diff options
Diffstat (limited to 'lib/utils')
| -rw-r--r-- | lib/utils/esense_input.dart | 20 | ||||
| -rw-r--r-- | lib/utils/simfile.dart | 23 |
2 files changed, 36 insertions, 7 deletions
diff --git a/lib/utils/esense_input.dart b/lib/utils/esense_input.dart index b738664..14cf7de 100644 --- a/lib/utils/esense_input.dart +++ b/lib/utils/esense_input.dart @@ -8,9 +8,12 @@ import 'package:sense_the_rhythm/models/arrow_direction.dart'; import 'package:sense_the_rhythm/models/input_direction.dart'; class ESenseInput { + // create singleton that is available on all widgets so it does not have to be + // carried down in the widget tree static final instance = ESenseInput._(); ESenseManager eSenseManager = ESenseManager('unknown'); + // valuenotifier allows widgets to rerender when the value changes ValueNotifier<String> deviceStatus = ValueNotifier('Disconnected'); StreamSubscription? subscription; @@ -29,8 +32,11 @@ class ESenseInput { _listenToESense(); } + /// ask and check if permissions are enabled and granted Future<bool> _askForPermissions() async { + // is desktop if (!Platform.isAndroid && !Platform.isIOS) return false; + // is bluetooth even enabled? if (!await Permission.bluetooth.serviceStatus.isEnabled) { deviceStatus.value = "Bluetooth is disabled!"; return false; @@ -55,6 +61,7 @@ class ESenseInput { return true; } + /// listen to connectionEvents and set deviceStatus void _listenToESense() { // if you want to get the connection events when connecting, // set up the listener BEFORE connecting... @@ -89,12 +96,14 @@ class ESenseInput { }); } + /// get eSenseEvent stream only containung button events Stream<ButtonEventChanged> buttonEvents() { return eSenseManager.eSenseEvents .where((event) => event.runtimeType == ButtonEventChanged) .cast(); } + /// sets sampling rate and listens to sensorEvents void _startListenToSensorEvents() async { // // any changes to the sampling frequency must be done BEFORE listening to sensor events print('setting sampling frequency...'); @@ -115,11 +124,14 @@ class ESenseInput { sampling = true; } + /// cancels the sensorEvents listening void _pauseListenToSensorEvents() async { subscription?.cancel(); sampling = false; } + /// add up all new gyro [data] in the form of deg/s multiplied by scaling factor + /// to get real angles void _parseGyroData(List<int> data) { // Float value in deg/s = Gyro value / Gyro scale factor // The default configuration is +- 500deg/s for the gyroscope. @@ -131,6 +143,7 @@ class ESenseInput { // print('${z.toDouble() / 500.0 * (1.0 / 10.0)}'); } + /// nulls all angles and reset inputDirection void resetAngles() { inputDirection.reset(); x = 0; @@ -138,26 +151,29 @@ class ESenseInput { z = 0; } + /// get InputDirection by checking if angels are in defined ranges and + /// calibrating based on the [expect]ed direction from ArrowDirection InputDirection getInputDirection(ArrowDirection expect) { + // check if angle is in range inputDirection.up = z > 180 && z < 340; inputDirection.down = z > 20 && z < 180; inputDirection.left = y > 0 && y < 180; inputDirection.right = y > 180 && y < 360; + // calibrate based on expected directoin from ArrowDirection if (expect == ArrowDirection.up && inputDirection.up || expect == ArrowDirection.down && inputDirection.down) { y = 0; - print("ehit"); } if (expect == ArrowDirection.left && inputDirection.left || expect == ArrowDirection.right && inputDirection.right) { z = 0; - print("ehit"); } return inputDirection; } + /// connect to ESense with [deviceName] by first asking for permissions Future<void> connectToESense(String deviceName) async { if (!connected) { bool permissionSuccessfull = await _askForPermissions(); diff --git a/lib/utils/simfile.dart b/lib/utils/simfile.dart index c528084..71613a9 100644 --- a/lib/utils/simfile.dart +++ b/lib/utils/simfile.dart @@ -55,6 +55,7 @@ class Simfile { Simfile(this.simfilePath); + /// parses a chart tag with metadata [keys] and note data [value] void _parseChart({required List<String> keys, required String value}) { Chart chart = Chart(); chart.chartType = keys[1]; @@ -63,6 +64,7 @@ class Simfile { chart.numericalMeter = int.parse(keys[4]); chart.radarValues = keys[5]; + // find simplest chart if (chartSimplest == null || (chart.difficulty!.index <= chartSimplest!.difficulty!.index && chart.numericalMeter! <= chartSimplest!.numericalMeter!)) { @@ -78,8 +80,10 @@ class Simfile { measures.add(measure); } + // for now only use the first bpm value double bpm = bpms.entries.first.value; + // calculate timing for all notes based on offset, bpm and measure for (final (measureIndex, measure) in measures.indexed) { for (final (noteIndex, noteData) in measure.indexed) { double beat = measureIndex * 4.0 + @@ -95,10 +99,13 @@ class Simfile { } } + /// parse a tag based on a regex match [fieldData] and parsing the value based + /// on the key void _parseTag(RegExpMatch fieldData) { List<String> keys = fieldData[1]!.split(':').map((key) => key.trim()).toList(); String value = fieldData[2]!; + if (keys[0] == "BPMS") { for (final pairRaw in value.split(',')) { List<String> pair = pairRaw.split('='); @@ -122,14 +129,18 @@ class Simfile { _parseChart(keys: keys, value: value); } + /// load the simfile Future<bool> load() async { directoryPath = File(simfilePath).parent.path; lines = File(simfilePath).readAsStringSync(); + // remove comments RegExp commentsRegExp = RegExp(r'//.*$'); lines = lines?.replaceAll(commentsRegExp, ''); + // find all tags RegExp fieldDataRegExp = RegExp(r'#([^;]+):([^;]*);'); + // parse all tags for (final fieldData in fieldDataRegExp.allMatches(lines!)) { try { _parseTag(fieldData); @@ -138,11 +149,8 @@ class Simfile { } } - String? musicFileName = tags["MUSIC"]; - if (musicFileName == null) return false; - String? bannerFileName = tags["BANNER"]; - if (bannerFileName == null) return false; - + // searching for audio and banned in the directory is more robust than using + // values from metadata as they are wrong more often for (FileSystemEntity entity in Directory(directoryPath!).listSync()) { if (entity.path.endsWith('.ogg')) { audioPath = entity.path; @@ -152,6 +160,11 @@ class Simfile { } } + // dont use this simfile of files are missing + if (audioPath == null) return false; + if (bannerPath == null) return false; + + // get duration from audio AudioPlayer audioplayer = AudioPlayer(); await audioplayer.setSource(DeviceFileSource(audioPath!)); duration = await audioplayer.getDuration(); |