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Get boss bars visible to player


Craftiii4

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Thanks, unfortunately, this is a client-side only mod.

However, I did manage to resolve my problem using a little bit of reflection.


In case anyone else ever needs it, here's my solution:

 

	@SuppressWarnings("unchecked")
	public static List<String> getBossBarNames(Minecraft minecraft) throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
		
		GuiBossOverlay bossOverlay = minecraft.ingameGUI.getBossOverlay();

		String nameAfter = null;
		
		// Find the name of the field as it will change with each obfuscation of forge
		// If you're using this, you'll want to move this lookup elsewhere and store the result
		for (Field s : GuiBossOverlay.class.getDeclaredFields()) {
			
			if (s.getType().getName().equals("java.util.Map")) {
				nameAfter = s.getName();
				break;
			}
			
		}
		
		List<String> names = new ArrayList<String>();
		
		if (nameAfter != null) {
		
			Field bossField = GuiBossOverlay.class.getDeclaredField(nameAfter);
			bossField.setAccessible(true);
			
			Map<UUID, BossInfoLerping> mapBossInfos = (Map<UUID, BossInfoLerping>) bossField.get(bossOverlay);
			
			for (BossInfoLerping bIL : mapBossInfos.values())
				names.add(bIL.getName().getFormattedText());
		
		}
		
		return names;
		
	}

 

Edited by Craftiii4
Fix possible npe
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Just now, diesieben07 said:

Then why did you say "on the server"? o.O

 

As for your reflection code:

  • Do not use getClass. Use a static .class reference.
  • Do not use that field-detection magic. Use the actual field name (SRG and MCP name).
  • Only look up the Field instance once and then store it in a static final field.
  • Don't cast to HashMap if the field is only of type Map.

 

By on server I meant that the boss bar is on the server, e.g. "Welcome to thisserver.com"

 

Thanks for the tips, I do only look up field once, just modified it slightly before I added the code here so it would work as a standalone function.

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Just now, diesieben07 said:

Just for the future, this is very counter-productive.

Was experimenting with the boss related classes trying to get the output out I wanted, so granted it's not the best reflection ever written. I'll modify my above code to reflect the changes suggested, thanks again!

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