SPIGOT-2581: EntityAirChangeEvent

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/event/entity/EntityAirChangeEvent.java

@@ -0,0 +1,59 @@
+package org.bukkit.event.entity;
+
+import org.bukkit.entity.Entity;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+
+/**
+ * Called when the amount of air an entity has remaining changes.
+ */
+public class EntityAirChangeEvent extends EntityEvent implements Cancellable {
+
+    private static final HandlerList handlers = new HandlerList();
+    //
+    private int amount;
+    //
+    private boolean cancelled;
+
+    public EntityAirChangeEvent(Entity what, int amount) {
+        super(what);
+        this.amount = amount;
+    }
+
+    /**
+     * Gets the amount of air the entity has left (measured in ticks).
+     *
+     * @return amount of air remaining
+     */
+    public int getAmount() {
+        return amount;
+    }
+
+    /**
+     * Sets the amount of air remaining for the entity (measured in ticks.
+     *
+     * @param amount amount of air remaining
+     */
+    public void setAmount(int amount) {
+        this.amount = amount;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean cancelled) {
+        this.cancelled = cancelled;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}