End of Chapter 3. Loading scene and new game button working!

scripts/ui/loading_screen.gd

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+extends Control
+
+@export var loadingBar: TextureProgressBar
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	Loader.LOADING_PROGRESS_UPDATED.connect(_on_progress_updated)
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	pass
+
+
+func _on_progress_updated(percentage: float) -> void:
+	loadingBar.value = percentage

scripts/ui/loading_screen.gd.uid

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+uid://d1ag1ag2bbhtx