starting work on enemy hearing

scripts/EnemySearch.gd

@@ -10,6 +10,10 @@ func Enter():
 	search_point()
 	search_timer = SEARCH_TIME_MAX
 
+func Exit():
+	enemy.player_last_seen = null
+	enemy.points_of_interest = []
+
 func Update(delta: float):
 	super(delta)
 	
@@ -19,6 +23,7 @@ func Update(delta: float):
 		Transitioned.emit(self,"idle")
 	
 	attack_on_sight()
+	search_for_suspicious_sounds()
 	search_point()
 	
 	if enemy.global_position.distance_to(move_target_adj()) < 1: