add a fade thing

game.gd

@@ -11,6 +11,9 @@ var current_registry
 onready var music_player = get_node("music_player")
 onready var sfx_player = get_node("sfx_player")
 
+# transition node
+onready var transition = get_node("trans_layer/transition")
+
 signal on_music_volume_changed(new_value)
 signal on_sfx_volume_changed(new_value)
 signal on_reading_speed_changed(new_value)
@@ -58,6 +61,8 @@ func _register_functions():
 func _switch_scene_fnc(args):
 	if args.size() == 1:
 		var scene_name = args[0]
+		transition.start_transition()
+		yield(transition, "on_transition_completed")
 		SceneSwitcher.goto_scene(Scenes[scene_name])
 
 func _on_game_started_set(v):

game.tscn

@@ -1,12 +1,60 @@
-[gd_scene load_steps=2 format=2]
+[gd_scene load_steps=3 format=2]
 
 [ext_resource path="res://game.gd" type="Script" id=1]
+[ext_resource path="res://transition.gd" type="Script" id=2]
 
-[node name="Game" type="Node"]
+[node name="Game" type="Node" index="0"]
 
 script = ExtResource( 1 )
 
-[node name="music_player" type="AudioStreamPlayer" parent="." index="0"]
+[node name="trans_layer" type="CanvasLayer" parent="." index="0"]
+
+layer = 2
+offset = Vector2( 0, 0 )
+rotation = 0.0
+scale = Vector2( 1, 1 )
+transform = Transform2D( 1, 0, 0, 1, 0, 0 )
+
+[node name="transition" type="Control" parent="trans_layer" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+script = ExtResource( 2 )
+_sections_unfolded = [ "Mouse" ]
+
+[node name="background" type="ColorRect" parent="trans_layer/transition" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+color = Color( 0, 0, 0, 0 )
+_sections_unfolded = [ "Mouse" ]
+
+[node name="tween" type="Tween" parent="trans_layer/transition" index="1"]
+
+repeat = false
+playback_process_mode = 1
+playback_speed = 1.0
+playback/active = false
+playback/repeat = false
+playback/speed = 1.0
+
+[node name="music_player" type="AudioStreamPlayer" parent="." index="1"]
 
 stream = null
 volume_db = 0.0
@@ -15,7 +63,7 @@ autoplay = false
 mix_target = 0
 bus = "Music"
 
-[node name="sfx_player" type="AudioStreamPlayer" parent="." index="1"]
+[node name="sfx_player" type="AudioStreamPlayer" parent="." index="2"]
 
 stream = null
 volume_db = 0.0

scenes/first_scene.tscn

@@ -4,7 +4,7 @@
 [ext_resource path="res://dialog_layer.gd" type="Script" id=2]
 [ext_resource path="res://ui/dialog_box.tscn" type="PackedScene" id=3]
 
-[node name="first_scene" type="Node2D" index="0"]
+[node name="first_scene" type="Node2D"]
 
 script = ExtResource( 1 )
 
@@ -12,7 +12,7 @@ script = ExtResource( 1 )
 
 [node name="dialog_layer" type="CanvasLayer" parent="." index="1"]
 
-layer = 1
+layer = 0
 offset = Vector2( 0, 0 )
 rotation = 0.0
 scale = Vector2( 1, 1 )

scenes/intro.tscn

@@ -12,7 +12,7 @@ script = ExtResource( 1 )
 
 [node name="dialog_layer" type="CanvasLayer" parent="." index="1"]
 
-layer = 1
+layer = 0
 offset = Vector2( 0, 0 )
 rotation = 0.0
 scale = Vector2( 1, 1 )

transition.gd

@@ -0,0 +1,31 @@
+extends Control
+
+onready var background = get_node("background")
+onready var tween = get_node("tween")
+
+signal on_transition_completed()
+
+const TRANSITION_TIME = 1.0
+
+func _ready():
+	pass
+
+func start_transition():
+	
+	tween.interpolate_property(
+		background, "color:a", background.color.a, 1.0,
+		TRANSITION_TIME, Tween.TRANS_QUAD,
+		Tween.EASE_IN_OUT
+	)
+	
+	tween.start()
+	yield(tween, "tween_completed")
+	emit_signal("on_transition_completed")
+	
+	tween.interpolate_property(
+		background, "color:a", background.color.a, 0.0,
+		TRANSITION_TIME, Tween.TRANS_QUAD,
+		Tween.EASE_IN_OUT
+	)
+	tween.start()
+	

ui/dialog_box.tscn

@@ -16,7 +16,7 @@ content_margin_right = -1.0
 content_margin_top = -1.0
 content_margin_bottom = -1.0
 
-[node name="dialog_box" type="Control" index="0"]
+[node name="dialog_box" type="Control"]
 
 anchor_left = 0.0
 anchor_top = 0.0