check npc cast

runelite-client/src/main/java/net/runelite/client/plugins/specialcounter/SpecialCounterPlugin.java

@@ -324,26 +324,29 @@ public void onVarbitChanged(VarbitChanged event)
 			lastSpecHpChange = lastHpChangeCycle == client.getGameCycle();
 			hitsplatTick = serverTicks + getHitDelay(specialWeapon, target);
 
-			// Check if the counters should be reset
-			NPC npc = (NPC) target;
-			int interactingId = npc.getId();
-			int npcIndex = npc.getIndex();
+			log.debug("Special attack used - cycle: {} percent: {} weapon: {} server cycle {} hitsplat cycle {} hp change: {}",
+				client.getGameCycle(), specialPercentage, specialWeapon, serverTicks, hitsplatTick, lastSpecHpChange);
 
-			if (IGNORED_NPCS.contains(interactingId))
+			// Check if the counters should be reset
+			if (target instanceof NPC)
 			{
-				return;
-			}
+				NPC npc = (NPC) target;
+				int interactingId = npc.getId();
+				int npcIndex = npc.getIndex();
 
-			// If this is a new NPC reset the counters
-			if (!interactedNpcIndexes.contains(npcIndex))
-			{
-				log.debug("Removing counters due to interact change");
-				removeCounters();
-				interactedNpcIndexes.add(npcIndex);
-			}
+				if (IGNORED_NPCS.contains(interactingId))
+				{
+					return;
+				}
 
-			log.debug("Special attack used - cycle: {} percent: {} weapon: {} server cycle {} hitsplat cycle {} hp change: {}",
-				client.getGameCycle(), specialPercentage, specialWeapon, serverTicks, hitsplatTick, lastSpecHpChange);
+				// If this is a new NPC reset the counters
+				if (!interactedNpcIndexes.contains(npcIndex))
+				{
+					log.debug("Removing counters due to interact change");
+					removeCounters();
+					interactedNpcIndexes.add(npcIndex);
+				}
+			}
 		});
 	}