MonsterEvent switches state back to "not started" if the sub gets far enough from the monsters (prevents monster music from staying on), SoundPlayer plays a random default music clip if a suitable clip isn't found for the highest priority task

Subsurface/Source/Events/MonsterEvent.cs

@@ -94,12 +94,13 @@ namespace Barotrauma
 
             if (isFinished) return;
 
+            isStarted = false;
             bool monstersDead = true;
             foreach (Character monster in monsters)
             {
                 if (monster.IsDead) continue;
 
-                if (!isStarted && Vector2.Distance(monster.WorldPosition, Submarine.MainSub.WorldPosition) < 5000.0f) isStarted = true;
+                if (!isStarted && Vector2.DistanceSquared(monster.WorldPosition, Submarine.MainSub.WorldPosition) < 5000.0f*5000.0f) isStarted = true;
                     
                 monstersDead = false;
                 break;

Subsurface/Source/Sounds/SoundPlayer.cs

@@ -345,6 +345,24 @@ namespace Barotrauma
         }
 
         private static List<BackgroundMusic> GetSuitableMusicClips()
+        {
+            string musicType = "default";
+            if (OverrideMusicType != null)
+            {
+                musicType = OverrideMusicType;
+            }
+            else if (Character.Controlled != null &&
+                Level.Loaded != null && Level.Loaded.Ruins != null &&
+                Level.Loaded.Ruins.Any(r => r.Area.Contains(Character.Controlled.WorldPosition)))
+            {
+                musicType = "ruins";
+            }
+            else if ((Character.Controlled != null && Character.Controlled.Submarine != null && Character.Controlled.Submarine.AtDamageDepth) ||
+                    (Screen.Selected == GameMain.GameScreen && GameMain.GameScreen.Cam.Position.Y < SubmarineBody.DamageDepth))
+            {
+                musicType = "deep";
+            }
+            else
             {
                 Task criticalTask = null;
                 if (GameMain.GameSession != null && GameMain.GameSession.TaskManager != null)
@@ -359,29 +377,20 @@ namespace Barotrauma
                     }
                 }
 
-            if (OverrideMusicType != null)
+                if (criticalTask != null)
                 {
-                return musicClips.Where(x => x != null && x.type == OverrideMusicType).ToList();
+                    var suitableClips =
+                        musicClips.Where(music =>
+                            music != null &&
+                            music.type == criticalTask.MusicType &&
+                            music.priorityRange.X < criticalTask.Priority &&
+                            music.priorityRange.Y > criticalTask.Priority).ToList();
+
+                    if (suitableClips.Count > 0) return suitableClips;
                 }
-            else if (Character.Controlled != null && Level.Loaded != null && Level.Loaded.Ruins!=null && Level.Loaded.Ruins.Any(r => r.Area.Contains(Character.Controlled.WorldPosition)))
-            {
-                return musicClips.Where(x => x != null && x.type == "ruins").ToList();
-            }
-            else if (Submarine.MainSub != null && Submarine.MainSub.AtDamageDepth)
-            {
-                return musicClips.Where(x => x != null && x.type == "deep").ToList();
-            }
-            else if (criticalTask == null)
-            {
-                return musicClips.Where(x => x != null && x.type == "default").ToList();
             }
 
-            return musicClips.Where(x =>
+            return musicClips.Where(music => music != null && music.type == musicType).ToList();
-                x != null &&
-                x.type == criticalTask.MusicType &&
-                x.priorityRange.X < criticalTask.Priority &&
-                x.priorityRange.Y > criticalTask.Priority).ToList();
-            
         }
 
         public static void PlaySplashSound(Vector2 worldPosition, float strength)