Add Horse Animation API (#5599)

build-data/paper.at

@@ -210,10 +210,9 @@ public net.minecraft.world.entity.monster.Witch usingTime
 # PlayerDeathEvent#getItemsToKeep
 public net.minecraft.world.entity.player.Inventory compartments
 
-# Missing Entity API
+# Missing Entity Behavior API
 public net.minecraft.world.entity.animal.Fox isDefending()Z
 public net.minecraft.world.entity.animal.Fox setDefending(Z)V
-
 public net.minecraft.world.entity.animal.Fox isFaceplanted()Z
 public net.minecraft.world.entity.animal.Fox setFaceplanted(Z)V
 

patches/api/Missing-Entity-Behavior-API.patch

@@ -4,6 +4,65 @@ Date: Fri, 28 May 2021 21:06:59 -0400
 Subject: [PATCH] Missing Entity Behavior API
 
 
+diff --git a/src/main/java/org/bukkit/entity/AbstractHorse.java b/src/main/java/org/bukkit/entity/AbstractHorse.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/entity/AbstractHorse.java
++++ b/src/main/java/org/bukkit/entity/AbstractHorse.java
+@@ -0,0 +0,0 @@ public interface AbstractHorse extends Vehicle, InventoryHolder, Tameable {
+     @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/Cat.java b/src/main/java/org/bukkit/entity/Cat.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/org/bukkit/entity/Cat.java

patches/server/Missing-Entity-Behavior-API.patch

@@ -4,6 +4,78 @@ Date: Mon, 21 Jun 2021 23:56:07 -0400
 Subject: [PATCH] Missing Entity Behavior API
 
 
+diff --git a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java
++++ b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java
+@@ -0,0 +0,0 @@ public abstract class AbstractHorse extends Animal implements ContainerListener,
+ 
+     }
+ 
++    // Paper Start - Horse API
++    public void setMouthOpen(boolean open) {
++        this.setFlag(FLAG_OPEN_MOUTH, open);
++    }
++    public boolean isMouthOpen() {
++        return this.getFlag(FLAG_OPEN_MOUTH);
++    }
++    // Paper End - Horse API
+     private void openMouth() {
+         if (!this.level.isClientSide) {
+             this.mouthCounter = 1;
+@@ -0,0 +0,0 @@ public abstract class AbstractHorse extends Animal implements ContainerListener,
+         this.setFlag(16, eatingGrass);
+     }
+ 
++    // Paper Start - Horse API
++    public void setForceStanding(boolean standing) {
++        this.setFlag(FLAG_STANDING, standing);
++    }
++    // Paper End - Horse API
+     public void setStanding(boolean angry) {
+         if (angry) {
+             this.setEating(false);
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftAbstractHorse.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftAbstractHorse.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftAbstractHorse.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftAbstractHorse.java
+@@ -0,0 +0,0 @@ public abstract class CraftAbstractHorse extends CraftAnimals implements Abstrac
+     public AbstractHorseInventory getInventory() {
+         return new CraftSaddledInventory(getHandle().inventory);
+     }
++
++    // Paper start - Horse API
++    @Override
++    public boolean isEatingGrass() {
++        return this.getHandle().isEating();
++    }
++
++    @Override
++    public void setEatingGrass(boolean eating) {
++        this.getHandle().setEating(eating);
++    }
++
++    @Override
++    public boolean isRearing() {
++        return this.getHandle().isStanding();
++    }
++
++    @Override
++    public void setRearing(boolean rearing) {
++        this.getHandle().setForceStanding(rearing);
++    }
++
++    @Override
++    public boolean isEating() {
++        return this.getHandle().isMouthOpen();
++    }
++
++    @Override
++    public void setEating(boolean eating) {
++       this.getHandle().setMouthOpen(eating);
++    }
++    // Paper end - Horse API
+ }
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftCat.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftCat.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftCat.java