gistfile1.java

public static void setBossBar(String text, Player player, int percentage) {
  	int maxBar = 300;
		int currentBarHealth = (int)(((float)percentage / 100) * (float)maxBar);
		
		hasHealthBar.put(player.getName(), true);
		
		Location mobLocation = player.getLocation();
		double viewX = Math.toRadians(player.getLocation().getYaw() - 90);
		mobLocation.setX(mobLocation.getX() - Math.cos(viewX) * 100);
		mobLocation.setZ(mobLocation.getZ() - Math.sin(viewX) * 100);
		mobLocation.setY(mobLocation.getY() - 34);
		
		Packet24MobSpawn mobPacket = getMobPacket(text, mobLocation);
		sendPacket(player, mobPacket);
		
		DataWatcher watcher = getWatcher(text, currentBarHealth);
		Packet40EntityMetadata metaPacket = getMetadataPacket(watcher);
		
		sendPacket(player, metaPacket);
	}