Add loading screen between main menu and overworld

game/ui/loading_screen/loading_screen.gd

@@ -0,0 +1,73 @@
+extends CanvasLayer
+
+@onready var transition_rect : ColorRect   = $TransitionRect
+@onready var status_label : Label          = %StatusLabel
+@onready var progress_bar : ProgressBar    = %ProgressBar
+
+const FADE_DURATION := 0.6
+const MIN_DISPLAY_TIME := 0.4   # évite le flash sur les chargements instantanés
+
+func _ready() -> void:
+	transition_rect.visible = false
+	process_mode = Node.PROCESS_MODE_ALWAYS
+
+func change_scene(scene_path : String, message : String = "Chargement...") -> void:
+	var start_ms := Time.get_ticks_msec()
+
+	# --- 1. Afficher l'écran de chargement (fade in) ---
+	status_label.text = message
+	progress_bar.value = 0
+	transition_rect.modulate.a = 0.0
+	transition_rect.visible = true
+
+	var fade_in := create_tween()
+	fade_in.tween_property(transition_rect, "modulate:a", 1.0, FADE_DURATION)
+	await fade_in.finished
+
+	# --- 2. Lancer le chargement en arrière-plan ---
+	var err := ResourceLoader.load_threaded_request(scene_path)
+	if err != OK:
+		push_error("Échec du lancement du chargement : %s (err %d)" % [scene_path, err])
+		await _fade_out()
+		return
+
+	# --- 3. Boucle jusqu'à ce que la scène soit prête ---
+	var prog : Array = []
+	while true:
+		var status := ResourceLoader.load_threaded_get_status(scene_path, prog)
+		match status:
+			ResourceLoader.THREAD_LOAD_IN_PROGRESS:
+				if prog.size() > 0:
+					progress_bar.value = prog[0] * 100.0
+				await get_tree().process_frame
+			ResourceLoader.THREAD_LOAD_LOADED:
+				break
+			_:
+				push_error("Échec du chargement de %s" % scene_path)
+				await _fade_out()
+				return
+
+	var packed : PackedScene = ResourceLoader.load_threaded_get(scene_path)
+	if packed == null:
+		push_error("PackedScene nulle pour %s" % scene_path)
+		await _fade_out()
+		return
+
+	# --- 4. Durée minimale visible (anti-flash) ---
+	var elapsed := (Time.get_ticks_msec() - start_ms) / 1000.0
+	if elapsed < MIN_DISPLAY_TIME:
+		await get_tree().create_timer(MIN_DISPLAY_TIME - elapsed).timeout
+
+	# --- 5. Changer de scène ---
+	get_tree().change_scene_to_packed(packed)
+
+	# --- 6. Laisser la nouvelle scène s'initialiser, puis fade out ---
+	await get_tree().process_frame
+	await get_tree().process_frame
+	await _fade_out()
+
+func _fade_out() -> void:
+	var tween := create_tween()
+	tween.tween_property(transition_rect, "modulate:a", 0.0, FADE_DURATION)
+	await tween.finished
+	transition_rect.visible = false

game/ui/loading_screen/loading_screen.gd.uid

@@ -0,0 +1 @@
+uid://nl7jg02c6wwm

game/ui/loading_screen/loading_screen.tscn

@@ -0,0 +1,42 @@
+[gd_scene format=3 uid="uid://ckyjxhrfhaqlc"]
+
+[ext_resource type="Script" uid="uid://nl7jg02c6wwm" path="res://game/ui/loading_screen/loading_screen.gd" id="1_v6dnv"]
+
+[node name="LoadingScreen" type="CanvasLayer" unique_id=255554158]
+layer = 128
+script = ExtResource("1_v6dnv")
+
+[node name="TransitionRect" type="ColorRect" parent="." unique_id=2119321044]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+color = Color(0, 0, 0, 1)
+
+[node name="MarginContainer" type="MarginContainer" parent="TransitionRect" unique_id=1396198220]
+layout_mode = 1
+anchors_preset = 3
+anchor_left = 1.0
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = -1152.0
+offset_top = -54.0
+grow_horizontal = 0
+grow_vertical = 0
+theme_override_constants/margin_right = 15
+theme_override_constants/margin_bottom = 15
+
+[node name="VBoxContainer" type="VBoxContainer" parent="TransitionRect/MarginContainer" unique_id=550870747]
+layout_mode = 2
+size_flags_horizontal = 8
+size_flags_vertical = 8
+
+[node name="StatusLabel" type="Label" parent="TransitionRect/MarginContainer/VBoxContainer" unique_id=782325402]
+unique_name_in_owner = true
+layout_mode = 2
+
+[node name="ProgressBar" type="ProgressBar" parent="TransitionRect/MarginContainer/VBoxContainer" unique_id=1836299440]
+unique_name_in_owner = true
+layout_mode = 2

game/ui/main_menu/main_menu.gd

@@ -4,7 +4,6 @@ extends Node
 @onready var Quit: Button = %Quit
 @onready var background: TextureRect = %Background
 @onready var music_player: AudioStreamPlayer = %MusicPlayer
-@onready var transition_rect: ColorRect = %TransitionRect
 @onready var version_label: Label = %VersionLabel
 @onready var game_infos: Control = %GameInfos
 
@@ -14,7 +13,6 @@ extends Node
 
 const GAME_SCENE_PATH := "res://game/world/main.tscn"
 const MUSIC_FADE_DURATION := 0.8
-const SCREEN_FADE_DURATION := 0.6
 
 var is_transitioning : bool = false
 
@@ -57,23 +55,15 @@ func _on_start_pressed() -> void:
 	if is_transitioning: return
 	is_transitioning = true
 	play_click_sound()
-	start_transition_to(GAME_SCENE_PATH)
+	LoadingScreen.change_scene(GAME_SCENE_PATH, "Préparation de l'aventure...")
 
 func play_click_sound() -> void:
 	UiAudio.play(start_click_sound)
 
+func fade_out_music() -> void:
+	if !music_player.playing: return
+	var tween := create_tween()
+	tween.tween_property(music_player, "volume_db", -80.0, MUSIC_FADE_DURATION)
+	
 func _on_quit_pressed() -> void:
 	get_tree().quit()
-
-func start_transition_to(scene_path : String) -> void:
-	if music_player.playing:
-		var music_tween := create_tween()
-		music_tween.tween_property(music_player, "volume_db", -80.0, MUSIC_FADE_DURATION)
-
-	transition_rect.visible = true
-	transition_rect.modulate.a = 0.0
-	var screen_tween := create_tween()
-	screen_tween.tween_property(transition_rect, "modulate:a", 1.0, SCREEN_FADE_DURATION)
-	await screen_tween.finished
-
-	get_tree().change_scene_to_file(scene_path)

game/ui/main_menu/main_menu.tscn

@@ -167,16 +167,5 @@ grow_vertical = 0
 [node name="MusicPlayer" type="AudioStreamPlayer" parent="." unique_id=1279071971]
 unique_name_in_owner = true
 
-[node name="TransitionRect" type="ColorRect" parent="." unique_id=389028330]
-unique_name_in_owner = true
-modulate = Color(1, 1, 1, 0)
-layout_mode = 1
-anchors_preset = 15
-anchor_right = 1.0
-anchor_bottom = 1.0
-grow_horizontal = 2
-grow_vertical = 2
-color = Color(0, 0, 0, 1)
-
 [connection signal="pressed" from="GameInfos/Buttons/VBoxContainer/StartContainer/HBoxContainer/Start" to="." method="_on_start_pressed"]
 [connection signal="pressed" from="GameInfos/Buttons/VBoxContainer/QuitContainer/HBoxContainer/Quit" to="." method="_on_quit_pressed"]

project.godot

@@ -26,6 +26,7 @@ buses/default_bus_layout="res://game/core/default_bus_layout.tres"
 ControllerIcons="*uid://b7ho1rjcpht1d"
 GameData="*uid://d4beiel88cwc7"
 UiAudio="*uid://7e7fe2xk3aue"
+LoadingScreen="*uid://ckyjxhrfhaqlc"
 Pokedex="*uid://dijnkrewbwgmx"
 MountRegistry="*uid://u4gskwbwm0b0"
 DebugPokemonPanel="*uid://b3058rssf6ud5"