Add fish selling, buyer profiles, and player wallet

economy/buyers/main_fishing_shop.tres

@@ -0,0 +1,11 @@
+[gd_resource type="Resource" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://economy/fish_buyer_profile.gd" id="1_profile"]
+
+[resource]
+script = ExtResource("1_profile")
+id = &"main_fishing_shop"
+display_name = "Main Fishing Shop"
+animal_name_singular = "shopkeeper"
+animal_name_plural = "shopkeepers"
+payout_multiplier = 1.0

economy/buyers/pelicans.tres

@@ -0,0 +1,12 @@
+[gd_resource type="Resource" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://economy/fish_buyer_profile.gd" id="1_profile"]
+
+[resource]
+script = ExtResource("1_profile")
+id = &"pelicans"
+display_name = "Pelicans"
+animal_name_singular = "pelican"
+animal_name_plural = "pelicans"
+payout_multiplier = 0.7
+sale_message_template = "You sold your {fish} to the pelicans for ${payout}."

economy/buyers/trading_post.tres

@@ -0,0 +1,11 @@
+[gd_resource type="Resource" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://economy/fish_buyer_profile.gd" id="1_profile"]
+
+[resource]
+script = ExtResource("1_profile")
+id = &"trading_post"
+display_name = "Trading Post"
+animal_name_singular = "otter"
+animal_name_plural = "otters"
+payout_multiplier = 0.85

economy/fish_buyer_profile.gd

@@ -0,0 +1,46 @@
+class_name FishBuyerProfile
+extends Resource
+
+@export var id: StringName
+@export var display_name: String
+@export var animal_name_singular: String
+@export var animal_name_plural: String
+@export_range(0.0, 10.0, 0.01) var payout_multiplier: float = 1.0
+@export_multiline var sale_message_template: String
+
+
+func is_valid() -> bool:
+	return (
+		not id.is_empty()
+		and not display_name.is_empty()
+		and payout_multiplier >= 0.0
+		and is_finite(payout_multiplier)
+	)
+
+
+func get_offer(base_value: int) -> int:
+	if not is_valid() or base_value < 0:
+		return -1
+	var offer: int = roundi(float(base_value) * payout_multiplier)
+	return maxi(offer, 0)
+
+
+func get_sale_message(
+	fish_name: String,
+	payout: int,
+) -> String:
+	if not sale_message_template.is_empty():
+		return sale_message_template.format(
+			{
+				"fish": fish_name,
+				"payout": payout,
+			}
+		)
+	var buyer_name: String = animal_name_plural
+	if buyer_name.is_empty():
+		buyer_name = display_name
+	return "You sold your %s to the %s for $%d." % [
+		fish_name,
+		buyer_name,
+		payout,
+	]

economy/fish_buyer_profile.gd.uid

@@ -0,0 +1 @@
+uid://cq1b2avld4qay

economy/fish_sale_result.gd

@@ -0,0 +1,45 @@
+class_name FishSaleResult
+extends RefCounted
+
+enum Status {
+	SUCCESS,
+	NOT_FOUND,
+	FAVORITED,
+	INVALID_VALUE,
+	INVALID_BUYER,
+	INVALID_OFFER,
+	TRANSACTION_FAILED,
+}
+
+var success: bool = false
+var status: Status = Status.TRANSACTION_FAILED
+var catch_id: StringName
+var fish_name: String = ""
+var buyer_id: StringName
+var buyer_display_name: String = ""
+var buyer_animal_name: String = ""
+var base_value: int = 0
+var payout: int = 0
+var sale_message: String = ""
+
+
+func is_success() -> bool:
+	return success and status == Status.SUCCESS
+
+
+func get_message() -> String:
+	match status:
+		Status.SUCCESS:
+			return sale_message
+		Status.NOT_FOUND:
+			return "Fish no longer exists."
+		Status.FAVORITED:
+			return "Favorited fish cannot be sold."
+		Status.INVALID_VALUE:
+			return "Invalid sale value."
+		Status.INVALID_BUYER:
+			return "Buyer is unavailable."
+		Status.INVALID_OFFER:
+			return "Invalid buyer offer."
+		_:
+			return "Transaction failed."

economy/fish_sale_result.gd.uid

@@ -0,0 +1 @@
+uid://c02hcw8fkn5i8

economy/fish_sale_service.gd

@@ -0,0 +1,98 @@
+class_name FishSaleService
+extends Node
+
+const FishCatchType = preload("res://fish/fish_catch.gd")
+const FishBuyerProfileType = preload("res://economy/fish_buyer_profile.gd")
+const FishInventoryType = preload("res://inventory/fish_inventory.gd")
+const FishSaleResultType = preload("res://economy/fish_sale_result.gd")
+const PlayerWalletType = preload("res://economy/player_wallet.gd")
+
+signal sale_completed(result: FishSaleResultType)
+
+var _inventory: FishInventoryType
+var _wallet: PlayerWalletType
+
+
+func setup(
+	inventory: FishInventoryType,
+	wallet: PlayerWalletType,
+) -> void:
+	_inventory = inventory
+	_wallet = wallet
+
+
+func can_sell(
+	catch_id: StringName,
+	buyer: FishBuyerProfileType,
+) -> bool:
+	return _validate_sale(catch_id, buyer).is_success()
+
+
+func sell(
+	catch_id: StringName,
+	buyer: FishBuyerProfileType,
+) -> FishSaleResultType:
+	var result: FishSaleResultType = _validate_sale(catch_id, buyer)
+	if not result.is_success():
+		return result
+
+	var removed_catch: FishCatchType = _inventory.remove_catch_by_id(catch_id)
+	if removed_catch == null:
+		result.success = false
+		result.status = FishSaleResultType.Status.NOT_FOUND
+		return result
+	if not _wallet.credit(result.payout):
+		_inventory.add_catch(removed_catch)
+		result.success = false
+		result.status = FishSaleResultType.Status.TRANSACTION_FAILED
+		return result
+	sale_completed.emit(result)
+	return result
+
+
+func _validate_sale(
+	catch_id: StringName,
+	buyer: FishBuyerProfileType,
+) -> FishSaleResultType:
+	var result := FishSaleResultType.new()
+	result.catch_id = catch_id
+	if (
+		catch_id.is_empty()
+		or _inventory == null
+		or _wallet == null
+	):
+		result.status = FishSaleResultType.Status.NOT_FOUND
+		return result
+	if buyer == null or not buyer.is_valid():
+		result.status = FishSaleResultType.Status.INVALID_BUYER
+		return result
+	var fish_catch: FishCatchType = _inventory.get_catch_by_id(catch_id)
+	if fish_catch == null:
+		result.status = FishSaleResultType.Status.NOT_FOUND
+		return result
+	result.fish_name = fish_catch.fish.display_name
+	result.buyer_id = buyer.id
+	result.buyer_display_name = buyer.display_name
+	result.buyer_animal_name = (
+		buyer.animal_name_plural
+		if not buyer.animal_name_plural.is_empty()
+		else buyer.display_name
+	)
+	result.base_value = fish_catch.sale_value
+	result.payout = buyer.get_offer(result.base_value)
+	if fish_catch.is_favorited:
+		result.status = FishSaleResultType.Status.FAVORITED
+	elif fish_catch.sale_value < 0:
+		result.status = FishSaleResultType.Status.INVALID_VALUE
+	elif result.payout < 0:
+		result.status = FishSaleResultType.Status.INVALID_OFFER
+	elif not _wallet.can_credit(result.payout):
+		result.status = FishSaleResultType.Status.TRANSACTION_FAILED
+	else:
+		result.status = FishSaleResultType.Status.SUCCESS
+		result.success = true
+		result.sale_message = buyer.get_sale_message(
+			result.fish_name,
+			result.payout
+		)
+	return result

economy/fish_sale_service.gd.uid

@@ -0,0 +1 @@
+uid://cg3ec2ypo26xh

economy/player_wallet.gd

@@ -0,0 +1,45 @@
+class_name PlayerWallet
+extends Node
+
+signal balance_changed(new_balance: int, delta: int)
+
+@export var current_balance: int = 0
+
+
+func _ready() -> void:
+	current_balance = maxi(current_balance, 0)
+
+
+func get_balance() -> int:
+	return current_balance
+
+
+func can_afford(amount: int) -> bool:
+	return amount >= 0 and current_balance >= amount
+
+
+func can_credit(amount: int) -> bool:
+	return (
+		amount >= 0
+		and current_balance <= 9223372036854775807 - amount
+	)
+
+
+func credit(amount: int) -> bool:
+	if not can_credit(amount):
+		return false
+	if amount == 0:
+		return true
+	current_balance += amount
+	balance_changed.emit(current_balance, amount)
+	return true
+
+
+func debit(amount: int) -> bool:
+	if not can_afford(amount):
+		return false
+	if amount == 0:
+		return true
+	current_balance -= amount
+	balance_changed.emit(current_balance, -amount)
+	return true

economy/player_wallet.gd.uid

@@ -0,0 +1 @@
+uid://dp1uf8h8eevs

fish/fish_catch.gd

@@ -9,6 +9,8 @@ const FishDataType = preload("res://fish/fish_data.gd")
 @export var catch_sequence: int = 0
 @export var weight_lb: float = 0.0
 @export var display_scale: float = 1.0
+@export var sale_value: int = 0
+@export var is_favorited: bool = false
 
 
 func ensure_identity() -> void:
@@ -29,4 +31,5 @@ func is_valid() -> bool:
 		and weight_lb >= fish.get_minimum_weight()
 		and weight_lb <= fish.get_maximum_weight()
 		and display_scale > 0.0
+		and sale_value >= 0
 	)

fish/fish_data.gd

@@ -25,6 +25,9 @@ enum Rarity {
 @export_range(0.01, 20.0, 0.01) var display_scale_min: float = 0.8
 @export_range(0.01, 20.0, 0.01) var display_scale_max: float = 1.2
 @export_range(0.01, 10.0, 0.01) var display_scale_curve: float = 1.0
+@export_range(0, 1000000, 1) var sell_value_min: int = 0
+@export_range(0, 1000000, 1) var sell_value_max: int = 1
+@export_range(0.01, 10.0, 0.01) var sell_value_curve: float = 1.0
 @export var display_texture: Texture2D
 
 
@@ -38,6 +41,9 @@ func is_selectable() -> bool:
 		and display_scale_min > 0.0
 		and display_scale_max >= display_scale_min
 		and display_scale_curve > 0.0
+		and sell_value_min >= 0
+		and sell_value_max >= sell_value_min
+		and sell_value_curve > 0.0
 	)
 
 
@@ -68,5 +74,28 @@ func get_display_scale_for_weight(weight_lb: float) -> float:
 	return lerpf(minimum_scale, maximum_scale, normalized_weight)
 
 
+func get_sale_value_for_weight(weight_lb: float) -> int:
+	var minimum_value: int = maxi(sell_value_min, 0)
+	var maximum_value: int = maxi(sell_value_max, minimum_value)
+	var normalized_weight: float = 0.0
+	var minimum_weight: float = get_minimum_weight()
+	var maximum_weight: float = get_maximum_weight()
+	if maximum_weight > minimum_weight:
+		normalized_weight = inverse_lerp(
+			minimum_weight,
+			maximum_weight,
+			weight_lb
+		)
+	normalized_weight = pow(
+		clampf(normalized_weight, 0.0, 1.0),
+		maxf(sell_value_curve, 0.01)
+	)
+	return clampi(
+		roundi(lerpf(minimum_value, maximum_value, normalized_weight)),
+		minimum_value,
+		maximum_value
+	)
+
+
 func get_rarity_name() -> String:
 	return Rarity.keys()[rarity].capitalize()

fish/fish_selector.gd

@@ -76,4 +76,7 @@ func create_catch(fish: FishDataType) -> FishCatchType:
 	caught_fish.display_scale = fish.get_display_scale_for_weight(
 		caught_fish.weight_lb
 	)
+	caught_fish.sale_value = fish.get_sale_value_for_weight(
+		caught_fish.weight_lb
+	)
 	return caught_fish

fish/species/bass/bass.tres

@@ -25,4 +25,7 @@ weight_max_lb = 8.0
 display_scale_min = 0.9
 display_scale_max = 1.5
 display_scale_curve = 0.9
+sell_value_min = 12
+sell_value_max = 45
+sell_value_curve = 0.9
 display_texture = ExtResource("4_texture")

fish/species/bluegill/bluegill.tres

@@ -18,4 +18,7 @@ weight_max_lb = 2.0
 display_scale_min = 0.7
 display_scale_max = 1.1
 display_scale_curve = 1.0
+sell_value_min = 3
+sell_value_max = 12
+sell_value_curve = 1.0
 display_texture = ExtResource("4_texture")

fish/species/carp/carp.tres

@@ -25,4 +25,7 @@ weight_max_lb = 18.0
 display_scale_min = 1.0
 display_scale_max = 1.8
 display_scale_curve = 0.85
+sell_value_min = 25
+sell_value_max = 90
+sell_value_curve = 0.85
 display_texture = ExtResource("4_texture")

inventory/fish_inventory.gd

@@ -13,7 +13,7 @@ var _next_catch_sequence: int = 1
 func add_catch(fish_catch: FishCatchType) -> void:
 	if fish_catch == null or not fish_catch.is_valid():
 		return
-	if get_catch(fish_catch.catch_id) != null:
+	if get_catch_by_id(fish_catch.catch_id) != null:
 		return
 	if fish_catch.catch_sequence <= 0:
 		fish_catch.catch_sequence = _next_catch_sequence
@@ -37,7 +37,7 @@ func get_all_catches() -> Array[FishCatchType]:
 	return _catches.duplicate()
 
 
-func get_catch(catch_id: StringName) -> FishCatchType:
+func get_catch_by_id(catch_id: StringName) -> FishCatchType:
 	if catch_id.is_empty():
 		return null
 	for fish_catch: FishCatchType in _catches:
@@ -46,6 +46,54 @@ func get_catch(catch_id: StringName) -> FishCatchType:
 	return null
 
 
+func get_catch(catch_id: StringName) -> FishCatchType:
+	return get_catch_by_id(catch_id)
+
+
+func contains_catch_id(catch_id: StringName) -> bool:
+	return get_catch_by_id(catch_id) != null
+
+
+func remove_catch_by_id(catch_id: StringName) -> FishCatchType:
+	if catch_id.is_empty():
+		return null
+	for index: int in range(_catches.size()):
+		var fish_catch: FishCatchType = _catches[index]
+		if fish_catch == null or fish_catch.catch_id != catch_id:
+			continue
+		_catches.remove_at(index)
+		contents_changed.emit(
+			fish_catch.fish_id,
+			get_count(fish_catch.fish_id)
+		)
+		catches_changed.emit()
+		return fish_catch
+	return null
+
+
+func set_catch_favorited(
+	catch_id: StringName,
+	is_favorited: bool,
+) -> bool:
+	var fish_catch: FishCatchType = get_catch_by_id(catch_id)
+	if fish_catch == null:
+		return false
+	if fish_catch.is_favorited == is_favorited:
+		return true
+	fish_catch.is_favorited = is_favorited
+	catches_changed.emit()
+	return true
+
+
+func get_total_sale_value() -> int:
+	var total: int = 0
+	for fish_catch: FishCatchType in _catches:
+		if fish_catch == null or fish_catch.sale_value < 0:
+			continue
+		total += fish_catch.sale_value
+	return total
+
+
 func get_catches_by_fish_id(fish_id: StringName) -> Array[FishCatchType]:
 	var matching: Array[FishCatchType] = []
 	for fish_catch: FishCatchType in _catches:

main/main.gd

@@ -1,11 +1,13 @@
 extends Node3D
 
 const FishingSpotType = preload("res://fishing/fishing_spot.gd")
+const FishBuyerProfileType = preload("res://economy/fish_buyer_profile.gd")
 const FishPoolType = preload("res://fish/fish_pool.gd")
 const GameUIType = preload("res://ui/game_ui.gd")
 const PlayerType = preload("res://player/player.gd")
 
 @export var fish_catalog: FishPoolType
+@export var pelican_buyer_profile: FishBuyerProfileType
 
 @onready var _player: PlayerType = %Player
 @onready var _fishing_spot: FishingSpotType = %FishingSpot
@@ -13,6 +15,10 @@ const PlayerType = preload("res://player/player.gd")
 
 
 func _ready() -> void:
+	_player.fish_sale_service.setup(
+		_player.inventory,
+		_player.wallet
+	)
 	_fishing_spot.setup(
 		_player,
 		_player.inventory,
@@ -22,6 +28,9 @@ func _ready() -> void:
 		_player,
 		_player.inventory,
 		_player.collection_log,
+		_player.wallet,
+		_player.fish_sale_service,
+		pelican_buyer_profile,
 		fish_catalog,
 		_fishing_spot
 	)

main/main.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=7 format=3]
+[gd_scene load_steps=8 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"]
@@ -6,10 +6,12 @@
 [ext_resource type="PackedScene" path="res://fishing/fishing_spot.tscn" id="4_spot"]
 [ext_resource type="PackedScene" path="res://ui/game_ui.tscn" id="5_ui"]
 [ext_resource type="Resource" path="res://fish/pools/test_water_pool.tres" id="6_pool"]
+[ext_resource type="Resource" path="res://economy/buyers/pelicans.tres" id="7_pelicans"]
 
 [node name="Main" type="Node3D"]
 script = ExtResource("3_main")
 fish_catalog = ExtResource("6_pool")
+pelican_buyer_profile = ExtResource("7_pelicans")
 
 [node name="TestWorld" parent="." instance=ExtResource("1_world")]
 

player/player.gd

@@ -4,6 +4,8 @@ extends CharacterBody3D
 const FishInventoryType = preload("res://inventory/fish_inventory.gd")
 const CollectionLogType = preload("res://collection/collection_log.gd")
 const FishCatchType = preload("res://fish/fish_catch.gd")
+const FishSaleServiceType = preload("res://economy/fish_sale_service.gd")
+const PlayerWalletType = preload("res://economy/player_wallet.gd")
 
 class ShowcaseCameraSnapshot:
 	extends RefCounted
@@ -59,6 +61,8 @@ class ShowcaseCameraSnapshot:
 @onready var _camera: Camera3D = %Camera3D
 @onready var inventory: FishInventoryType = %Inventory
 @onready var collection_log: CollectionLogType = %CollectionLog
+@onready var wallet: PlayerWalletType = %Wallet
+@onready var fish_sale_service: FishSaleServiceType = %FishSaleService
 @onready var _cast_origin: Marker3D = %CastOrigin
 @onready var _fishing_rod: Node3D = %FishingRod
 @onready var _fishing_rod_tip: Marker3D = %FishingRodTip

player/player.tscn

@@ -1,8 +1,10 @@
-[gd_scene load_steps=11 format=3]
+[gd_scene load_steps=13 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"]
 [ext_resource type="Script" path="res://collection/collection_log.gd" id="3_collection"]
+[ext_resource type="Script" path="res://economy/player_wallet.gd" id="4_wallet"]
+[ext_resource type="Script" path="res://economy/fish_sale_service.gd" id="5_sale_service"]
 
 [sub_resource type="CapsuleShape3D" id="PlayerShape"]
 radius = 0.45
@@ -78,6 +80,14 @@ script = ExtResource("2_inventory")
 unique_name_in_owner = true
 script = ExtResource("3_collection")
 
+[node name="Wallet" type="Node" parent="."]
+unique_name_in_owner = true
+script = ExtResource("4_wallet")
+
+[node name="FishSaleService" type="Node" parent="."]
+unique_name_in_owner = true
+script = ExtResource("5_sale_service")
+
 [node name="CatchDisplayAnchor" type="Marker3D" parent="Visuals"]
 unique_name_in_owner = true
 position = Vector3(0, 1.45, -1.15)

ui/game_ui.gd

@@ -2,11 +2,14 @@ class_name GameUI
 extends CanvasLayer
 
 const CollectionLogType = preload("res://collection/collection_log.gd")
+const FishBuyerProfileType = preload("res://economy/fish_buyer_profile.gd")
+const FishSaleServiceType = preload("res://economy/fish_sale_service.gd")
 const FishPoolType = preload("res://fish/fish_pool.gd")
 const FishInventoryType = preload("res://inventory/fish_inventory.gd")
 const FishingSpotType = preload("res://fishing/fishing_spot.gd")
 const PlayerMenuType = preload("res://ui/player_menu.gd")
 const PlayerType = preload("res://player/player.gd")
+const PlayerWalletType = preload("res://economy/player_wallet.gd")
 
 @onready var _status_label: Label = %StatusLabel
 @onready var _catch_track: Control = %CatchTrack
@@ -26,6 +29,9 @@ func setup(
 	player: PlayerType,
 	inventory: FishInventoryType,
 	collection_log: CollectionLogType,
+	wallet: PlayerWalletType,
+	sale_service: FishSaleServiceType,
+	default_buyer: FishBuyerProfileType,
 	catalog: FishPoolType,
 	fishing_spot: FishingSpotType,
 ) -> void:
@@ -39,6 +45,9 @@ func setup(
 		player,
 		inventory,
 		collection_log,
+		wallet,
+		sale_service,
+		default_buyer,
 		catalog,
 		fishing_spot
 	)

ui/player_menu.gd

@@ -4,10 +4,14 @@ extends Control
 const CollectionLogType = preload("res://collection/collection_log.gd")
 const FishCatchType = preload("res://fish/fish_catch.gd")
 const FishDataType = preload("res://fish/fish_data.gd")
+const FishBuyerProfileType = preload("res://economy/fish_buyer_profile.gd")
+const FishSaleResultType = preload("res://economy/fish_sale_result.gd")
+const FishSaleServiceType = preload("res://economy/fish_sale_service.gd")
 const FishInventoryType = preload("res://inventory/fish_inventory.gd")
 const FishPoolType = preload("res://fish/fish_pool.gd")
 const FishingSpotType = preload("res://fishing/fishing_spot.gd")
 const PlayerType = preload("res://player/player.gd")
+const PlayerWalletType = preload("res://economy/player_wallet.gd")
 
 signal menu_visibility_changed(is_open: bool)
 
@@ -25,21 +29,34 @@ enum SortMode {
 @onready var _inventory_tab: Button = %InventoryTab
 @onready var _logbook_tab: Button = %LogbookTab
 @onready var _close_button: Button = %CloseButton
+@onready var _wallet_balance: Label = %WalletBalance
 @onready var _inventory_section: Control = %InventorySection
 @onready var _logbook_section: Control = %LogbookSection
 @onready var _sort_option: OptionButton = %SortOption
 @onready var _sort_direction: Button = %SortDirection
+@onready var _held_value: Label = %HeldValue
 @onready var _inventory_empty: Label = %InventoryEmpty
 @onready var _inventory_grid: GridContainer = %InventoryGrid
 @onready var _detail_texture: TextureRect = %DetailTexture
 @onready var _detail_name: Label = %DetailName
 @onready var _detail_data: Label = %DetailData
+@onready var _favorite_button: Button = %FavoriteButton
+@onready var _sell_button: Button = %SellButton
+@onready var _sale_unavailable: Label = %SaleUnavailable
+@onready var _transaction_feedback: Label = %TransactionFeedback
+@onready var _sale_confirmation: PanelContainer = %SaleConfirmation
+@onready var _confirmation_message: Label = %ConfirmationMessage
+@onready var _confirm_sale_button: Button = %ConfirmSaleButton
+@onready var _cancel_sale_button: Button = %CancelSaleButton
 @onready var _logbook_empty: Label = %LogbookEmpty
 @onready var _logbook_grid: GridContainer = %LogbookGrid
 
 var _player: PlayerType
 var _inventory: FishInventoryType
 var _collection_log: CollectionLogType
+var _wallet: PlayerWalletType
+var _sale_service: FishSaleServiceType
+var _default_buyer: FishBuyerProfileType
 var _catalog: FishPoolType
 var _fishing_spot: FishingSpotType
 var _current_section: Section = Section.INVENTORY
@@ -50,6 +67,10 @@ var _prior_movement_enabled: bool = true
 var _prior_camera_input_enabled: bool = true
 var _control_snapshot_stored: bool = false
 var _menu_generation: int = 0
+var _confirmation_catch_id: StringName
+var _confirmation_buyer: FishBuyerProfileType
+var _confirmation_buyer_id: StringName
+var _sale_in_progress: bool = false
 
 
 func _ready() -> void:
@@ -62,6 +83,10 @@ func _ready() -> void:
 	_close_button.pressed.connect(close_menu)
 	_sort_option.item_selected.connect(_on_sort_selected)
 	_sort_direction.pressed.connect(_on_sort_direction_pressed)
+	_favorite_button.pressed.connect(_on_favorite_pressed)
+	_sell_button.pressed.connect(_on_sell_pressed)
+	_confirm_sale_button.pressed.connect(_on_confirm_sale_pressed)
+	_cancel_sale_button.pressed.connect(_close_sale_confirmation)
 	_sort_option.add_item("Catch order", SortMode.CATCH_ORDER)
 	_sort_option.add_item("Name", SortMode.NAME)
 	_sort_option.add_item("Rarity", SortMode.RARITY)
@@ -74,18 +99,26 @@ func setup(
 	player: PlayerType,
 	inventory: FishInventoryType,
 	collection_log: CollectionLogType,
+	wallet: PlayerWalletType,
+	sale_service: FishSaleServiceType,
+	default_buyer: FishBuyerProfileType,
 	catalog: FishPoolType,
 	fishing_spot: FishingSpotType,
 ) -> void:
 	_player = player
 	_inventory = inventory
 	_collection_log = collection_log
+	_wallet = wallet
+	_sale_service = sale_service
+	_default_buyer = default_buyer
 	_catalog = catalog
 	_fishing_spot = fishing_spot
 	if not _inventory.catches_changed.is_connected(_on_inventory_changed):
 		_inventory.catches_changed.connect(_on_inventory_changed)
 	if not _collection_log.fish_discovered.is_connected(_on_fish_discovered):
 		_collection_log.fish_discovered.connect(_on_fish_discovered)
+	if not _wallet.balance_changed.is_connected(_on_wallet_balance_changed):
+		_wallet.balance_changed.connect(_on_wallet_balance_changed)
 	if not _fishing_spot.bite_activated.is_connected(_on_bite_activated):
 		_fishing_spot.bite_activated.connect(_on_bite_activated)
 	_refresh_all()
@@ -95,6 +128,13 @@ func _input(event: InputEvent) -> void:
 	if event is InputEventKey and event.echo:
 		return
 	if visible:
+		if (
+			event.is_action_pressed("ui_cancel")
+			and _sale_confirmation.visible
+		):
+			_close_sale_confirmation()
+			get_viewport().set_input_as_handled()
+			return
 		if (
 			event.is_action_pressed("open_backpack")
 			or event.is_action_pressed("ui_cancel")
@@ -135,6 +175,7 @@ func open_menu() -> void:
 func close_menu() -> void:
 	if not visible:
 		return
+	_close_sale_confirmation()
 	var closing_generation: int = _menu_generation
 	visible = false
 	get_viewport().gui_release_focus()
@@ -209,11 +250,14 @@ func _update_sort_direction_text() -> void:
 
 
 func _refresh_all() -> void:
+	_refresh_economy_summary()
 	_refresh_inventory()
 	_refresh_logbook()
 
 
 func _on_inventory_changed() -> void:
+	_refresh_economy_summary()
+	_revalidate_confirmation()
 	_refresh_inventory()
 	_refresh_logbook()
 
@@ -222,6 +266,26 @@ func _on_fish_discovered(_fish_id: StringName) -> void:
 	_refresh_logbook()
 
 
+func _on_wallet_balance_changed(
+	_new_balance: int,
+	_delta: int,
+) -> void:
+	_refresh_economy_summary()
+
+
+func _refresh_economy_summary() -> void:
+	if not is_node_ready():
+		return
+	var balance: int = _wallet.get_balance() if _wallet != null else 0
+	var held_total: int = (
+		_inventory.get_total_sale_value()
+		if _inventory != null
+		else 0
+	)
+	_wallet_balance.text = "Wallet: $%d" % balance
+	_held_value.text = "Held fish base value: $%d" % held_total
+
+
 func _refresh_inventory() -> void:
 	if not is_node_ready():
 		return
@@ -286,6 +350,9 @@ func _create_inventory_card(fish_catch: FishCatchType) -> Button:
 		fish_catch.fish.get_rarity_name(),
 		fish_catch.catch_sequence,
 	]
+	data_label.text += "\nBase value: $%d" % fish_catch.sale_value
+	if fish_catch.is_favorited:
+		data_label.text += " • ★"
 	data_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
 	data_label.mouse_filter = Control.MOUSE_FILTER_IGNORE
 	content.add_child(data_label)
@@ -308,16 +375,198 @@ func _update_inventory_detail(fish_catch: FishCatchType) -> void:
 		_detail_texture.visible = false
 		_detail_name.text = ""
 		_detail_data.text = ""
+		_favorite_button.disabled = true
+		_favorite_button.text = "Favorite"
+		_sell_button.disabled = true
+		_sale_unavailable.text = ""
+		_sale_unavailable.visible = false
 		return
 	_detail_texture.texture = fish_catch.fish.display_texture
 	_detail_texture.visible = fish_catch.fish.display_texture != null
 	_detail_name.text = fish_catch.fish.display_name
-	_detail_data.text = "%.2f lb\n%s\nCatch #%d\n%s" % [
+	var buyer_offer: int = (
+		_default_buyer.get_offer(fish_catch.sale_value)
+		if _default_buyer != null
+		else -1
+	)
+	var buyer_offer_text: String = "Buyer unavailable"
+	if buyer_offer >= 0:
+		buyer_offer_text = "%s offer: $%d" % [
+			_default_buyer.display_name,
+			buyer_offer,
+		]
+	_detail_data.text = "%.2f lb\n%s\nBase value: $%d\n%s\nCatch #%d\n%s" % [
 		fish_catch.weight_lb,
 		fish_catch.fish.get_rarity_name(),
+		fish_catch.sale_value,
+		buyer_offer_text,
 		fish_catch.catch_sequence,
 		String(fish_catch.catch_id),
 	]
+	_favorite_button.disabled = false
+	_favorite_button.text = (
+		"Unfavorite" if fish_catch.is_favorited else "Favorite"
+	)
+	var valid_sale_value: bool = fish_catch.sale_value >= 0
+	var valid_buyer: bool = (
+		_default_buyer != null
+		and _default_buyer.is_valid()
+		and buyer_offer >= 0
+	)
+	_sell_button.disabled = (
+		fish_catch.is_favorited
+		or not valid_sale_value
+		or not valid_buyer
+	)
+	if fish_catch.is_favorited:
+		_sale_unavailable.text = "Favorited fish cannot be sold."
+	elif not valid_sale_value:
+		_sale_unavailable.text = "Invalid sale value."
+	elif not valid_buyer:
+		_sale_unavailable.text = "Buyer is unavailable."
+	else:
+		_sale_unavailable.text = ""
+	_sale_unavailable.visible = not _sale_unavailable.text.is_empty()
+
+
+func _on_favorite_pressed() -> void:
+	if _inventory == null or _selected_catch_id.is_empty():
+		return
+	var fish_catch: FishCatchType = _inventory.get_catch_by_id(
+		_selected_catch_id
+	)
+	if fish_catch == null:
+		_refresh_inventory()
+		return
+	if _inventory.set_catch_favorited(
+		fish_catch.catch_id,
+		not fish_catch.is_favorited
+	):
+		_transaction_feedback.text = (
+			"%s %s."
+			% [
+				fish_catch.fish.display_name,
+				"favorited" if fish_catch.is_favorited else "unfavorited",
+			]
+		)
+
+
+func _on_sell_pressed() -> void:
+	if (
+		_inventory == null
+		or _sale_service == null
+		or _default_buyer == null
+		or _selected_catch_id.is_empty()
+	):
+		return
+	var fish_catch: FishCatchType = _inventory.get_catch_by_id(
+		_selected_catch_id
+	)
+	if fish_catch == null:
+		_transaction_feedback.text = "Fish no longer exists."
+		_refresh_inventory()
+		return
+	if fish_catch.is_favorited:
+		_transaction_feedback.text = "Favorited fish cannot be sold."
+		return
+	if fish_catch.sale_value < 0:
+		_transaction_feedback.text = "Invalid sale value."
+		return
+	if not _default_buyer.is_valid():
+		_transaction_feedback.text = "Buyer is unavailable."
+		return
+	var buyer_offer: int = _default_buyer.get_offer(
+		fish_catch.sale_value
+	)
+	if buyer_offer < 0:
+		_transaction_feedback.text = "Invalid buyer offer."
+		return
+	_confirmation_catch_id = fish_catch.catch_id
+	_confirmation_buyer = _default_buyer
+	_confirmation_buyer_id = _default_buyer.id
+	_confirmation_message.text = (
+		"Sell this %.2f lb %s to the %s for $%d?\nBase value: $%d"
+		% [
+			fish_catch.weight_lb,
+			fish_catch.fish.display_name,
+			_get_buyer_display_group(_default_buyer),
+			buyer_offer,
+			fish_catch.sale_value,
+		]
+	)
+	_sale_confirmation.visible = true
+	_confirm_sale_button.disabled = false
+	_confirm_sale_button.grab_focus()
+
+
+func _on_confirm_sale_pressed() -> void:
+	if (
+		_sale_in_progress
+		or _sale_service == null
+		or _confirmation_catch_id.is_empty()
+		or _confirmation_buyer == null
+		or _confirmation_buyer.id != _confirmation_buyer_id
+	):
+		return
+	_sale_in_progress = true
+	var requested_catch_id: StringName = _confirmation_catch_id
+	_confirm_sale_button.disabled = true
+	var result: FishSaleResultType = _sale_service.sell(
+		requested_catch_id,
+		_confirmation_buyer
+	)
+	_close_sale_confirmation()
+	_transaction_feedback.text = result.get_message()
+	_sale_in_progress = false
+	if result.is_success() and _selected_catch_id == requested_catch_id:
+		_selected_catch_id = StringName()
+	_refresh_all()
+	_inventory_tab.grab_focus()
+
+
+func _close_sale_confirmation() -> void:
+	_confirmation_catch_id = StringName()
+	_confirmation_buyer = null
+	_confirmation_buyer_id = StringName()
+	_sale_confirmation.visible = false
+	_confirmation_message.text = ""
+	_confirm_sale_button.disabled = false
+
+
+func _revalidate_confirmation() -> void:
+	if not _sale_confirmation.visible:
+		return
+	var fish_catch: FishCatchType
+	if _inventory != null:
+		fish_catch = _inventory.get_catch_by_id(_confirmation_catch_id)
+	if fish_catch == null:
+		_close_sale_confirmation()
+		_transaction_feedback.text = "Fish no longer exists."
+	elif fish_catch.is_favorited:
+		_close_sale_confirmation()
+		_transaction_feedback.text = "Favorited fish cannot be sold."
+	elif fish_catch.sale_value < 0:
+		_close_sale_confirmation()
+		_transaction_feedback.text = "Invalid sale value."
+	elif (
+		_confirmation_buyer == null
+		or _confirmation_buyer.id != _confirmation_buyer_id
+		or not _confirmation_buyer.is_valid()
+	):
+		_close_sale_confirmation()
+		_transaction_feedback.text = "Buyer is unavailable."
+
+
+func _get_buyer_display_group(
+	buyer: FishBuyerProfileType,
+) -> String:
+	if buyer == null:
+		return "buyer"
+	if not buyer.animal_name_plural.is_empty():
+		return buyer.animal_name_plural
+	if not buyer.display_name.is_empty():
+		return buyer.display_name
+	return "buyer"
 
 
 func _refresh_logbook() -> void:

ui/player_menu.tscn

@@ -58,6 +58,11 @@ size_flags_horizontal = 3
 theme_override_font_sizes/font_size = 24
 text = "Player Menu"
 
+[node name="WalletBalance" type="Label" parent="MenuPanel/Margin/Layout/Header"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Wallet: $0"
+
 [node name="InventoryTab" type="Button" parent="MenuPanel/Margin/Layout/Header"]
 unique_name_in_owner = true
 layout_mode = 2
@@ -78,6 +83,12 @@ text = "Close"
 [node name="Separator" type="HSeparator" parent="MenuPanel/Margin/Layout"]
 layout_mode = 2
 
+[node name="TransactionFeedback" type="Label" parent="MenuPanel/Margin/Layout"]
+unique_name_in_owner = true
+layout_mode = 2
+text = ""
+horizontal_alignment = 1
+
 [node name="Content" type="Control" parent="MenuPanel/Margin/Layout"]
 custom_minimum_size = Vector2(0, 530)
 layout_mode = 2
@@ -110,6 +121,15 @@ layout_mode = 2
 custom_minimum_size = Vector2(130, 0)
 text = "Newest first"
 
+[node name="SortSpacer" type="Control" parent="MenuPanel/Margin/Layout/Content/InventorySection/SortBar"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="HeldValue" type="Label" parent="MenuPanel/Margin/Layout/Content/InventorySection/SortBar"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Held fish base value: $0"
+
 [node name="InventoryBody" type="HSplitContainer" parent="MenuPanel/Margin/Layout/Content/InventorySection"]
 layout_mode = 2
 size_flags_vertical = 3
@@ -183,6 +203,25 @@ layout_mode = 2
 autowrap_mode = 2
 horizontal_alignment = 1
 
+[node name="FavoriteButton" type="Button" parent="MenuPanel/Margin/Layout/Content/InventorySection/InventoryBody/DetailPanel/DetailMargin/DetailStack"]
+unique_name_in_owner = true
+layout_mode = 2
+disabled = true
+text = "Favorite"
+
+[node name="SellButton" type="Button" parent="MenuPanel/Margin/Layout/Content/InventorySection/InventoryBody/DetailPanel/DetailMargin/DetailStack"]
+unique_name_in_owner = true
+layout_mode = 2
+disabled = true
+text = "Sell"
+
+[node name="SaleUnavailable" type="Label" parent="MenuPanel/Margin/Layout/Content/InventorySection/InventoryBody/DetailPanel/DetailMargin/DetailStack"]
+unique_name_in_owner = true
+visible = false
+layout_mode = 2
+autowrap_mode = 2
+horizontal_alignment = 1
+
 [node name="LogbookSection" type="VBoxContainer" parent="MenuPanel/Margin/Layout/Content"]
 unique_name_in_owner = true
 visible = false
@@ -211,3 +250,50 @@ size_flags_horizontal = 3
 theme_override_constants/h_separation = 12
 theme_override_constants/v_separation = 12
 columns = 4
+
+[node name="SaleConfirmation" type="PanelContainer" parent="MenuPanel/Margin/Layout/Content"]
+unique_name_in_owner = true
+visible = false
+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="ConfirmationMargin" type="MarginContainer" parent="MenuPanel/Margin/Layout/Content/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="ConfirmationLayout" type="VBoxContainer" parent="MenuPanel/Margin/Layout/Content/SaleConfirmation/ConfirmationMargin"]
+layout_mode = 2
+theme_override_constants/separation = 12
+
+[node name="ConfirmationMessage" type="Label" parent="MenuPanel/Margin/Layout/Content/SaleConfirmation/ConfirmationMargin/ConfirmationLayout"]
+unique_name_in_owner = true
+layout_mode = 2
+autowrap_mode = 2
+horizontal_alignment = 1
+
+[node name="ConfirmationButtons" type="HBoxContainer" parent="MenuPanel/Margin/Layout/Content/SaleConfirmation/ConfirmationMargin/ConfirmationLayout"]
+layout_mode = 2
+alignment = 1
+
+[node name="ConfirmSaleButton" type="Button" parent="MenuPanel/Margin/Layout/Content/SaleConfirmation/ConfirmationMargin/ConfirmationLayout/ConfirmationButtons"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Confirm"
+
+[node name="CancelSaleButton" type="Button" parent="MenuPanel/Margin/Layout/Content/SaleConfirmation/ConfirmationMargin/ConfirmationLayout/ConfirmationButtons"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Cancel"