From 8c8383109af2546552207aa5181136d8b73c4677 Mon Sep 17 00:00:00 2001
From: Bukkit/Spigot <noreply+git-bukkit@papermc.io>
Date: Wed, 9 Mar 2016 20:14:05 -0700
Subject: [PATCH] SPIGOT-1571: Add Entity Glide Events.

By: 0x277F <0x277F@gmail.com>
---
 .../java/org/bukkit/entity/LivingEntity.java  | 15 ++++++
 .../event/entity/EntityToggleGlideEvent.java  | 50 +++++++++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 paper-api/src/main/java/org/bukkit/event/entity/EntityToggleGlideEvent.java

diff --git a/paper-api/src/main/java/org/bukkit/entity/LivingEntity.java b/paper-api/src/main/java/org/bukkit/entity/LivingEntity.java
index 46347b9cbf..3582d2ffa1 100644
--- a/paper-api/src/main/java/org/bukkit/entity/LivingEntity.java
+++ b/paper-api/src/main/java/org/bukkit/entity/LivingEntity.java
@@ -366,4 +366,19 @@ public interface LivingEntity extends Attributable, Entity, Damageable, Projecti
      * @return whether the operation was successful
      */
     public boolean setLeashHolder(Entity holder);
+
+    /**
+     * Checks to see if an entity is gliding, such as using an Elytra.
+     * @return True if this entity is gliding.
+     */
+    public boolean isGliding();
+
+    /**
+     * Makes entity start or stop gliding. This will work even if an Elytra
+     * is not equipped, but will be reverted by the server immediately after
+     * unless an event-cancelling mechanism is put in place.
+     * @param gliding True if the entity is gliding.
+     */
+    public void setGliding(boolean gliding);
+
 }
diff --git a/paper-api/src/main/java/org/bukkit/event/entity/EntityToggleGlideEvent.java b/paper-api/src/main/java/org/bukkit/event/entity/EntityToggleGlideEvent.java
new file mode 100644
index 0000000000..67fbf8fb13
--- /dev/null
+++ b/paper-api/src/main/java/org/bukkit/event/entity/EntityToggleGlideEvent.java
@@ -0,0 +1,50 @@
+package org.bukkit.event.entity;
+
+import org.bukkit.entity.LivingEntity;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+
+/**
+ * Sent when an entity's gliding status is toggled with an Elytra.
+ * Examples of when this event would be called:
+ * <ul>
+ *     <li>Player presses the jump key while in midair and using an Elytra</li>
+ *     <li>Player lands on ground while they are gliding (with an Elytra)</li>
+ * </ul>
+ * This can be visually estimated by the animation in which a player turns horizontal.
+ */
+public class EntityToggleGlideEvent extends EntityEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
+
+    private boolean cancel = false;
+    private final boolean isGliding;
+
+    public EntityToggleGlideEvent(LivingEntity who, final boolean isGliding) {
+        super(who);
+        this.isGliding = isGliding;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancel;
+    }
+
+    @Override
+    public void setCancelled(boolean cancel) {
+        this.cancel = cancel;
+    }
+
+    public boolean isGliding() {
+        return isGliding;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+}