Add SaveManager autoload singleton

	Globally handles save finding, creation, removal, changes, naming, and flushing
	Globally handles the session tags for the active save

Add SaveLoadMenu to GameSession
Add Start Date Panel and Save Panel loading to LobbyMenu
	Includes session tag filter

Add LobbyPanelButton and SavePanelButton scene and scripts

Add SaveResource to handle saving and loading individual save files
Add localization for SaveLoadMenu
Expand localization for additions to LobbyMenu
Add ButtonContainer variation type to default theme

Fulfill:
	UI-82, UI-83, UI-84, UI-85, UI-87, UI-89, UI-90, UI-91, UI-92, UI-94
	UIFUN-82, UIFUN-83, UIFUN-84, UIFUN-86, UIFUN-87, UIFUN-89
	FS-28

4 files changed, 324 insertions, 18 deletions

diff --git a/game/src/LobbyMenu/LobbyMenu.gd b/game/src/LobbyMenu/LobbyMenu.gd
index 4fc06c9..3cd3b40 100644
--- a/game/src/LobbyMenu/LobbyMenu.gd
+++ b/game/src/LobbyMenu/LobbyMenu.gd
@@ -5,25 +5,97 @@ extends HBoxContainer
 # * SS-12
 
 signal back_button_pressed
-signal save_game_selected
+signal save_game_selected(save : SaveResource)
+signal start_date_selected(index : int)
 
-@export
-var start_button : BaseButton
+@export var lobby_panel_button : PackedScene
+@export var save_scene : PackedScene
+
+@export_group("Nodes")
+@export var game_select_start_date : BoxContainer
+@export var game_select_save_tab : TabBar
+@export var game_select_save_list : BoxContainer
+@export var start_button : BaseButton
+@export var session_tag_line_edit : LineEdit
+@export var session_tag_dialog : ConfirmationDialog
+@export var delete_dialog : ConfirmationDialog
+
+func filter_for_tag(tag : StringName) -> void:
+	for child in game_select_save_list.get_children():
+		if tag == &"":
+			child.show()
+		else:
+			if tag == child.resource.session_tag:
+				child.show()
+			else:
+				child.hide()
+
+func _build_date_list() -> void:
+	var start_date := lobby_panel_button.instantiate()
+	start_date.set_text(&"1836")
+	start_date.pressed.connect(_on_start_date_panel_button_pressed.bind(start_date))
+	game_select_start_date.add_child(start_date)
+	start_date = lobby_panel_button.instantiate()
+	start_date.set_text(&"1863")
+	start_date.pressed.connect(_on_start_date_panel_button_pressed.bind(start_date))
+	game_select_start_date.add_child(start_date)
+
+var _id_to_tag : Array[StringName] = []
+func _build_save_list() -> void:
+	game_select_save_tab.add_tab("GAMELOBBY_SELECT_ALL")
+	for save_name in SaveManager._save_dictionary:
+		var save : SaveResource = SaveManager._save_dictionary[save_name]
+		var save_node := _create_save_node(save)
+		game_select_save_list.add_child(save_node)
+		if not _id_to_tag.has(save.session_tag):
+			_id_to_tag.append(save.session_tag)
+			game_select_save_tab.add_tab(save.session_tag)
+
+func _create_save_node(resource : SaveResource) -> Control:
+	var save_node = save_scene.instantiate()
+	save_node.resource = resource
+	save_node.pressed.connect(_on_save_node_pressed.bind(save_node))
+	save_node.request_to_delete.connect(_on_save_node_delete_requested.bind(save_node))
+	return save_node
+
+func _queue_clear_lists() -> void:
+	var full_list = game_select_start_date.get_children()
+	full_list.append_array(game_select_save_list.get_children())
+	for child in full_list:
+		child.queue_free()
+	game_select_save_tab.clear_tabs()
+	_id_to_tag.clear()
 
 # REQUIREMENTS:
 # * SS-16
 # * UIFUN-40
 func _on_back_button_button_down():
 	print("Returning to Main Menu.")
+	SaveManager.current_session_tag = ""
+	SaveManager.current_save = null
 	back_button_pressed.emit()
 
-
 # REQUIREMENTS:
 # * SS-21
-func _on_start_button_button_down():
+func _on_start_button_pressed():
 	print("Starting new game.")
-	get_tree().change_scene_to_file("res://src/GameSession/GameSession.tscn")
-
+	if SaveManager.current_session_tag == "":
+		# TODO: Get country tag as well
+		var datetime := Time.get_datetime_dict_from_system()
+		SaveManager.current_session_tag = "%s/%s/%s-%s:%s:%s" % [
+			datetime["day"],
+			datetime["month"],
+			datetime["year"],
+			datetime["hour"],
+			datetime["minute"],
+			datetime["second"]
+		]
+	if SaveManager.current_save == null and SaveManager.current_session_tag in _id_to_tag:
+		session_tag_dialog.dialog_text = tr("GAMELOBBY_SESSIONTAG_DIALOG_TEXT").format({ "session_tag": SaveManager.current_session_tag })
+		session_tag_dialog.title = tr("GAMELOBBY_SESSIONTAG_DIALOG_TITLE").format({ "session_tag": SaveManager.current_session_tag })
+		session_tag_dialog.popup_centered()
+	else:
+		_on_session_tag_dialog_confirmed()
 
 # REQUIREMENTS:
 # * SS-19
@@ -31,11 +103,60 @@ func _on_game_select_list_item_selected(index):
 	print("Selected save game: ", index)
 	save_game_selected.emit(index)
 
-
-func _on_save_game_selected(_index):
-	start_button.disabled = false
-
 # If the date is double-clicked, start the game!
 func _on_game_select_list_item_activated(index):
 	_on_game_select_list_item_selected(index)
-	_on_start_button_button_down()
+	_on_start_button_pressed()
+
+func _on_session_tag_edit_text_submitted(new_text):
+	SaveManager.current_session_tag = new_text
+	_on_start_button_pressed()
+
+func _on_session_tag_dialog_confirmed():
+	get_tree().change_scene_to_file("res://src/GameSession/GameSession.tscn")
+
+var _requested_node_to_delete : Control
+func _on_save_node_delete_requested(node : Control) -> void:
+	_requested_node_to_delete = node
+	delete_dialog.dialog_text = tr("GAMELOBBY_DELETE_DIALOG_TEXT").format({ "file_name": _requested_node_to_delete.resource.save_name })
+	delete_dialog.title = tr("GAMELOBBY_DELETE_DIALOG_TITLE").format({ "file_name": _requested_node_to_delete.resource.save_name })
+	delete_dialog.popup_centered()
+
+var _start_date_index := -1
+func _on_start_date_panel_button_pressed(node : Control) -> void:
+	if node is LobbyPanelButton and node.get_index(true) == _start_date_index:
+		_on_start_button_pressed()
+		return
+	_start_date_index = node.get_index(true)
+	start_button.disabled = false
+	start_date_selected.emit(_start_date_index)
+
+func _on_save_node_pressed(node : Control) -> void:
+	if SaveManager.current_save != null and SaveManager.current_save == node.resource:
+		SaveManager.current_session_tag = SaveManager.current_save.session_tag
+		_on_start_button_pressed()
+		return
+	SaveManager.current_save = node.resource
+	if SaveManager.current_save != null:
+		session_tag_line_edit.text = SaveManager.current_save.session_tag
+	else:
+		session_tag_line_edit.text = ""
+	start_button.disabled = false
+	save_game_selected.emit(SaveManager.current_save)
+
+func _on_game_select_save_tab_tab_changed(tab) -> void:
+	if tab == 0:
+		filter_for_tag(&"")
+	else:
+		filter_for_tag(_id_to_tag[tab - 1])
+
+func _on_delete_dialog_confirmed():
+	_requested_node_to_delete.resource.delete()
+	_requested_node_to_delete.queue_free()
+
+func _on_visibility_changed():
+	if visible:
+		_build_date_list()
+		_build_save_list()
+	else:
+		_queue_clear_lists()
diff --git a/game/src/LobbyMenu/LobbyMenu.tscn b/game/src/LobbyMenu/LobbyMenu.tscn
index 174fb72..63a66d8 100644
--- a/game/src/LobbyMenu/LobbyMenu.tscn
+++ b/game/src/LobbyMenu/LobbyMenu.tscn
@@ -1,8 +1,10 @@
-[gd_scene load_steps=2 format=3 uid="uid://crhkgngfnxf4y"]
+[gd_scene load_steps=4 format=3 uid="uid://do60kx0d3nrh4"]
 
 [ext_resource type="Script" path="res://src/LobbyMenu/LobbyMenu.gd" id="1_cvwum"]
+[ext_resource type="PackedScene" uid="uid://k71f5gibwmtc" path="res://src/LobbyMenu/LobbyPanelButton.tscn" id="2_exh17"]
+[ext_resource type="PackedScene" uid="uid://d2s7roinx2or7" path="res://src/SaveLoadMenu/SavePanelButton.tscn" id="3_4otj7"]
 
-[node name="LobbyMenu" type="HBoxContainer" node_paths=PackedStringArray("start_button")]
+[node name="LobbyMenu" type="HBoxContainer" node_paths=PackedStringArray("game_select_start_date", "game_select_save_tab", "game_select_save_list", "start_button", "session_tag_line_edit", "session_tag_dialog", "delete_dialog")]
 editor_description = "UI-36"
 anchors_preset = 15
 anchor_right = 1.0
@@ -10,7 +12,15 @@ anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
 script = ExtResource("1_cvwum")
+lobby_panel_button = ExtResource("2_exh17")
+save_scene = ExtResource("3_4otj7")
+game_select_start_date = NodePath("GameSelectPanel/VBoxContainer/GameSelectScroll/GameSelectList/GameSelectStartDate")
+game_select_save_tab = NodePath("GameSelectPanel/VBoxContainer/GameSelectScroll/GameSelectList/GameSelectSaveTab")
+game_select_save_list = NodePath("GameSelectPanel/VBoxContainer/GameSelectScroll/GameSelectList/GameSelectSaveList")
 start_button = NodePath("GameStartPanel/VBoxContainer/StartButton")
+session_tag_line_edit = NodePath("GameStartPanel/VBoxContainer/SessionTagEdit")
+session_tag_dialog = NodePath("SessionTagDialog")
+delete_dialog = NodePath("DeleteDialog")
 
 [node name="GameSelectPanel" type="PanelContainer" parent="."]
 layout_mode = 2
@@ -19,7 +29,30 @@ size_flags_horizontal = 3
 [node name="VBoxContainer" type="VBoxContainer" parent="GameSelectPanel"]
 layout_mode = 2
 
+[node name="GameSelectScroll" type="ScrollContainer" parent="GameSelectPanel/VBoxContainer"]
+layout_mode = 2
+size_flags_vertical = 3
+horizontal_scroll_mode = 0
+
+[node name="GameSelectList" type="VBoxContainer" parent="GameSelectPanel/VBoxContainer/GameSelectScroll"]
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+
+[node name="GameSelectStartDate" type="VBoxContainer" parent="GameSelectPanel/VBoxContainer/GameSelectScroll/GameSelectList"]
+layout_mode = 2
+
+[node name="GameSelectSaveTab" type="TabBar" parent="GameSelectPanel/VBoxContainer/GameSelectScroll/GameSelectList"]
+layout_mode = 2
+tab_count = 1
+tab_0/title = "GAMELOBBY_SELECT_ALL"
+
+[node name="GameSelectSaveList" type="VBoxContainer" parent="GameSelectPanel/VBoxContainer/GameSelectScroll/GameSelectList"]
+layout_mode = 2
+size_flags_vertical = 3
+
 [node name="GameSelectList" type="ItemList" parent="GameSelectPanel/VBoxContainer"]
+visible = false
 layout_mode = 2
 size_flags_vertical = 3
 item_count = 2
@@ -67,6 +100,10 @@ custom_minimum_size = Vector2(0, 150)
 layout_mode = 2
 size_flags_vertical = 3
 
+[node name="SessionTagEdit" type="LineEdit" parent="GameStartPanel/VBoxContainer"]
+layout_mode = 2
+placeholder_text = "GAMELOBBY_SESSION_TAG"
+
 [node name="StartButton" type="Button" parent="GameStartPanel/VBoxContainer"]
 editor_description = "UI-43"
 layout_mode = 2
@@ -77,8 +114,24 @@ text = "GAMELOBBY_START"
 custom_minimum_size = Vector2(0, 33)
 layout_mode = 2
 
-[connection signal="save_game_selected" from="." to="." method="_on_save_game_selected"]
-[connection signal="item_activated" from="GameSelectPanel/VBoxContainer/GameSelectList" to="." method="_on_game_select_list_item_activated"]
-[connection signal="item_selected" from="GameSelectPanel/VBoxContainer/GameSelectList" to="." method="_on_game_select_list_item_selected"]
+[node name="SessionTagDialog" type="ConfirmationDialog" parent="."]
+disable_3d = true
+title = "GAMELOBBY_SESSIONTAG_DIALOG_TITLE"
+ok_button_text = "DIALOG_OK"
+dialog_text = "GAMELOBBY_SESSIONTAG_DIALOG_TEXT"
+cancel_button_text = "DIALOG_CANCEL"
+
+[node name="DeleteDialog" type="ConfirmationDialog" parent="."]
+disable_3d = true
+title = "GAMELOBBY_DELETE_DIALOG_TITLE"
+ok_button_text = "DIALOG_OK"
+dialog_text = "GAMELOBBY_DELETE_DIALOG_TEXT"
+cancel_button_text = "DIALOG_CANCEL"
+
+[connection signal="visibility_changed" from="." to="." method="_on_visibility_changed"]
+[connection signal="tab_changed" from="GameSelectPanel/VBoxContainer/GameSelectScroll/GameSelectList/GameSelectSaveTab" to="." method="_on_game_select_save_tab_tab_changed"]
 [connection signal="button_down" from="GameSelectPanel/VBoxContainer/BackButton" to="." method="_on_back_button_button_down"]
-[connection signal="button_down" from="GameStartPanel/VBoxContainer/StartButton" to="." method="_on_start_button_button_down"]
+[connection signal="text_submitted" from="GameStartPanel/VBoxContainer/SessionTagEdit" to="." method="_on_session_tag_edit_text_submitted"]
+[connection signal="pressed" from="GameStartPanel/VBoxContainer/StartButton" to="." method="_on_start_button_pressed"]
+[connection signal="confirmed" from="SessionTagDialog" to="." method="_on_session_tag_dialog_confirmed"]
+[connection signal="confirmed" from="DeleteDialog" to="." method="_on_delete_dialog_confirmed"]
diff --git a/game/src/LobbyMenu/LobbyPanelButton.gd b/game/src/LobbyMenu/LobbyPanelButton.gd
new file mode 100644
index 0000000..5f3ea46
--- /dev/null
+++ b/game/src/LobbyMenu/LobbyPanelButton.gd
@@ -0,0 +1,102 @@
+@tool
+class_name LobbyPanelButton
+extends Container
+
+signal button_down
+signal button_up
+signal pressed
+signal toggled(button_pressed : bool)
+
+var is_start_date : bool:
+	get = _is_start_date
+
+func _is_start_date() -> bool:
+	return true
+
+@export_group("Nodes")
+@export var background_button : BaseButton
+@export var name_label : Label
+
+var text : StringName:
+	get = get_text,
+	set = set_text
+
+func get_text() -> StringName:
+	return name_label.text
+
+func set_text(value : StringName) -> void:
+	name_label.text = value
+
+func _get_minimum_size() -> Vector2:
+	var result := Vector2()
+	for child in get_children():
+		child = child as Control
+		if child == null or not child.visible:
+			continue
+		if child.top_level:
+			continue
+
+		var minsize : Vector2 = child.get_combined_minimum_size()
+		result.x = max(result.x, minsize.x)
+		result.y = max(result.y, minsize.y)
+
+	var draw_style := _get_draw_mode_style()
+	if draw_style != null:
+		result += draw_style.get_minimum_size()
+
+	return result
+
+func _get_draw_mode_name(support_rtl : bool = true) -> StringName:
+	var rtl := support_rtl and background_button != null and background_button.is_layout_rtl()
+	match background_button.get_draw_mode() if background_button != null else BaseButton.DrawMode.DRAW_NORMAL:
+		BaseButton.DrawMode.DRAW_NORMAL:
+			if rtl: return &"normal_mirrored"
+			return &"normal"
+		BaseButton.DrawMode.DRAW_PRESSED:
+			if rtl: return &"pressed_mirrored"
+			return &"pressed"
+		BaseButton.DrawMode.DRAW_HOVER:
+			if rtl: return &"hover_mirrored"
+			return &"hover"
+		BaseButton.DrawMode.DRAW_DISABLED:
+			if rtl: return &"disabled_mirrored"
+			return &"disabled"
+		BaseButton.DrawMode.DRAW_HOVER_PRESSED:
+			if rtl: return &"hover_pressed_mirrored"
+			return &"hover_pressed"
+	return &""
+
+func _get_draw_mode_style() -> StyleBox:
+	if background_button == null: return null
+	var result := background_button.get_theme_stylebox(_get_draw_mode_name())
+	if result == null:
+		return background_button.get_theme_stylebox(_get_draw_mode_name(false))
+	return result
+
+func _notification(what) -> void:
+	if what == NOTIFICATION_SORT_CHILDREN:
+		var _size := size
+		var offset := Vector2()
+		var style := _get_draw_mode_style()
+		if style != null:
+			_size -= style.get_minimum_size()
+			offset += style.get_offset()
+
+		for child in get_children():
+			child = child as Control
+			if child == null or not child.is_visible_in_tree() or child.top_level:
+				continue
+
+			fit_child_in_rect(child, Rect2(offset, _size))
+
+func _on_background_button_button_down():
+	button_down.emit()
+
+func _on_background_button_button_up():
+	button_up.emit()
+
+func _on_background_button_pressed():
+	pressed.emit()
+
+func _on_background_button_toggled(button_pressed : bool):
+	toggled.emit(button_pressed)
diff --git a/game/src/LobbyMenu/LobbyPanelButton.tscn b/game/src/LobbyMenu/LobbyPanelButton.tscn
new file mode 100644
index 0000000..2ba6c99
--- /dev/null
+++ b/game/src/LobbyMenu/LobbyPanelButton.tscn
@@ -0,0 +1,30 @@
+[gd_scene load_steps=2 format=3 uid="uid://k71f5gibwmtc"]
+
+[ext_resource type="Script" path="res://src/LobbyMenu/LobbyPanelButton.gd" id="1_327u2"]
+
+[node name="LobbyPanelButton" type="Container" node_paths=PackedStringArray("background_button", "name_label")]
+offset_right = 113.0
+offset_bottom = 48.0
+script = ExtResource("1_327u2")
+background_button = NodePath("BackgroundButton")
+name_label = NodePath("SaveList/NameLabel")
+
+[node name="BackgroundButton" type="Button" parent="."]
+layout_mode = 2
+theme_type_variation = &"ButtonContainer"
+
+[node name="SaveList" type="HBoxContainer" parent="."]
+layout_mode = 2
+size_flags_horizontal = 0
+mouse_filter = 2
+
+[node name="NameLabel" type="Label" parent="SaveList"]
+layout_mode = 2
+size_flags_vertical = 1
+text = "PLACEHOLDER"
+vertical_alignment = 1
+
+[connection signal="button_down" from="BackgroundButton" to="." method="_on_background_button_button_down"]
+[connection signal="button_up" from="BackgroundButton" to="." method="_on_background_button_button_up"]
+[connection signal="pressed" from="BackgroundButton" to="." method="_on_background_button_pressed"]
+[connection signal="toggled" from="BackgroundButton" to="." method="_on_background_button_toggled"]