TitleAPI

TitleAPI

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.entity.Player;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;

/**
 * Created by magang on 16/6/10.
 */
public class TitleAPI {

    public static void sendPacket(Player player, Object packet) {
        try {
            Object handle = player.getClass().getMethod("getHandle").invoke(player);
            Object playerConnection = handle.getClass().getField("playerConnection").get(handle);
            playerConnection.getClass().getMethod("sendPacket", getNMSClass("Packet")).invoke(playerConnection, packet);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static Class<?> getNMSClass(String name) {
        String version = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
        try {
            return Class.forName("net.minecraft.server." + version + "." + name);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
            return null;
        }
    }

    //发送全屏标题
    public static void sendTitle(Player player, Integer fadeIn, Integer stay, Integer fadeOut, String title, String subtitle) {
        try {
            Object e;
            Object chatTitle;
            Object chatSubtitle;
            Constructor subtitleConstructor;
            Object titlePacket;
            Object subtitlePacket;

            if (title != null) {
                title = ChatColor.translateAlternateColorCodes('&', title);
                title = title.replaceAll("%player%", player.getDisplayName());
                // Times packets
                e = getNMSClass("PacketPlayOutTitle").getDeclaredClasses()[0].getField("TIMES").get((Object) null);
                chatTitle = getNMSClass("IChatBaseComponent").getDeclaredClasses()[0].getMethod("a", new Class[]{String.class}).invoke((Object) null, new Object[]{"{\"text\":\"" + title + "\"}"});
                subtitleConstructor = getNMSClass("PacketPlayOutTitle").getConstructor(new Class[]{getNMSClass("PacketPlayOutTitle").getDeclaredClasses()[0], getNMSClass("IChatBaseComponent"), Integer.TYPE, Integer.TYPE, Integer.TYPE});
                titlePacket = subtitleConstructor.newInstance(new Object[]{e, chatTitle, fadeIn, stay, fadeOut});
                sendPacket(player, titlePacket);

                e = getNMSClass("PacketPlayOutTitle").getDeclaredClasses()[0].getField("TITLE").get((Object) null);
                chatTitle = getNMSClass("IChatBaseComponent").getDeclaredClasses()[0].getMethod("a", new Class[]{String.class}).invoke((Object) null, new Object[]{"{\"text\":\"" + title + "\"}"});
                subtitleConstructor = getNMSClass("PacketPlayOutTitle").getConstructor(new Class[]{getNMSClass("PacketPlayOutTitle").getDeclaredClasses()[0], getNMSClass("IChatBaseComponent")});
                titlePacket = subtitleConstructor.newInstance(new Object[]{e, chatTitle});
                sendPacket(player, titlePacket);
            }

            if (subtitle != null) {
                subtitle = ChatColor.translateAlternateColorCodes('&', subtitle);
                subtitle = subtitle.replaceAll("%player%", player.getDisplayName());
                // Times packets
                e = getNMSClass("PacketPlayOutTitle").getDeclaredClasses()[0].getField("TIMES").get((Object) null);
                chatSubtitle = getNMSClass("IChatBaseComponent").getDeclaredClasses()[0].getMethod("a", new Class[]{String.class}).invoke((Object) null, new Object[]{"{\"text\":\"" + title + "\"}"});
                subtitleConstructor = getNMSClass("PacketPlayOutTitle").getConstructor(new Class[]{getNMSClass("PacketPlayOutTitle").getDeclaredClasses()[0], getNMSClass("IChatBaseComponent"), Integer.TYPE, Integer.TYPE, Integer.TYPE});
                subtitlePacket = subtitleConstructor.newInstance(new Object[]{e, chatSubtitle, fadeIn, stay, fadeOut});
                sendPacket(player, subtitlePacket);

                e = getNMSClass("PacketPlayOutTitle").getDeclaredClasses()[0].getField("SUBTITLE").get((Object) null);
                chatSubtitle = getNMSClass("IChatBaseComponent").getDeclaredClasses()[0].getMethod("a", new Class[]{String.class}).invoke((Object) null, new Object[]{"{\"text\":\"" + subtitle + "\"}"});
                subtitleConstructor = getNMSClass("PacketPlayOutTitle").getConstructor(new Class[]{getNMSClass("PacketPlayOutTitle").getDeclaredClasses()[0], getNMSClass("IChatBaseComponent"), Integer.TYPE, Integer.TYPE, Integer.TYPE});
                subtitlePacket = subtitleConstructor.newInstance(new Object[]{e, chatSubtitle, fadeIn, stay, fadeOut});
                sendPacket(player, subtitlePacket);
            }
        } catch (Exception var11) {
            var11.printStackTrace();
        }
    }

    public static void clearTitle(Player player) {
        sendTitle(player, 0, 0, 0, "", "");
    }
    
    //发送TAb标题
    public static void sendTabTitle(Player player, String header, String footer) {
        if (header == null) header = "";
        header = ChatColor.translateAlternateColorCodes('&', header);

        if (footer == null) footer = "";
        footer = ChatColor.translateAlternateColorCodes('&', footer);

        header = header.replaceAll("%player%", player.getDisplayName());
        footer = footer.replaceAll("%player%", player.getDisplayName());

        try {
            Object tabHeader = getNMSClass("IChatBaseComponent").getDeclaredClasses()[0].getMethod("a", String.class).invoke(null, "{\"text\":\"" + header + "\"}");
            Object tabFooter = getNMSClass("IChatBaseComponent").getDeclaredClasses()[0].getMethod("a", String.class).invoke(null, "{\"text\":\"" + footer + "\"}");
            Constructor<?> titleConstructor = getNMSClass("PacketPlayOutPlayerListHeaderFooter").getConstructor(getNMSClass("IChatBaseComponent"));
            Object packet = titleConstructor.newInstance(tabHeader);
            Field field = packet.getClass().getDeclaredField("b");
            field.setAccessible(true);
            field.set(packet, tabFooter);
            sendPacket(player, packet);
        } catch (Exception ex) {
            ex.printStackTrace();
        }

    }

    //发送到物品栏上方
    public static void sendOutChat(Player player, String text) {
        if (text == null) text = "";
        text = ChatColor.translateAlternateColorCodes('&', text);

        try {
            Object chatText = getNMSClass("IChatBaseComponent").getDeclaredClasses()[0].getMethod("a", String.class).invoke(null, "{\"text\":\"" + text + "\"}");
            Constructor<?> titleConstructor = getNMSClass("PacketPlayOutChat").getConstructor(getNMSClass("IChatBaseComponent"), Byte.TYPE);
            Object packet = titleConstructor.newInstance(chatText, (byte) 2);
            sendPacket(player, packet);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

}