public void PlaySong(SongItem songItem, double specificStartTime = 0)
{
currentSongItem = songItem;
songPaused = false;
songHasStarted = true;
accumulatedPauseTime = 0;
dspPausedTime = 0;
songPosition = -1;
if (audioSource)
{
audioSource.clip = songItem.clip;
}
// songItem.ResetNotesState();
currnetNotes = songItem.GetNotes();
secPerBeat = 60f / songItem.bpm;
//Starting the audio play back
dspStartTime = AudioSettings.dspTime;
if (audioSource)
{
audioSource.PlayScheduled(AudioSettings.dspTime + delay);
audioSource.time = (float)specificStartTime;
dspStartTime -= specificStartTime;
}
trackManager.SetupForNewSong();
onSongStartPlay.Invoke();
}
public static void UpdateBpm(MidiFile rawMidi, SongItem midi)
{
if (rawMidi == null)
{
Debug.LogError("Cannot find the midi file");
return;
}
midi.notes.Clear();
if (midi.bpm <= 0)
{
return;
}
var tempoMap = TempoMap.Create(Tempo.FromBeatsPerMinute(midi.bpm));
foreach (var note in rawMidi.GetNotes())
{
midi.notes.Add(new SongItem.MidiNote()
{
noteName = ParseEnum <SongItem.NoteName>(note.NoteName.ToString()),
noteOctave = note.Octave,
time = GetMetricTimeSpanTotal(note.TimeAs <MetricTimeSpan>(tempoMap)),
noteLength = GetMetricTimeSpanTotal(note.LengthAs <MetricTimeSpan>(tempoMap))
});
}
EditorUtility.SetDirty(midi);
}
public static void UpdateNotesTime(SongItem songItem)
{
foreach (var note in songItem.notes)
{
note.time = 60f / songItem.bpm * note.beatIndex;
note.noteLength = 60f / songItem.bpm * note.beatLengthIndex;
}
}
public static void ShowWindow(SongItem item)
{
var window = GetWindow <SequenceEditor>();
window.titleContent = new GUIContent("Sequencer");
window.Show();
window.songItem = item;
}
public static LiteSongItem FindJsonFile(SongItem target)
{
var path = AssetDatabase.GetAssetPath((SongItem)target);
var selectedMidFilePath = EditorUtility.OpenFilePanelWithFilters("Import sequence from json", Directory.GetParent(path).ToString(), new string[] { "Json File", "json" });
if (string.IsNullOrEmpty(selectedMidFilePath))
{
return(null);
}
var json = File.ReadAllText(selectedMidFilePath);
if (string.IsNullOrEmpty(json))
{
Debug.LogWarning("Json file empty!");
return(null);
}
return(LiteSongItem.FromJson(json));
}
public static void UpdateBpm(MidiFile rawMidi, SongItem songItem)
{
if (rawMidi == null)
{
Debug.LogError("Cannot find the midi file");
return;
}
songItem.notes.Clear();
var detectedTempoMap = rawMidi.GetTempoMap();
var tempoMap = songItem.useCurrentBpmMidiImport ? TempoMap.Create(detectedTempoMap.TimeDivision, Tempo.FromBeatsPerMinute(songItem.bpm), detectedTempoMap.TimeSignature.AtTime(0)) : detectedTempoMap;
if (!songItem.useCurrentBpmMidiImport)
{
songItem.bpm = (int)rawMidi.GetTempoMap().Tempo.AtTime(0).BeatsPerMinute;
}
Debug.Log($"Updating Midi Data {tempoMap.TimeDivision}, {songItem.bpm}bpm");
int count = 0;
foreach (var note in rawMidi.GetNotes())
{
count++;
var beat = GetMetricTimeSpanTotal(note.TimeAs <MetricTimeSpan>(tempoMap)) * songItem.bpm / 60;
var beatLength = GetMetricTimeSpanTotal(note.LengthAs <MetricTimeSpan>(tempoMap)) * songItem.bpm / 60;
// Debug.Log(RoundToNearestBeat(beat));
songItem.notes.Add(new SongItem.MidiNote()
{
noteName = ParseEnum <SongItem.NoteName>(note.NoteName.ToString()),
noteOctave = note.Octave,
time = GetMetricTimeSpanTotal(note.TimeAs <MetricTimeSpan>(tempoMap)),
noteLength = GetMetricTimeSpanTotal(note.LengthAs <MetricTimeSpan>(tempoMap)),
//This two is for recalculating the currect time when the bpm is changed
beatIndex = SongItem.RoundToNearestBeat(beat),
beatLengthIndex = SongItem.RoundToNearestBeat(beatLength),
});
}
Debug.Log(count + " Note(s) detected from Midi file");
EditorUtility.SetDirty(songItem);
}
public void PlaySong(SongItem songItem)
{
songPaused = false;
songHasStarted = true;
accumulatedPauseTime = 0;
dspPausedTime = 0;
songPosition = -1;
audioSource.clip = songItem.clip;
songItem.ResetNotesState();
currnetNotes = songItem.notes;
secPerBeat = 60f / songItem.bpm;
//Starting the audio play back
dspStartTime = AudioSettings.dspTime;
audioSource.PlayScheduled(AudioSettings.dspTime + delay);
TrackManager.INSTANCE.SetupForNewSong();
}
public static MidiFile FindMidiFile(SongItem target)
{
var path = AssetDatabase.GetAssetPath((SongItem)target);
var selectedMidFilePath = EditorUtility.OpenFilePanelWithFilters("Import sequence from midi", Directory.GetParent(path).ToString(), new string[] { "Midi File", "mid" });
if (!string.IsNullOrEmpty(selectedMidFilePath))
{
return(MidiFile.Read(selectedMidFilePath));
}
// string filePath = path.Substring(0, path.Length - Path.GetFileName(path).Length);
// string[] files = Directory.GetFiles(filePath, "*.mid");
// if (files.Length > 0)
// {
// // string midiFileName = Path.Combine(filePath, );
// return MidiFile.Read(files[0]);
// }
return(null);
}
public override List <SongItem.MidiNote> OnGenerateSequence(SongItem songItem)
{
//Safety checks
if (!songItem || !songItem.clip)
{
Debug.LogError("Failed to generate, the clip or the songItem is null");
return(null);
}
//Seed handling
if (reseed)
{
Random.InitState(System.Environment.TickCount);
}
else
{
Random.InitState(seed);
}
//Calculating the total beat length with quantize to 0.25
var totalBeat = SongItem.RoundToNearestBeat(songItem.bpm * songItem.clip.length / 60f);
// Debug.Log(totalBeat);
var notes = new List <SongItem.MidiNote>();
///Begin handling onset notes generations
var lastBeatIndex = -1f;
if (algorithm == Algorithm.OnsetRandom)
{
if (songItem.onsetData != null && songItem.onsetData.Length > 0)
{
for (int i = 0; i < songItem.onsetData.Length; i++)
{
var onsetTime = AudioAnalysis.getTimeFromIndex(songItem.clip, i);
var beatIndex = SongItem.RoundToNearestBeat(onsetTime * songItem.bpm / 60);
//Check for close beat distance
if (lastBeatIndex == -1 || (beatIndex - lastBeatIndex) > closeBeatDistance)
{
var fallInRange = false;
if (usePercentage)
{
var onsetPrecentage = (songItem.onsetData[i] / songItem.onsetMax);
fallInRange = onsetPrecentage > onsetMinThresholdPercentage && onsetPrecentage <= onsetMaxThresholdPercentage;
}
else
{
fallInRange = songItem.onsetData[i] > onsetMinThreshold && songItem.onsetData[i] <= onsetMaxThreshold;
}
if (fallInRange)
{
if (!allowHalfStep && (beatIndex % 1) == 0.5f)
{
continue;
}
if (!allowQuarterStep && ((beatIndex % 1) == 0.25f || (beatIndex % 1) == 0.75f))
{
continue;
}
notes.Add(new SongItem.MidiNote()
{
beatIndex = beatIndex,
beatLengthIndex = 1f,
noteName = SongItem.noteNameMapping[Random.Range(0, targetTrackCount)],
noteOctave = 3,
//in seconds
time = onsetTime,
noteLength = 60f / songItem.bpm * 1f,
});
lastBeatIndex = beatIndex;
}
}
}
return(notes);
}
else
{
Debug.LogWarning("Onset data is empty, nothing generated.");
return(null);
}
}
//Begin simple random note geneation
var maxCountX = 1;
var preferredX = -1;
var previousX = -1;
//First to loop through all beat
for (float y = 0; y < totalBeat; y += 1f)
{
var currentCountX = 0;
maxCountX = 1;
//Randomize max count x
if (UnityEngine.Random.value > 0.9f)
{
maxCountX = 2;
}
else
if (UnityEngine.Random.value < 0.2f)
{
maxCountX = 0;
}
//Randomize preferred X
if (maxCountX == 1)
{
while (previousX == preferredX)
{
preferredX = UnityEngine.Random.Range(0, 4);
}
}
previousX = preferredX;
//Seconds to loop through all track
for (int x = 0; x < targetTrackCount; x++)
{
//Not our targeted track0
if (maxCountX == 1 && preferredX != x)
{
continue;
}
//We have more than on quota, try some randomness
if (maxCountX > 1)
{
//Unlucky -> skip
if (UnityEngine.Random.value > 0.5f)
{
continue;
}
}
//We have reached out quota, skip
if (currentCountX >= maxCountX)
{
continue;
}
//Going to create our note at this beat
notes.Add(new SongItem.MidiNote()
{
beatIndex = y,
beatLengthIndex = 1f,
noteName = SongItem.noteNameMapping[x],
noteOctave = 3,
//in seconds
time = 60f / songItem.bpm * y,
noteLength = 60f / songItem.bpm * 1f,
});
currentCountX++;
}
}
return(notes);
}
private void OnValidate()
{
closeBeatDistance = Mathf.Max(0, SongItem.RoundToNearestBeat(closeBeatDistance));
}
public abstract List <SongItem.MidiNote> OnGenerateSequence(SongItem songItem);
public LiteSongItem(string name, SongItem songItem)
{
this.bpm = songItem.bpm;
this.notes = songItem.notes;
}
public static void OnPostprocessAllAssets(string[] importedAssets, string[] deletedAssets, string[] movedAssets, string[] movedFromAssetPaths)
{
foreach (string asset in importedAssets)
{
if (asset.EndsWith(".mid"))
{
var detectedBpm = -1;
var bpmString = "";
foreach (var item in Path.GetFileNameWithoutExtension(asset).Split(' '))
{
if (item.ToLower().Contains("bpm"))
{
// Debug.Log(item);
// Debug.Log(Regex.Match(item, @"\d+").Value);
detectedBpm = int.Parse(Regex.Match(item, @"\d+").Value);
bpmString = item;
break;
}
}
string songName;
if (!string.IsNullOrEmpty(bpmString))
{
songName = Path.GetFileNameWithoutExtension(asset).Replace(bpmString, "").Trim();
}
else
{
songName = Path.GetFileNameWithoutExtension(asset);
}
string filePath = asset.Substring(0, asset.Length - Path.GetFileName(asset).Length);
string fileWithoutExt = filePath + songName;
string newFileName = fileWithoutExt + ".asset";
var rawMidi = MidiFile.Read(asset);
SongItem songItem = (SongItem)AssetDatabase.LoadAssetAtPath(newFileName, typeof(SongItem));
AudioClip clipFile;
clipFile = (AudioClip)AssetDatabase.LoadAssetAtPath(fileWithoutExt + ".mp3", typeof(AudioClip));
if (!clipFile)
{
clipFile = (AudioClip)AssetDatabase.LoadAssetAtPath(fileWithoutExt + ".wav", typeof(AudioClip));
}
else if (!clipFile)
{
clipFile = (AudioClip)AssetDatabase.LoadAssetAtPath(fileWithoutExt + ".ogg", typeof(AudioClip));
}
var isNew = false;
if (!songItem)
{
songItem = ScriptableObject.CreateInstance <SongItem>();
isNew = true;
}
if (songItem.bpm == 0 && detectedBpm != -1)
{
songItem.bpm = detectedBpm;
}
songItem.clip = clipFile;
SongItemEditor.UpdateBpm(rawMidi, songItem);
if (isNew)
{
Debug.Log("SongItem created for " + songName);
AssetDatabase.CreateAsset(songItem, newFileName);
}
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
}
}
}