add new transaction and add splash screen

core/scene_manager/scene_config.gd

@@ -1,6 +1,6 @@
 class_name SceneConfig
 extends Resource
 
-enum SceneName { MAIN_MENU, GAME }
+enum SceneName { MAIN_MENU, GAME, SPLASH_SCREEN }
 
 @export var scenes: Dictionary[SceneName, PackedScene]

core/scene_manager/scene_config.tres

@@ -3,11 +3,13 @@
 [ext_resource type="PackedScene" uid="uid://btcpge7cj2041" path="res://core/main_menu/main_menu.tscn" id="1_72aup"]
 [ext_resource type="Script" uid="uid://bbgyhmb8a17i7" path="res://core/scene_manager/scene_config.gd" id="1_km45g"]
 [ext_resource type="PackedScene" uid="uid://vjf4bdxd8saj" path="res://tgcc/main_scene.tscn" id="2_prsyo"]
+[ext_resource type="PackedScene" uid="uid://ri5kxx4mipo" path="res://core/splash_screen/splash_screen.tscn" id="3_aasbo"]
 
 [resource]
 script = ExtResource("1_km45g")
 scenes = Dictionary[int, PackedScene]({
 0: ExtResource("1_72aup"),
-1: ExtResource("2_prsyo")
+1: ExtResource("2_prsyo"),
+2: ExtResource("3_aasbo")
 })
 metadata/_custom_type_script = "uid://bbgyhmb8a17i7"

core/scene_manager/scene_manager.gd

@@ -4,41 +4,85 @@ extends CanvasLayer
 @onready var color_rect = $ColorRect
 @onready var loading_screen = $LoadingScreen
 @export var transition_duration: float = 1
-
+const SHADER_PATH := "res://core/transition.gdshader"
 
 func _ready() -> void:
-	color_rect.color.a = 0.0
-	color_rect.mouse_filter = Control.MOUSE_FILTER_IGNORE
-	loading_screen.hide()
+	_build_material()
+	_update_resolution()
+	get_viewport().size_changed.connect(_update_resolution)
+	_set_factor(0.0)
+	color_rect.visible = false
 
-func change_scene(scene_enum: SceneConfig.SceneName) -> void:
+func _build_material() -> void:
+	var mat := ShaderMaterial.new()
+	mat.shader = load(SHADER_PATH)
+
+	#directional gradient: botto-left-> black; top-right -> white
+	var g := Gradient.new()
+	g.set_color(0, Color.BLACK)
+	g.set_color(1, Color.WHITE)
+	var grad_tex := GradientTexture2D.new()
+	grad_tex.gradient = g
+	grad_tex.fill = GradientTexture2D.FILL_LINEAR
+	grad_tex.fill_from = Vector2(0.0, 1.0)   # bottom-left
+	grad_tex.fill_to   = Vector2(1.0, 0.0)   # top-right
+	grad_tex.width = 256
+	grad_tex.height = 256
+
+	#shape: sphere (white at the center, black around)
+	var sg := Gradient.new()
+	sg.set_color(0, Color.WHITE)
+	sg.set_color(1, Color.BLACK)
+	var shape_tex := GradientTexture2D.new()
+	shape_tex.gradient = sg
+	shape_tex.fill = GradientTexture2D.FILL_RADIAL
+	shape_tex.fill_from = Vector2(0.5, 0.5)  # center
+	shape_tex.fill_to   = Vector2(0.5, 0.0)  # ray
+	shape_tex.width = 64
+	shape_tex.height = 64
+
+	mat.set_shader_parameter("base_color", Color.BLACK)
+	mat.set_shader_parameter("gradient_texture", grad_tex)
+	mat.set_shader_parameter("gradient_fixed", false)
+	mat.set_shader_parameter("shape_texture", shape_tex)
+	mat.set_shader_parameter("shape_tiling", 16.0)
+	mat.set_shader_parameter("shape_rotation", 0.0)
+	mat.set_shader_parameter("shape_scroll", Vector2.ZERO)
+	mat.set_shader_parameter("shape_feathering", 0.0)
+	mat.set_shader_parameter("shape_treshold", 1.15)  # >1 = full at the end of the transation
+	mat.set_shader_parameter("width", 0.5)
+
+	color_rect.material = mat
+
+func _update_resolution() -> void:
+	var s := get_viewport().get_visible_rect().size
+	color_rect.material.set_shader_parameter("node_resolution", s)
+
+func _set_factor(v: float) -> void:
+	color_rect.material.set_shader_parameter("factor", v)
+
+func cover(duration := 0.5) -> void:
+	color_rect.visible = true
+	var t := create_tween()
+	t.tween_method(_set_factor, 0.0, 1.0, duration)
+	await t.finished
+
+func reveal(duration := 0.5) -> void:
+	var t := create_tween()
+	t.tween_method(_set_factor, 1.0, 0.0, duration)
+	await t.finished
+	color_rect.visible = false
+
+func change_scene(scene_enum: SceneConfig.SceneName) -> void:	
 	if not config or not config.scenes.has(scene_enum):
 		return
 
 	var target_scene: PackedScene = config.scenes[scene_enum]
 
 	color_rect.mouse_filter = Control.MOUSE_FILTER_STOP
-	
-	var tween_in = create_tween()
-	tween_in.tween_property(color_rect, "color:a", 1.0, transition_duration)
-	await tween_in.finished
-
-	loading_screen.show()
-	await get_tree().process_frame 
 
+	await cover(transition_duration)
 	get_tree().change_scene_to_packed(target_scene)
-
-	loading_screen.hide()
-
-	var tween_out = create_tween()
-	tween_out.tween_property(color_rect, "color:a", 0.0, transition_duration)
-	await tween_out.finished
+	await reveal(transition_duration)
 
 	color_rect.mouse_filter = Control.MOUSE_FILTER_IGNORE
-
-func quit_game() -> void:
-	color_rect.mouse_filter = Control.MOUSE_FILTER_STOP
-	var tween = create_tween()
-	tween.tween_property(color_rect, "color:a", 1.0, transition_duration)
-	await tween.finished
-	get_tree().quit()