Cleanup

big_number_museum.gd

@@ -1,49 +1,5 @@
 extends Control
 
-@onready var _generator: CurrencyGenerator = $VBoxContainer2/HBoxContainerGenerators/BuyOneButton
-@onready var _name_label: Label = $VBoxContainer2/Label
-@onready var _owned_value: Label = $VBoxContainer2/GeneratorStatsGrid/OwnedValue
-@onready var _next_cost_value: Label = $VBoxContainer2/GeneratorStatsGrid/NextCostValue
-@onready var _production_value: Label = $VBoxContainer2/GeneratorStatsGrid/ProductionValue
 
 func _ready() -> void:
-	_generator.purchase_completed.connect(_on_generator_updated)
+	pass
-	_generator.production_tick.connect(_on_generator_updated)
-	_generator.purchase_failed.connect(_on_generator_updated)
-
-	match _generator.currency:
-		GameState.CurrencyType.gold:
-			GameState.gold_changed.connect(_on_currency_changed)
-		GameState.CurrencyType.gems:
-			GameState.gems_changed.connect(_on_currency_changed)
-
-	_name_label.text = _generator.data.name
-	_refresh_generator_ui()
-
-func _on_buy_max_pressed() -> void:
-	_generator.buy_max()
-	_refresh_generator_ui()
-
-func _on_debug_income_pressed() -> void:
-	_generator.grant_currency(BigNumber.from_float(100.0))
-	_refresh_generator_ui()
-
-func _on_currency_changed(_new_value: BigNumber) -> void:
-	_refresh_generator_ui()
-
-func _on_generator_updated(_a = null, _b = null, _c = null, _d = null) -> void:
-	_refresh_generator_ui()
-
-func _refresh_generator_ui() -> void:
-	_owned_value.text = str(_generator.owned)
-	_next_cost_value.text = _generator.get_next_cost().to_string_suffix(2)
-
-	var production_per_second: float = 0.0
-	if _generator.data != null:
-		production_per_second = _generator.data.production_per_second(
-			_generator.owned,
-			_generator.run_multiplier,
-			_generator.purchased_count
-		)
-
-	_production_value.text = BigNumber.from_float(production_per_second).to_string_suffix(2)

big_number_museum.tscn

@@ -1,9 +1,8 @@
 [gd_scene format=3 uid="uid://b11eevc8qj18p"]
 
-[ext_resource type="Script" uid="uid://dtbxopw6ulhl8" path="res://generator/currency_generator.gd" id="1_h2bxk"]
 [ext_resource type="Script" uid="uid://coasop1lyw5rh" path="res://big_number_museum.gd" id="1_muwei"]
-[ext_resource type="Script" uid="uid://sp67wcb6s5nw" path="res://currency_label.gd" id="2_a7k0t"]
+[ext_resource type="PackedScene" uid="uid://btkxru2gdjsgc" path="res://currency_tile.tscn" id="2_a7k0t"]
-[ext_resource type="Resource" uid="uid://co0mcc2kvcpo5" path="res://generator/primary_generator.tres" id="3_m5m0g"]
+[ext_resource type="PackedScene" uid="uid://ckos7f22pnmyh" path="res://generator_container.tscn" id="2_h2bxk"]
 
 [node name="BigNumberMuseum" type="Control" unique_id=1249411984]
 layout_mode = 3
@@ -14,81 +13,37 @@ grow_horizontal = 2
 grow_vertical = 2
 script = ExtResource("1_muwei")
 
-[node name="VBoxContainer" type="VBoxContainer" parent="." unique_id=1937517070]
+[node name="CurrencyTile" parent="." unique_id=1440583137 instance=ExtResource("2_a7k0t")]
 layout_mode = 0
 offset_right = 404.0
-offset_bottom = 267.0
+offset_bottom = 31.0
 
-[node name="HBoxContainerCurrency" type="HBoxContainer" parent="VBoxContainer" unique_id=93448794]
+[node name="GoldGeneratorContainer" parent="." unique_id=1129190041 instance=ExtResource("2_h2bxk")]
-layout_mode = 2
-theme_override_constants/separation = 12
-
-[node name="Label" type="Label" parent="VBoxContainer/HBoxContainerCurrency" unique_id=1951729878]
-layout_mode = 2
-text = "Gold:"
-
-[node name="CurrencyValueLabel" type="Label" parent="VBoxContainer/HBoxContainerCurrency" unique_id=1036299287]
-layout_mode = 2
-text = "0"
-script = ExtResource("2_a7k0t")
-
-[node name="DebugIncomeButton" type="Button" parent="VBoxContainer/HBoxContainerCurrency" unique_id=780351266]
-layout_mode = 2
-text = "+100 Gold"
-
-[node name="VBoxContainer2" type="VBoxContainer" parent="." unique_id=1163554471]
 layout_mode = 0
-offset_left = 2.0
+anchors_preset = 0
-offset_top = 138.0
+anchor_left = 0.0
-offset_right = 266.0
+anchor_top = 0.0
-offset_bottom = 303.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+offset_left = 0.0
+offset_top = 81.0
+offset_right = 264.0
+offset_bottom = 246.0
+grow_horizontal = 1
+grow_vertical = 1
 
-[node name="Label" type="Label" parent="VBoxContainer2" unique_id=2116890422]
+[node name="GemsGeneratorContainer" parent="." unique_id=1519618562 instance=ExtResource("2_h2bxk")]
-layout_mode = 2
+layout_mode = 0
-text = "Generator"
+anchors_preset = 0
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+offset_left = 0.0
+offset_top = 246.0
+offset_right = 264.0
+offset_bottom = 411.0
+grow_horizontal = 1
+grow_vertical = 1
 
-[node name="HBoxContainerGenerators" type="HBoxContainer" parent="VBoxContainer2" unique_id=1759912851]
+[editable path="GemsGeneratorContainer"]
-layout_mode = 2
-theme_override_constants/separation = 8
-
-[node name="BuyOneButton" type="Button" parent="VBoxContainer2/HBoxContainerGenerators" unique_id=2126082317]
-layout_mode = 2
-text = "Buy x1"
-script = ExtResource("1_h2bxk")
-data = ExtResource("3_m5m0g")
-
-[node name="BuyMaxButton" type="Button" parent="VBoxContainer2/HBoxContainerGenerators" unique_id=171532995]
-layout_mode = 2
-text = "Buy Max"
-
-[node name="GeneratorStatsGrid" type="GridContainer" parent="VBoxContainer2" unique_id=88353659]
-layout_mode = 2
-columns = 2
-
-[node name="OwnedTitle" type="Label" parent="VBoxContainer2/GeneratorStatsGrid" unique_id=1743705746]
-layout_mode = 2
-text = "Owned"
-
-[node name="OwnedValue" type="Label" parent="VBoxContainer2/GeneratorStatsGrid" unique_id=890804662]
-layout_mode = 2
-text = "0"
-
-[node name="NextCostTitle" type="Label" parent="VBoxContainer2/GeneratorStatsGrid" unique_id=990792129]
-layout_mode = 2
-text = "Next Cost"
-
-[node name="NextCostValue" type="Label" parent="VBoxContainer2/GeneratorStatsGrid" unique_id=1296617914]
-layout_mode = 2
-text = "0"
-
-[node name="ProductionTitle" type="Label" parent="VBoxContainer2/GeneratorStatsGrid" unique_id=698748759]
-layout_mode = 2
-text = "Production / sec"
-
-[node name="ProductionValue" type="Label" parent="VBoxContainer2/GeneratorStatsGrid" unique_id=1059520776]
-layout_mode = 2
-text = "0"
-
-[connection signal="pressed" from="VBoxContainer/HBoxContainerCurrency/DebugIncomeButton" to="." method="_on_debug_income_pressed"]
-[connection signal="pressed" from="VBoxContainer2/HBoxContainerGenerators/BuyOneButton" to="VBoxContainer2/HBoxContainerGenerators/BuyOneButton" method="_on_pressed"]
-[connection signal="pressed" from="VBoxContainer2/HBoxContainerGenerators/BuyMaxButton" to="." method="_on_buy_max_pressed"]

currency_label.gd

@@ -1,9 +1,15 @@
-class_name CurrencyLabel
+class_name CurrencyTile
-extends Label
+extends HBoxContainer
 
 @export var currency: GameState.CurrencyType
+@export var data: CurrencyGeneratorData
+
+@onready var _label: Label = $Label
+@onready var _currency_label: Label = $CurrencyValueLabel
+@onready var _debug_button: Button = $DebugIncomeButton
 
 func _ready() -> void:
+	_label.text = data.name
 	match currency:
 		GameState.CurrencyType.gold:
 			GameState.gold_changed.connect(_on_currency_changed)
@@ -11,6 +17,7 @@ func _ready() -> void:
 			GameState.gems_changed.connect(_on_currency_changed)
 
 func _on_currency_changed(currency: BigNumber) -> void:
-	text = currency.to_string_suffix(2)
+	_currency_label.text = currency.to_string_suffix(2)
-
 
+func _on_debug_income_button_pressed() -> void:
+	GameState.add_gold(BigNumber.from_float(100))

currency_tile.tscn

@@ -0,0 +1,21 @@
+[gd_scene format=3 uid="uid://btkxru2gdjsgc"]
+
+[ext_resource type="Script" uid="uid://sp67wcb6s5nw" path="res://currency_label.gd" id="1_0hv07"]
+
+[node name="CurrencyTile" type="HBoxContainer" unique_id=1440583137]
+theme_override_constants/separation = 12
+script = ExtResource("1_0hv07")
+
+[node name="Label" type="Label" parent="." unique_id=89234840]
+layout_mode = 2
+text = "Gold:"
+
+[node name="CurrencyValueLabel" type="Label" parent="." unique_id=1469960585]
+layout_mode = 2
+text = "0"
+
+[node name="DebugIncomeButton" type="Button" parent="." unique_id=662695248]
+layout_mode = 2
+text = "+100 Gold"
+
+[connection signal="pressed" from="DebugIncomeButton" to="." method="_on_debug_income_button_pressed"]

game_state.gd

@@ -6,6 +6,7 @@ extends Node
 # ==========================================
 signal gold_changed(new_amount: BigNumber)
 signal gems_changed(new_amount: BigNumber)
+signal generator_state_changed(generator_id: StringName, state: Dictionary)
 
 enum CurrencyType { gold, gems }
 
@@ -14,11 +15,17 @@ enum CurrencyType { gold, gems }
 # ==========================================
 var gold: BigNumber = BigNumber.from_float(0.0)
 var gems: BigNumber = BigNumber.from_float(0.0)
+var generator_states: Dictionary = {}
 
 var last_save_time: int = 0 # Unix timestamp
 
 static var file_name: String = "user://idle_save.json"
 
+const GENERATOR_OWNED_KEY: String = "owned"
+const GENERATOR_PURCHASED_COUNT_KEY: String = "purchased_count"
+const GENERATOR_UNLOCKED_KEY: String = "unlocked"
+const GENERATOR_AVAILABLE_KEY: String = "available"
+
 func _ready() -> void:
 	load_game()
 
@@ -49,6 +56,76 @@ func spend_gems(cost: BigNumber) -> bool:
 		return true
 	return false
 
+func register_generator(generator_id: StringName, unlocked: bool = false, available: bool = false) -> void:
+	var key: String = String(generator_id)
+	if key.is_empty():
+		return
+
+	if generator_states.has(key):
+		var existing_raw: Variant = generator_states.get(key)
+		if existing_raw is Dictionary:
+			generator_states[key] = _sanitize_generator_state(existing_raw, unlocked, available)
+			return
+
+	var new_state: Dictionary = _default_generator_state(unlocked, available)
+	generator_states[key] = new_state
+	generator_state_changed.emit(StringName(key), new_state.duplicate(true))
+
+func get_generator_state(generator_id: StringName) -> Dictionary:
+	return _get_generator_state(generator_id).duplicate(true)
+
+func get_generator_owned(generator_id: StringName) -> int:
+	var state: Dictionary = _get_generator_state(generator_id)
+	return int(state.get(GENERATOR_OWNED_KEY, 0))
+
+func set_generator_owned(generator_id: StringName, value: int) -> void:
+	var state: Dictionary = _get_generator_state(generator_id)
+	var next_owned: int = maxi(value, 0)
+	if int(state.get(GENERATOR_OWNED_KEY, 0)) == next_owned:
+		return
+
+	state[GENERATOR_OWNED_KEY] = next_owned
+	state[GENERATOR_PURCHASED_COUNT_KEY] = maxi(int(state.get(GENERATOR_PURCHASED_COUNT_KEY, 0)), next_owned)
+	_set_generator_state(generator_id, state)
+
+func get_generator_purchased_count(generator_id: StringName) -> int:
+	var state: Dictionary = _get_generator_state(generator_id)
+	return int(state.get(GENERATOR_PURCHASED_COUNT_KEY, 0))
+
+func set_generator_purchased_count(generator_id: StringName, value: int) -> void:
+	var state: Dictionary = _get_generator_state(generator_id)
+	var min_purchased: int = int(state.get(GENERATOR_OWNED_KEY, 0))
+	var next_purchased: int = maxi(value, min_purchased)
+	if int(state.get(GENERATOR_PURCHASED_COUNT_KEY, 0)) == next_purchased:
+		return
+
+	state[GENERATOR_PURCHASED_COUNT_KEY] = next_purchased
+	_set_generator_state(generator_id, state)
+
+func is_generator_unlocked(generator_id: StringName) -> bool:
+	var state: Dictionary = _get_generator_state(generator_id)
+	return bool(state.get(GENERATOR_UNLOCKED_KEY, false))
+
+func set_generator_unlocked(generator_id: StringName, value: bool) -> void:
+	var state: Dictionary = _get_generator_state(generator_id)
+	if bool(state.get(GENERATOR_UNLOCKED_KEY, false)) == value:
+		return
+
+	state[GENERATOR_UNLOCKED_KEY] = value
+	_set_generator_state(generator_id, state)
+
+func is_generator_available(generator_id: StringName) -> bool:
+	var state: Dictionary = _get_generator_state(generator_id)
+	return bool(state.get(GENERATOR_AVAILABLE_KEY, false))
+
+func set_generator_available(generator_id: StringName, value: bool) -> void:
+	var state: Dictionary = _get_generator_state(generator_id)
+	if bool(state.get(GENERATOR_AVAILABLE_KEY, false)) == value:
+		return
+
+	state[GENERATOR_AVAILABLE_KEY] = value
+	_set_generator_state(generator_id, state)
+
 # ==========================================
 # PERSISTENCE (Save/Load)
 # ==========================================
@@ -56,6 +133,7 @@ func save_game() -> void:
 	var save_data = {
 		"gold": gold.serialize(),
 		"gems": gems.serialize(),
+		"generator_states": _serialize_generator_states(),
 		"last_save_time": Time.get_unix_time_from_system()
 	}
 	
@@ -73,4 +151,123 @@ func load_game() -> void:
 		if parsed is Dictionary:
 			gold = BigNumber.deserialize(parsed.get("gold", {}))
 			gems = BigNumber.deserialize(parsed.get("gems", {}))
+			generator_states = _deserialize_generator_states(parsed.get("generator_states", {}))
 			last_save_time = parsed.get("last_save_time", Time.get_unix_time_from_system())
+
+func _default_generator_state(unlocked: bool, available: bool) -> Dictionary:
+	return {
+		GENERATOR_OWNED_KEY: 0,
+		GENERATOR_PURCHASED_COUNT_KEY: 0,
+		GENERATOR_UNLOCKED_KEY: unlocked,
+		GENERATOR_AVAILABLE_KEY: available,
+	}
+
+func _get_generator_state(generator_id: StringName) -> Dictionary:
+	var key: String = String(generator_id)
+	if key.is_empty():
+		return _default_generator_state(false, false)
+
+	if not generator_states.has(key):
+		register_generator(generator_id)
+
+	var existing_raw: Variant = generator_states.get(key, _default_generator_state(false, false))
+	if existing_raw is Dictionary:
+		var state: Dictionary = existing_raw
+		var sanitized: Dictionary = _sanitize_generator_state(state, false, false)
+		generator_states[key] = sanitized
+		return sanitized
+
+	var fallback: Dictionary = _default_generator_state(false, false)
+	generator_states[key] = fallback
+	return fallback
+
+func _set_generator_state(generator_id: StringName, state: Dictionary) -> void:
+	var key: String = String(generator_id)
+	if key.is_empty():
+		return
+
+	var sanitized: Dictionary = _sanitize_generator_state(state, false, false)
+	generator_states[key] = sanitized
+	generator_state_changed.emit(StringName(key), sanitized.duplicate(true))
+
+func _serialize_generator_states() -> Dictionary:
+	var result: Dictionary = {}
+	for key_variant in generator_states.keys():
+		var key: String = String(key_variant)
+		if key.is_empty():
+			continue
+
+		var value: Variant = generator_states.get(key_variant)
+		if value is Dictionary:
+			result[key] = _serialize_generator_state_entry(value)
+	return result
+
+func _deserialize_generator_states(raw_value: Variant) -> Dictionary:
+	var result: Dictionary = {}
+	if not (raw_value is Dictionary):
+		return result
+
+	for key_variant in raw_value.keys():
+		var key: String = String(key_variant)
+		if key.is_empty():
+			continue
+
+		var entry: Variant = raw_value.get(key_variant)
+		if entry is Dictionary:
+			result[key] = _deserialize_generator_state_entry(entry)
+	return result
+
+func _serialize_generator_state_entry(raw_state: Dictionary) -> Dictionary:
+	var owned_value: int = _to_non_negative_int(raw_state.get(GENERATOR_OWNED_KEY, 0), 0)
+	var purchased_value: int = _to_non_negative_int(raw_state.get(GENERATOR_PURCHASED_COUNT_KEY, owned_value), owned_value)
+
+	var serialized_state: Dictionary = {
+		GENERATOR_OWNED_KEY: owned_value,
+		GENERATOR_PURCHASED_COUNT_KEY: maxi(purchased_value, owned_value),
+	}
+
+	if raw_state.has(GENERATOR_UNLOCKED_KEY) and raw_state.get(GENERATOR_UNLOCKED_KEY) is bool:
+		serialized_state[GENERATOR_UNLOCKED_KEY] = raw_state.get(GENERATOR_UNLOCKED_KEY)
+	if raw_state.has(GENERATOR_AVAILABLE_KEY) and raw_state.get(GENERATOR_AVAILABLE_KEY) is bool:
+		serialized_state[GENERATOR_AVAILABLE_KEY] = raw_state.get(GENERATOR_AVAILABLE_KEY)
+
+	return serialized_state
+
+func _deserialize_generator_state_entry(raw_state: Dictionary) -> Dictionary:
+	var owned_value: int = _to_non_negative_int(raw_state.get(GENERATOR_OWNED_KEY, 0), 0)
+	var purchased_value: int = _to_non_negative_int(raw_state.get(GENERATOR_PURCHASED_COUNT_KEY, owned_value), owned_value)
+
+	var parsed_state: Dictionary = {
+		GENERATOR_OWNED_KEY: owned_value,
+		GENERATOR_PURCHASED_COUNT_KEY: maxi(purchased_value, owned_value),
+	}
+
+	if raw_state.has(GENERATOR_UNLOCKED_KEY) and raw_state.get(GENERATOR_UNLOCKED_KEY) is bool:
+		parsed_state[GENERATOR_UNLOCKED_KEY] = raw_state.get(GENERATOR_UNLOCKED_KEY)
+	if raw_state.has(GENERATOR_AVAILABLE_KEY) and raw_state.get(GENERATOR_AVAILABLE_KEY) is bool:
+		parsed_state[GENERATOR_AVAILABLE_KEY] = raw_state.get(GENERATOR_AVAILABLE_KEY)
+
+	return parsed_state
+
+func _sanitize_generator_state(raw_state: Dictionary, default_unlocked: bool, default_available: bool) -> Dictionary:
+	var owned_value: int = _to_non_negative_int(raw_state.get(GENERATOR_OWNED_KEY, 0), 0)
+	var purchased_value: int = _to_non_negative_int(raw_state.get(GENERATOR_PURCHASED_COUNT_KEY, owned_value), owned_value)
+
+	return {
+		GENERATOR_OWNED_KEY: owned_value,
+		GENERATOR_PURCHASED_COUNT_KEY: maxi(purchased_value, owned_value),
+		GENERATOR_UNLOCKED_KEY: _to_bool(raw_state.get(GENERATOR_UNLOCKED_KEY, default_unlocked), default_unlocked),
+		GENERATOR_AVAILABLE_KEY: _to_bool(raw_state.get(GENERATOR_AVAILABLE_KEY, default_available), default_available),
+	}
+
+func _to_non_negative_int(value: Variant, fallback: int = 0) -> int:
+	if value is int:
+		return maxi(value, 0)
+	if value is float:
+		return maxi(int(value), 0)
+	return maxi(fallback, 0)
+
+func _to_bool(value: Variant, fallback: bool) -> bool:
+	if value is bool:
+		return value
+	return fallback

generator/currency_generator.gd

@@ -12,21 +12,59 @@ const HUGE_COST_EXPONENT: int = 1000000
 @export var is_automatic: bool = true
 @export var press_buys_generator: bool = true
 @export var run_multiplier: float = 1.0
+@export var starts_unlocked: bool = true
+@export var starts_available: bool = true
 
 ## Manual click fallback when no data is assigned.
 @export var click_mantissa: float = 1.0
 @export var click_exponent: int = 0
 
-var owned: int = 0
+var owned: int:
-var purchased_count: int = 0
+	get:
+		_ensure_registered()
+		return GameState.get_generator_owned(_generator_id)
+	set(value):
+		_ensure_registered()
+		GameState.set_generator_owned(_generator_id, value)
+
+var purchased_count: int:
+	get:
+		_ensure_registered()
+		return GameState.get_generator_purchased_count(_generator_id)
+	set(value):
+		_ensure_registered()
+		GameState.set_generator_purchased_count(_generator_id, value)
+
+var is_unlocked: bool:
+	get:
+		_ensure_registered()
+		return GameState.is_generator_unlocked(_generator_id)
+	set(value):
+		_ensure_registered()
+		GameState.set_generator_unlocked(_generator_id, value)
+
+var is_available: bool:
+	get:
+		_ensure_registered()
+		return GameState.is_generator_available(_generator_id)
+	set(value):
+		_ensure_registered()
+		GameState.set_generator_available(_generator_id, value)
+
 var cycle_progress_seconds: float = 0.0
+var _generator_id: StringName = &""
+var _is_registered: bool = false
 
 func _ready() -> void:
+	_generator_id = _resolve_generator_id()
+	_ensure_registered()
 	cycle_progress_seconds = 0.0
 
 func _process(delta: float) -> void:
 	if not is_automatic:
 		return
+	if not is_available_to_player():
+		return
 	if data == null or owned <= 0:
 		return
 
@@ -63,6 +101,9 @@ func get_cost_for_amount(amount: int = 1) -> BigNumber:
 	return _float_to_big_number(raw_cost)
 
 func can_buy(amount: int = 1) -> bool:
+	if not is_available_to_player():
+		return false
+
 	var cost: BigNumber = get_cost_for_amount(amount)
 	var current: BigNumber = _get_currency_amount()
 	return current.is_greater_than(cost) or current.is_equal_to(cost)
@@ -70,6 +111,8 @@ func can_buy(amount: int = 1) -> bool:
 func buy(amount: int = 1) -> bool:
 	if data == null:
 		return false
+	if not is_available_to_player():
+		return false
 
 	var safe_amount: int = maxi(amount, 1)
 	var total_cost: BigNumber = get_cost_for_amount(safe_amount)
@@ -85,6 +128,8 @@ func buy(amount: int = 1) -> bool:
 func buy_max() -> int:
 	if data == null:
 		return 0
+	if not is_available_to_player():
+		return 0
 
 	var available_currency: float = _big_number_to_float(_get_currency_amount())
 	var estimated_max: int = data.max_affordable(owned, available_currency)
@@ -108,6 +153,9 @@ func buy_max() -> int:
 	return best if buy(best) else 0
 
 func _on_pressed() -> void:
+	if not is_available_to_player():
+		return
+
 	if data != null and press_buys_generator:
 		buy(1)
 		return
@@ -117,6 +165,13 @@ func _on_pressed() -> void:
 func grant_currency(amount: BigNumber) -> void:
 	_add_currency(amount)
 
+func get_generator_id() -> StringName:
+	_ensure_registered()
+	return _generator_id
+
+func is_available_to_player() -> bool:
+	return is_unlocked and is_available
+
 func _add_currency(amount: BigNumber) -> void:
 	match currency:
 		GameState.CurrencyType.gold:
@@ -160,3 +215,36 @@ func _big_number_to_float(value: BigNumber) -> float:
 	if value.exponent < -308:
 		return 0.0
 	return value.mantissa * pow(10.0, float(value.exponent))
+
+func _resolve_generator_id() -> StringName:
+	if data != null:
+		var data_id: String = String(data.id)
+		if not data_id.is_empty():
+			return StringName(data_id)
+
+	if not String(name).is_empty():
+		return StringName(String(name))
+
+	return &"generator"
+
+func _ensure_registered() -> void:
+	if _is_registered:
+		return
+
+	if _generator_id == &"":
+		_generator_id = _resolve_generator_id()
+	if _generator_id == &"":
+		return
+
+	GameState.register_generator(_generator_id, _default_unlocked_state(), _default_available_state())
+	_is_registered = true
+
+func _default_unlocked_state() -> bool:
+	if data != null:
+		return data.starts_unlocked
+	return starts_unlocked
+
+func _default_available_state() -> bool:
+	if data != null:
+		return data.starts_available
+	return starts_available

generator/currency_generator_data.gd

@@ -3,6 +3,8 @@ extends Resource
 
 @export var id: StringName = &""
 @export var name: String = ""
+@export var starts_unlocked: bool = true
+@export var starts_available: bool = true
 
 ## Base cost and exponential growth (part I): cost_next = b * r^owned
 @export var initial_cost: float = 10.0

generator/secondary_generator.tres

@@ -0,0 +1,13 @@
+[gd_resource type="Resource" script_class="CurrencyGeneratorData" format=3 uid="uid://04pmc034qupd"]
+
+[ext_resource type="Script" uid="uid://b00tqsuhxdy0d" path="res://generator/currency_generator_data.gd" id="1_s3g28"]
+
+[resource]
+script = ExtResource("1_s3g28")
+id = &"Gems"
+name = "Gems Mine"
+initial_cost = 60.0
+initial_time = 3.0
+initial_revenue = 60.0
+initial_productivity = 20.0
+metadata/_custom_type_script = "uid://b00tqsuhxdy0d"

generator_container.gd

@@ -0,0 +1,66 @@
+extends VBoxContainer
+
+@export var _generator: CurrencyGenerator
+
+@onready var _buy_button: Button = $HBoxContainerGenerators/BuyOneButton
+@onready var _buy_max_button: Button = $HBoxContainerGenerators/BuyMaxButton
+@onready var _name_label: Label = $Label
+@onready var _owned_value: Label = $GeneratorStatsGrid/OwnedValue
+@onready var _next_cost_value: Label = $GeneratorStatsGrid/NextCostValue
+@onready var _production_value: Label = $GeneratorStatsGrid/ProductionValue
+
+func _ready() -> void:
+	_generator.purchase_completed.connect(_on_generator_updated)
+	_generator.production_tick.connect(_on_generator_updated)
+	_generator.purchase_failed.connect(_on_generator_updated)
+
+	match _generator.currency:
+		GameState.CurrencyType.gold:
+			GameState.gold_changed.connect(_on_currency_changed)
+		GameState.CurrencyType.gems:
+			GameState.gems_changed.connect(_on_currency_changed)
+
+	GameState.generator_state_changed.connect(_on_generator_state_changed)
+
+	_name_label.text = _generator.data.name if _generator.data != null else "Generator"
+	_refresh_generator_ui()
+
+func _on_buy_pressed() -> void:
+	_generator.buy(1)
+	_refresh_generator_ui()
+
+func _on_buy_max_pressed() -> void:
+	_generator.buy_max()
+	_refresh_generator_ui()
+
+func _on_debug_income_pressed() -> void:
+	_generator.grant_currency(BigNumber.from_float(100.0))
+	_refresh_generator_ui()
+
+func _on_currency_changed(_new_value: BigNumber) -> void:
+	_refresh_generator_ui()
+
+func _on_generator_updated(_a = null, _b = null, _c = null, _d = null) -> void:
+	_refresh_generator_ui()
+
+func _on_generator_state_changed(generator_id: StringName, _state: Dictionary) -> void:
+	if generator_id == _generator.get_generator_id():
+		_refresh_generator_ui()
+	
+func _refresh_generator_ui() -> void:
+	var can_interact: bool = _generator.is_available_to_player()
+	_buy_button.disabled = not can_interact
+	_buy_max_button.disabled = not can_interact
+
+	_owned_value.text = str(_generator.owned)
+	_next_cost_value.text = _generator.get_next_cost().to_string_suffix(2) if can_interact else "-"
+
+	var production_per_second: float = 0.0
+	if _generator.data != null and can_interact:
+		production_per_second = _generator.data.production_per_second(
+			_generator.owned,
+			_generator.run_multiplier,
+			_generator.purchased_count
+		)
+
+	_production_value.text = BigNumber.from_float(production_per_second).to_string_suffix(2)

generator_container.gd.uid

@@ -0,0 +1 @@
+uid://es14nqk6vrrk

generator_container.tscn

@@ -0,0 +1,64 @@
+[gd_scene format=3 uid="uid://ckos7f22pnmyh"]
+
+[ext_resource type="Script" uid="uid://es14nqk6vrrk" path="res://generator_container.gd" id="1_8wouw"]
+
+[node name="GeneratorContainer" type="VBoxContainer" unique_id=1129190041]
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -132.0
+offset_top = -82.5
+offset_right = 132.0
+offset_bottom = 82.5
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_8wouw")
+
+[node name="Label" type="Label" parent="." unique_id=1867673612]
+layout_mode = 2
+text = "Generator"
+
+[node name="HBoxContainerGenerators" type="HBoxContainer" parent="." unique_id=2033456807]
+layout_mode = 2
+theme_override_constants/separation = 8
+
+[node name="BuyOneButton" type="Button" parent="HBoxContainerGenerators" unique_id=1171095139]
+layout_mode = 2
+text = "Buy x1"
+
+[node name="BuyMaxButton" type="Button" parent="HBoxContainerGenerators" unique_id=871628534]
+layout_mode = 2
+text = "Buy Max"
+
+[node name="GeneratorStatsGrid" type="GridContainer" parent="." unique_id=745078076]
+layout_mode = 2
+columns = 2
+
+[node name="OwnedTitle" type="Label" parent="GeneratorStatsGrid" unique_id=891417119]
+layout_mode = 2
+text = "Owned"
+
+[node name="OwnedValue" type="Label" parent="GeneratorStatsGrid" unique_id=549086894]
+layout_mode = 2
+text = "0"
+
+[node name="NextCostTitle" type="Label" parent="GeneratorStatsGrid" unique_id=303459589]
+layout_mode = 2
+text = "Next Cost"
+
+[node name="NextCostValue" type="Label" parent="GeneratorStatsGrid" unique_id=50480604]
+layout_mode = 2
+text = "0"
+
+[node name="ProductionTitle" type="Label" parent="GeneratorStatsGrid" unique_id=2139535774]
+layout_mode = 2
+text = "Production / sec"
+
+[node name="ProductionValue" type="Label" parent="GeneratorStatsGrid" unique_id=938669936]
+layout_mode = 2
+text = "0"
+
+[connection signal="pressed" from="HBoxContainerGenerators/BuyOneButton" to="." method="_on_buy_pressed"]
+[connection signal="pressed" from="HBoxContainerGenerators/BuyMaxButton" to="." method="_on_buy_max_pressed"]

generator_museum.tscn

@@ -0,0 +1,53 @@
+[gd_scene format=3 uid="uid://cfryecxmcg8hw"]
+
+[ext_resource type="Script" uid="uid://dtbxopw6ulhl8" path="res://generator/currency_generator.gd" id="1_pl17p"]
+[ext_resource type="Resource" uid="uid://co0mcc2kvcpo5" path="res://generator/primary_generator.tres" id="2_x5lt1"]
+[ext_resource type="Resource" uid="uid://04pmc034qupd" path="res://generator/secondary_generator.tres" id="3_dc82g"]
+[ext_resource type="PackedScene" uid="uid://ckos7f22pnmyh" path="res://generator_container.tscn" id="3_pw2a0"]
+[ext_resource type="PackedScene" uid="uid://btkxru2gdjsgc" path="res://currency_tile.tscn" id="3_x5lt1"]
+
+[node name="GeneratorMuseum" type="Node2D" unique_id=1219373683]
+
+[node name="GoldGenerator" type="Node2D" parent="." unique_id=964187690]
+script = ExtResource("1_pl17p")
+data = ExtResource("2_x5lt1")
+
+[node name="GemsGenerator" type="Node2D" parent="." unique_id=931294956]
+script = ExtResource("1_pl17p")
+data = ExtResource("3_dc82g")
+
+[node name="UI" type="Control" parent="." unique_id=452530906]
+layout_mode = 3
+anchors_preset = 0
+offset_right = 40.0
+offset_bottom = 40.0
+
+[node name="GoldCurrencyTile" parent="UI" unique_id=1440583137 instance=ExtResource("3_x5lt1")]
+layout_mode = 0
+offset_right = 160.0
+offset_bottom = 31.0
+data = ExtResource("2_x5lt1")
+
+[node name="GemsCurrencyTile" parent="UI" unique_id=1977342362 instance=ExtResource("3_x5lt1")]
+layout_mode = 0
+offset_top = 28.0
+offset_right = 160.0
+offset_bottom = 59.0
+currency = 1
+data = ExtResource("3_dc82g")
+
+[node name="GoldGeneratorContainer" parent="UI" unique_id=1129190041 node_paths=PackedStringArray("_generator") instance=ExtResource("3_pw2a0")]
+layout_mode = 1
+offset_left = -19.0
+offset_top = 53.0
+offset_right = 245.0
+offset_bottom = 218.0
+_generator = NodePath("../../GoldGenerator")
+
+[node name="GemsGeneratorContainer" parent="UI" unique_id=1999544736 node_paths=PackedStringArray("_generator") instance=ExtResource("3_pw2a0")]
+layout_mode = 1
+offset_left = -17.0
+offset_top = 215.0
+offset_right = 247.0
+offset_bottom = 380.0
+_generator = NodePath("../../GemsGenerator")