Organize files. WIP score system.

rhythm_game/note/array/note_array.gd

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+## An array of notes, stored as arrays of data.
+## Notes are assumed to be sorted in ascending order by beat.
+class_name NoteArray extends Node
+
+## The ID of the note at [param index].
+func id_at(index: int) -> int:
+	return index
+
+## The beat of the note at [param index].
+func beat_at(index: int) -> float:
+	return _beats.get(index)
+
+## The type of the note at [param index].
+func type_at(index: int) -> Note.TYPE:
+	return _types.get(index)
+
+## The lane of the note at [param index].
+func lane_at(index: int) -> int:
+	return _lanes.get(index)
+
+## The number of notes in the array.
+func size() -> int:
+	return _beats.size()
+
+## Remove all notes in the array.
+func clear() -> void:
+	_beats = []
+	_types = []
+	_lanes = []
+
+# ======= IMPLEMENTATION ======= #
+var _beats: Array[float] = []
+var _types: Array[Note.TYPE] = []
+var _lanes: Array[int] = []
+
+func _append_note(note: Note) -> void:
+	_beats.append(note.hit_beat)
+	_types.append(note.type)
+	_lanes.append(note.lane)
+
+func _append_note_data(beat: float, type: Note.TYPE, lane: int) -> void:
+	_beats.append(beat)
+	_types.append(type)
+	_lanes.append(lane)