Fixed seemingly random server crashes caused by ArrayIndexOutOfBoundsException on unsafe type during threaded operations by synchronizing add/remove logic for PulseRunner.TASKS

Server/src/main/kotlin/rs09/game/world/PulseRunner.kt

@@ -10,8 +10,11 @@ import java.util.*
 
 class PulseRunner {
     val TASKS = ArrayList<Pulse>()
+
     fun submit(pulse: Pulse){
-        TASKS.add(pulse)
+        synchronized(this.TASKS) {
+            TASKS.add(pulse)
+        }
     }
 }
 /*

Server/src/main/kotlin/rs09/worker/MajorUpdateWorker.kt

@@ -106,7 +106,9 @@ class MajorUpdateWorker {
 
         //remove all null or finished pulses from the list
         rmlist.forEach {
-            GameWorld.Pulser.TASKS.remove(it)
+            synchronized(GameWorld.Pulser.TASKS) {
+                GameWorld.Pulser.TASKS.remove(it)
+            }
         }
 
         rmlist.clear()