Question Is there a better way to check if NPC is dead?

Currently using this to delay until the npc is dead:

Code (Text):

1. if (nearestNpc.interact("Attack")) {
2.     Execution.delayUntil(() -> !nearestNpc.isValid(), () -> false, 10, 60000, 70000);
3. }

It works fine, except it's too slow. Between the time that it dies and the time that it becomes invalid, there's a lag (about 1-3 seconds).

I tried doing this instead:

Code (Text):

1. if (nearestNpc.interact("Attack")) {
2.     Execution.delayUntil(() -> nearestNpc.getHealthGauge().getPercent() == 0, () -> false, 10, 60000, 70000);
3. }

and it improves things a bit, but after some time nearestNpc.getHealthGauge().getPercent() throws a null pointer exception. This happens even if I null check it!

So I was wondering if anyone knows of the fastest way to check when an NPC is dead?

 

Initially, just nearestNpc.getHealthGauge(). But then getPercent() also threw a NullException, even when getHealthGauge() was NOT null. Weird. So I tried to null check both of them individually, which didn't work for getPercent, it still threw the error.

Anyway, got it sorted by doing:

Code (Text):

1. Execution.delayUntil(() -> nearestNpc.getHealthGauge() == null, () -> false, 10, 60000, 70000);

and then storing the position of the dead NPC, and filtering the list of NPCS to exclude it (so that the player moves on to the next NPC as soon as it's dead and doesn't keep attacking until its invalid) :

Code (Text):

1. LocatableEntityQueryResults<Npc> allNpcs = Npcs.newQuery().names(npcNames).off(killedNpcPosition).results().sortByDistance();