From 190751b6b5834f040fc04f395e150daac221f6c5 Mon Sep 17 00:00:00 2001
From: theludovyc <user.email>
Date: Sun, 15 Dec 2024 17:07:04 +0100
Subject: [PATCH] [ench] handle save system

Use RGT to save into a json in user data
Save buildings placement, money, production lines, storage and orders
---
 Scene/Menu/MainMenu.tscn                  |  39 ++++++++-
 Scene/RGT/loadSaveMenu.tscn               |  21 +++++
 Scene/RGT/savePanelContainer.tscn         |  49 +++++++++++
 Script/Gui/Menu/MainMenu.gd               |  18 ++++
 Script/RGT/LoadSaveMenu/load_save_menu.gd |   2 +-
 Script/RGT/MainMenu.gd                    |  46 +++++-----
 Script/RGT/load_save_menu.gd              |  85 ++++++++++++++++++
 Script/RGT/save_panel_container.gd        |  22 +++++
 Script/TheBuilder.gd                      |  75 ++++++++++++++++
 theLudovyc/EventBus.gd                    |   1 +
 theLudovyc/GUI/MarketContainer.gd         |  12 +++
 theLudovyc/GUI/ResourceOrder.gd           |   3 +
 theLudovyc/Game2D.gd                      | 100 ++++++++++++----------
 theLudovyc/Game2D.tscn                    |   9 +-
 theLudovyc/TheBank.gd                     |  17 ++++
 theLudovyc/TheFactory.gd                  |  34 +++++++-
 theLudovyc/TheMarket.gd                   |  51 ++++++++++-
 theLudovyc/TheStorage.gd                  |  19 +++-
 theLudovyc/TileMap.gd                     |   7 +-
 19 files changed, 529 insertions(+), 81 deletions(-)
 create mode 100644 Scene/RGT/loadSaveMenu.tscn
 create mode 100644 Scene/RGT/savePanelContainer.tscn
 create mode 100644 Script/RGT/load_save_menu.gd
 create mode 100644 Script/RGT/save_panel_container.gd
 create mode 100644 Script/TheBuilder.gd

diff --git a/Scene/Menu/MainMenu.tscn b/Scene/Menu/MainMenu.tscn
index 6bc6f495..528c3a8b 100644
--- a/Scene/Menu/MainMenu.tscn
+++ b/Scene/Menu/MainMenu.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=18 format=3 uid="uid://dytw0n3b07ux4"]
+[gd_scene load_steps=19 format=3 uid="uid://dytw0n3b07ux4"]
 
 [ext_resource type="Script" path="res://Script/Gui/Menu/MainMenu.gd" id="1"]
 [ext_resource type="Theme" uid="uid://lyx8kydf373j" path="res://Art/Theme/MenuTheme.tres" id="1_i4hjr"]
@@ -14,6 +14,7 @@
 [ext_resource type="Texture2D" uid="uid://fnwe2ccpoxu7" path="res://Art/Image/Gui/Icons/MainMenu/multiplayer_bw.png" id="11_ulff8"]
 [ext_resource type="Texture2D" uid="uid://dx3wfk7nhepo7" path="res://Art/Image/Gui/Logos/uh_no_text.svg" id="12_q4rhy"]
 [ext_resource type="Texture2D" uid="uid://lxvd4qr8d35m" path="res://Art/Image/Gui/Logos/uh_only_text.svg" id="13_yw4on"]
+[ext_resource type="PackedScene" uid="uid://choevp6ilq78t" path="res://Scene/RGT/loadSaveMenu.tscn" id="15_fufc5"]
 
 [sub_resource type="Animation" id="Animation_ft716"]
 length = 0.001
@@ -202,7 +203,6 @@ offset_left = -158.0
 offset_top = -160.0
 offset_right = -58.0
 offset_bottom = -60.0
-disabled = true
 text = "Load Game"
 texture = ExtResource("6_6uh4k")
 
@@ -347,6 +347,39 @@ texture = ExtResource("13_yw4on")
 expand_mode = 1
 stretch_mode = 4
 
+[node name="PanelMenu" type="Panel" parent="."]
+unique_name_in_owner = true
+visible = false
+layout_mode = 1
+anchors_preset = -1
+anchor_left = 0.1
+anchor_top = 0.1
+anchor_right = 0.9
+anchor_bottom = 0.9
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="LoadSaveMenu" parent="PanelMenu" instance=ExtResource("15_fufc5")]
+unique_name_in_owner = true
+visible = false
+layout_mode = 1
+metadata/_edit_use_anchors_ = true
+
+[node name="BackButton" type="Button" parent="PanelMenu"]
+layout_mode = 1
+anchors_preset = 7
+anchor_left = 0.5
+anchor_top = 1.0
+anchor_right = 0.5
+anchor_bottom = 1.0
+offset_left = -34.0
+offset_top = 16.0
+offset_right = 37.0
+offset_bottom = 61.0
+grow_horizontal = 2
+grow_vertical = 0
+text = "Back"
+
 [node name="VersionNumber" type="Label" parent="."]
 unique_name_in_owner = true
 layout_mode = 1
@@ -371,4 +404,6 @@ unique_name_in_owner = true
 dialog_text = "Are you sure you want to quit ?"
 
 [connection signal="pressed" from="Decoration/MenuItems/PlayButton" to="." method="_on_play_button_pressed"]
+[connection signal="pressed" from="Decoration/MenuItems/LoadButton" to="." method="_on_load_button_pressed"]
 [connection signal="pressed" from="Decoration/MenuItems/ExitButton" to="." method="_on_exit_button_pressed"]
+[connection signal="pressed" from="PanelMenu/BackButton" to="." method="_on_back_button_pressed"]
diff --git a/Scene/RGT/loadSaveMenu.tscn b/Scene/RGT/loadSaveMenu.tscn
new file mode 100644
index 00000000..7f418df5
--- /dev/null
+++ b/Scene/RGT/loadSaveMenu.tscn
@@ -0,0 +1,21 @@
+[gd_scene load_steps=2 format=3 uid="uid://choevp6ilq78t"]
+
+[ext_resource type="Script" path="res://Script/RGT/LoadSaveMenu/load_save_menu.gd" id="1_nyk5l"]
+
+[node name="LoadSaveMenu" type="ScrollContainer"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+horizontal_scroll_mode = 0
+script = ExtResource("1_nyk5l")
+
+[node name="VBoxContainer" type="VBoxContainer" parent="."]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="ConfirmationDialog" type="ConfirmationDialog" parent="."]
+unique_name_in_owner = true
+
+[connection signal="confirmed" from="ConfirmationDialog" to="." method="_on_confirmation_dialog_confirmed"]
diff --git a/Scene/RGT/savePanelContainer.tscn b/Scene/RGT/savePanelContainer.tscn
new file mode 100644
index 00000000..fcbd1f8f
--- /dev/null
+++ b/Scene/RGT/savePanelContainer.tscn
@@ -0,0 +1,49 @@
+[gd_scene load_steps=2 format=3 uid="uid://wal8k0gos06y"]
+
+[ext_resource type="Script" path="res://Script/RGT/LoadSaveMenu/save_panel_container.gd" id="1_np60c"]
+
+[node name="SavePanelContainer" type="PanelContainer"]
+script = ExtResource("1_np60c")
+
+[node name="MarginContainer" type="MarginContainer" parent="."]
+layout_mode = 2
+theme_override_constants/margin_left = 12
+theme_override_constants/margin_top = 12
+theme_override_constants/margin_right = 12
+theme_override_constants/margin_bottom = 12
+
+[node name="HBoxContainer" type="HBoxContainer" parent="MarginContainer"]
+layout_mode = 2
+theme_override_constants/separation = 8
+
+[node name="SaveTextureRect" type="TextureRect" parent="MarginContainer/HBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 4
+expand_mode = 5
+stretch_mode = 5
+
+[node name="NameLabel" type="Label" parent="MarginContainer/HBoxContainer"]
+unique_name_in_owner = true
+custom_minimum_size = Vector2(8, 8)
+layout_mode = 2
+size_flags_horizontal = 3
+horizontal_alignment = 1
+vertical_alignment = 1
+autowrap_mode = 1
+
+[node name="VBoxContainer" type="VBoxContainer" parent="MarginContainer/HBoxContainer"]
+layout_mode = 2
+size_flags_vertical = 4
+alignment = 1
+
+[node name="LoadButton" type="Button" parent="MarginContainer/HBoxContainer/VBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Load"
+
+[node name="DeleteButton" type="Button" parent="MarginContainer/HBoxContainer/VBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Delete"
diff --git a/Script/Gui/Menu/MainMenu.gd b/Script/Gui/Menu/MainMenu.gd
index 8425abf4..fffffefe 100644
--- a/Script/Gui/Menu/MainMenu.gd
+++ b/Script/Gui/Menu/MainMenu.gd
@@ -1,5 +1,7 @@
 extends MainMenu
 
+@onready var panel_menu = %PanelMenu
+
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(_delta):
 	if Input.is_anything_pressed():
@@ -8,3 +10,19 @@ func _process(_delta):
 		animation_player.seek(animation_player.current_animation_length)
 
 		set_process(false)
+		
+		
+func _open_sub_menu(menu : Control):
+	panel_menu.visible = true
+	
+	sub_menu = menu
+	sub_menu.show()
+
+func _close_sub_menu():
+	if sub_menu == null:
+		return
+	
+	panel_menu.visible = false
+	
+	sub_menu.hide()
+	sub_menu = null
diff --git a/Script/RGT/LoadSaveMenu/load_save_menu.gd b/Script/RGT/LoadSaveMenu/load_save_menu.gd
index 46aa67ad..abf2f73c 100644
--- a/Script/RGT/LoadSaveMenu/load_save_menu.gd
+++ b/Script/RGT/LoadSaveMenu/load_save_menu.gd
@@ -5,7 +5,7 @@ signal no_save_to_load
 const confirm_load = "Are you sure you want to load this save?\n"
 const confirm_delete = "Are you sure you want to delete this save ?\n"
 
-var SavePanel = preload("res://scenes/LoadSaveMenu/savePanelContainer.tscn")
+var SavePanel = preload("res://Scene/RGT/savePanelContainer.tscn")
 
 @onready var vbox_container = $VBoxContainer
 
diff --git a/Script/RGT/MainMenu.gd b/Script/RGT/MainMenu.gd
index 02361678..c217cb98 100644
--- a/Script/RGT/MainMenu.gd
+++ b/Script/RGT/MainMenu.gd
@@ -1,7 +1,7 @@
 class_name MainMenu
 extends Control
 
-#var sub_menu
+var sub_menu
 
 #@onready var continue_button = %ContinueButton
 @onready var play_button = %PlayButton
@@ -18,27 +18,27 @@ extends Control
 	exit_button
 ]
 
-#@onready var load_save_menu = %LoadSaveMenu
+@onready var load_save_menu = %LoadSaveMenu
 #@onready var option_menu = %OptionsMenu
 #@onready var credit_menu = %CreditsContainer
 
 @onready var confirm_popup = %ConfirmationDialog
 
-#func _open_sub_menu(menu : Control):
-	#if sub_menu == menu:
-		#sub_menu.visible = !sub_menu.visible
-		#return
-	#if sub_menu != null:
-		#sub_menu.hide()
-	#sub_menu = menu
-	#sub_menu.show()
+func _open_sub_menu(menu : Control):
+	if sub_menu == menu:
+		sub_menu.visible = !sub_menu.visible
+		return
+	if sub_menu != null:
+		sub_menu.hide()
+	sub_menu = menu
+	sub_menu.show()
 
 
-#func _close_sub_menu():
-	#if sub_menu == null:
-		#return
-	#sub_menu.hide()
-	#sub_menu = null
+func _close_sub_menu():
+	if sub_menu == null:
+		return
+	sub_menu.hide()
+	sub_menu = null
 
 
 #func _event_is_mouse_button_released(event : InputEvent):
@@ -86,8 +86,8 @@ func _on_play_button_pressed():
 	
 	SceneLoader.change_scene(RGT_Globals.first_game_scene_setting)
 
-#func _on_load_button_pressed() -> void:
-	#_open_sub_menu(load_save_menu)
+func _on_load_button_pressed() -> void:
+	_open_sub_menu(load_save_menu)
 #
 #func _on_options_button_pressed():
 	#_open_sub_menu(option_menu)
@@ -101,11 +101,11 @@ func _on_exit_button_pressed():
 func _on_exit_confirmed():
 	get_tree().quit()
 
-#func _on_back_button_pressed():
-	#_close_sub_menu()
+func _on_back_button_pressed():
+	_close_sub_menu()
 
-#func _on_load_save_menu_no_save_to_load() -> void:
+func _on_load_save_menu_no_save_to_load() -> void:
 	#continue_button.hide()
-	#load_button.hide()
-	#
-	#_close_sub_menu()
+	load_button.hide()
+	
+	_close_sub_menu()
diff --git a/Script/RGT/load_save_menu.gd b/Script/RGT/load_save_menu.gd
new file mode 100644
index 00000000..46aa67ad
--- /dev/null
+++ b/Script/RGT/load_save_menu.gd
@@ -0,0 +1,85 @@
+extends ScrollContainer
+
+signal no_save_to_load
+
+const confirm_load = "Are you sure you want to load this save?\n"
+const confirm_delete = "Are you sure you want to delete this save ?\n"
+
+var SavePanel = preload("res://scenes/LoadSaveMenu/savePanelContainer.tscn")
+
+@onready var vbox_container = $VBoxContainer
+
+@onready var confirm_dialog = %ConfirmationDialog
+
+enum Modes{
+	Loading,
+	Deleting
+}
+
+var popup_mode = Modes.Loading
+var current_save_file_name:String = ""
+var current_save_panel:Node = null
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	if SaveHelper.save_file_names.is_empty():
+		SaveHelper.update_save_file_names()
+	
+	if SaveHelper.save_file_names.is_empty():
+		push_warning("No save to load")
+		pass
+		
+	for save_file_name in SaveHelper.save_file_names:
+		var save_panel = SavePanel.instantiate()
+		
+		vbox_container.add_child(save_panel)
+		
+		save_panel.init(save_file_name)
+		
+		save_panel.load_button.pressed.connect(_on_load_button_pressed.bind(save_file_name))
+		save_panel.delete_button.pressed.connect(
+			_on_delete_button_pressed.bind(save_panel, save_file_name))
+
+func _on_load_button_pressed(save_file_name:String):
+	popup_mode = Modes.Loading
+	
+	current_save_file_name = save_file_name
+	
+	confirm_dialog.dialog_text = confirm_load + save_file_name
+	
+	confirm_dialog.popup_centered()
+	
+func _on_delete_button_pressed(save_panel:Node, save_file_name:String):
+	popup_mode = Modes.Deleting
+	
+	current_save_file_name = save_file_name
+	
+	current_save_panel = save_panel
+	
+	confirm_dialog.dialog_text = confirm_delete + save_file_name
+	
+	confirm_dialog.popup_centered()
+
+func _on_confirmation_dialog_confirmed() -> void:
+	match(popup_mode):
+		Modes.Loading:
+			SaveHelper.save_file_name_to_load = current_save_file_name
+	
+			SceneLoader.change_scene(RGT_Globals.first_game_scene_setting)
+			
+		Modes.Deleting:
+			SaveHelper.delete(current_save_file_name)
+			
+			# move to trash the screenshot
+			OS.move_to_trash(
+				ProjectSettings.globalize_path(
+					SaveHelper.get_save_file_path_without_extension(current_save_file_name) + ".png"
+				))
+				
+			SaveHelper.update_save_file_names()
+			
+			if SaveHelper.save_file_names.is_empty():
+				no_save_to_load.emit()
+			
+			current_save_panel.queue_free()
+	
diff --git a/Script/RGT/save_panel_container.gd b/Script/RGT/save_panel_container.gd
new file mode 100644
index 00000000..4dc6ae59
--- /dev/null
+++ b/Script/RGT/save_panel_container.gd
@@ -0,0 +1,22 @@
+extends PanelContainer
+
+@onready var name_label = %NameLabel
+@onready var save_texture = %SaveTextureRect
+@onready var load_button = %LoadButton
+@onready var delete_button = %DeleteButton
+
+func init(save_name:String):
+	name_label.text = save_name
+	
+	var image_path := SaveHelper.save_dir_path + "/" + save_name + ".png"
+	
+	if not FileAccess.file_exists(image_path):
+		return
+	
+	var image := Image.load_from_file(image_path)
+	
+	if image == null:
+		return
+		
+	save_texture.texture = ImageTexture.create_from_image(image)
+	
diff --git a/Script/TheBuilder.gd b/Script/TheBuilder.gd
new file mode 100644
index 00000000..80b9c369
--- /dev/null
+++ b/Script/TheBuilder.gd
@@ -0,0 +1,75 @@
+extends Node
+
+const Buildings_Scenes = {
+	Buildings.Ids.Warehouse: preload("res://theLudovyc/Building/Warehouse.tscn"),
+	Buildings.Ids.Tent: preload("res://theLudovyc/Building/Residential.tscn"),
+	Buildings.Ids.Lumberjack: preload("res://theLudovyc/Building/Lumberjack.tscn")
+}
+
+var warehouse: Building2D
+
+@onready var node_buildings:Node = %Buildings
+
+@onready var tilemap:TileMap = %TileMap
+
+func instantiate_building(building_id: Buildings.Ids) -> Building2D:
+	if not Buildings_Scenes.has(building_id):
+		push_error("Cannot instanciate a building with this Id: " + str(building_id))
+		
+		return null
+	
+	var instance = Buildings_Scenes[building_id].instantiate() as Building2D
+
+	node_buildings.add_child(instance)
+
+	return instance
+	
+func build(building_id:Buildings.Ids, pos:Vector2) -> Building2D:
+	var building = instantiate_building(building_id)
+	
+	if building == null:
+		push_error("Cannot create a building from null instance")
+		
+		return null
+	
+	building.position = pos
+	
+	tilemap.conclude_building_construction(building)
+
+	building.build()
+	return building
+	
+func build_warehouse(pos:Vector2):
+	warehouse = build(Buildings.Ids.Warehouse, pos)
+
+func get_buildings_save() -> Dictionary:
+	var datas:Array
+	
+	for child:Building2D in node_buildings.get_children():
+		datas.append([child.building_id, child.position.x, child.position.y])
+	
+	return {"Buildings":datas}
+	
+func load_buildings_save() -> Error:
+	if SaveHelper.last_loaded_data.is_empty():
+		return FAILED
+		
+	var buildings_data:Array = SaveHelper.last_loaded_data.get("Buildings", [])
+	
+	if buildings_data.is_empty():
+		return FAILED
+	
+	for building_data in SaveHelper.last_loaded_data["Buildings"]:
+		var building = build(building_data[0],
+				Vector2(building_data[1], building_data[2]))
+		
+		if build(building_data[0],
+			Vector2(building_data[1], building_data[2])) == null:
+			# TODO handle error with a popup and return to MainMenu
+			
+			pass
+		
+		if building_data[0] == 0:
+			warehouse = building
+	
+	return OK
diff --git a/theLudovyc/EventBus.gd b/theLudovyc/EventBus.gd
index 1316c5e0..2539cdfc 100644
--- a/theLudovyc/EventBus.gd
+++ b/theLudovyc/EventBus.gd
@@ -32,6 +32,7 @@ signal money_production_rate_updated(money_production_rate)
 ## ORDER
 signal ask_create_new_order(resource_type)
 signal send_create_new_order(resource_type)
+signal send_create_new_order_with_values(resource_type, buy_amount, sell_amount)
 
 signal ask_remove_order(resource_type)
 signal send_remove_order(resource_type)
diff --git a/theLudovyc/GUI/MarketContainer.gd b/theLudovyc/GUI/MarketContainer.gd
index ee6627fe..c73233be 100644
--- a/theLudovyc/GUI/MarketContainer.gd
+++ b/theLudovyc/GUI/MarketContainer.gd
@@ -20,6 +20,7 @@ func _ready():
 		event_bus = current_scene.get_node("EventBus") as EventBus
 
 		event_bus.send_create_new_order.connect(_on_receive_create_new_order)
+		event_bus.send_create_new_order_with_values.connect(_on_receive_create_new_order_with_values)
 		event_bus.send_remove_order.connect(_on_receive_remove_order)
 		event_bus.send_update_order_buy.connect(_on_receive_update_order_buy)
 		event_bus.money_production_rate_updated.connect(_on_receive_money_production_rate_updated)
@@ -44,6 +45,17 @@ func _on_receive_create_new_order(resource_type: Resources.Types):
 
 	order_nodes[resource_type] = resource_order
 
+func _on_receive_create_new_order_with_values(resource_type: Resources.Types,
+	buy_amount:int, sell_amount:int):
+	var resource_order = resource_order_scene.instantiate()
+
+	order_container.add_child(resource_order)
+
+	resource_order._resource_type = resource_type
+	resource_order.force_buy_value(buy_amount)
+	resource_order.force_sell_value(sell_amount)
+
+	order_nodes[resource_type] = resource_order
 
 func _on_receive_remove_order(resource_type: Resources.Types):
 	order_nodes[resource_type].queue_free()
diff --git a/theLudovyc/GUI/ResourceOrder.gd b/theLudovyc/GUI/ResourceOrder.gd
index 9e7befa2..92333bd0 100644
--- a/theLudovyc/GUI/ResourceOrder.gd
+++ b/theLudovyc/GUI/ResourceOrder.gd
@@ -5,6 +5,7 @@ var event_bus: EventBus = null
 @onready var _resource_texture = $VBoxContainer/TextureRect
 
 @onready var buy_spin_box = $BuySpinBox
+@onready var sell_spin_box = $SellSpinBox
 
 @onready var delete_button = $VBoxContainer/DeleteButton
 
@@ -41,6 +42,8 @@ func _on_SellSpinBox_value_changed(value):
 	if event_bus != null:
 		event_bus.ask_update_order_sell.emit(_resource_type, value)
 
+func force_sell_value(sell_amount:int):
+	sell_spin_box.set_value_no_signal(sell_amount)
 
 func _on_DeleteButton_pressed():
 	delete_button.disabled = true
diff --git a/theLudovyc/Game2D.gd b/theLudovyc/Game2D.gd
index e0d77173..c6a0feb0 100644
--- a/theLudovyc/Game2D.gd
+++ b/theLudovyc/Game2D.gd
@@ -7,23 +7,19 @@ class_name Game2D
 
 @onready var cam := $Camera2D
 
-@onready var node_entities := %Entities
+@onready var node_buildings := %Buildings
 
-@onready var the_storage := $TheStorage
-@onready var the_bank := $TheBank
 @onready var event_bus := $EventBus
 
+@onready var the_storage := $TheStorage
+@onready var the_bank := $TheBank
 @onready var the_factory := $TheFactory
+@onready var the_market := $TheMarket
+@onready var the_builder := $TheBuilder
 
 @onready var gui := $GUI
 @onready var pause_menu := %PauseMenu
 
-const Buildings_Scenes = {
-	Buildings.Ids.Warehouse: preload("res://theLudovyc/Building/Warehouse.tscn"),
-	Buildings.Ids.Tent: preload("res://theLudovyc/Building/Residential.tscn"),
-	Buildings.Ids.Lumberjack: preload("res://theLudovyc/Building/Lumberjack.tscn")
-}
-
 const Trees_Destroy_Cost = 1
 
 # if not null follow the cursor
@@ -37,42 +33,55 @@ var population := 0:
 		event_bus.population_updated.emit(value)
 		event_bus.available_workers_updated.emit(population - the_factory.workers)
 
-var warehouse: Building2D
-
 var current_selected_building: Building2D = null
 
 
 # Called when the node enters the scene tree for the first time.
 func _ready():
 	tm.create_island("res://theLudovyc/singularity_40.json")
-
-	# spawn the warehouse
-	warehouse = instantiate_building(Buildings.Ids.Warehouse)
-
-	var warehouse_center_tile = Vector2i(1, 20)
-
-	warehouse.position = tm.ground_layer.map_to_local(warehouse_center_tile)
-
-	tm.build_entityStatic(warehouse, warehouse_center_tile)
-
-	warehouse.build()
-
+	
 	# set camera limits
 	var pos_limits = tm.get_pos_limits()
 
 	cam.pos_limit_top_left = pos_limits[0]
 	cam.pos_limit_bot_right = pos_limits[1]
+	
+	var warehouse_pos = Vector2.ZERO
+	
+	if SaveHelper.save_file_name_to_load.is_empty():
+		the_builder.build_warehouse(Vector2(704, 320))
+
+		# add some initial resources
+		the_bank.money = 100
 
+		the_storage.add_resource(Resources.Types.Wood, 2)
+		the_storage.add_resource(Resources.Types.Textile, 16)
+	
+	elif SaveHelper.load_saved_file_name() == OK:
+		if SaveHelper.last_loaded_data.is_empty():
+			return
+			
+		var game_data:Dictionary = SaveHelper.last_loaded_data.get("Game", {})
+		
+		if game_data.is_empty():
+			return
+			
+		population = game_data["population"]
+		
+		the_storage.load_storage_save()
+		the_bank.load_bank_save()
+		the_factory.load_factory_save()
+		the_market.load_market_save()
+		the_builder.load_buildings_save()
+	else:
+		# save cannot be loaded
+		# TODO show popup and return to main menu
+		return
+	
 	# force camera initial pos on warehouse
-	cam.position = warehouse.global_position
+	cam.position = the_builder.warehouse.global_position
 	cam.reset_smoothing()
 
-	# add some initial resources
-	the_bank.money = 100
-
-	the_storage.add_resource(Resources.Types.Wood, 2)
-	the_storage.add_resource(Resources.Types.Textile, 16)
-
 	pass  # Replace with function body.
 
 
@@ -200,20 +209,8 @@ func _process(delta):
 			cursor_entity = null
 
 
-func instantiate_building(building_id: Buildings.Ids) -> Building2D:
-	var instance = Buildings_Scenes[building_id].instantiate() as Building2D
-
-	node_entities.add_child(instance)
-
-	# TODO
-	#instance.selected.connect(_on_building_selected)
-
-	return instance
-
-
 func _on_EventBus_ask_create_building(building_id: Buildings.Ids):
-	var entity := instantiate_building(building_id)
-	cursor_entity = entity
+	cursor_entity = the_builder.instantiate_building(building_id)
 	cursor_entity_wait_release = true
 	cursor_entity.modulate = Color(Color.RED, 0.6)
 
@@ -229,9 +226,9 @@ func _on_EventBus_ask_deselect_building():
 
 
 func _on_EventBus_ask_select_warehouse():
-	current_selected_building = warehouse
+	current_selected_building = the_builder.warehouse
 
-	warehouse.select()
+	the_builder.warehouse.select()
 
 
 func _on_EventBus_ask_demolish_current_building():
@@ -260,3 +257,16 @@ func _on_EventBus_ask_demolish_current_building():
 	current_selected_building = null
 
 	event_bus.send_current_building_demolished.emit()
+
+func _on_PauseMenu_ask_to_save() -> void:
+	var dicoToSave := {
+		"Game": {"population":population}
+	}
+	
+	dicoToSave.merge(the_storage.get_storage_save())
+	dicoToSave.merge(the_bank.get_bank_save())
+	dicoToSave.merge(the_factory.get_factory_save())
+	dicoToSave.merge(the_market.get_market_save())
+	dicoToSave.merge(the_builder.get_buildings_save())
+	
+	pause_menu.save_this_please(dicoToSave)
diff --git a/theLudovyc/Game2D.tscn b/theLudovyc/Game2D.tscn
index b5291613..bb130f43 100644
--- a/theLudovyc/Game2D.tscn
+++ b/theLudovyc/Game2D.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=17 format=3 uid="uid://bbbuj3ne5rupv"]
+[gd_scene load_steps=18 format=3 uid="uid://bbbuj3ne5rupv"]
 
 [ext_resource type="Script" path="res://theLudovyc/Game2D.gd" id="1_i3wk0"]
 [ext_resource type="Script" path="res://theLudovyc/EventBus.gd" id="2_jbfdl"]
@@ -11,6 +11,7 @@
 [ext_resource type="Script" path="res://theLudovyc/Camera2D.gd" id="5_7hgfn"]
 [ext_resource type="PackedScene" uid="uid://b3s7eqy0blp6g" path="res://theLudovyc/GUI/GUI.tscn" id="6_lovin"]
 [ext_resource type="Script" path="res://theLudovyc/TheTicker.gd" id="7_41bva"]
+[ext_resource type="Script" path="res://Script/TheBuilder.gd" id="7_gnc51"]
 [ext_resource type="TileSet" uid="uid://bhin7dsw4tvvl" path="res://theLudovyc/new_tile_set.tres" id="11_gqnmu"]
 [ext_resource type="TileSet" uid="uid://dprvpcto8mhgv" path="res://theLudovyc/tile_set_trees.tres" id="12_25naw"]
 [ext_resource type="Script" path="res://Script/World/GroundLayer.gd" id="12_dmqkb"]
@@ -35,6 +36,9 @@ script = ExtResource("3_6uk0m")
 [node name="TheMarket" type="Node" parent="."]
 script = ExtResource("4_gvgis")
 
+[node name="TheBuilder" type="Node" parent="."]
+script = ExtResource("7_gnc51")
+
 [node name="TheTicker" type="Timer" parent="."]
 wait_time = 2.0
 autostart = true
@@ -70,7 +74,7 @@ y_sort_enabled = true
 tile_set = ExtResource("12_25naw")
 script = ExtResource("14_wtd65")
 
-[node name="Entities" type="Node2D" parent="ZSorter"]
+[node name="Buildings" type="Node2D" parent="ZSorter"]
 unique_name_in_owner = true
 z_index = 1
 y_sort_enabled = true
@@ -100,3 +104,4 @@ unique_name_in_owner = true
 [connection signal="cycle" from="TheTicker" to="TheMarket" method="_on_TheTicker_cycle"]
 [connection signal="tick" from="TheTicker" to="TheFactory" method="_on_TheTicker_tick"]
 [connection signal="timeout" from="TheTicker" to="TheTicker" method="_on_timeout"]
+[connection signal="ask_to_save" from="GUI/PauseMenu" to="." method="_on_PauseMenu_ask_to_save"]
diff --git a/theLudovyc/TheBank.gd b/theLudovyc/TheBank.gd
index 1da2df8b..e1874114 100644
--- a/theLudovyc/TheBank.gd
+++ b/theLudovyc/TheBank.gd
@@ -81,3 +81,20 @@ func recalculate_orders_cost():
 		tmp_orders_cost += resource_cost * order.sell_amount
 
 	orders_cost = tmp_orders_cost
+
+func get_bank_save() -> Dictionary:
+	return {"Money": [money, money_production_rate]}
+	
+func load_bank_save() -> Error:
+	if SaveHelper.last_loaded_data.is_empty():
+		return FAILED
+		
+	var bank_data:Array = SaveHelper.last_loaded_data.get("Money", [])
+	
+	if bank_data.is_empty():
+		return FAILED
+	
+	money = bank_data[0]
+	money_production_rate = bank_data[1]
+	
+	return OK
diff --git a/theLudovyc/TheFactory.gd b/theLudovyc/TheFactory.gd
index ed039513..5a8b0346 100644
--- a/theLudovyc/TheFactory.gd
+++ b/theLudovyc/TheFactory.gd
@@ -6,7 +6,7 @@ class_name TheFactory
 @onready var event_bus = $"../EventBus"
 
 enum Production_Line { current_workers, production_rate, current_ticks }
-var production_lines = {}
+var production_lines := {}
 
 var workers := 0:
 	set(value):
@@ -14,7 +14,7 @@ var workers := 0:
 		event_bus.available_workers_updated.emit(game.population - workers)
 
 enum Waiting_Lines { resource_type, needed_workers }
-var waiting_lines = []
+var waiting_lines := []
 
 
 func get_production_rate_per_tick(resource_type: Resources.Types) -> int:
@@ -158,3 +158,33 @@ func _on_TheTicker_tick():
 			line[Production_Line.current_ticks] = 0
 
 			storage.add_resource(resource_type, line[Production_Line.production_rate])
+
+func get_factory_save() -> Dictionary:
+	return {"Factory":[workers, production_lines, waiting_lines]}
+	
+func load_factory_save() -> Error:
+	if SaveHelper.last_loaded_data.is_empty():
+		return FAILED
+		
+	var factory_data:Array = SaveHelper.last_loaded_data.get("Factory", [])
+	
+	if factory_data.is_empty():
+		return FAILED
+		
+	workers = factory_data[0]
+	
+	waiting_lines = factory_data[2]
+	
+	for line:String in factory_data[1]:
+		var resource_type:int = line.to_int()
+		
+		if not Resources.Types.values().has(resource_type):
+			push_error("Cannot create a production line from an unknow resource type: " + line)
+			
+			continue
+		
+		production_lines[resource_type] = factory_data[1][line]
+		
+		storage.update_global_production_rate(resource_type)
+		
+	return OK
diff --git a/theLudovyc/TheMarket.gd b/theLudovyc/TheMarket.gd
index 0311ba23..77c2c156 100644
--- a/theLudovyc/TheMarket.gd
+++ b/theLudovyc/TheMarket.gd
@@ -9,8 +9,14 @@ class Order:
 	var buy_amount := 0
 	var sell_amount := 0
 
+	func _to_json() -> Array:
+		return [buy_amount, sell_amount]
+		
+	func _from_json(data:Array):
+		buy_amount = data[0]
+		sell_amount = data[1]
 
-var orders = {}
+var orders := {}
 
 
 func _ready():
@@ -99,3 +105,46 @@ func _on_TheTicker_cycle():
 
 		if the_storage.try_to_sell_resource(order_key, order.sell_amount):
 			the_bank.conclude_sale(order_key, order.sell_amount)
+			
+func get_market_save() -> Dictionary:
+	var data_to_save := {}
+	
+	for resource_type in orders:
+		var order = orders[resource_type]
+		
+		data_to_save[resource_type] = order._to_json()
+	
+	return {"Market": data_to_save}
+	
+func load_market_save() -> Error:
+	if SaveHelper.last_loaded_data.is_empty():
+		return FAILED
+		
+	var market_data:Dictionary = SaveHelper.last_loaded_data.get("Market", {})
+	
+	if market_data.is_empty():
+		return FAILED
+	
+	for resource_type_str in market_data:
+		var resource_type:int = resource_type_str.to_int()
+	
+		if not Resources.Types.values().has(resource_type):
+			push_error("Cannot create a production line \
+				from an unknow resource type: " + resource_type_str)
+			
+			continue
+			
+		var order = Order.new()
+		order._from_json(market_data[resource_type_str])
+		
+		orders[resource_type] = order
+			
+		if event_bus != null:
+			event_bus.send_create_new_order_with_values.emit(
+				resource_type, order.buy_amount, order.sell_amount)
+			
+		the_storage.update_global_production_rate(resource_type)
+	
+	the_bank.recalculate_orders_cost()
+	
+	return OK
diff --git a/theLudovyc/TheStorage.gd b/theLudovyc/TheStorage.gd
index c4845ebd..6522576c 100644
--- a/theLudovyc/TheStorage.gd
+++ b/theLudovyc/TheStorage.gd
@@ -1,7 +1,7 @@
 extends Node
 class_name TheStorage
 
-var storage = {}
+var storage := {}
 
 @onready var event_bus = $"../EventBus"
 
@@ -91,3 +91,20 @@ func recover_building_construction(building_id: Buildings.Ids):
 
 	for cost in building_cost:
 		add_resource(cost[0], cost[1])
+
+func get_storage_save() -> Dictionary:
+	return {"Storage":storage}
+	
+func load_storage_save() -> Error:
+	if SaveHelper.last_loaded_data.is_empty():
+		return FAILED
+		
+	var storage_data:Dictionary = SaveHelper.last_loaded_data.get("Storage", {})
+	
+	if storage_data.is_empty():
+		return FAILED
+	
+	for resource_type_str:String in storage_data:
+		add_resource(resource_type_str.to_int(), storage_data[resource_type_str])
+	
+	return OK
diff --git a/theLudovyc/TileMap.gd b/theLudovyc/TileMap.gd
index 78820305..b5307ff9 100644
--- a/theLudovyc/TileMap.gd
+++ b/theLudovyc/TileMap.gd
@@ -66,6 +66,9 @@ func build_entityStatic(entity:EntityStatic, tile_center:Vector2i):
 				trees_layer.erase_cell(tile_coord)
 			
 			minimap_set_cell_vec(tile_coord, Minimap_Cell_Type.Building)
+			
+func conclude_building_construction(building:Building2D):
+	build_entityStatic(building, ground_layer.local_to_map(building.position))
 
 func demolish_building(building:Building2D):
 	var top_left_tile = entityStatic_get_top_left_tile(building,
@@ -138,7 +141,3 @@ func get_pos_limits() -> PackedVector2Array:
 
 func local_to_map_to_local(position:Vector2) -> Vector2:
 	return map_to_local(local_to_map(position))
-
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-func _process(delta):
-	pass