Implement setting notes behaviour for ScoreArray.

rhythm_game/note/score/score_array.gd

@@ -1,10 +1,21 @@
 class_name ScoreArray extends Node
 
+## The note array this score refers to.
+## WARNING: Changing the note data clears all scores.
 var notes: NoteArray: set = _set_notes
 
+## Set a score for the note at [param index] in [member notes].
+## [param offset] is how off the note hit was in seconds.
+func set_score(index: int, offset: float) -> void:
+	_scores.set(index, offset)
+
 
 # ======== IMPLEMENTATION ======== #
-var scores: Array[Note.SCORE]
+var _scores: Array[float]
 
 func _set_notes(p_notes: NoteArray) -> void:
+	if notes == p_notes:
+		return
 	notes = p_notes
+	_scores.clear()
+	_scores.resize(notes.size())