Updated the library.

api/src/main/java/net/jitse/npclib/NPCLib.java

@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2018 Jitse Boonstra
+ */
+
+package net.jitse.npclib;
+
+import net.jitse.npclib.api.NPC;
+import net.jitse.npclib.api.utilities.Logger;
+import net.jitse.npclib.listeners.ChunkListener;
+import net.jitse.npclib.listeners.PacketListener;
+import net.jitse.npclib.listeners.PlayerListener;
+import org.bukkit.plugin.PluginManager;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.util.List;
+
+public final class NPCLib {
+
+    private final JavaPlugin plugin;
+    private final Logger logger;
+    private final Class<?> npcClass;
+
+    private double autoHideDistance = 50.0;
+
+    public NPCLib(JavaPlugin plugin) {
+        this.plugin = plugin;
+        this.logger = new Logger("NPCLib");
+
+        String versionName = plugin.getServer().getClass().getPackage().getName().split("\\.")[3];
+
+        Class<?> npcClass = null;
+
+        try {
+            npcClass = Class.forName("net.jitse.npclib.nms." + versionName + ".NPC_" + versionName);
+        } catch (ClassNotFoundException exception) {
+            // Version not supported, error below.
+        }
+
+        this.npcClass = npcClass;
+
+        if (npcClass == null) {
+            logger.severe("Failed to initiate. Your server's version ("
+                    + versionName + ") is not supported");
+            return;
+        }
+
+        PluginManager pluginManager = plugin.getServer().getPluginManager();
+
+        pluginManager.registerEvents(new PlayerListener(this), plugin);
+        pluginManager.registerEvents(new ChunkListener(this), plugin);
+
+        // Boot the according packet listener.
+        new PacketListener().start(this);
+
+        logger.info("Enabled for Minecraft " + versionName);
+    }
+
+    /**
+     * @return The JavaPlugin instance.
+     */
+    public JavaPlugin getPlugin() {
+        return plugin;
+    }
+
+    /**
+     * Set a new value for the auto-hide distance.
+     * A recommended value (and default) is 50 blocks.
+     *
+     * @param autoHideDistance The new value.
+     */
+    public void setAutoHideDistance(double autoHideDistance) {
+        this.autoHideDistance = autoHideDistance;
+    }
+
+    /**
+     * @return The auto-hide distance.
+     */
+    public double getAutoHideDistance() {
+        return autoHideDistance;
+    }
+
+    /**
+     * @return The logger NPCLib uses.
+     */
+    public Logger getLogger() {
+        return logger;
+    }
+
+    /**
+     * Create a new non-player character (NPC).
+     *
+     * @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(List<String> lines) {
+        try {
+            return (NPC) npcClass.getConstructors()[0].newInstance(this, lines);
+        } catch (Exception exception) {
+            logger.warning("Failed to create NPC. Please report the following stacktrace message: " + exception.getMessage());
+        }
+
+        return null;
+    }
+
+    /**
+     * Create a new non-player character (NPC).
+     *
+     * @return The NPC object you may use to sendShowPackets it to players.
+     */
+    public NPC createNPC() {
+        return createNPC(null);
+    }
+}