2 files changed, 14 insertions, 0 deletions

diff --git a/lib/screens/level.dart b/lib/screens/level.dart
index 9c5823b..a22c237 100644
--- a/lib/screens/level.dart
+++ b/lib/screens/level.dart
@@ -87,6 +87,7 @@ class _LevelState extends State<Level> with SingleTickerProviderStateMixin {
       }
     });
 
+    // go to GameOverStats when level finishes
     player.onPlayerComplete.listen((void _) {
       Route route = MaterialPageRoute(
           builder: (context) => GameOverStats(
@@ -105,6 +106,7 @@ class _LevelState extends State<Level> with SingleTickerProviderStateMixin {
       });
     }
 
+    // convert beats to notes
     widget.simfile.chartSimplest?.beats.forEach((time, noteData) {
       int arrowIndex = noteData.indexOf('1');
       if (arrowIndex < 0 || arrowIndex > 3) {
@@ -126,6 +128,7 @@ class _LevelState extends State<Level> with SingleTickerProviderStateMixin {
     super.dispose();
   }
 
+  /// toggle between pause and resume
   void _pauseResume() {
     if (_isPlaying) {
       player.pause();
@@ -140,18 +143,24 @@ class _LevelState extends State<Level> with SingleTickerProviderStateMixin {
     }
   }
 
+  /// checks if the [note] is hit on [time] with the correct InputDirection
   void _noteHitCheck(Note note, Duration time) {
     note.position = note.time - time.inMilliseconds / 60000.0;
     if (note.wasHit != null) {
       return;
     }
+
+    // you have +- half a second to hit
     if (note.position.abs() < 0.5 * 1.0 / 60.0) {
+      // combine keyboard and esense input
       InputDirection esenseDirection =
           ESenseInput.instance.getInputDirection(note.direction);
       inputDirection.up |= esenseDirection.up;
       inputDirection.down |= esenseDirection.down;
       inputDirection.left |= esenseDirection.left;
       inputDirection.right |= esenseDirection.right;
+
+      // check if input matches arrow direction
       bool keypressCorrect = false;
       switch (note.direction) {
         case ArrowDirection.up:
@@ -189,6 +198,7 @@ class _LevelState extends State<Level> with SingleTickerProviderStateMixin {
     }
   }
 
+  /// sets the InputDirection based on the arrow keys
   void _keyboardHandler(event) {
     bool isDown = false;
     if (event is KeyDownEvent) {
diff --git a/lib/screens/level_selection.dart b/lib/screens/level_selection.dart
index 7241ad7..5984e65 100644
--- a/lib/screens/level_selection.dart
+++ b/lib/screens/level_selection.dart
@@ -28,6 +28,7 @@ class _LevelSelectionState extends State<LevelSelection> {
     loadFolderPath();
   }
 
+  /// gets folder path from persistent storage and updates state with loaded simfiles
   Future<void> loadFolderPath() async {
     SharedPreferences prefs = await SharedPreferences.getInstance();
     final String? stepmaniaCoursesPathSetting =
@@ -44,6 +45,7 @@ class _LevelSelectionState extends State<LevelSelection> {
     });
   }
 
+  /// open folder selection dialog and save selected folder in persistent storage
   Future<void> selectFolder() async {
     await Permission.manageExternalStorage.request();
     String? selectedFolder = await FilePicker.platform.getDirectoryPath();
@@ -57,6 +59,7 @@ class _LevelSelectionState extends State<LevelSelection> {
     }
   }
 
+  /// load all simfiles from a [directoryPath]
   Future<List<Simfile>> listFilesAndFolders(String directoryPath) async {
     final directory = Directory(directoryPath);
     try {
@@ -86,6 +89,7 @@ class _LevelSelectionState extends State<LevelSelection> {
     }
   }
 
+  /// filter stepmaniaCoursesFolders based on [input]
   void filterLevels(String input) {
     setState(() {
       stepmaniaCoursesFoldersFiltered = stepmaniaCoursesFolders