Purpur/patches/api/0008-Llama-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Fri, 18 Oct 2019 22:50:05 -0500
Subject: [PATCH] Llama API


diff --git a/src/main/java/org/bukkit/entity/Llama.java b/src/main/java/org/bukkit/entity/Llama.java
index bc84b892cae5fe7019a3ad481e9da79956efa1fe..48eb5b00c460cccde29d327cef1d63fc04d6a829 100644
--- a/src/main/java/org/bukkit/entity/Llama.java
+++ b/src/main/java/org/bukkit/entity/Llama.java
@@ -119,4 +119,20 @@ public interface Llama extends ChestedHorse, RangedEntity { // Paper
     @org.jetbrains.annotations.Nullable
     Llama getCaravanTail();
     // Paper end
+
+    // Purpur start
+    /**
+     * Check if this Llama should attempt to join a caravan
+     *
+     * @return True if Llama is allowed to join a caravan
+     */
+    boolean shouldJoinCaravan();
+
+    /**
+     * Set if this Llama should attempt to join a caravan
+     *
+     * @param shouldJoinCaravan True to allow joining a caravan
+     */
+    void setShouldJoinCaravan(boolean shouldJoinCaravan);
+    // Purpur end
 }
diff --git a/src/main/java/org/purpurmc/purpur/event/entity/LlamaJoinCaravanEvent.java b/src/main/java/org/purpurmc/purpur/event/entity/LlamaJoinCaravanEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..e34c37579dc8a5a108c03b9eff6bb916a910d867
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/event/entity/LlamaJoinCaravanEvent.java
@@ -0,0 +1,60 @@
+package org.purpurmc.purpur.event.entity;
+
+import org.bukkit.entity.Llama;
+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;
+
+/**
+ * Called when a Llama tries to join a caravan.
+ * <p>
+ * Cancelling the event will not let the Llama join. To prevent future attempts
+ * at joining a caravan use {@link Llama#setShouldJoinCaravan(boolean)}.
+ */
+@NullMarked
+public class LlamaJoinCaravanEvent extends EntityEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
+    private boolean canceled;
+    private final Llama head;
+
+    @ApiStatus.Internal
+    public LlamaJoinCaravanEvent(Llama llama, Llama head) {
+        super(llama);
+        this.head = head;
+    }
+
+    @Override
+    public Llama getEntity() {
+        return (Llama) entity;
+    }
+
+    /**
+     * Get the Llama that this Llama is about to follow
+     *
+     * @return Llama about to be followed
+     */
+    public Llama getHead() {
+        return head;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return canceled;
+    }
+
+    @Override
+    public void setCancelled(boolean cancel) {
+        canceled = cancel;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}
diff --git a/src/main/java/org/purpurmc/purpur/event/entity/LlamaLeaveCaravanEvent.java b/src/main/java/org/purpurmc/purpur/event/entity/LlamaLeaveCaravanEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..23ea41ff5dc43a915a263aeb1a246705de8bf9e1
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/event/entity/LlamaLeaveCaravanEvent.java
@@ -0,0 +1,34 @@
+package org.purpurmc.purpur.event.entity;
+
+import org.bukkit.entity.Llama;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.entity.EntityEvent;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * Called when a Llama leaves a caravan
+ */
+@NullMarked
+public class LlamaLeaveCaravanEvent extends EntityEvent {
+    private static final HandlerList handlers = new HandlerList();
+
+    @ApiStatus.Internal
+    public LlamaLeaveCaravanEvent(Llama llama) {
+        super(llama);
+    }
+
+    @Override
+    public Llama getEntity() {
+        return (Llama) entity;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}