Add ElderGuardianAppearanceEvent

paper-api/src/main/java/io/papermc/paper/event/entity/ElderGuardianAppearanceEvent.java

@@ -0,0 +1,65 @@
+package io.papermc.paper.event.entity;
+
+import org.bukkit.entity.ElderGuardian;
+import org.bukkit.entity.Player;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.entity.EntityEvent;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * Is called when an {@link ElderGuardian} appears in front of a {@link Player}.
+ */
+@NullMarked
+public class ElderGuardianAppearanceEvent extends EntityEvent implements Cancellable {
+
+    private static final HandlerList HANDLER_LIST = new HandlerList();
+
+    private final Player affectedPlayer;
+    private boolean cancelled;
+
+    @ApiStatus.Internal
+    public ElderGuardianAppearanceEvent(final ElderGuardian guardian, final Player affectedPlayer) {
+        super(guardian);
+        this.affectedPlayer = affectedPlayer;
+    }
+
+    /**
+     * Get the player affected by the guardian appearance.
+     *
+     * @return Player affected by the appearance
+     */
+    public Player getAffectedPlayer() {
+        return this.affectedPlayer;
+    }
+
+    /**
+     * The elder guardian playing the effect.
+     *
+     * @return The elder guardian
+     */
+    @Override
+    public ElderGuardian getEntity() {
+        return (ElderGuardian) super.getEntity();
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return this.cancelled;
+    }
+
+    @Override
+    public void setCancelled(final boolean cancel) {
+        this.cancelled = cancel;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return HANDLER_LIST;
+    }
+
+    public static HandlerList getHandlerList() {
+        return HANDLER_LIST;
+    }
+}