Optimize PortMaster low-memory profile

ui/game_ui.gd

@@ -1723,6 +1723,10 @@ func get_title_screen() -> TitleScreenType:
 	return _title_screen
 
 
+func set_light_performance_profile(light_profile: bool) -> void:
+	_player_menu.set_light_performance_profile(light_profile)
+
+
 func set_effective_ui_pixel_size(pixel_size: int) -> void:
 	_title_settings_panel.set_effective_ui_pixel_size(pixel_size)
 	_pause_settings_panel.set_effective_ui_pixel_size(pixel_size)

ui/player_menu.gd

@@ -149,6 +149,7 @@ const BAG_STORAGE_COLUMNS: int = 5
 const BAG_STORAGE_MINIMUM_SLOTS: int = 15
 const SALE_CONFIRMATION_SIZE := Vector2(520.0, 190.0)
 const CONTROLLER_PICKUP_HOLD_SECONDS: float = 0.42
+const LIGHT_COOLER_WATER_COLOR := Color(0.037, 0.27, 0.375, 1.0)
 
 @onready var _navigation_cluster: BubbleClusterType = %NavigationCluster
 @onready var _presentation_scale_root: Control = %PlayerMenuPresentationScaleRoot
@@ -253,6 +254,7 @@ var _sale_buyer_override: FishBuyerProfileType
 var _shop_cooler_context_active: bool = false
 var _cooler_original_parent: Node
 var _cooler_original_index: int = -1
+var _authored_cooler_water_material: ShaderMaterial
 var _confirmation_original_parent: Node
 var _confirmation_original_index: int = -1
 var _catalog: FishPoolType
@@ -325,6 +327,9 @@ var _motion_elapsed: float = 0.0
 
 
 func _ready() -> void:
+	_authored_cooler_water_material = (
+		_cooler_water_surface.material as ShaderMaterial
+	)
 	_configure_inventory_transition_group()
 	_cooler_original_parent = _cooler_page.get_parent()
 	_cooler_original_index = _cooler_page.get_index()
@@ -445,6 +450,21 @@ func _update_cooler_water_mask() -> void:
 	)
 
 
+func set_light_performance_profile(light_profile: bool) -> void:
+	_cooler_water_surface.material = (
+		null if light_profile else _authored_cooler_water_material
+	)
+	_cooler_water_surface.color = (
+		LIGHT_COOLER_WATER_COLOR if light_profile else Color.WHITE
+	)
+	if not light_profile:
+		_update_cooler_water_mask()
+
+
+func is_cooler_water_effect_enabled() -> bool:
+	return _cooler_water_surface.material is ShaderMaterial
+
+
 func setup(
 	player: PlayerType,
 	inventory: FishInventoryType,

ui/profile_preview.tscn

@@ -18,7 +18,7 @@ script = ExtResource("1")
 [node name="Viewport" type="SubViewport" parent="."]
 transparent_bg = true
 size = Vector2i(320, 330)
-render_target_update_mode = 4
+render_target_update_mode = 2
 world_3d = SubResource("PreviewWorld")
 
 [node name="WorldEnvironment" type="WorldEnvironment" parent="Viewport"]

ui/title_screen.gd

@@ -155,6 +155,7 @@ var _decorative_bubbles: Array[TextureRect] = []
 var _decorative_bubble_tweens: Dictionary[int, Tween] = {}
 var _transition_bubble_ids: Dictionary[int, bool] = {}
 var _pending_cluster_bubbles: int = 0
+var _minimal_presentation: bool = false
 var _awaiting_start_input: bool = false
 var _start_prompt_elapsed: float = 0.0
 var _navigation_focus_active: bool = false
@@ -260,6 +261,14 @@ func setup(
 	_begin_title_entry()
 
 
+func set_minimal_presentation(enabled: bool) -> void:
+	_minimal_presentation = enabled
+	if _minimal_presentation:
+		_stop_decorative_presentation()
+	elif visible:
+		_start_decorative_presentation()
+
+
 func reopen() -> void:
 	_cancel_title_entry_transition()
 	_cancel_title_settings_transition()
@@ -1513,6 +1522,7 @@ func _start_decorative_presentation() -> void:
 		not _decorative_presentation_ready
 		or not visible
 		or _decorative_presentation_active
+		or _minimal_presentation
 	):
 		return
 	_decorative_generation += 1
@@ -1977,7 +1987,11 @@ func _get_idle_decorative_bubble_count() -> int:
 
 
 func _emit_navigation_bubble_flurry() -> void:
-	if not _decorative_presentation_active or not visible:
+	if (
+		_minimal_presentation
+		or not _decorative_presentation_active
+		or not visible
+	):
 		return
 	var bubble_count: int = _decorative_rng.randi_range(
 		TRANSITION_BUBBLE_COUNT_MIN,