Improve aim assist target stickiness

controllers/FireStickController.gd

@@ -104,9 +104,16 @@ func aim(direction: Vector2) -> void:
 func aim_at(point: Vector2) -> void:
 	if fleet == null:
 		return
-	aim_point = point
+	var origin: Vector2 = fleet.get_centroid()
+	var reach: float = guide_range()
+	# The reticle resolves once from the fleet centre, so the player's cursor
+	# visibly sticks. Hulls keep the raw point and resolve it from their own
+	# muzzle/range below; a short-range ship must not bend toward something it
+	# cannot actually reach (#172).
+	aim_point = WEAPON_COMPONENT.assisted_point(get_tree(), origin, point, reach) \
+		if reach > 0.0 else point
 	has_aim = true
-	aim_direction = point - fleet.get_centroid()
+	aim_direction = aim_point - origin
 	for ship in fleet.ships:
 		if not is_instance_valid(ship):
 			continue
@@ -148,10 +155,9 @@ func _draw() -> void:
 	if reach <= 0.0:
 		return
 	var origin: Vector2 = fleet.get_centroid()
-	# Drawn along the heading a shot will ACTUALLY take, assist included, so
-	# the line keeps telling the truth about where fire is going (#89).
-	var heading: Vector2 = WEAPON_COMPONENT.assisted_heading(get_tree(), origin,
-		aim_direction, reach)
+	# aim_at() has already resolved the shared assisted point, so the line and
+	# reticle show the position that every in-range hull resolves toward (#181).
+	var heading: Vector2 = aim_direction.normalized()
 	# #172: the line stops at the aimed PLACE when that is inside the guns'
 	# reach. Running it on to full range past a point the fleet is converging
 	# on would be drawing a direction again, which is what the ticket took