Add fishing shop and persistent upgrades

fishing/fishing_spot.gd

@@ -13,6 +13,9 @@ const ItemCatalogType = preload("res://items/item_catalog.gd")
 const ItemDataType = preload("res://items/item_data.gd")
 const PlayerBagType = preload("res://inventory/player_bag.gd")
 const PlayerHotbarType = preload("res://inventory/player_hotbar.gd")
+const PlayerFishingUpgradesType = preload(
+	"res://progression/player_fishing_upgrades.gd"
+)
 const PlayerType = preload("res://player/player.gd")
 const FishableWaterRegionType = preload(
 	"res://world/fishable_water_region.gd"
@@ -92,6 +95,7 @@ var _local_collection_log: CollectionLogType
 var _local_bag: PlayerBagType
 var _local_hotbar: PlayerHotbarType
 var _item_catalog: ItemCatalogType
+var _fishing_upgrades: PlayerFishingUpgradesType
 var _active_player: PlayerType
 var _state_time_remaining: float = 0.0
 var _cast_charge: float = 0.0
@@ -132,6 +136,7 @@ func setup(
 	local_bag: PlayerBagType,
 	local_hotbar: PlayerHotbarType,
 	item_catalog: ItemCatalogType,
+	fishing_upgrades: PlayerFishingUpgradesType,
 ) -> void:
 	_local_player = local_player
 	_local_inventory = local_inventory
@@ -139,6 +144,7 @@ func setup(
 	_local_bag = local_bag
 	_local_hotbar = local_hotbar
 	_item_catalog = item_catalog
+	_fishing_upgrades = fishing_upgrades
 
 
 func can_open_player_menu() -> bool:
@@ -165,6 +171,23 @@ func can_open_system_menu() -> bool:
 	)
 
 
+func can_open_fishing_shop() -> bool:
+	return (
+		_gameplay_input_enabled
+		and not _external_input_blocked
+		and _local_menu_input_owners.is_empty()
+		and state == FishingState.READY
+	)
+
+
+func is_ready_for_shop_transaction() -> bool:
+	return (
+		_gameplay_input_enabled
+		and not _external_input_blocked
+		and state == FishingState.READY
+	)
+
+
 func can_change_hotbar_selection() -> bool:
 	return (
 		_gameplay_input_enabled
@@ -595,8 +618,16 @@ func _activate_bite() -> void:
 	_presentation.begin_reeling()
 	_catch_controller.start_encounter(
 		_selected_fish.catch_profile,
-		_active_player.reel_speed,
+		_active_player.reel_speed * (
-		_active_player.click_power
+			_fishing_upgrades.get_reel_speed_multiplier()
+			if _fishing_upgrades != null
+			else 1.0
+		),
+		(
+			_fishing_upgrades.get_barrier_damage()
+			if _fishing_upgrades != null
+			else _active_player.click_power
+		)
 	)
 	_catch_controller.set_reel_input(
 		Input.is_action_pressed("fish_primary")

items/catalog/basic_fishing_rod.tres

@@ -1,16 +1,7 @@
-[gd_resource type="Resource" script_class="ItemData" load_steps=4 format=3]
+[gd_resource type="Resource" script_class="ItemData" load_steps=3 format=3]
 
 [ext_resource type="Script" path="res://items/item_data.gd" id="1_script"]
-
+[ext_resource type="Texture2D" path="res://items/icons/placeholder/basic_fishing_rod.svg" id="2_icon"]
-[sub_resource type="Gradient" id="Gradient_rod"]
-colors = PackedColorArray(0.302, 0.184, 0.11, 1, 0.957, 0.827, 0.369, 1, 0.439, 0.839, 0.82, 1)
-
-[sub_resource type="GradientTexture2D" id="GradientTexture_rod"]
-gradient = SubResource("Gradient_rod")
-width = 128
-height = 128
-fill_from = Vector2(0.15, 0.85)
-fill_to = Vector2(0.85, 0.15)
 
 [resource]
 script = ExtResource("1_script")
@@ -18,7 +9,7 @@ item_id = &"basic_fishing_rod"
 display_name = "Basic Fishing Rod"
 description = "A dependable starter rod. Select it to cast."
 category = 0
-icon = SubResource("GradientTexture_rod")
+icon = ExtResource("2_icon")
 stackable = false
 max_stack = 1
 usable = true

items/icons/placeholder/barrier_power_upgrade.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <rect x="34" y="10" width="20" height="44" rx="3" fill="#f06b70" stroke="#17243a" stroke-width="5"/>
+  <path d="M44 12 l-4 12 8 6 -7 10 4 12" fill="none" stroke="#fff3d4" stroke-width="4" stroke-linejoin="round"/>
+  <path d="M9 10 C26 16 26 35 17 44 q-7 8 3 11" fill="none" stroke="#17243a" stroke-width="5" stroke-linecap="round"/>
+  <path d="M18 55 q9-2 8-10" fill="none" stroke="#17243a" stroke-width="5" stroke-linecap="round"/>
+</svg>

items/icons/placeholder/barrier_power_upgrade.svg.import

@@ -0,0 +1,43 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cgi121cdibqih"
+path="res://.godot/imported/barrier_power_upgrade.svg-d2005297b890ea371f8e38453bbffc4c.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://items/icons/placeholder/barrier_power_upgrade.svg"
+dest_files=["res://.godot/imported/barrier_power_upgrade.svg-d2005297b890ea371f8e38453bbffc4c.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

items/icons/placeholder/basic_fishing_rod.svg

@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <g fill="none" stroke="#17243a" stroke-width="5" stroke-linecap="round" stroke-linejoin="round">
+    <path d="M13 53 L48 12"/>
+    <path d="M48 12 C57 21 56 35 50 43"/>
+    <path d="M50 43 q-5 7 2 9"/>
+  </g>
+  <rect x="8" y="47" width="14" height="8" rx="2" fill="#8b5a2b" stroke="#17243a" stroke-width="4" transform="rotate(-49 15 51)"/>
+  <circle cx="29" cy="35" r="7" fill="#54c7c0" stroke="#17243a" stroke-width="4"/>
+</svg>

items/icons/placeholder/basic_fishing_rod.svg.import

@@ -0,0 +1,43 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://c6krnuo5lp861"
+path="res://.godot/imported/basic_fishing_rod.svg-bc9101c1a69623deb55f1b3189ae4567.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://items/icons/placeholder/basic_fishing_rod.svg"
+dest_files=["res://.godot/imported/basic_fishing_rod.svg-bc9101c1a69623deb55f1b3189ae4567.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

items/icons/placeholder/fish_coin.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <circle cx="32" cy="32" r="26" fill="#ffd25a" stroke="#17243a" stroke-width="5"/>
+  <ellipse cx="31" cy="32" rx="14" ry="9" fill="#54c7c0" stroke="#17243a" stroke-width="4"/>
+  <path d="M44 32 l10-9 v18 z" fill="#54c7c0" stroke="#17243a" stroke-width="4" stroke-linejoin="round"/>
+  <circle cx="25" cy="29" r="2.5" fill="#17243a"/>
+</svg>

items/icons/placeholder/fish_coin.svg.import

@@ -0,0 +1,43 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://trqvs4dgd4rt"
+path="res://.godot/imported/fish_coin.svg-9d00b5918d94a555938a84ee65e06386.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://items/icons/placeholder/fish_coin.svg"
+dest_files=["res://.godot/imported/fish_coin.svg-9d00b5918d94a555938a84ee65e06386.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

items/icons/placeholder/reel_speed_upgrade.svg

@@ -0,0 +1,12 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <g fill="none" stroke="#17243a" stroke-width="5" stroke-linecap="round" stroke-linejoin="round">
+    <circle cx="25" cy="34" r="14" fill="#54c7c0"/>
+    <circle cx="25" cy="34" r="4"/>
+    <path d="M36 24 l8-8"/>
+    <path d="M43 16 l7 7"/>
+    <path d="M40 38 h16"/>
+    <path d="M50 31 l7 7 -7 7"/>
+    <path d="M9 14 h13"/>
+    <path d="M6 23 h11"/>
+  </g>
+</svg>

items/icons/placeholder/reel_speed_upgrade.svg.import

@@ -0,0 +1,43 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://c2hal1gkmnuqa"
+path="res://.godot/imported/reel_speed_upgrade.svg-6bce0cfdbf18895938d0bcb4850467c8.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://items/icons/placeholder/reel_speed_upgrade.svg"
+dest_files=["res://.godot/imported/reel_speed_upgrade.svg-6bce0cfdbf18895938d0bcb4850467c8.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

main/main.gd

@@ -20,9 +20,14 @@ const TitleScreenType = preload("res://ui/title_screen.gd")
 const PauseMenuType = preload("res://ui/pause_menu.gd")
 const ItemCatalogType = preload("res://items/item_catalog.gd")
 const ItemDataType = preload("res://items/item_data.gd")
+const FishingShopType = preload("res://ui/fishing_shop.gd")
+const FishingShopInteractionType = preload(
+	"res://world/fishing_shop_interaction.gd"
+)
 
 @export var fish_catalog: FishPoolType
 @export var pelican_buyer_profile: FishBuyerProfileType
+@export var main_shop_buyer_profile: FishBuyerProfileType
 @export var item_catalog: ItemCatalogType
 
 @onready var _test_world: TestWorldType = $TestWorld
@@ -34,6 +39,7 @@ const ItemDataType = preload("res://items/item_data.gd")
 @onready var _settings_manager: PlayerSettingsManagerType = %PlayerSettingsManager
 
 var _gameplay_started: bool = false
+var _shop_interaction: FishingShopInteractionType
 
 
 func _ready() -> void:
@@ -43,6 +49,11 @@ func _ready() -> void:
 	)
 	_player.bag.setup(item_catalog)
 	_player.hotbar.setup(_player.bag, item_catalog)
+	_shop_interaction = _test_world.get_fishing_shop()
+	_shop_interaction.setup_local_player(_player)
+	_shop_interaction.local_player_range_changed.connect(
+		_on_shop_range_changed
+	)
 	_save_manager.setup(
 		_player.inventory,
 		_player.collection_log,
@@ -50,7 +61,8 @@ func _ready() -> void:
 		fish_catalog,
 		_player.bag,
 		_player.hotbar,
-		item_catalog
+		item_catalog,
+		_player.fishing_upgrades
 	)
 	_save_manager.set_autosave_enabled(false)
 	_fishing_spot.setup(
@@ -59,7 +71,8 @@ func _ready() -> void:
 		_player.collection_log,
 		_player.bag,
 		_player.hotbar,
-		item_catalog
+		item_catalog,
+		_player.fishing_upgrades
 	)
 	_game_ui.setup(
 		_player,
@@ -72,7 +85,10 @@ func _ready() -> void:
 		_fishing_spot,
 		_player.bag,
 		_player.hotbar,
-		item_catalog
+		item_catalog,
+		main_shop_buyer_profile,
+		_player.fishing_upgrades,
+		_shop_interaction
 	)
 	_water_recovery.setup(
 		_player,
@@ -135,6 +151,10 @@ func _input(event: InputEvent) -> void:
 	if title_screen.visible or not _gameplay_started:
 		return
 	var pause_menu: PauseMenuType = _game_ui.get_pause_menu()
+	var fishing_shop: FishingShopType = _game_ui.get_fishing_shop()
+	if fishing_shop.consume_escape():
+		get_viewport().set_input_as_handled()
+		return
 	if pause_menu.handle_escape():
 		get_viewport().set_input_as_handled()
 		return
@@ -153,6 +173,27 @@ func _input(event: InputEvent) -> void:
 		get_viewport().set_input_as_handled()
 
 
+func _unhandled_input(event: InputEvent) -> void:
+	if (
+		not _gameplay_started
+		or not event.is_action_pressed("interact")
+		or (event is InputEventKey and event.echo)
+	):
+		return
+	if (
+		_shop_interaction != null
+		and _shop_interaction.is_local_player_in_range()
+		and _fishing_spot.can_open_fishing_shop()
+		and _game_ui.get_fishing_shop().open_shop()
+	):
+		_game_ui.set_shop_prompt_visible(false)
+		get_viewport().set_input_as_handled()
+
+
+func _process(_delta: float) -> void:
+	_game_ui.set_shop_prompt_visible(_can_show_shop_prompt())
+
+
 func _apply_runtime_settings(settings: PlayerSettingsType) -> void:
 	if settings == null:
 		return
@@ -207,6 +248,7 @@ func _on_reset_progress_requested() -> void:
 func _on_water_recovery_starting() -> void:
 	_game_ui.close_player_menu_for_water_recovery()
 	_game_ui.get_pause_menu().close_for_water_recovery()
+	_game_ui.get_fishing_shop().close_for_water_recovery()
 
 
 func _on_active_hotbar_item_changed(
@@ -237,3 +279,20 @@ func _on_quit_requested() -> void:
 	if _gameplay_started:
 		_save_manager.save_if_dirty()
 	get_tree().quit()
+
+
+func _on_shop_range_changed(in_range: bool) -> void:
+	if not in_range:
+		_game_ui.get_fishing_shop().close_for_range_exit()
+	_game_ui.set_shop_prompt_visible(_can_show_shop_prompt())
+
+
+func _can_show_shop_prompt() -> bool:
+	return (
+		_gameplay_started
+		and _shop_interaction != null
+		and _shop_interaction.is_local_player_in_range()
+		and not _game_ui.get_fishing_shop().visible
+		and not _water_recovery.is_recovery_active()
+		and _fishing_spot.can_open_fishing_shop()
+	)

main/main.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=12 format=3]
+[gd_scene load_steps=13 format=3]
 
 [ext_resource type="PackedScene" path="res://world/test_world.tscn" id="1_world"]
 [ext_resource type="PackedScene" path="res://player/player.tscn" id="2_player"]
@@ -11,11 +11,13 @@
 [ext_resource type="Script" path="res://save/player_save_manager.gd" id="9_save"]
 [ext_resource type="Script" path="res://settings/player_settings_manager.gd" id="10_settings"]
 [ext_resource type="Resource" path="res://items/catalog/item_catalog.tres" id="11_items"]
+[ext_resource type="Resource" path="res://economy/buyers/main_fishing_shop.tres" id="12_main_shop"]
 
 [node name="Main" type="Node3D"]
 script = ExtResource("3_main")
 fish_catalog = ExtResource("6_pool")
 pelican_buyer_profile = ExtResource("7_pelicans")
+main_shop_buyer_profile = ExtResource("12_main_shop")
 item_catalog = ExtResource("11_items")
 
 [node name="TestWorld" parent="." instance=ExtResource("1_world")]

player/player.gd

@@ -8,6 +8,9 @@ const FishSaleServiceType = preload("res://economy/fish_sale_service.gd")
 const PlayerWalletType = preload("res://economy/player_wallet.gd")
 const PlayerBagType = preload("res://inventory/player_bag.gd")
 const PlayerHotbarType = preload("res://inventory/player_hotbar.gd")
+const PlayerFishingUpgradesType = preload(
+	"res://progression/player_fishing_upgrades.gd"
+)
 
 class ShowcaseCameraSnapshot:
 	extends RefCounted
@@ -71,6 +74,7 @@ class ShowcaseCameraSnapshot:
 @onready var fish_sale_service: FishSaleServiceType = %FishSaleService
 @onready var bag: PlayerBagType = %Bag
 @onready var hotbar: PlayerHotbarType = %Hotbar
+@onready var fishing_upgrades: PlayerFishingUpgradesType = %FishingUpgrades
 @onready var _cast_origin: Marker3D = %CastOrigin
 @onready var _fishing_rod: Node3D = %FishingRod
 @onready var _fishing_rod_tip: Marker3D = %FishingRodTip

player/player.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=15 format=3]
+[gd_scene load_steps=16 format=3]
 
 [ext_resource type="Script" path="res://player/player.gd" id="1_script"]
 [ext_resource type="Script" path="res://inventory/fish_inventory.gd" id="2_inventory"]
@@ -7,6 +7,7 @@
 [ext_resource type="Script" path="res://economy/fish_sale_service.gd" id="5_sale_service"]
 [ext_resource type="Script" path="res://inventory/player_bag.gd" id="6_bag"]
 [ext_resource type="Script" path="res://inventory/player_hotbar.gd" id="7_hotbar"]
+[ext_resource type="Script" path="res://progression/player_fishing_upgrades.gd" id="8_upgrades"]
 
 [sub_resource type="CapsuleShape3D" id="PlayerShape"]
 radius = 0.45
@@ -98,6 +99,10 @@ script = ExtResource("6_bag")
 unique_name_in_owner = true
 script = ExtResource("7_hotbar")
 
+[node name="FishingUpgrades" type="Node" parent="."]
+unique_name_in_owner = true
+script = ExtResource("8_upgrades")
+
 [node name="CatchDisplayAnchor" type="Marker3D" parent="Visuals"]
 unique_name_in_owner = true
 position = Vector3(0, 1.45, -1.15)

playtest/README-PLAYTEST.txt

@@ -35,6 +35,7 @@ Zoom camera                  Shift + mouse wheel
 Cast / withdraw / reel       Left mouse
 Cooler, Bag, and Logbook     Tab
 Game Menu / back             Escape
+Open Fishing Shop            E while near the shop
 
 FISHING
 
@@ -46,6 +47,12 @@ FISHING
 - At barriers, use distinct left-click presses to damage the barrier.
 - Do not let the red chase meter catch the green meter.
 - Accessibility auto-click can be enabled in Settings.
+- Approach the bright Fishing Shop booth and press E to open it.
+- The Fishing Shop buys one Cooler fish at a time for full base value.
+- Reel Speed upgrades increase authoritative green reeling progress.
+- Barrier Power upgrades increase damage per valid barrier action.
+- Shop upgrades persist in the local progression save.
+- Escape closes shop confirmations before closing the shop itself.
 
 FEATURES TO TRY
 
@@ -59,6 +66,7 @@ FEATURES TO TRY
 - Cooler, Bag, Logbook, favorites, and sorting
 - Basic Fishing Rod equipment and the 1–9 hotbar
 - Pelican selling and wallet updates
+- Physical Fishing Shop sales and persistent fishing upgrades
 - Save, Continue, New Game, and Delete Save
 - Game Menu and persistent camera settings
 - Water-entry recovery from several shores

progression/player_fishing_upgrades.gd

@@ -0,0 +1,145 @@
+class_name PlayerFishingUpgrades
+extends Node
+
+const PlayerWalletType = preload("res://economy/player_wallet.gd")
+
+signal upgrades_changed(reel_speed_level: int, barrier_power_level: int)
+
+const MAX_REEL_SPEED_LEVEL: int = 5
+const MAX_BARRIER_POWER_LEVEL: int = 3
+const REEL_SPEED_COSTS: Array[int] = [50, 125, 300, 650, 1250]
+const BARRIER_POWER_COSTS: Array[int] = [100, 275, 700]
+
+var _reel_speed_level: int = 0
+var _barrier_power_level: int = 0
+
+
+func get_reel_speed_level() -> int:
+	return _reel_speed_level
+
+
+func get_barrier_power_level() -> int:
+	return _barrier_power_level
+
+
+func get_reel_speed_multiplier() -> float:
+	return 1.0 + float(_reel_speed_level) * 0.10
+
+
+func get_barrier_damage() -> int:
+	return _barrier_power_level + 1
+
+
+func get_next_reel_speed_cost() -> int:
+	if _reel_speed_level >= MAX_REEL_SPEED_LEVEL:
+		return -1
+	return REEL_SPEED_COSTS[_reel_speed_level]
+
+
+func get_next_barrier_power_cost() -> int:
+	if _barrier_power_level >= MAX_BARRIER_POWER_LEVEL:
+		return -1
+	return BARRIER_POWER_COSTS[_barrier_power_level]
+
+
+func can_purchase_reel_speed(wallet: PlayerWalletType) -> bool:
+	var cost: int = get_next_reel_speed_cost()
+	return wallet != null and cost >= 0 and wallet.can_afford(cost)
+
+
+func can_purchase_barrier_power(wallet: PlayerWalletType) -> bool:
+	var cost: int = get_next_barrier_power_cost()
+	return wallet != null and cost >= 0 and wallet.can_afford(cost)
+
+
+func purchase_reel_speed(wallet: PlayerWalletType) -> bool:
+	return _purchase_level(true, wallet)
+
+
+func purchase_barrier_power(wallet: PlayerWalletType) -> bool:
+	return _purchase_level(false, wallet)
+
+
+func reset_to_defaults() -> void:
+	restore_levels(0, 0)
+
+
+func restore_levels(
+	reel_speed_level: int,
+	barrier_power_level: int,
+) -> bool:
+	var validated_reel: int = clampi(
+		reel_speed_level,
+		0,
+		MAX_REEL_SPEED_LEVEL
+	)
+	var validated_barrier: int = clampi(
+		barrier_power_level,
+		0,
+		MAX_BARRIER_POWER_LEVEL
+	)
+	var changed: bool = (
+		_reel_speed_level != validated_reel
+		or _barrier_power_level != validated_barrier
+	)
+	_reel_speed_level = validated_reel
+	_barrier_power_level = validated_barrier
+	if changed:
+		upgrades_changed.emit(
+			_reel_speed_level,
+			_barrier_power_level
+		)
+	return true
+
+
+func restore_from_save(data: Dictionary) -> void:
+	var reel_value: Variant = data.get("reel_speed_level", 0)
+	var barrier_value: Variant = data.get("barrier_power_level", 0)
+	restore_levels(
+		int(reel_value) if reel_value is int or reel_value is float else 0,
+		int(barrier_value)
+		if barrier_value is int or barrier_value is float
+		else 0
+	)
+
+
+func to_save_data() -> Dictionary:
+	return {
+		"reel_speed_level": _reel_speed_level,
+		"barrier_power_level": _barrier_power_level,
+	}
+
+
+func _purchase_level(
+	is_reel_speed: bool,
+	wallet: PlayerWalletType,
+) -> bool:
+	if wallet == null:
+		return false
+	var current_level: int = (
+		_reel_speed_level if is_reel_speed else _barrier_power_level
+	)
+	var maximum_level: int = (
+		MAX_REEL_SPEED_LEVEL
+		if is_reel_speed
+		else MAX_BARRIER_POWER_LEVEL
+	)
+	if current_level < 0 or current_level >= maximum_level:
+		return false
+	var costs: Array[int] = (
+		REEL_SPEED_COSTS if is_reel_speed else BARRIER_POWER_COSTS
+	)
+	var cost: int = costs[current_level]
+	if cost < 0 or not wallet.can_afford(cost):
+		return false
+	if not wallet.debit(cost):
+		return false
+	if is_reel_speed:
+		_reel_speed_level = current_level + 1
+	else:
+		_barrier_power_level = current_level + 1
+	upgrades_changed.emit(
+		_reel_speed_level,
+		_barrier_power_level
+	)
+	return true

progression/player_fishing_upgrades.gd.uid

@@ -0,0 +1 @@
+uid://c6xd5laffvicg

save/player_save_manager.gd

@@ -11,8 +11,11 @@ const ItemCatalogType = preload("res://items/item_catalog.gd")
 const OwnedItemType = preload("res://items/owned_item.gd")
 const PlayerBagType = preload("res://inventory/player_bag.gd")
 const PlayerHotbarType = preload("res://inventory/player_hotbar.gd")
+const PlayerFishingUpgradesType = preload(
+	"res://progression/player_fishing_upgrades.gd"
+)
 
-const SAVE_VERSION: int = 2
+const SAVE_VERSION: int = 3
 const BASIC_ROD_ID: StringName = &"basic_fishing_rod"
 const SAVE_PATH: String = "user://player_save.json"
 const TEMP_PATH: String = "user://player_save.json.tmp"
@@ -29,6 +32,8 @@ class LoadSnapshot:
 	var bag_items: Array[OwnedItemType] = []
 	var hotbar_slots: Array[StringName] = []
 	var selected_hotbar_slot: int = 0
+	var reel_speed_level: int = 0
+	var barrier_power_level: int = 0
 
 
 @export_range(0.05, 5.0, 0.05) var autosave_delay: float = 0.5
@@ -40,6 +45,7 @@ var _catalog: FishPoolType
 var _bag: PlayerBagType
 var _hotbar: PlayerHotbarType
 var _item_catalog: ItemCatalogType
+var _fishing_upgrades: PlayerFishingUpgradesType
 var _autosave_timer: Timer
 var _is_configured: bool = false
 var _is_restoring: bool = false
@@ -63,6 +69,7 @@ func setup(
 	bag: PlayerBagType,
 	hotbar: PlayerHotbarType,
 	item_catalog: ItemCatalogType,
+	fishing_upgrades: PlayerFishingUpgradesType,
 ) -> void:
 	_inventory = inventory
 	_collection_log = collection_log
@@ -71,6 +78,7 @@ func setup(
 	_bag = bag
 	_hotbar = hotbar
 	_item_catalog = item_catalog
+	_fishing_upgrades = fishing_upgrades
 	_is_configured = (
 		_inventory != null
 		and _collection_log != null
@@ -79,6 +87,7 @@ func setup(
 		and _bag != null
 		and _hotbar != null
 		and _item_catalog != null
+		and _fishing_upgrades != null
 	)
 	if not _is_configured:
 		push_error("PlayerSaveManager setup is missing required references.")
@@ -101,6 +110,10 @@ func setup(
 		_hotbar.selected_slot_changed.connect(
 			_on_selected_hotbar_slot_changed
 		)
+	if not _fishing_upgrades.upgrades_changed.is_connected(
+		_on_upgrades_changed
+	):
+		_fishing_upgrades.upgrades_changed.connect(_on_upgrades_changed)
 
 
 func load_player_data() -> bool:
@@ -166,6 +179,10 @@ func load_player_data() -> bool:
 		snapshot.hotbar_slots,
 		snapshot.selected_hotbar_slot
 	)
+	var upgrades_restored: bool = _fishing_upgrades.restore_levels(
+		snapshot.reel_speed_level,
+		snapshot.barrier_power_level
+	)
 	_is_restoring = false
 	if (
 		not inventory_restored
@@ -173,6 +190,7 @@ func load_player_data() -> bool:
 		or not wallet_restored
 		or not bag_restored
 		or not hotbar_restored
+		or not upgrades_restored
 	):
 		push_error("Validated player save could not be restored.")
 		return false
@@ -381,6 +399,7 @@ func _build_save_dictionary() -> Dictionary:
 			"selected_slot": _hotbar.get_selected_slot(),
 			"slots": serialized_slots,
 		},
+		"upgrades": _fishing_upgrades.to_save_data(),
 	}
 
 
@@ -398,6 +417,13 @@ func _build_load_snapshot(save_data: Dictionary) -> LoadSnapshot:
 	var inventory_data: Dictionary = save_data["inventory"]
 	var bag_data: Dictionary = save_data["bag"]
 	var hotbar_data: Dictionary = save_data["hotbar"]
+	var upgrades_data: Dictionary = {}
+	if typeof(save_data.get("upgrades")) == TYPE_DICTIONARY:
+		upgrades_data = save_data["upgrades"]
+	else:
+		push_warning(
+			"Saved fishing upgrades were missing or invalid; using defaults."
+		)
 	if (
 		not wallet_data.has("balance")
 		or typeof(collection_data.get("discovered_fish_ids")) != TYPE_ARRAY
@@ -564,6 +590,16 @@ func _build_load_snapshot(save_data: Dictionary) -> LoadSnapshot:
 		0,
 		PlayerHotbarType.SLOT_COUNT - 1
 	)
+	snapshot.reel_speed_level = _read_upgrade_level(
+		upgrades_data.get("reel_speed_level"),
+		PlayerFishingUpgradesType.MAX_REEL_SPEED_LEVEL,
+		"reel_speed_level"
+	)
+	snapshot.barrier_power_level = _read_upgrade_level(
+		upgrades_data.get("barrier_power_level"),
+		PlayerFishingUpgradesType.MAX_BARRIER_POWER_LEVEL,
+		"barrier_power_level"
+	)
 	return snapshot
 
 
@@ -573,10 +609,28 @@ func _migrate_save(
 ) -> Dictionary:
 	if from_version == SAVE_VERSION:
 		return data
-	if from_version == 1:
+	if from_version < 1 or from_version > SAVE_VERSION:
-		var migrated: Dictionary = data.duplicate(true)
+		return {}
-		migrated["save_version"] = SAVE_VERSION
+	var migrated: Dictionary = data.duplicate(true)
-		migrated["bag"] = {
+	var current_version: int = from_version
+	while current_version < SAVE_VERSION:
+		match current_version:
+			1:
+				migrated = _migrate_version_1_to_2(migrated)
+			2:
+				migrated = _migrate_version_2_to_3(migrated)
+			_:
+				return {}
+		if migrated.is_empty():
+			return {}
+		current_version += 1
+	return migrated
+
+
+func _migrate_version_1_to_2(data: Dictionary) -> Dictionary:
+	var migrated: Dictionary = data.duplicate(true)
+	migrated["save_version"] = 2
+	migrated["bag"] = {
 			"items": [
 				{
 					"item_id": String(BASIC_ROD_ID),
@@ -584,16 +638,25 @@ func _migrate_save(
 				},
 			],
 		}
-		var slots: Array[String] = []
+	var slots: Array[String] = []
-		slots.resize(PlayerHotbarType.SLOT_COUNT)
+	slots.resize(PlayerHotbarType.SLOT_COUNT)
-		slots.fill("")
+	slots.fill("")
-		slots[0] = String(BASIC_ROD_ID)
+	slots[0] = String(BASIC_ROD_ID)
-		migrated["hotbar"] = {
+	migrated["hotbar"] = {
-			"selected_slot": 0,
+		"selected_slot": 0,
-			"slots": slots,
+		"slots": slots,
-		}
+	}
-		return migrated
+	return migrated
-	return {}
+
+
+func _migrate_version_2_to_3(data: Dictionary) -> Dictionary:
+	var migrated: Dictionary = data.duplicate(true)
+	migrated["save_version"] = 3
+	migrated["upgrades"] = {
+		"reel_speed_level": 0,
+		"barrier_power_level": 0,
+	}
+	return migrated
 
 
 func _mark_dirty() -> void:
@@ -623,6 +686,13 @@ func _on_selected_hotbar_slot_changed(
 	_mark_dirty()
 
 
+func _on_upgrades_changed(
+	_reel_speed_level: int,
+	_barrier_power_level: int,
+) -> void:
+	_mark_dirty()
+
+
 func _on_autosave_timeout() -> void:
 	if _is_dirty:
 		save_now()
@@ -677,6 +747,7 @@ func _restore_defaults() -> void:
 	_wallet.restore_balance(0)
 	_bag.replace_all_items(default_items)
 	_hotbar.replace_state(default_slots, 0)
+	_fishing_upgrades.reset_to_defaults()
 	_is_restoring = false
 	_is_dirty = false
 
@@ -702,6 +773,46 @@ func _read_integer(
 	return invalid_value
 
 
+func _read_upgrade_level(
+	value: Variant,
+	maximum_level: int,
+	field_name: String,
+) -> int:
+	var parsed_value: int = 0
+	var value_is_integer_like: bool = false
+	if typeof(value) == TYPE_INT:
+		parsed_value = int(value)
+		value_is_integer_like = true
+	elif typeof(value) == TYPE_FLOAT:
+		var float_value: float = float(value)
+		if is_finite(float_value) and is_equal_approx(
+			float_value,
+			round(float_value)
+		):
+			parsed_value = int(round(float_value))
+			value_is_integer_like = true
+	if not value_is_integer_like:
+		push_warning(
+			"Saved upgrade '%s' was invalid; using level 0." % field_name
+		)
+		return 0
+	if parsed_value < 0:
+		push_warning(
+			"Saved upgrade '%s' was below 0; clamped to 0." % field_name
+		)
+		return 0
+	if parsed_value > maximum_level:
+		push_warning(
+			(
+				"Saved upgrade '%s' exceeded the supported maximum; "
+				+ "clamped to %d."
+			)
+			% [field_name, maximum_level]
+		)
+		return maximum_level
+	return parsed_value
+
+
 func _rename_file(from_path: String, to_path: String) -> bool:
 	return DirAccess.rename_absolute(
 		ProjectSettings.globalize_path(from_path),

ui/fishing_shop.gd

@@ -0,0 +1,496 @@
+class_name FishingShop
+extends Control
+
+const INPUT_OWNER: StringName = &"fishing_shop"
+const MAIN_SHOP_BUYER_ID: StringName = &"main_fishing_shop"
+const FishBuyerProfileType = preload("res://economy/fish_buyer_profile.gd")
+const FishCatchType = preload("res://fish/fish_catch.gd")
+const FishInventoryType = preload("res://inventory/fish_inventory.gd")
+const FishSaleResultType = preload("res://economy/fish_sale_result.gd")
+const FishSaleServiceType = preload("res://economy/fish_sale_service.gd")
+const PlayerWalletType = preload("res://economy/player_wallet.gd")
+const FishingSpotType = preload("res://fishing/fishing_spot.gd")
+const PlayerFishingUpgradesType = preload(
+	"res://progression/player_fishing_upgrades.gd"
+)
+const PlayerType = preload("res://player/player.gd")
+const ShopInteractionType = preload(
+	"res://world/fishing_shop_interaction.gd"
+)
+
+signal menu_visibility_changed(is_open: bool)
+
+enum CloseReason {
+	USER,
+	RANGE_EXIT,
+	WATER_RECOVERY,
+	SESSION_END,
+	TEARDOWN,
+}
+
+@onready var _wallet_label: Label = %WalletLabel
+@onready var _fish_list: ItemList = %FishList
+@onready var _fish_empty: Label = %FishEmpty
+@onready var _fish_texture: TextureRect = %FishTexture
+@onready var _fish_name: Label = %FishName
+@onready var _fish_details: Label = %FishDetails
+@onready var _sell_button: Button = %SellButton
+@onready var _feedback: Label = %Feedback
+@onready var _reel_level: Label = %ReelLevel
+@onready var _reel_effect: Label = %ReelEffect
+@onready var _reel_cost: Label = %ReelCost
+@onready var _reel_purchase: Button = %ReelPurchase
+@onready var _barrier_level: Label = %BarrierLevel
+@onready var _barrier_effect: Label = %BarrierEffect
+@onready var _barrier_cost: Label = %BarrierCost
+@onready var _barrier_purchase: Button = %BarrierPurchase
+@onready var _confirmation: PanelContainer = %SaleConfirmation
+@onready var _confirmation_text: Label = %ConfirmationText
+@onready var _confirm_sale: Button = %ConfirmSale
+@onready var _cancel_sale: Button = %CancelSale
+
+var _player: PlayerType
+var _inventory: FishInventoryType
+var _wallet: PlayerWalletType
+var _sale_service: FishSaleServiceType
+var _buyer: FishBuyerProfileType
+var _upgrades: PlayerFishingUpgradesType
+var _fishing_spot: FishingSpotType
+var _interaction: ShopInteractionType
+var _selected_catch_id: StringName
+var _confirmation_catch_id: StringName
+var _prior_movement_enabled: bool = true
+var _prior_camera_enabled: bool = true
+var _prior_mouse_mode: Input.MouseMode = Input.MOUSE_MODE_VISIBLE
+var _snapshot_stored: bool = false
+var _mouse_snapshot_stored: bool = false
+var _generation: int = 0
+var _transaction_in_progress: bool = false
+var _closing: bool = false
+
+
+func _ready() -> void:
+	%CloseButton.pressed.connect(close_shop)
+	_fish_list.item_selected.connect(_on_fish_selected)
+	_sell_button.pressed.connect(_open_sale_confirmation)
+	_confirm_sale.pressed.connect(_on_confirm_sale)
+	_cancel_sale.pressed.connect(_close_sale_confirmation)
+	_reel_purchase.pressed.connect(_purchase_reel_speed)
+	_barrier_purchase.pressed.connect(_purchase_barrier_power)
+
+
+func setup(
+	player: PlayerType,
+	inventory: FishInventoryType,
+	wallet: PlayerWalletType,
+	sale_service: FishSaleServiceType,
+	buyer: FishBuyerProfileType,
+	upgrades: PlayerFishingUpgradesType,
+	fishing_spot: FishingSpotType,
+	interaction: ShopInteractionType,
+) -> void:
+	_player = player
+	_inventory = inventory
+	_wallet = wallet
+	_sale_service = sale_service
+	_buyer = buyer
+	_upgrades = upgrades
+	_fishing_spot = fishing_spot
+	_interaction = interaction
+	if not _inventory.catches_changed.is_connected(_on_inventory_changed):
+		_inventory.catches_changed.connect(_on_inventory_changed)
+	if not _wallet.balance_changed.is_connected(_on_wallet_changed):
+		_wallet.balance_changed.connect(_on_wallet_changed)
+	if not _upgrades.upgrades_changed.is_connected(_on_upgrades_changed):
+		_upgrades.upgrades_changed.connect(_on_upgrades_changed)
+	_refresh_all()
+
+
+func open_shop() -> bool:
+	if (
+		visible
+		or _player == null
+		or _interaction == null
+		or not _interaction.is_local_player_in_range()
+		or _fishing_spot == null
+		or not _fishing_spot.can_open_fishing_shop()
+		or _buyer == null
+		or not _buyer.is_valid()
+		or _buyer.id != MAIN_SHOP_BUYER_ID
+	):
+		return false
+	_generation += 1
+	_closing = false
+	_transaction_in_progress = false
+	_prior_movement_enabled = _player.is_movement_enabled()
+	_prior_camera_enabled = _player.is_camera_input_enabled()
+	_prior_mouse_mode = Input.mouse_mode
+	_snapshot_stored = true
+	_mouse_snapshot_stored = true
+	_player.set_movement_enabled(false)
+	_player.set_camera_input_enabled(false)
+	_fishing_spot.set_local_menu_input_suppressed(INPUT_OWNER, true)
+	Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
+	_feedback.text = ""
+	_close_sale_confirmation()
+	show()
+	_refresh_all()
+	%CloseButton.grab_focus()
+	menu_visibility_changed.emit(true)
+	return true
+
+
+func consume_escape() -> bool:
+	if not visible:
+		return false
+	if _confirmation.visible:
+		_close_sale_confirmation()
+	else:
+		close_shop()
+	return true
+
+
+func close_shop(
+	reason: CloseReason = CloseReason.USER,
+	restore_controls: bool = true,
+) -> void:
+	if not visible:
+		return
+	_closing = true
+	_generation += 1
+	_transaction_in_progress = false
+	_close_sale_confirmation()
+	_selected_catch_id = StringName()
+	hide()
+	get_viewport().gui_release_focus()
+	if _fishing_spot != null and is_instance_valid(_fishing_spot):
+		_fishing_spot.set_local_menu_input_suppressed(INPUT_OWNER, false)
+	if (
+		restore_controls
+		and _snapshot_stored
+		and _fishing_spot != null
+		and _fishing_spot.is_ready_for_shop_transaction()
+	):
+		_player.set_movement_enabled(_prior_movement_enabled)
+		_player.set_camera_input_enabled(_prior_camera_enabled)
+	_snapshot_stored = false
+	_apply_mouse_close_policy(reason)
+	_closing = false
+	menu_visibility_changed.emit(false)
+
+
+func close_for_range_exit() -> void:
+	close_shop(CloseReason.RANGE_EXIT)
+
+
+func close_for_water_recovery() -> void:
+	# Recovery emits its starting signal immediately before it captures the
+	# player's current control state. Restore our local snapshot synchronously
+	# so recovery captures the pre-shop state, then becomes the new authority
+	# before another frame can process gameplay input.
+	close_shop(CloseReason.WATER_RECOVERY, true)
+
+
+func close_for_session_end() -> void:
+	close_shop(CloseReason.SESSION_END, false)
+
+
+func _exit_tree() -> void:
+	if visible:
+		close_shop(CloseReason.TEARDOWN, false)
+
+
+func _refresh_all() -> void:
+	if not is_node_ready():
+		return
+	_refresh_wallet()
+	_refresh_fish_list()
+	_refresh_selected_fish()
+	_refresh_upgrades()
+
+
+func _refresh_wallet() -> void:
+	_wallet_label.text = (
+		"Wallet: $%d" % _wallet.get_balance()
+		if _wallet != null
+		else "Wallet: $0"
+	)
+
+
+func _refresh_fish_list() -> void:
+	_fish_list.clear()
+	var catches: Array[FishCatchType] = (
+		_inventory.get_all_catches() if _inventory != null else []
+	)
+	catches.sort_custom(
+		func(a: FishCatchType, b: FishCatchType) -> bool:
+			return a.catch_sequence > b.catch_sequence
+	)
+	var selected_index: int = -1
+	for fish_catch: FishCatchType in catches:
+		if fish_catch == null or not fish_catch.is_valid():
+			continue
+		var marker: String = "★ " if fish_catch.is_favorited else ""
+		var index: int = _fish_list.add_item(
+			"%s%s — %.2f lb"
+			% [marker, fish_catch.fish.display_name, fish_catch.weight_lb],
+			fish_catch.fish.display_texture
+		)
+		_fish_list.set_item_metadata(index, String(fish_catch.catch_id))
+		_fish_list.set_item_tooltip(
+			index,
+			"%s • %s"
+			% [
+				fish_catch.fish.get_rarity_name(),
+				"Favorited" if fish_catch.is_favorited else "Available",
+			]
+		)
+		if fish_catch.catch_id == _selected_catch_id:
+			selected_index = index
+	_fish_empty.visible = _fish_list.item_count == 0
+	if selected_index >= 0:
+		_fish_list.select(selected_index)
+	elif not _selected_catch_id.is_empty():
+		_selected_catch_id = StringName()
+
+
+func _refresh_selected_fish() -> void:
+	var fish_catch: FishCatchType = _get_selected_catch()
+	_fish_texture.texture = (
+		fish_catch.fish.display_texture if fish_catch != null else null
+	)
+	_fish_name.text = (
+		fish_catch.fish.display_name if fish_catch != null else "Select a fish"
+	)
+	if fish_catch == null:
+		_fish_details.text = "Choose one individual fish from your Cooler."
+		_sell_button.disabled = true
+		return
+	var offer: int = _buyer.get_offer(fish_catch.sale_value)
+	_fish_details.text = (
+		"%.2f lb • %s\nBase value: $%d\nMain-shop offer: $%d%s"
+		% [
+			fish_catch.weight_lb,
+			fish_catch.fish.get_rarity_name(),
+			fish_catch.sale_value,
+			offer,
+			"\nFavorited fish cannot be sold."
+			if fish_catch.is_favorited
+			else "",
+		]
+	)
+	_sell_button.disabled = (
+		fish_catch.is_favorited
+		or _transaction_in_progress
+		or _closing
+	)
+
+
+func _refresh_upgrades() -> void:
+	if _upgrades == null:
+		return
+	var reel_level: int = _upgrades.get_reel_speed_level()
+	var reel_cost: int = _upgrades.get_next_reel_speed_cost()
+	_reel_level.text = "Level %d" % reel_level
+	_reel_purchase.disabled = (
+		reel_cost < 0
+		or _transaction_in_progress
+		or _closing
+		or not _upgrades.can_purchase_reel_speed(_wallet)
+	)
+	if reel_cost < 0:
+		_reel_effect.text = "%.2f×" % _upgrades.get_reel_speed_multiplier()
+		_reel_cost.text = "MAX"
+	else:
+		_reel_effect.text = (
+			"%.2f× → %.2f×"
+			% [
+				_upgrades.get_reel_speed_multiplier(),
+				1.0 + float(reel_level + 1) * 0.10,
+			]
+		)
+		_reel_cost.text = "$%d" % reel_cost
+	_reel_purchase.text = "MAX" if reel_cost < 0 else "Purchase"
+	var barrier_level: int = _upgrades.get_barrier_power_level()
+	var barrier_cost: int = _upgrades.get_next_barrier_power_cost()
+	_barrier_level.text = "Level %d" % barrier_level
+	_barrier_purchase.disabled = (
+		barrier_cost < 0
+		or _transaction_in_progress
+		or _closing
+		or not _upgrades.can_purchase_barrier_power(_wallet)
+	)
+	if barrier_cost < 0:
+		_barrier_effect.text = "%d damage" % _upgrades.get_barrier_damage()
+		_barrier_cost.text = "MAX"
+	else:
+		_barrier_effect.text = (
+			"%d damage → %d damage"
+			% [
+				_upgrades.get_barrier_damage(),
+				barrier_level + 2,
+			]
+		)
+		_barrier_cost.text = "$%d" % barrier_cost
+	_barrier_purchase.text = "MAX" if barrier_cost < 0 else "Purchase"
+
+
+func _on_fish_selected(index: int) -> void:
+	if index < 0 or index >= _fish_list.item_count:
+		return
+	_selected_catch_id = StringName(str(_fish_list.get_item_metadata(index)))
+	_feedback.text = ""
+	_refresh_selected_fish()
+
+
+func _open_sale_confirmation() -> void:
+	var fish_catch: FishCatchType = _get_selected_catch()
+	if not _is_transaction_context_valid() or fish_catch == null:
+		_feedback.text = "This fish is no longer available."
+		_refresh_all()
+		return
+	if fish_catch.is_favorited:
+		_feedback.text = "Favorited fish cannot be sold."
+		return
+	_confirmation_catch_id = fish_catch.catch_id
+	var offer: int = _buyer.get_offer(fish_catch.sale_value)
+	_confirmation_text.text = (
+		"Sell this %.2f lb %s to the Fishing Shop for $%d?"
+		% [fish_catch.weight_lb, fish_catch.fish.display_name, offer]
+	)
+	_confirmation.show()
+	_cancel_sale.grab_focus()
+
+
+func _close_sale_confirmation() -> void:
+	_confirmation_catch_id = StringName()
+	_confirmation.hide()
+
+
+func _on_confirm_sale() -> void:
+	if _transaction_in_progress:
+		return
+	var transaction_generation: int = _generation
+	var catch_id: StringName = _confirmation_catch_id
+	_close_sale_confirmation()
+	if (
+		catch_id.is_empty()
+		or not _is_transaction_context_valid()
+		or transaction_generation != _generation
+		or _buyer.id != MAIN_SHOP_BUYER_ID
+	):
+		_feedback.text = "Unable to complete sale."
+		return
+	_transaction_in_progress = true
+	var result: FishSaleResultType = _sale_service.sell(catch_id, _buyer)
+	_transaction_in_progress = false
+	if (
+		transaction_generation != _generation
+		or not visible
+	):
+		return
+	if result.is_success():
+		_feedback.text = "Fish sold for $%d." % result.payout
+		_selected_catch_id = StringName()
+	else:
+		_feedback.text = result.get_message()
+	_refresh_all()
+
+
+func _purchase_reel_speed() -> void:
+	_purchase_upgrade(true)
+
+
+func _purchase_barrier_power() -> void:
+	_purchase_upgrade(false)
+
+
+func _purchase_upgrade(is_reel_speed: bool) -> void:
+	if _transaction_in_progress or not _is_transaction_context_valid():
+		_feedback.text = "Unable to complete purchase."
+		return
+	var cost: int = (
+		_upgrades.get_next_reel_speed_cost()
+		if is_reel_speed
+		else _upgrades.get_next_barrier_power_cost()
+	)
+	if cost < 0:
+		_feedback.text = "Maximum level reached."
+		return
+	if not _wallet.can_afford(cost):
+		_feedback.text = "Not enough money."
+		return
+	var transaction_generation: int = _generation
+	_transaction_in_progress = true
+	var purchased: bool = (
+		_upgrades.purchase_reel_speed(_wallet)
+		if is_reel_speed
+		else _upgrades.purchase_barrier_power(_wallet)
+	)
+	_transaction_in_progress = false
+	if transaction_generation != _generation or not visible:
+		return
+	_feedback.text = (
+		"Upgrade purchased."
+		if purchased
+		else "Unable to complete purchase."
+	)
+	_refresh_all()
+
+
+func _get_selected_catch() -> FishCatchType:
+	if _inventory == null or _selected_catch_id.is_empty():
+		return null
+	return _inventory.get_catch_by_id(_selected_catch_id)
+
+
+func _is_transaction_context_valid() -> bool:
+	return (
+		visible
+		and not _closing
+		and _interaction != null
+		and _interaction.is_local_player_in_range()
+		and _fishing_spot != null
+		and _fishing_spot.is_ready_for_shop_transaction()
+		and _buyer != null
+		and _buyer.is_valid()
+		and _buyer.id == MAIN_SHOP_BUYER_ID
+	)
+
+
+func _on_inventory_changed() -> void:
+	_refresh_fish_list()
+	if (
+		not _confirmation_catch_id.is_empty()
+		and _inventory.get_catch_by_id(_confirmation_catch_id) == null
+	):
+		_close_sale_confirmation()
+		_feedback.text = "This fish is no longer available."
+	_refresh_selected_fish()
+
+
+func _on_wallet_changed(_balance: int, _delta: int) -> void:
+	_refresh_wallet()
+	_refresh_upgrades()
+
+
+func _on_upgrades_changed(
+	_reel_speed_level: int,
+	_barrier_power_level: int,
+) -> void:
+	_refresh_upgrades()
+
+
+func _apply_mouse_close_policy(reason: CloseReason) -> void:
+	if not _mouse_snapshot_stored:
+		return
+	match reason:
+		CloseReason.USER, CloseReason.RANGE_EXIT:
+			Input.mouse_mode = _prior_mouse_mode
+		CloseReason.WATER_RECOVERY:
+			Input.mouse_mode = _prior_mouse_mode
+		CloseReason.SESSION_END:
+			Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
+		CloseReason.TEARDOWN:
+			pass
+	_mouse_snapshot_stored = false

ui/fishing_shop.gd.uid

@@ -0,0 +1 @@
+uid://6yu6krq6yk8f

ui/fishing_shop.tscn

@@ -0,0 +1,348 @@
+[gd_scene load_steps=6 format=3]
+
+[ext_resource type="Script" path="res://ui/fishing_shop.gd" id="1_script"]
+[ext_resource type="Theme" path="res://ui/game_theme.tres" id="2_theme"]
+[ext_resource type="Texture2D" path="res://items/icons/placeholder/reel_speed_upgrade.svg" id="3_reel"]
+[ext_resource type="Texture2D" path="res://items/icons/placeholder/barrier_power_upgrade.svg" id="4_barrier"]
+[ext_resource type="Texture2D" path="res://items/icons/placeholder/fish_coin.svg" id="5_coin"]
+
+[node name="FishingShop" type="Control"]
+unique_name_in_owner = true
+visible = false
+z_index = 80
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 2
+theme = ExtResource("2_theme")
+script = ExtResource("1_script")
+
+[node name="Dimmer" type="ColorRect" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 0
+color = Color(0.015, 0.02, 0.03, 0.64)
+
+[node name="ShopPanel" type="PanelContainer" parent="."]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -450.0
+offset_top = -260.0
+offset_right = 450.0
+offset_bottom = 260.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="Margin" type="MarginContainer" parent="ShopPanel"]
+layout_mode = 2
+theme_override_constants/margin_left = 16
+theme_override_constants/margin_top = 14
+theme_override_constants/margin_right = 16
+theme_override_constants/margin_bottom = 14
+
+[node name="Layout" type="VBoxContainer" parent="ShopPanel/Margin"]
+layout_mode = 2
+theme_override_constants/separation = 10
+
+[node name="Header" type="HBoxContainer" parent="ShopPanel/Margin/Layout"]
+layout_mode = 2
+theme_override_constants/separation = 8
+
+[node name="Title" type="Label" parent="ShopPanel/Margin/Layout/Header"]
+layout_mode = 2
+size_flags_horizontal = 3
+text = "Fishing Shop"
+theme_override_font_sizes/font_size = 24
+theme_override_colors/font_color = Color(0.208, 0.725, 0.78, 1)
+
+[node name="CoinIcon" type="TextureRect" parent="ShopPanel/Margin/Layout/Header"]
+custom_minimum_size = Vector2(24, 24)
+layout_mode = 2
+texture = ExtResource("5_coin")
+expand_mode = 1
+stretch_mode = 5
+texture_filter = 1
+
+[node name="WalletLabel" type="Label" parent="ShopPanel/Margin/Layout/Header"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Wallet: $0"
+
+[node name="CloseButton" type="Button" parent="ShopPanel/Margin/Layout/Header"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Close"
+custom_minimum_size = Vector2(72, 30)
+
+[node name="Feedback" type="Label" parent="ShopPanel/Margin/Layout"]
+unique_name_in_owner = true
+layout_mode = 2
+text = ""
+horizontal_alignment = 1
+theme_override_colors/font_color = Color(1, 0.82, 0.4, 1)
+
+[node name="Body" type="HBoxContainer" parent="ShopPanel/Margin/Layout"]
+layout_mode = 2
+size_flags_vertical = 3
+theme_override_constants/separation = 12
+
+[node name="FishSales" type="VBoxContainer" parent="ShopPanel/Margin/Layout/Body"]
+custom_minimum_size = Vector2(500, 0)
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_constants/separation = 6
+
+[node name="SalesTitle" type="Label" parent="ShopPanel/Margin/Layout/Body/FishSales"]
+layout_mode = 2
+text = "Sell individual Cooler fish • Full base value"
+theme_override_font_sizes/font_size = 17
+
+[node name="SalesBody" type="HSplitContainer" parent="ShopPanel/Margin/Layout/Body/FishSales"]
+layout_mode = 2
+size_flags_vertical = 3
+split_offset = 265
+theme_override_constants/separation = 8
+
+[node name="ListPanel" type="PanelContainer" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody"]
+custom_minimum_size = Vector2(250, 0)
+layout_mode = 2
+
+[node name="ListMargin" type="MarginContainer" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/ListPanel"]
+layout_mode = 2
+theme_override_constants/margin_left = 7
+theme_override_constants/margin_top = 7
+theme_override_constants/margin_right = 7
+theme_override_constants/margin_bottom = 7
+
+[node name="ListStack" type="VBoxContainer" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/ListPanel/ListMargin"]
+layout_mode = 2
+
+[node name="FishEmpty" type="Label" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/ListPanel/ListMargin/ListStack"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Your Cooler is empty."
+horizontal_alignment = 1
+
+[node name="FishList" type="ItemList" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/ListPanel/ListMargin/ListStack"]
+unique_name_in_owner = true
+layout_mode = 2
+size_flags_vertical = 3
+fixed_icon_size = Vector2i(48, 36)
+icon_mode = 1
+same_column_width = true
+
+[node name="FishDetail" type="PanelContainer" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody"]
+custom_minimum_size = Vector2(220, 0)
+layout_mode = 2
+
+[node name="DetailMargin" type="MarginContainer" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/FishDetail"]
+layout_mode = 2
+theme_override_constants/margin_left = 9
+theme_override_constants/margin_top = 9
+theme_override_constants/margin_right = 9
+theme_override_constants/margin_bottom = 9
+
+[node name="DetailStack" type="VBoxContainer" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/FishDetail/DetailMargin"]
+layout_mode = 2
+theme_override_constants/separation = 6
+
+[node name="FishTexture" type="TextureRect" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/FishDetail/DetailMargin/DetailStack"]
+unique_name_in_owner = true
+custom_minimum_size = Vector2(190, 100)
+layout_mode = 2
+expand_mode = 1
+stretch_mode = 5
+texture_filter = 1
+
+[node name="FishName" type="Label" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/FishDetail/DetailMargin/DetailStack"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Select a fish"
+horizontal_alignment = 1
+theme_override_font_sizes/font_size = 19
+
+[node name="FishDetails" type="Label" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/FishDetail/DetailMargin/DetailStack"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Choose one individual fish from your Cooler."
+horizontal_alignment = 1
+autowrap_mode = 2
+
+[node name="SellButton" type="Button" parent="ShopPanel/Margin/Layout/Body/FishSales/SalesBody/FishDetail/DetailMargin/DetailStack"]
+unique_name_in_owner = true
+layout_mode = 2
+disabled = true
+text = "Sell Selected"
+
+[node name="Upgrades" type="VBoxContainer" parent="ShopPanel/Margin/Layout/Body"]
+custom_minimum_size = Vector2(310, 0)
+layout_mode = 2
+theme_override_constants/separation = 8
+
+[node name="UpgradeTitle" type="Label" parent="ShopPanel/Margin/Layout/Body/Upgrades"]
+layout_mode = 2
+text = "Fishing Upgrades"
+theme_override_font_sizes/font_size = 17
+
+[node name="ReelCard" type="PanelContainer" parent="ShopPanel/Margin/Layout/Body/Upgrades"]
+layout_mode = 2
+
+[node name="Margin" type="MarginContainer" parent="ShopPanel/Margin/Layout/Body/Upgrades/ReelCard"]
+layout_mode = 2
+theme_override_constants/margin_left = 9
+theme_override_constants/margin_top = 9
+theme_override_constants/margin_right = 9
+theme_override_constants/margin_bottom = 9
+
+[node name="Row" type="HBoxContainer" parent="ShopPanel/Margin/Layout/Body/Upgrades/ReelCard/Margin"]
+layout_mode = 2
+theme_override_constants/separation = 9
+
+[node name="Icon" type="TextureRect" parent="ShopPanel/Margin/Layout/Body/Upgrades/ReelCard/Margin/Row"]
+custom_minimum_size = Vector2(60, 60)
+layout_mode = 2
+texture = ExtResource("3_reel")
+expand_mode = 1
+stretch_mode = 5
+texture_filter = 1
+
+[node name="Data" type="VBoxContainer" parent="ShopPanel/Margin/Layout/Body/Upgrades/ReelCard/Margin/Row"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="Name" type="Label" parent="ShopPanel/Margin/Layout/Body/Upgrades/ReelCard/Margin/Row/Data"]
+layout_mode = 2
+text = "Reel Speed"
+theme_override_font_sizes/font_size = 17
+
+[node name="ReelLevel" type="Label" parent="ShopPanel/Margin/Layout/Body/Upgrades/ReelCard/Margin/Row/Data"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Level 0"
+
+[node name="ReelEffect" type="Label" parent="ShopPanel/Margin/Layout/Body/Upgrades/ReelCard/Margin/Row/Data"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "1.00× → 1.10×"
+
+[node name="ReelCost" type="Label" parent="ShopPanel/Margin/Layout/Body/Upgrades/ReelCard/Margin/Row/Data"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "$50"
+
+[node name="ReelPurchase" type="Button" parent="ShopPanel/Margin/Layout/Body/Upgrades/ReelCard/Margin/Row"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Purchase"
+
+[node name="BarrierCard" type="PanelContainer" parent="ShopPanel/Margin/Layout/Body/Upgrades"]
+layout_mode = 2
+
+[node name="Margin" type="MarginContainer" parent="ShopPanel/Margin/Layout/Body/Upgrades/BarrierCard"]
+layout_mode = 2
+theme_override_constants/margin_left = 9
+theme_override_constants/margin_top = 9
+theme_override_constants/margin_right = 9
+theme_override_constants/margin_bottom = 9
+
+[node name="Row" type="HBoxContainer" parent="ShopPanel/Margin/Layout/Body/Upgrades/BarrierCard/Margin"]
+layout_mode = 2
+theme_override_constants/separation = 9
+
+[node name="Icon" type="TextureRect" parent="ShopPanel/Margin/Layout/Body/Upgrades/BarrierCard/Margin/Row"]
+custom_minimum_size = Vector2(60, 60)
+layout_mode = 2
+texture = ExtResource("4_barrier")
+expand_mode = 1
+stretch_mode = 5
+texture_filter = 1
+
+[node name="Data" type="VBoxContainer" parent="ShopPanel/Margin/Layout/Body/Upgrades/BarrierCard/Margin/Row"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="Name" type="Label" parent="ShopPanel/Margin/Layout/Body/Upgrades/BarrierCard/Margin/Row/Data"]
+layout_mode = 2
+text = "Barrier Power"
+theme_override_font_sizes/font_size = 17
+
+[node name="BarrierLevel" type="Label" parent="ShopPanel/Margin/Layout/Body/Upgrades/BarrierCard/Margin/Row/Data"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Level 0"
+
+[node name="BarrierEffect" type="Label" parent="ShopPanel/Margin/Layout/Body/Upgrades/BarrierCard/Margin/Row/Data"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "1 damage → 2 damage"
+
+[node name="BarrierCost" type="Label" parent="ShopPanel/Margin/Layout/Body/Upgrades/BarrierCard/Margin/Row/Data"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "$100"
+
+[node name="BarrierPurchase" type="Button" parent="ShopPanel/Margin/Layout/Body/Upgrades/BarrierCard/Margin/Row"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Purchase"
+
+[node name="SaleConfirmation" type="PanelContainer" parent="."]
+unique_name_in_owner = true
+visible = false
+z_index = 10
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -220.0
+offset_top = -90.0
+offset_right = 220.0
+offset_bottom = 90.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="Margin" type="MarginContainer" parent="SaleConfirmation"]
+layout_mode = 2
+theme_override_constants/margin_left = 18
+theme_override_constants/margin_top = 16
+theme_override_constants/margin_right = 18
+theme_override_constants/margin_bottom = 16
+
+[node name="Stack" type="VBoxContainer" parent="SaleConfirmation/Margin"]
+layout_mode = 2
+theme_override_constants/separation = 12
+
+[node name="ConfirmationText" type="Label" parent="SaleConfirmation/Margin/Stack"]
+unique_name_in_owner = true
+layout_mode = 2
+autowrap_mode = 2
+horizontal_alignment = 1
+
+[node name="Buttons" type="HBoxContainer" parent="SaleConfirmation/Margin/Stack"]
+layout_mode = 2
+alignment = 1
+theme_override_constants/separation = 8
+
+[node name="ConfirmSale" type="Button" parent="SaleConfirmation/Margin/Stack/Buttons"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Sell Fish"
+theme_type_variation = &"DangerButton"
+
+[node name="CancelSale" type="Button" parent="SaleConfirmation/Margin/Stack/Buttons"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Cancel"

ui/game_ui.gd

@@ -16,6 +16,13 @@ const PlayerHotbarType = preload("res://inventory/player_hotbar.gd")
 const HotbarUIType = preload("res://ui/hotbar.gd")
 const TitleScreenType = preload("res://ui/title_screen.gd")
 const PauseMenuType = preload("res://ui/pause_menu.gd")
+const FishingShopType = preload("res://ui/fishing_shop.gd")
+const PlayerFishingUpgradesType = preload(
+	"res://progression/player_fishing_upgrades.gd"
+)
+const ShopInteractionType = preload(
+	"res://world/fishing_shop_interaction.gd"
+)
 
 @onready var _status_label: Label = %StatusLabel
 @onready var _catch_track: Control = %CatchTrack
@@ -31,11 +38,15 @@ const PauseMenuType = preload("res://ui/pause_menu.gd")
 @onready var _title_screen: TitleScreenType = %TitleScreen
 @onready var _pause_menu: PauseMenuType = %PauseMenu
 @onready var _hotbar_ui: HotbarUIType = %Hotbar
+@onready var _fishing_shop: FishingShopType = %FishingShop
+@onready var _shop_prompt: PanelContainer = %ShopPrompt
 
 var _showcase_active: bool = false
 var _player_menu_open: bool = false
 var _gameplay_ui_enabled: bool = false
 var _fishing_spot: FishingSpotType
+var _system_menu_open: bool = false
+var _shop_open: bool = false
 
 
 func setup(
@@ -50,6 +61,9 @@ func setup(
 	bag: PlayerBagType,
 	hotbar: PlayerHotbarType,
 	item_catalog: ItemCatalogType,
+	main_shop_buyer: FishBuyerProfileType,
+	fishing_upgrades: PlayerFishingUpgradesType,
+	shop_interaction: ShopInteractionType,
 ) -> void:
 	_fishing_spot = fishing_spot
 	fishing_spot.status_changed.connect(_on_fishing_status_changed)
@@ -72,6 +86,17 @@ func setup(
 		item_catalog
 	)
 	_hotbar_ui.setup(hotbar, bag, item_catalog, fishing_spot)
+	_fishing_shop.setup(
+		player,
+		inventory,
+		wallet,
+		sale_service,
+		main_shop_buyer,
+		fishing_upgrades,
+		fishing_spot,
+		shop_interaction
+	)
+	_fishing_shop.menu_visibility_changed.connect(_on_shop_visibility_changed)
 
 
 func close_player_menu() -> void:
@@ -102,7 +127,9 @@ func set_gameplay_ui_enabled(enabled: bool) -> void:
 	_gameplay_ui_enabled = enabled
 	if not enabled:
 		close_player_menu_for_session_end()
+		_fishing_shop.close_for_session_end()
 		_fishing_panel.visible = false
+		_shop_prompt.hide()
 		_hotbar_ui.hide()
 		_hotbar_ui.set_gameplay_input_enabled(false)
 	else:
@@ -112,11 +139,33 @@ func set_gameplay_ui_enabled(enabled: bool) -> void:
 
 
 func set_system_menu_open(is_open: bool) -> void:
-	_hotbar_ui.visible = _gameplay_ui_enabled and not is_open
+	_system_menu_open = is_open
+	_hotbar_ui.visible = (
+		_gameplay_ui_enabled and not is_open and not _shop_open
+	)
 	_hotbar_ui.set_gameplay_input_enabled(
-		_gameplay_ui_enabled and not is_open and not _player_menu_open
+		_gameplay_ui_enabled
+		and not is_open
+		and not _player_menu_open
+		and not _shop_open
 	)
 	_hotbar_ui.set_drag_enabled(_player_menu_open and not is_open)
+	if is_open:
+		_shop_prompt.hide()
+
+
+func get_fishing_shop() -> FishingShopType:
+	return _fishing_shop
+
+
+func set_shop_prompt_visible(is_visible: bool) -> void:
+	_shop_prompt.visible = (
+		is_visible
+		and _gameplay_ui_enabled
+		and not _system_menu_open
+		and not _player_menu_open
+		and not _shop_open
+	)
 
 
 func get_screen_fade() -> ScreenFade:
@@ -299,3 +348,20 @@ func _on_player_menu_visibility_changed(is_open: bool) -> void:
 	)
 	_hotbar_ui.set_drag_enabled(is_open)
 	_refresh_fishing_panel_visibility()
+	if is_open:
+		_shop_prompt.hide()
+
+
+func _on_shop_visibility_changed(is_open: bool) -> void:
+	_shop_open = is_open
+	_hotbar_ui.visible = (
+		_gameplay_ui_enabled and not is_open and not _system_menu_open
+	)
+	_hotbar_ui.set_gameplay_input_enabled(
+		_gameplay_ui_enabled
+		and not is_open
+		and not _system_menu_open
+		and not _player_menu_open
+	)
+	if is_open:
+		_shop_prompt.hide()

ui/game_ui.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=12 format=3]
+[gd_scene load_steps=13 format=3]
 
 [ext_resource type="Script" path="res://ui/game_ui.gd" id="1_ui"]
 [ext_resource type="PackedScene" path="res://ui/player_menu.tscn" id="2_menu"]
@@ -7,6 +7,7 @@
 [ext_resource type="PackedScene" path="res://ui/title_screen.tscn" id="5_title"]
 [ext_resource type="PackedScene" path="res://ui/pause_menu.tscn" id="6_pause"]
 [ext_resource type="PackedScene" path="res://ui/hotbar.tscn" id="7_hotbar"]
+[ext_resource type="PackedScene" path="res://ui/fishing_shop.tscn" id="8_shop"]
 
 [sub_resource type="StyleBoxFlat" id="StyleBox_chase_background"]
 bg_color = Color(0.055, 0.105, 0.125, 1)
@@ -133,6 +134,39 @@ unique_name_in_owner = true
 [node name="Hotbar" parent="." instance=ExtResource("7_hotbar")]
 unique_name_in_owner = true
 
+[node name="ShopPrompt" type="PanelContainer" parent="."]
+unique_name_in_owner = true
+visible = false
+z_index = 55
+anchors_preset = 7
+anchor_left = 0.5
+anchor_top = 1.0
+anchor_right = 0.5
+anchor_bottom = 1.0
+offset_left = -150.0
+offset_top = -284.0
+offset_right = 150.0
+offset_bottom = -246.0
+grow_horizontal = 2
+grow_vertical = 0
+mouse_filter = 2
+theme = ExtResource("3_theme")
+
+[node name="Margin" type="MarginContainer" parent="ShopPrompt"]
+layout_mode = 2
+theme_override_constants/margin_left = 12
+theme_override_constants/margin_top = 7
+theme_override_constants/margin_right = 12
+theme_override_constants/margin_bottom = 7
+
+[node name="Label" type="Label" parent="ShopPrompt/Margin"]
+layout_mode = 2
+text = "Press E to open Fishing Shop"
+horizontal_alignment = 1
+
+[node name="FishingShop" parent="." instance=ExtResource("8_shop")]
+unique_name_in_owner = true
+
 [node name="ScreenFade" type="ColorRect" parent="."]
 unique_name_in_owner = true
 visible = false

world/fishing_shop_interaction.gd

@@ -0,0 +1,47 @@
+class_name FishingShopInteraction
+extends Area3D
+
+signal local_player_range_changed(in_range: bool)
+
+var _local_player: Player
+var _local_player_in_range: bool = false
+
+
+func _ready() -> void:
+	body_entered.connect(_on_body_entered)
+	body_exited.connect(_on_body_exited)
+
+
+func setup_local_player(player: Player) -> void:
+	_local_player = player
+	_refresh_overlaps()
+
+
+func is_local_player_in_range() -> bool:
+	return _local_player_in_range
+
+
+func _refresh_overlaps() -> void:
+	var is_overlapping: bool = (
+		_local_player != null
+		and is_instance_valid(_local_player)
+		and _local_player in get_overlapping_bodies()
+	)
+	_set_local_player_in_range(is_overlapping)
+
+
+func _on_body_entered(body: Node3D) -> void:
+	if body == _local_player:
+		_set_local_player_in_range(true)
+
+
+func _on_body_exited(body: Node3D) -> void:
+	if body == _local_player:
+		_set_local_player_in_range(false)
+
+
+func _set_local_player_in_range(in_range: bool) -> void:
+	if _local_player_in_range == in_range:
+		return
+	_local_player_in_range = in_range
+	local_player_range_changed.emit(in_range)

world/fishing_shop_interaction.gd.uid

@@ -0,0 +1 @@
+uid://c06cr0abctued

world/test_world.gd

@@ -1,8 +1,13 @@
 class_name TestWorld
 extends Node3D
 
+const FishingShopInteractionType = preload(
+	"res://world/fishing_shop_interaction.gd"
+)
+
 @onready var _water_trigger: PlayerWaterTrigger = %PlayerWaterTrigger
 @onready var _safe_respawn_points: Node3D = %SafeRespawnPoints
+@onready var _fishing_shop: FishingShopInteractionType = %FishingShopInteraction
 
 
 func get_player_water_trigger() -> PlayerWaterTrigger:
@@ -16,3 +21,7 @@ func get_safe_respawn_points() -> Array[SafeRespawnPoint]:
 		if point != null:
 			points.append(point)
 	return points
+
+
+func get_fishing_shop() -> FishingShopInteractionType:
+	return _fishing_shop

world/test_world.tscn

@@ -1,10 +1,11 @@
-[gd_scene load_steps=18 format=3]
+[gd_scene load_steps=25 format=3]
 
 [ext_resource type="Script" path="res://world/fishable_water_region.gd" id="1_water_region"]
 [ext_resource type="Resource" path="res://fish/pools/test_water_pool.tres" id="2_fish_pool"]
 [ext_resource type="Script" path="res://world/test_world.gd" id="3_world"]
 [ext_resource type="Script" path="res://world/player_water_trigger.gd" id="4_water_trigger"]
 [ext_resource type="Script" path="res://world/safe_respawn_point.gd" id="5_safe_point"]
+[ext_resource type="Script" path="res://world/fishing_shop_interaction.gd" id="6_shop"]
 
 [sub_resource type="BoxShape3D" id="GroundShape"]
 size = Vector3(30, 1, 30)
@@ -51,6 +52,24 @@ ambient_light_source = 3
 ambient_light_color = Color(0.65, 0.72, 0.8, 1)
 ambient_light_energy = 0.65
 
+[sub_resource type="BoxMesh" id="ShopCounterMesh"]
+size = Vector3(3.4, 1.25, 1.5)
+
+[sub_resource type="BoxMesh" id="ShopRoofMesh"]
+size = Vector3(4.2, 0.35, 2.2)
+
+[sub_resource type="BoxMesh" id="ShopPostMesh"]
+size = Vector3(0.25, 2.8, 0.25)
+
+[sub_resource type="StandardMaterial3D" id="ShopPrimaryMaterial"]
+albedo_color = Color(0.18, 0.72, 0.68, 1)
+
+[sub_resource type="StandardMaterial3D" id="ShopAccentMaterial"]
+albedo_color = Color(1, 0.72, 0.22, 1)
+
+[sub_resource type="SphereShape3D" id="ShopInteractionShape"]
+radius = 3.0
+
 [node name="TestWorld" type="Node3D"]
 script = ExtResource("3_world")
 
@@ -142,3 +161,44 @@ script = ExtResource("5_safe_point")
 [node name="DockEnd" type="Marker3D" parent="SafeRespawnPoints"]
 position = Vector3(0, 1.08, -17)
 script = ExtResource("5_safe_point")
+
+[node name="FishingShop" type="Node3D" parent="."]
+position = Vector3(8, 0, 5)
+
+[node name="Counter" type="MeshInstance3D" parent="FishingShop"]
+position = Vector3(0, 0.625, 0)
+mesh = SubResource("ShopCounterMesh")
+material_override = SubResource("ShopPrimaryMaterial")
+
+[node name="Roof" type="MeshInstance3D" parent="FishingShop"]
+position = Vector3(0, 2.25, 0)
+mesh = SubResource("ShopRoofMesh")
+material_override = SubResource("ShopAccentMaterial")
+
+[node name="WestPost" type="MeshInstance3D" parent="FishingShop"]
+position = Vector3(-1.55, 1.4, 0.55)
+mesh = SubResource("ShopPostMesh")
+material_override = SubResource("ShopPrimaryMaterial")
+
+[node name="EastPost" type="MeshInstance3D" parent="FishingShop"]
+position = Vector3(1.55, 1.4, 0.55)
+mesh = SubResource("ShopPostMesh")
+material_override = SubResource("ShopPrimaryMaterial")
+
+[node name="ShopName" type="Label3D" parent="FishingShop"]
+position = Vector3(0, 2.7, 0)
+text = "Fishing Shop"
+font_size = 36
+outline_size = 8
+billboard = 1
+no_depth_test = true
+
+[node name="FishingShopInteraction" type="Area3D" parent="FishingShop"]
+unique_name_in_owner = true
+position = Vector3(0, 1, 0)
+collision_layer = 0
+collision_mask = 2
+script = ExtResource("6_shop")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="FishingShop/FishingShopInteraction"]
+shape = SubResource("ShopInteractionShape")