bet input now only permits numbers

number_input.gd

@@ -0,0 +1,17 @@
+class_name NumberEdit
+extends LineEdit
+
+## Only allows numeric input, discards everything else.
+
+var _regex: RegEx = RegEx.new()
+@export var submit_button: Button
+
+func _ready() -> void:
+	_regex.compile("[^\\d]")
+	submit_button.disabled = true
+
+func _on_text_changed(new_text: String) -> void:
+	if new_text.is_empty() or _regex.search(new_text):
+		submit_button.disabled = true
+	else:
+		submit_button.disabled = false