Cuberite Forum

Hi guys!

I'm new at this community, so first i am gonna tell something about me.
I'm Corné, and i make custom plugins for Spigot and BungeeCord.
My lastest project is a perms plugin voor BungeeCord. But enough about Spigot and BungeeCord.
Lua is completly new for me, but i'm gonna try it.
BossMessage helps you to broadcast a message to all players.
I have here an example (I use this for my server) :
Screenshot

You can use it for: You are playing on {server} or for example a welcome message.
I hope it's ready next week, i first need to open my server at the 27th of July.
I will give you some updates,

Cya

RedDragonNL

Welcome to the forum
Unfortunately, you can't send this type of messages via lua (I think), because of the line below the text.

(07-23-2014, 05:03 AM)tonibm19 Wrote: [ -> ]Welcome to the forum
Unfortunately, you can't send this type of messages via lua (I think), because of the line below the text.

I think it will be possible with an API?!
I will try it out, if it's not possible i let you know

-RedDragonNL

I'm curious how bukkit does it. Do they spawn an ender dragon with a custom name at like Y-1000?

(07-23-2014, 05:13 AM)STR_Warrior Wrote: [ -> ]I'm curious how bukkit does it. Do they spawn an ender dragon with a custom name at like Y-1000?

I don't know if *bukkit* does it that way, but I've played on servers that do that.

(07-23-2014, 05:13 AM)STR_Warrior Wrote: [ -> ]I'm curious how bukkit does it. Do they spawn an ender dragon with a custom name at like Y-1000?

WHAT. That's DRAGON ABUSE.

:(

Don't worry. I trained it

Never seen the movie though

I'd guess that's the new Position param in the chat packet:
http://wiki.vg/Pre-release_protocol#Chat_Message

I don't think it's that because it works in 1.7 and maybe even lower MC versions. The position param might be for the new "Titles" (/title command). I'm not sure though because I remember seeing a new Title packet.

I use this code in bukkit:

package de.howaner.OITC.util;
 
import de.howaner.OITC.OITCPlugin;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.minecraft.server.v1_7_R3.DataWatcher;
import net.minecraft.server.v1_7_R3.EntityPlayer;
import net.minecraft.server.v1_7_R3.EnumClientCommand;
import net.minecraft.server.v1_7_R3.Packet;
import net.minecraft.server.v1_7_R3.PacketPlayInClientCommand;
import net.minecraft.server.v1_7_R3.PacketPlayOutEntityDestroy;
import net.minecraft.server.v1_7_R3.PacketPlayOutEntityMetadata;
import net.minecraft.server.v1_7_R3.PacketPlayOutEntityTeleport;
import net.minecraft.server.v1_7_R3.PacketPlayOutSpawnEntityLiving;
import org.bukkit.Bukkit;
 
import org.bukkit.Location;
import org.bukkit.craftbukkit.v1_7_R3.entity.CraftPlayer;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
 
public class StatusBar {
	public static final int ENTITY_ID = 1234;
	public static List<String> hasHealthBar = new ArrayList<String>();
	public static Map<String, Integer> schedulers = new HashMap<String, Integer>();
	
	/* Set Variable with Reflections */
	public static void setVar(String key, Object value, Object c) {
		try {
			Field f = c.getClass().getDeclaredField(key);
			f.setAccessible(true);
			f.set(c, value);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public static void sendPacket(Player player, Packet packet) {
		EntityPlayer entityPlayer = ((CraftPlayer) player).getHandle();
		
		entityPlayer.playerConnection.sendPacket(packet);
	}
	
	//Accessing packets
	public static PacketPlayOutSpawnEntityLiving getMobPacket(String text, Location loc, int health) {
		PacketPlayOutSpawnEntityLiving mobPacket = new PacketPlayOutSpawnEntityLiving();
		
		setVar("a", (int) ENTITY_ID, mobPacket);
		setVar("b", (byte) EntityType.ENDER_DRAGON.getTypeId(), mobPacket);
		setVar("c", (int) Math.floor(loc.getBlockX() * 32.0D), mobPacket);
		setVar("d", (int) Math.floor(loc.getBlockY() * 32.0D), mobPacket);
		setVar("e", (int) Math.floor(loc.getBlockZ() * 32.0D), mobPacket);
		setVar("f", (int) 0, mobPacket);
		setVar("g", (byte) 0, mobPacket);
		setVar("h", (byte) 0, mobPacket);
		setVar("i", (byte) 0, mobPacket);
		setVar("j", (byte) 0, mobPacket);
		setVar("k", (byte) 0, mobPacket);
		setVar("l", getWatcher(text, health), mobPacket);
		
		return mobPacket;
	}
	
	public static PacketPlayOutEntityDestroy getDestroyEntityPacket() {
		PacketPlayOutEntityDestroy packet = new PacketPlayOutEntityDestroy();
		
		setVar("a", new int[]{ENTITY_ID}, packet);
		
		return packet;
	}
	
	public static PacketPlayOutEntityMetadata getMetadataPacket(DataWatcher watcher) {
		PacketPlayOutEntityMetadata metaPacket = new PacketPlayOutEntityMetadata();
		
		setVar("a", (int) ENTITY_ID, metaPacket);
		setVar("b", watcher.c(), metaPacket);
		
		return metaPacket;
	}
	
	public static PacketPlayOutEntityTeleport getTeleportPacket(Location loc) {
		PacketPlayOutEntityTeleport packet = new PacketPlayOutEntityTeleport();
		
		setVar("a", (int) ENTITY_ID, packet);
		setVar("b", (int) Math.floor(loc.getX() * 32.0D), packet);
		setVar("c", (int) Math.floor(loc.getY() * 32.0D), packet);
		setVar("d", (int) Math.floor(loc.getZ() * 32.0D), packet);
		setVar("e", (byte) ((int) (loc.getYaw() * 256.0F / 360.F)), packet);
		setVar("f", (byte) ((int) (loc.getPitch() * 256.0F / 360.0F)), packet);
		
        return packet;
    }
	
	public static PacketPlayInClientCommand getRespawnPacket() {
		PacketPlayInClientCommand packet = new PacketPlayInClientCommand();
		
		setVar("a", EnumClientCommand.PERFORM_RESPAWN, packet);
		
		return packet;
	}
	
	public static DataWatcher getWatcher(String text, int health) {
		DataWatcher watcher = new DataWatcher(null);
		
		watcher.a(0, (Byte) (byte) 0x20); //Flags, 0x20 = invisible
		watcher.a(6, (Float) (float) health);
		watcher.a(10, (String) text); //Entity name
		watcher.a(11, (Byte) (byte) 1); //Show name, 1 = show, 0 = don't show
		watcher.a(16, (Integer) (int) health); //Wither health, 300 = full health
		
		return watcher;
	}
	
	public static void displayTextBar(String text, final Player player) {
		displayTextBar(text, player, 200, -1);
	}
	
	public static void displayTextBar(String text, final Player player, int health, int time) {
		if (hasHealthBar.contains(player.getName())) {
			if (schedulers.containsKey(player.getName()))
				Bukkit.getScheduler().cancelTask(schedulers.get(player.getName()));
			schedulers.remove(player.getName());
			sendPacket(player, getMetadataPacket(getWatcher(text, health)));
			
			if (time != -1) {
				schedulers.put(player.getName(), Bukkit.getScheduler().scheduleSyncDelayedTask(OITCPlugin.getPlugin(), new Runnable() {
					
					public void run(){
						PacketPlayOutEntityDestroy destroyEntityPacket = getDestroyEntityPacket();
						sendPacket(player, destroyEntityPacket);
						hasHealthBar.remove(player.getName());
						schedulers.remove(player.getName());
					}
				}, 20L * time));
			}
			
			return;
		}
		PacketPlayOutSpawnEntityLiving mobPacket = getMobPacket(text, player.getLocation().clone().add(0, -200, 0), health);
		
		sendPacket(player, mobPacket);
		hasHealthBar.add(player.getName());
		
		if (time != -1) {
			schedulers.put(player.getName(), Bukkit.getScheduler().scheduleSyncDelayedTask(OITCPlugin.getPlugin(), new Runnable() {
				
				public void run(){
					PacketPlayOutEntityDestroy destroyEntityPacket = getDestroyEntityPacket();
					sendPacket(player, destroyEntityPacket);
					hasHealthBar.remove(player.getName());
					schedulers.remove(player.getName());
				}
			}, 20L * time));
		}
	}
	
}