actual aggressive state as
+     * set by {@link #setAggressive(boolean)}. {@link Panda}'s are always
+     * aggressive if their combined {@link Panda.Gene} is {@link Panda.Gene#AGGRESSIVE}.
+     *
+     * @return wether the mob is aggressive or not
+     */
+    boolean isAggressive();
+
+    /**
+     * Some mobs will raise their arm(s) when aggressive,
+     * see {@link #isAggressive()} for full list.
+     *
+     * @param aggressive wether the mob should be aggressive or not
+     * @see #isAggressive()
+     */
+    void setAggressive(boolean aggressive);
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/MushroomCow.java b/src/main/java/org/bukkit/entity/MushroomCow.java
index cef1700834643fe28ed5737578d91ecefbe99e2f..794b7b4a870a0d289476074e3a3f46552604c954 100644
--- a/src/main/java/org/bukkit/entity/MushroomCow.java
+++ b/src/main/java/org/bukkit/entity/MushroomCow.java
@@ -95,4 +95,75 @@ public interface MushroomCow extends Cow {
          */
         BROWN;
     }
+    // Paper start
+    /**
+     * Gets how long the effect applied to stew
+     * from this mushroom cow is.
+     *
+     * @return duration of the effect (in ticks)
+     * @deprecated Mushroom cows can now hold multiple effects, use {@link #getStewEffects()}
+     */
+    @Deprecated(forRemoval = true)
+    @org.jetbrains.annotations.Contract("-> fail")
+    default int getStewEffectDuration() {
+        throw new UnsupportedOperationException("Mushroom cows can now hold multiple effects. Use #getStewEffects");
+    }
+
+    /**
+     * Sets how long the effect applied to stew
+     * from this mushroom cow is.
+     *
+     * @param duration duration of the effect (in ticks)
+     * @deprecated Mushroom cows can now hold multiple effects, use {@link #setStewEffects(java.util.List)}
+     */
+    @Deprecated(forRemoval = true)
+    @org.jetbrains.annotations.Contract("_ -> fail")
+    default void setStewEffectDuration(int duration) {
+        throw new UnsupportedOperationException("Mushroom cows can now hold multiple effects. Use #setStewEffects");
+    }
+
+    /**
+     * Gets the type of effect applied to stew
+     * from this mushroom cow is.
+     *
+     * @return effect type, or null if an effect is currently not set
+     * @deprecated Mushroom cows can now hold multiple effects, use {@link #getStewEffects()}
+     * @throws UnsupportedOperationException
+     */
+    @Deprecated(forRemoval = true)
+    @org.jetbrains.annotations.Contract("-> fail")
+    default org.bukkit.potion.PotionEffectType getStewEffectType() {
+        throw new UnsupportedOperationException("Mushroom cows can now hold multiple effects. Use #getStewEffects");
+    }
+
+    /**
+     * Sets the type of effect applied to stew
+     * from this mushroom cow is.
+     *
+     * @param type new effect type
+     *             or null if this cow does not give effects
+     * @deprecated Mushroom cows can now hold multiple effects, use {@link #setStewEffects(java.util.List)}
+     * @throws UnsupportedOperationException
+     */
+    @Deprecated(forRemoval = true)
+    @org.jetbrains.annotations.Contract("_ -> fail")
+    default void setStewEffect(@org.jetbrains.annotations.Nullable org.bukkit.potion.PotionEffectType type) {
+        throw new UnsupportedOperationException("Mushroom cows can now hold multiple effects. Use #setStewEffects");
+    }
+
+    /**
+     * Returns an immutable collection of the effects applied to stew
+     * items for this mushroom cow.
+     *
+     * @return immutable effect entry collection
+     */
+    java.util.@NotNull @org.jetbrains.annotations.Unmodifiable List<io.papermc.paper.potion.SuspiciousEffectEntry> getStewEffects();
+
+    /**
+     * Sets effects applied to stew items for this mushroom cow.
+     *
+     * @param effects effect entry list
+     */
+    void setStewEffects(java.util.@NotNull List<io.papermc.paper.potion.SuspiciousEffectEntry> effects);
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Panda.java b/src/main/java/org/bukkit/entity/Panda.java
index 1f027927a1194f4f8e86c1375a2772e6e261c151..aa5686df134185334a74429576ff0709a604dbfd 100644
--- a/src/main/java/org/bukkit/entity/Panda.java
+++ b/src/main/java/org/bukkit/entity/Panda.java
@@ -107,6 +107,98 @@ public interface Panda extends Animals, Sittable {
      */
     int getUnhappyTicks();
 
+    // Paper start - Panda API
+    /**
+     * Sets the sneeze progress in this animation.
+     * This value counts up only if {@link Panda#isSneezing()} is true
+     *
+     * @param ticks sneeze progress
+     */
+    void setSneezeTicks(int ticks);
+
+    /**
+     * Gets the current sneeze progress, or how many ticks this panda will sneeze for.
+     *
+     * @return sneeze progress
+     */
+    int getSneezeTicks();
+
+    /**
+     * Sets the eating ticks for this panda.
+     * <p>
+     *
+     * This starts counting up as long as it is greater than 0.
+     *
+     * @param ticks eating ticks
+     */
+    void setEatingTicks(int ticks);
+
+    /**
+     * Gets the current eating progress, or how many ticks this panda has been eating for.
+     *
+     * @return eating progress
+     */
+    int getEatingTicks();
+
+    /**
+     * Sets the number of ticks this panda will be unhappy for.
+     * <p>
+     * This value counts down.
+     *
+     * @param ticks unhappy ticks
+     */
+    void setUnhappyTicks(int ticks);
+
+    /**
+     * Sets if this panda is currently on its back.
+     *
+     * @param onBack is on its back
+     * @deprecated use {@link #setOnBack(boolean)}
+     */
+    @Deprecated(forRemoval = true)
+    default void setIsOnBack(boolean onBack) {
+        this.setOnBack(onBack);
+    }
+
+    /**
+     * Sets if this panda is currently sitting.
+     *
+     * @param sitting is currently sitting
+     * @deprecated use {@link #setSitting(boolean)}
+     */
+    @Deprecated(forRemoval = true)
+    default void setIsSitting(boolean sitting) {
+        this.setSitting(sitting);
+    }
+
+    /**
+     * Sets if this panda is currently sitting.
+     *
+     * @param sitting is currently sitting
+     */
+    @Override
+    void setSitting(boolean sitting);
+
+    /**
+     * Gets if this panda is sitting.
+     *
+     * @return is sitting
+     */
+    @Override
+    boolean isSitting();
+
+    /**
+     * Gets this Panda's combined gene.
+     * <p>
+     * The combined gene can be modified using
+     * {@link #setMainGene(Gene)} or {@link #setHiddenGene(Gene)}.
+     *
+     * @return combined gene
+     */
+    @NotNull
+    Gene getCombinedGene();
+    // Paper end - Panda API
+
     public enum Gene {
 
         NORMAL(false),
diff --git a/src/main/java/org/bukkit/entity/Phantom.java b/src/main/java/org/bukkit/entity/Phantom.java
index 3dafdf14ced991ae1179ef1ca455da62f8c3243e..2fe8e8868f12bd9e846baf8858cd2c333c00a0d8 100644
--- a/src/main/java/org/bukkit/entity/Phantom.java
+++ b/src/main/java/org/bukkit/entity/Phantom.java
@@ -40,5 +40,21 @@ public interface Phantom extends Flying, Enemy {
      * @param shouldBurnInDay True to burn in sunlight
      */
     public void setShouldBurnInDay(boolean shouldBurnInDay);
+
+    /**
+     * Gets the location that this phantom circles around when not attacking a player
+     * This will be changed after attacking a player.
+     *
+     * @return circling location
+     */
+    @org.jetbrains.annotations.NotNull
+    org.bukkit.Location getAnchorLocation();
+
+    /**
+     * Sets the location that this phantom circles around when not attacking a player
+     *
+     * @param location circling location (world is ignored, will always use the entity's world)
+     */
+    void setAnchorLocation(@org.jetbrains.annotations.NotNull org.bukkit.Location location);
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Piglin.java b/src/main/java/org/bukkit/entity/Piglin.java
index 6fdc0e0bb62189dbf3cf9ce7a87b7fbb995956a3..eb0b7c18c1266748ff1e8e18e49b6c4f6e078b83 100644
--- a/src/main/java/org/bukkit/entity/Piglin.java
+++ b/src/main/java/org/bukkit/entity/Piglin.java
@@ -90,4 +90,47 @@ public interface Piglin extends PiglinAbstract, InventoryHolder, com.destroystok
      */
     @NotNull
     public Set<Material> getBarterList();
+
+    // Paper start
+    /**
+     * Causes the piglin to appear as if they are charging
+     * a crossbow.
+     * <p>
+     * This works with any item currently held in the piglin's hand.
+     *
+     * @param chargingCrossbow is charging
+     */
+    void setChargingCrossbow(boolean chargingCrossbow);
+
+    /**
+     * Gets if the piglin is currently charging the
+     * item in their hand.
+     *
+     * @return is charging
+     */
+    boolean isChargingCrossbow();
+
+    /**
+     * Sets whether the Piglin is dancing or not
+     *
+     * @param dancing is dancing
+     */
+    void setDancing(boolean dancing);
+
+    /**
+     * Causes the piglin to dance for a
+     * specified amount of time
+     *
+     * @param duration duration of the dance in ticks
+     */
+    void setDancing(long duration);
+
+    /**
+     * Gets if the piglin is currently dancing
+     *
+     * @return is dancing
+     */
+    boolean isDancing();
+    // Paper end
+
 }
diff --git a/src/main/java/org/bukkit/entity/PolarBear.java b/src/main/java/org/bukkit/entity/PolarBear.java
index 479f7a7c54c85cb685f56e60906650d1989c03ff..4e526ba6aa462a484984fb9f0512b8db113086fe 100644
--- a/src/main/java/org/bukkit/entity/PolarBear.java
+++ b/src/main/java/org/bukkit/entity/PolarBear.java
@@ -3,4 +3,22 @@ package org.bukkit.entity;
 /**
  * Represents a polar bear.
  */
-public interface PolarBear extends Animals {}
+// Paper start
+public interface PolarBear extends Animals {
+
+    /**
+     * Returns whether the polar bear is standing.
+     *
+     * @return whether the polar bear is standing
+     */
+    boolean isStanding();
+
+    /**
+     * Sets whether the polar bear is standing.
+     *
+     * @param standing whether the polar bear should be standing
+     */
+    void setStanding(boolean standing);
+
+}
+// Paper end
diff --git a/src/main/java/org/bukkit/entity/Rabbit.java b/src/main/java/org/bukkit/entity/Rabbit.java
index e88154283a8ef594e160d25005870053de15568a..979062aa476e3bd75166458d8831894fba8778cd 100644
--- a/src/main/java/org/bukkit/entity/Rabbit.java
+++ b/src/main/java/org/bukkit/entity/Rabbit.java
@@ -14,6 +14,23 @@ public interface Rabbit extends Animals {
      * @param type Sets the type of rabbit for this entity.
      */
     public void setRabbitType(@NotNull Type type);
+    // Paper start
+    /**
+     * Sets how many ticks this rabbit will wait
+     * until trying to find more carrots.
+     *
+     * @param ticks ticks
+     */
+    void setMoreCarrotTicks(int ticks);
+
+    /**
+     * Returns how many ticks this rabbit
+     * will wait until trying to find more carrots.
+     *
+     * @return ticks
+     */
+    int getMoreCarrotTicks();
+    // Paper end
 
     /**
      * Represents the various types a Rabbit might be.
diff --git a/src/main/java/org/bukkit/entity/Ravager.java b/src/main/java/org/bukkit/entity/Ravager.java
index 4374d5206d4d15a4d8d228c137ed9a96821a1f02..0eb7214472f3a43641a3526000af6beeefb7b36f 100644
--- a/src/main/java/org/bukkit/entity/Ravager.java
+++ b/src/main/java/org/bukkit/entity/Ravager.java
@@ -3,4 +3,61 @@ package org.bukkit.entity;
 /**
  * Illager beast.
  */
-public interface Ravager extends Raider { }
+// Paper start - Missing Entity Behavior
+public interface Ravager extends Raider {
+
+    /**
+     * Gets how many ticks this ravager is attacking for.
+     * When attacking, the ravager cannot move.
+     *
+     * @return ticks attacking or -1 if they are currently not attacking
+     */
+    int getAttackTicks();
+
+    /**
+     * Sets how many ticks this ravager is attacking for.
+     * When attacking, the ravager cannot move.
+     * This will tick down till it gets to -1, where this ravager will no longer be attacking.
+     *
+     * @param ticks ticks attacking or -1 if they should no longer be attacking
+     */
+    void setAttackTicks(int ticks);
+
+    /**
+     * Gets how many ticks the ravager is stunned for.
+     * The ravager cannot move or attack while stunned.
+     * At 0, this will cause the ravager to roar.
+     *
+     * @return ticks stunned or -1 if they are currently not stunned
+     */
+    int getStunnedTicks();
+
+    /**
+     * Sets how many ticks the ravager is stunned for.
+     * The ravager cannot move or attack while stunned.
+     * At 0, this will cause the ravager to roar.
+     *
+     * @param ticks ticks stunned or -1 if they should no longer be stunned
+     */
+    void setStunnedTicks(int ticks);
+
+    /**
+     * Gets how many ticks the ravager is roaring for.
+     * While roaring, the ravager cannot move
+     *
+     * @return ticks roaring or -1 if they are currently not roaring
+     */
+    int getRoarTicks();
+
+    /**
+     * Sets how many ticks the ravager is roaring for.
+     * While roaring, the ravager cannot move
+     * This will tick down till it gets to -1, where it is no longer active.
+     * If set to 11, this will play a sound and hurt nearby players.
+     *
+     * @param ticks ticks roaring or -1 if they should no longer be roaring
+     */
+    void setRoarTicks(int ticks);
+
+}
+// Paper end
diff --git a/src/main/java/org/bukkit/entity/Salmon.java b/src/main/java/org/bukkit/entity/Salmon.java
index a52a7af219633d575dcbe8ac4b219834bfd4d4d2..1e839b247182af6873a4d74b236d6412817c18bf 100644
--- a/src/main/java/org/bukkit/entity/Salmon.java
+++ b/src/main/java/org/bukkit/entity/Salmon.java
@@ -4,4 +4,4 @@ package org.bukkit.entity;
 /**
  * Represents a salmon fish.
  */
-public interface Salmon extends Fish { }
+public interface Salmon extends io.papermc.paper.entity.SchoolableFish { } // Paper - Schooling Fish API
diff --git a/src/main/java/org/bukkit/entity/TNTPrimed.java b/src/main/java/org/bukkit/entity/TNTPrimed.java
index 0813bd913c8fdb2001963ce3e82c07c2af105418..87e717c9ea61b0cbf536bc62fa829ddcfae5ad8c 100644
--- a/src/main/java/org/bukkit/entity/TNTPrimed.java
+++ b/src/main/java/org/bukkit/entity/TNTPrimed.java
@@ -64,4 +64,26 @@ public interface TNTPrimed extends Explosive {
     default org.bukkit.Location getSourceLoc() {
         return this.getOrigin();
     }
+
+    // Paper start
+    /**
+     * Sets the visual block data of this
+     * primed tnt.
+     * <br>
+     * The explosion of the tnt stays the
+     * same and is not affected by this change.
+     *
+     * @param data the visual block data
+     */
+    void setBlockData(@org.jetbrains.annotations.NotNull org.bukkit.block.data.BlockData data);
+
+    /**
+     * Gets the visual block data of this
+     * primed tnt.
+     *
+     * @return the visual block data
+     */
+    @org.jetbrains.annotations.NotNull
+    org.bukkit.block.data.BlockData getBlockData();
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Tadpole.java b/src/main/java/org/bukkit/entity/Tadpole.java
index d64979ebdd018f0f63b6115809b48374ba454249..8e097ad55d208a6980c320e2a849efdcc504cff1 100644
--- a/src/main/java/org/bukkit/entity/Tadpole.java
+++ b/src/main/java/org/bukkit/entity/Tadpole.java
@@ -18,4 +18,21 @@ public interface Tadpole extends Fish {
      * @param age New age
      */
     public void setAge(int age);
+
+    // Paper start - Tadpole age lock api
+    /**
+     * Lock the age of the animal, setting this will prevent the animal from
+     * maturing.
+     *
+     * @param lock new lock
+     */
+    void setAgeLock(boolean lock);
+
+    /**
+     * Gets the current agelock.
+     *
+     * @return the current agelock
+     */
+    boolean getAgeLock();
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Trident.java b/src/main/java/org/bukkit/entity/Trident.java
index 28cdb3b544572ba7aeb9061e3163e3895ac7d4e6..c8015ff610e3c1222cb368ea1d8a0c2f3785d9c7 100644
--- a/src/main/java/org/bukkit/entity/Trident.java
+++ b/src/main/java/org/bukkit/entity/Trident.java
@@ -3,4 +3,40 @@ package org.bukkit.entity;
 /**
  * Represents a thrown trident.
  */
-public interface Trident extends AbstractArrow, ThrowableProjectile { }
+// Paper start
+public interface Trident extends AbstractArrow, ThrowableProjectile {
+
+    /**
+     * Returns whether the trident has an enchanted glow.
+     * This can be separate from the underlying item having any enchantments.
+     *
+     * @return whether the trident has an enchanted glow
+     */
+    boolean hasGlint();
+
+    /**
+     * Sets whether the trident has an enchanted glow.
+     * This is separate from the underlying item having any enchantments.
+     *
+     * @param glint whether the trident should have an enchanted glow
+     */
+    void setGlint(boolean glint);
+
+    /**
+     * Returns the loyalty level of the trident.
+     * This can be separate from the underlying item's enchantments.
+     *
+     * @return loyalty level of the trident
+     */
+    int getLoyaltyLevel();
+
+    /**
+     * Sets the loyalty level of the trident.
+     * This is separate from the underlying item's enchantments.
+     *
+     * @param loyaltyLevel loyalty level
+     * @throws IllegalArgumentException if the loyalty level is lower than 0 or greater than 127
+     */
+    void setLoyaltyLevel(int loyaltyLevel);
+}
+// Paper end
diff --git a/src/main/java/org/bukkit/entity/TropicalFish.java b/src/main/java/org/bukkit/entity/TropicalFish.java
index ab31289bb0f9c8e581537a88e1db22bcdbd3d484..84bba32e80d755f094975b667f1bf2a132087f4f 100644
--- a/src/main/java/org/bukkit/entity/TropicalFish.java
+++ b/src/main/java/org/bukkit/entity/TropicalFish.java
@@ -6,7 +6,7 @@ import org.jetbrains.annotations.NotNull;
 /**
  * Tropical fish.
  */
-public interface TropicalFish extends Fish {
+public interface TropicalFish extends io.papermc.paper.entity.SchoolableFish { // Paper - Schooling Fish API
 
     /**
      * Gets the color of the fish's pattern.
diff --git a/src/main/java/org/bukkit/entity/Vex.java b/src/main/java/org/bukkit/entity/Vex.java
index 627e3c1a96ae3331f5aa2dd7803dd2a31c7204be..3c447d2300c866ae605eeca97bd869f400d6be6f 100644
--- a/src/main/java/org/bukkit/entity/Vex.java
+++ b/src/main/java/org/bukkit/entity/Vex.java
@@ -57,21 +57,30 @@ public interface Vex extends Monster {
      * Gets the remaining lifespan of this entity.
      *
      * @return life in ticks
+     * @deprecated This API duplicates existing API which uses the more
+     * preferable name due to mirroring internals better
      */
+    @Deprecated
     int getLifeTicks();
 
     /**
      * Sets the remaining lifespan of this entity.
      *
      * @param lifeTicks life in ticks, or negative for unlimited lifepan
+     * @deprecated This API duplicates existing API which uses the more
+     * preferable name due to mirroring internals better
      */
+    @Deprecated
     void setLifeTicks(int lifeTicks);
 
     /**
      * Gets if the entity has a limited life.
      *
      * @return true if the entity has limited life
+     * @deprecated This API duplicates existing API which uses the more
+     * preferable name due to mirroring internals better
      */
+    @Deprecated
     boolean hasLimitedLife();
     // Paper start
 
@@ -89,5 +98,37 @@ public interface Vex extends Monster {
      * @param summoner New summoner
      */
     void setSummoner(@Nullable Mob summoner);
+
+    /**
+     * Gets if this vex should start to take damage
+     * once {@link Vex#getLimitedLifetimeTicks()} is less than or equal to 0.
+     * 
+     * @return will take damage
+     */
+    boolean hasLimitedLifetime();
+
+    /**
+     * Sets if this vex should start to take damage
+     * once {@link Vex#getLimitedLifetimeTicks()} is less than or equal to 0.
+     *      
+     * @param hasLimitedLifetime should take damage
+     */
+    void setLimitedLifetime(boolean hasLimitedLifetime);
+
+    /**
+     * Gets the number of ticks remaining until the vex will start
+     * to take damage.
+     * 
+     * @return ticks until the vex will start to take damage
+     */
+    int getLimitedLifetimeTicks();
+
+    /**
+     * Sets the number of ticks remaining until the vex takes damage.
+     * This number is ticked down only if {@link Vex#hasLimitedLifetime()} is true.
+     * 
+     * @param ticks ticks remaining
+     */
+    void setLimitedLifetimeTicks(int ticks);
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/WanderingTrader.java b/src/main/java/org/bukkit/entity/WanderingTrader.java
index da76e1ed5406322073dd8c7a89ca55aa68620ac4..9f25774659b29d8fcca3eb9d9487edff42dbad13 100644
--- a/src/main/java/org/bukkit/entity/WanderingTrader.java
+++ b/src/main/java/org/bukkit/entity/WanderingTrader.java
@@ -53,5 +53,26 @@ public interface WanderingTrader extends AbstractVillager {
      * @return whether the mob will drink
      */
     public boolean canDrinkMilk();
+
+    /**
+     * Gets the location that this wandering trader is currently
+     * wandering towards.
+     * <p>
+     * This will return null if the wandering trader has finished
+     * wandering towards the given location.
+     *
+     * @return the location currently wandering towards, or null if not wandering
+     */
+    @org.jetbrains.annotations.Nullable
+    org.bukkit.Location getWanderingTowards();
+
+    /**
+     * Sets the location that this wandering trader is currently wandering towards.
+     * <p>
+     * This can be set to null to prevent the wandering trader from wandering further.
+     *
+     * @param location location to wander towards (world is ignored, will always use the entity's world)
+     */
+    void setWanderingTowards(@org.jetbrains.annotations.Nullable org.bukkit.Location location);
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Warden.java b/src/main/java/org/bukkit/entity/Warden.java
index 3794db8867b53f3b3735ad82fdd8765a26df2bfb..efaa45f41bc1dc8df6665c55b4e5ade343d60d4c 100644
--- a/src/main/java/org/bukkit/entity/Warden.java
+++ b/src/main/java/org/bukkit/entity/Warden.java
@@ -30,6 +30,18 @@ public interface Warden extends Monster {
      */
     int getAnger(@NotNull Entity entity);
 
+    // Paper start
+    /**
+     * Gets the highest anger level of this warden.
+     * <p>
+     * Anger is an integer from 0 to 150. Once a Warden reaches 80 anger at a
+     * target it will actively pursue it.
+     *
+     * @return highest anger level
+     */
+    int getHighestAnger();
+    // Paper end
+
     /**
      * Increases the anger level of this warden.
      *
diff --git a/src/main/java/org/bukkit/entity/Wither.java b/src/main/java/org/bukkit/entity/Wither.java
index 87a814f63c3f35be35bfa210c9248ad211c0dd8f..14543c2238b45c526dd9aebea2aa5c22f5df54dc 100644
--- a/src/main/java/org/bukkit/entity/Wither.java
+++ b/src/main/java/org/bukkit/entity/Wither.java
@@ -43,7 +43,9 @@ public interface Wither extends Monster, Boss, com.destroystokyo.paper.entity.Ra
      * Returns the wither's current invulnerability ticks.
      *
      * @return amount of invulnerability ticks
+     * @deprecated Duplicate api, use {@link #getInvulnerableTicks()}
      */
+    @Deprecated(forRemoval = true) // Paper
     int getInvulnerabilityTicks();
 
     /**
@@ -52,7 +54,9 @@ public interface Wither extends Monster, Boss, com.destroystokyo.paper.entity.Ra
      * When invulnerability ticks reach 0, the wither will trigger an explosion.
      *
      * @param ticks amount of invulnerability ticks
+     * @deprecated Duplicate api, use {@link #setInvulnerableTicks(int)}
      */
+    @Deprecated(forRemoval = true) // Paper
     void setInvulnerabilityTicks(int ticks);
 
     /**
@@ -64,4 +68,43 @@ public interface Wither extends Monster, Boss, com.destroystokyo.paper.entity.Ra
         LEFT,
         RIGHT
     }
+
+    // Paper start
+    /**
+     * @return whether the wither is charged
+     */
+    boolean isCharged();
+
+    /**
+     * @return ticks the wither is invulnerable for
+     */
+    int getInvulnerableTicks();
+
+    /**
+     * Sets for how long in the future, the wither should be invulnerable.
+     *
+     * @param ticks ticks the wither is invulnerable for
+     */
+    void setInvulnerableTicks(int ticks);
+
+    /**
+     * @return whether the wither can travel through portals
+     */
+    boolean canTravelThroughPortals();
+
+    /**
+     * Sets whether the wither can travel through portals.
+     *
+     * @param value whether the wither can travel through portals
+     */
+    void setCanTravelThroughPortals(boolean value);
+
+    /**
+     * Makes the wither invulnerable for 11 seconds and
+     * sets the health to one third of the max health.
+     * <br>
+     * This is called in vanilla directly after spawning the wither.
+     */
+    void enterInvulnerabilityPhase();
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/ZombieVillager.java b/src/main/java/org/bukkit/entity/ZombieVillager.java
index 7cc1d9a966454af70b7c25735fe474fe3eb97eb4..ac6fd8ca95771c185c145f4589ddd5b2a6e8c2da 100644
--- a/src/main/java/org/bukkit/entity/ZombieVillager.java
+++ b/src/main/java/org/bukkit/entity/ZombieVillager.java
@@ -90,4 +90,22 @@ public interface ZombieVillager extends Zombie {
      * @param conversionPlayer the player
      */
     void setConversionPlayer(@Nullable OfflinePlayer conversionPlayer);
+
+    // Paper start - missing entity behaviour api - converting without entity event
+    /**
+     * Sets the amount of ticks until this entity will be converted to a
+     * Villager as a result of being cured.
+     * <p>
+     * When this reaches 0, the entity will be converted. A value of less than 0
+     * will stop the current conversion process without converting the current
+     * entity.
+     *
+     * @param time new conversion time
+     * @param broadcastEntityEvent whether this conversion time mutation should broadcast the
+     *                             org.bukkit.{@link org.bukkit.EntityEffect#ZOMBIE_TRANSFORM} entity event to the
+     *                             world. If false, no entity event is published, preventing for example the
+     *                             org.bukkit.{@link org.bukkit.Sound#ENTITY_ZOMBIE_VILLAGER_CURE} from playing.
+     */
+    void setConversionTime(int time, boolean broadcastEntityEvent);
+    // Paper end - missing entity behaviour api - converting without entity event
 }
diff --git a/src/main/java/org/bukkit/entity/minecart/HopperMinecart.java b/src/main/java/org/bukkit/entity/minecart/HopperMinecart.java
index db69687a7ad4b18d17ab1677cae5d8dd4dcd3678..304b05aeaea5febf493fc40d433a23acb384b4f0 100644
--- a/src/main/java/org/bukkit/entity/minecart/HopperMinecart.java
+++ b/src/main/java/org/bukkit/entity/minecart/HopperMinecart.java
@@ -24,4 +24,23 @@ public interface HopperMinecart extends Minecart, InventoryHolder, LootableEntit
      * @param enabled new enabled state
      */
     void setEnabled(boolean enabled);
+    // Paper start
+    /**
+     * Gets the number of ticks that this hopper minecart cannot pickup items up for.
+     *
+     * @return ticks left on cooldown
+     * @deprecated Hopper minecarts don't have cooldowns anymore
+     */
+    @Deprecated(forRemoval = true)
+    int getPickupCooldown();
+
+    /**
+     * Sets the number of ticks that this hopper minecart cannot pickup items for.
+     *
+     * @param cooldown cooldown length in ticks
+     * @deprecated Hopper minecarts don't have cooldowns anymore
+     */
+    @Deprecated(forRemoval = true)
+    void setPickupCooldown(int cooldown);
+    // Paper end
 }