For version 1.0-dev.

src/net/jitse/npclib/NPCLib.java

@@ -43,12 +43,13 @@ public class NPCLib {
      * Create a new non-player character (NPC).
      *
      * @param skin             The skin you want the NPC to have.
+     * @param autoHideDistance Distance from where you want to NPC to hide from the player (50 recommended).
      * @param lines            The text you want to sendShowPackets above the NPC (null = no text).
      * @return The NPC object you may use to sendShowPackets it to players.
      */
-    public NPC createNPC(Skin skin, List<String> lines) {
+    public NPC createNPC(Skin skin, double autoHideDistance, List<String> lines) {
         try {
-            return version.createNPC(plugin, skin, lines);
+            return version.createNPC(plugin, skin, autoHideDistance, lines);
         } catch (InstantiationException | IllegalAccessException | InvocationTargetException exception) {
             Bukkit.getConsoleSender().sendMessage(ChatColor.RED + "NPCLib failed to create NPC. Please report this stacktrace:");
             exception.printStackTrace();
@@ -56,4 +57,15 @@ public class NPCLib {
 
         return null;
     }
+
+    /**
+     * Create a new non-player character (NPC).
+     *
+     * @param skin  The skin you want the NPC to have.
+     * @param lines The text you want to sendShowPackets above the NPC (null = no text).
+     * @return The NPC object you may use to sendShowPackets it to players.
+     */
+    public NPC createNPC(Skin skin, List<String> lines) {
+        return createNPC(skin, 50, lines);
+    }
 }

src/net/jitse/npclib/api/NPC.java

@@ -5,6 +5,7 @@ import com.mojang.authlib.properties.Property;
 import net.jitse.npclib.NPCManager;
 import net.jitse.npclib.events.NPCDestroyEvent;
 import net.jitse.npclib.events.NPCSpawnEvent;
+import net.jitse.npclib.events.trigger.TriggerType;
 import net.jitse.npclib.skin.Skin;
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
@@ -41,10 +42,6 @@ public abstract class NPC {
         NPCManager.add(this);
     }
 
-    public NPC(JavaPlugin plugin, Skin skin, List<String> lines) {
-        this(plugin, skin, 50, lines);
-    }
-
     protected GameProfile generateGameProfile(UUID uuid, String name) {
         GameProfile gameProfile = new GameProfile(uuid, name);
         gameProfile.getProperties().removeAll("textures");
@@ -88,7 +85,7 @@ public abstract class NPC {
     }
 
     public void show(Player player, boolean auto) {
-        NPCSpawnEvent event = new NPCSpawnEvent(this, player);
+        NPCSpawnEvent event = new NPCSpawnEvent(this, player, auto ? TriggerType.AUTOMATIC : TriggerType.MANUAL);
         plugin.getServer().getPluginManager().callEvent(event);
         if (event.isCancelled()) {
             return;
@@ -121,7 +118,7 @@ public abstract class NPC {
     }
 
     public void hide(Player player, boolean auto) {
-        NPCDestroyEvent event = new NPCDestroyEvent(this, player);
+        NPCDestroyEvent event = new NPCDestroyEvent(this, player, auto ? TriggerType.AUTOMATIC : TriggerType.MANUAL);
         plugin.getServer().getPluginManager().callEvent(event);
         if (event.isCancelled()) {
             return;

src/net/jitse/npclib/events/NPCDestroyEvent.java

@@ -1,6 +1,7 @@
 package net.jitse.npclib.events;
 
 import net.jitse.npclib.api.NPC;
+import net.jitse.npclib.events.trigger.TriggerType;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
 import org.bukkit.event.Event;
@@ -14,10 +15,12 @@ public class NPCDestroyEvent extends Event implements Cancellable {
 
     private final NPC npc;
     private final Player player;
+    private final TriggerType trigger;
 
-    public NPCDestroyEvent(NPC npc, Player player) {
+    public NPCDestroyEvent(NPC npc, Player player, TriggerType trigger) {
         this.npc = npc;
         this.player = player;
+        this.trigger = trigger;
     }
 
     @Override
@@ -33,6 +36,10 @@ public class NPCDestroyEvent extends Event implements Cancellable {
         return player;
     }
 
+    public TriggerType getTrigger() {
+        return trigger;
+    }
+
     @Override
     public boolean isCancelled() {
         return cancelled;

src/net/jitse/npclib/events/NPCSpawnEvent.java

@@ -1,6 +1,7 @@
 package net.jitse.npclib.events;
 
 import net.jitse.npclib.api.NPC;
+import net.jitse.npclib.events.trigger.TriggerType;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
 import org.bukkit.event.Event;
@@ -14,10 +15,12 @@ public class NPCSpawnEvent extends Event implements Cancellable {
 
     private final NPC npc;
     private final Player player;
+    private final TriggerType trigger;
 
-    public NPCSpawnEvent(NPC npc, Player player) {
+    public NPCSpawnEvent(NPC npc, Player player, TriggerType trigger) {
         this.npc = npc;
         this.player = player;
+        this.trigger = trigger;
     }
 
     @Override
@@ -33,6 +36,10 @@ public class NPCSpawnEvent extends Event implements Cancellable {
         return player;
     }
 
+    public TriggerType getTrigger() {
+        return trigger;
+    }
+
     @Override
     public boolean isCancelled() {
         return cancelled;

src/net/jitse/npclib/events/trigger/TriggerType.java

@@ -0,0 +1,6 @@
+package net.jitse.npclib.events.trigger;
+
+public enum TriggerType {
+
+    MANUAL, AUTOMATIC
+}

src/net/jitse/npclib/nms/v1_10_r1/NPC_V1_10_R1.java

@@ -25,8 +25,8 @@ public class NPC_V1_10_R1 extends NPC {
     private PacketPlayOutEntityHeadRotation packetPlayOutEntityHeadRotation;
     private PacketPlayOutEntityDestroy packetPlayOutEntityDestroy;
 
-    public NPC_V1_10_R1(JavaPlugin plugin, Skin skin, List<String> lines) {
+    public NPC_V1_10_R1(JavaPlugin plugin, Skin skin, double autoHideDistance, List<String> lines) {
-        super(plugin, skin, lines);
+        super(plugin, skin, autoHideDistance, lines);
     }
 
     @Override

src/net/jitse/npclib/nms/v1_11_r1/NPC_V1_11_R1.java

@@ -25,8 +25,8 @@ public class NPC_V1_11_R1 extends NPC {
     private PacketPlayOutEntityHeadRotation packetPlayOutEntityHeadRotation;
     private PacketPlayOutEntityDestroy packetPlayOutEntityDestroy;
 
-    public NPC_V1_11_R1(JavaPlugin plugin, Skin skin, List<String> lines) {
+    public NPC_V1_11_R1(JavaPlugin plugin, Skin skin, double autoHideDistance, List<String> lines) {
-        super(plugin, skin, lines);
+        super(plugin, skin, autoHideDistance, lines);
     }
 
     @Override

src/net/jitse/npclib/nms/v1_12_r1/NPC_V1_12_R1.java

@@ -25,8 +25,8 @@ public class NPC_V1_12_R1 extends NPC {
     private PacketPlayOutEntityHeadRotation packetPlayOutEntityHeadRotation;
     private PacketPlayOutEntityDestroy packetPlayOutEntityDestroy;
 
-    public NPC_V1_12_R1(JavaPlugin plugin, Skin skin, List<String> lines) {
+    public NPC_V1_12_R1(JavaPlugin plugin, Skin skin, double autoHideDistance, List<String> lines) {
-        super(plugin, skin, lines);
+        super(plugin, skin, autoHideDistance, lines);
     }
 
     @Override

src/net/jitse/npclib/nms/v1_8_r1/NPC_V1_8_R1.java

@@ -25,8 +25,8 @@ public class NPC_V1_8_R1 extends NPC {
     private PacketPlayOutEntityHeadRotation packetPlayOutEntityHeadRotation;
     private PacketPlayOutEntityDestroy packetPlayOutEntityDestroy;
 
-    public NPC_V1_8_R1(JavaPlugin plugin, Skin skin, List<String> lines) {
+    public NPC_V1_8_R1(JavaPlugin plugin, Skin skin, double autoHideDistance, List<String> lines) {
-        super(plugin, skin, lines);
+        super(plugin, skin, autoHideDistance, lines);
     }
 
     @Override

src/net/jitse/npclib/nms/v1_8_r2/NPC_V1_8_R2.java

@@ -25,8 +25,8 @@ public class NPC_V1_8_R2 extends NPC {
     private PacketPlayOutEntityHeadRotation packetPlayOutEntityHeadRotation;
     private PacketPlayOutEntityDestroy packetPlayOutEntityDestroy;
 
-    public NPC_V1_8_R2(JavaPlugin plugin, Skin skin, List<String> lines) {
+    public NPC_V1_8_R2(JavaPlugin plugin, Skin skin, double autoHideDistance, List<String> lines) {
-        super(plugin, skin, lines);
+        super(plugin, skin, autoHideDistance, lines);
     }
 
     @Override

src/net/jitse/npclib/nms/v1_8_r3/NPC_V1_8_R3.java

@@ -25,8 +25,8 @@ public class NPC_V1_8_R3 extends NPC {
     private PacketPlayOutEntityHeadRotation packetPlayOutEntityHeadRotation;
     private PacketPlayOutEntityDestroy packetPlayOutEntityDestroy;
 
-    public NPC_V1_8_R3(JavaPlugin plugin, Skin skin, List<String> lines) {
+    public NPC_V1_8_R3(JavaPlugin plugin, Skin skin, double autoHideDistance, List<String> lines) {
-        super(plugin, skin, lines);
+        super(plugin, skin, autoHideDistance, lines);
     }
 
     @Override

src/net/jitse/npclib/nms/v1_9_r1/NPC_V1_9_R1.java

@@ -25,8 +25,8 @@ public class NPC_V1_9_R1 extends NPC {
     private PacketPlayOutEntityHeadRotation packetPlayOutEntityHeadRotation;
     private PacketPlayOutEntityDestroy packetPlayOutEntityDestroy;
 
-    public NPC_V1_9_R1(JavaPlugin plugin, Skin skin, List<String> lines) {
+    public NPC_V1_9_R1(JavaPlugin plugin, Skin skin, double autoHideDistance, List<String> lines) {
-        super(plugin, skin, lines);
+        super(plugin, skin, autoHideDistance, lines);
     }
 
     @Override

src/net/jitse/npclib/nms/v1_9_r2/NPC_V1_9_R2.java

@@ -25,8 +25,8 @@ public class NPC_V1_9_R2 extends NPC {
     private PacketPlayOutEntityHeadRotation packetPlayOutEntityHeadRotation;
     private PacketPlayOutEntityDestroy packetPlayOutEntityDestroy;
 
-    public NPC_V1_9_R2(JavaPlugin plugin, Skin skin, List<String> lines) {
+    public NPC_V1_9_R2(JavaPlugin plugin, Skin skin, double autoHideDistance, List<String> lines) {
-        super(plugin, skin, lines);
+        super(plugin, skin, autoHideDistance, lines);
     }
 
     @Override

src/net/jitse/npclib/plugin/NPCLibPlugin.java

@@ -33,7 +33,7 @@ public class NPCLibPlugin extends JavaPlugin implements Listener {
         }
 
         MineSkinFetcher.fetchSkinFromIdAsync(168841, skin -> {
-            NPC npc = npcLib.createNPC(skin, Arrays.asList(
+            NPC npc = npcLib.createNPC(skin, 5, Arrays.asList(
                     ChatColor.BOLD + "NPC Library", "",
                     "Create your own", "non-player characters",
                     "with the simplistic", "API of NPCLib!"