Reflection Utilities

Reflection.java

/**
 * Created by Ryan on 11/2/2014
 * <p/>
 * Project: Phenomenon
 *
 * About: Various reflection utilities created by @rbrick(Ryan)
 */
public class Reflection {

    private static String VERSION = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];

    private static String NMS = "net.minecraft.server";

    private static String OBC = "org.bukkit.craftbukkit";



    public static Class<?> getCraftBukkitClass(String className) {
        try {
           return Class.forName(OBC + "."  + VERSION + "." + className);
        } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }
    }

    public static Class<?> getMinecraftClass(String className) {
        try {
          return Class.forName(NMS + "." + VERSION + "." + className);
        } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }
    }


    // For utility use solely.
    private static Class<?> getPacketClass() {
        return getMinecraftClass("Packet");
    }

    public static Object getHandle(Object entity) {
        try {
            Method method = entity.getClass().getDeclaredMethod("getHandle");
            return method.invoke(entity);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return null;
    }

    public static Object getHandle(Entity entity) {
        try {
          Method method = entity.getClass().getMethod("getHandle");

          return method.invoke(entity);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return null;
    }

    public static void sendPacket(Player player, Object packet) {
       try {
           Object entity_player = getHandle(player);
           Field player_connection = entity_player.getClass().getField("playerConnection");
           player_connection.setAccessible(true);
           Object initiatedConnection = player_connection.get(entity_player);
           Method sendPacket = initiatedConnection.getClass().getMethod("sendPacket", getPacketClass());
           sendPacket.invoke(initiatedConnection, packet);
       } catch (Exception ex) {
           ex.printStackTrace();
       }
    }

}