TXT song converter.

src/main/java/com/github/hhhzzzsss/songplayer/conversion/TXTConverter.java

@@ -0,0 +1,87 @@
+package com.github.hhhzzzsss.songplayer.conversion;
+
+import com.github.hhhzzzsss.songplayer.playing.SongHandler;
+import com.github.hhhzzzsss.songplayer.song.Instrument;
+import com.github.hhhzzzsss.songplayer.song.Note;
+import com.github.hhhzzzsss.songplayer.song.Song;
+
+public class TXTConverter {
+    public static Instrument[] instrumentIndex = new Instrument[] {
+            Instrument.HARP,
+            Instrument.BASS,
+            Instrument.BASEDRUM,
+            Instrument.SNARE,
+            Instrument.HAT,
+            Instrument.GUITAR,
+            Instrument.FLUTE,
+            Instrument.BELL,
+            Instrument.CHIME,
+            Instrument.XYLOPHONE,
+            Instrument.IRON_XYLOPHONE,
+            Instrument.COW_BELL,
+            Instrument.DIDGERIDOO,
+            Instrument.BIT,
+            Instrument.BANJO,
+            Instrument.PLING,
+    };
+
+    public static Song getSongFromBytes (byte[] bytes, String fileName) {
+        return getSong(new String(bytes), fileName);
+    }
+
+    public static Song getSong (String data, String fileName) {
+        if (!data.contains(":")) return null;
+
+        int length = 0;
+
+        final Song song = new Song(fileName);
+
+        for (String line : data.split("\r\n|\r|\n")) {
+            if (line.isBlank()) continue;
+
+            if (line.startsWith("title:")) {
+                song.name = line.substring("title:".length());
+                continue;
+            }
+
+            final String[] split = line.split(":");
+
+            final int tick = Integer.parseInt(split[0]);
+            int pitch = (int) Float.parseFloat(split[1]) + 33 + SongHandler.getInstance().pitch;
+            final String instrument = split[2];
+
+            int intInstrument = -1;
+            try {
+                intInstrument = Integer.parseInt(instrument);
+            } catch (NumberFormatException ignored) {}
+
+            if (intInstrument == -1) continue;
+
+            if (intInstrument > instrumentIndex.length - 1) continue;
+
+            final Instrument instrumentClass = instrumentIndex[intInstrument];
+
+            if (instrumentClass == null) continue;
+
+            final int time = tick * 50;
+
+            length = Math.max(length, time);
+
+            while (pitch < 33) pitch += 12;
+            while (pitch > 57) pitch -= 12;
+
+            pitch -= 33;
+
+            song.add(
+                    new Note(
+                            pitch + (instrumentClass.instrumentId * 25),
+                            time
+                    )
+            );
+        }
+
+        song.length = song.get(song.size() - 1).time + 50;
+
+        return song;
+    }
+}

src/main/java/com/github/hhhzzzsss/songplayer/song/SongLoaderThread.java

@@ -4,6 +4,7 @@ import com.github.hhhzzzsss.songplayer.SongPlayer;
 import com.github.hhhzzzsss.songplayer.Util;
 import com.github.hhhzzzsss.songplayer.conversion.MidiConverter;
 import com.github.hhhzzzsss.songplayer.conversion.NBSConverter;
+import com.github.hhhzzzsss.songplayer.conversion.TXTConverter;
 
 import java.io.IOException;
 import java.net.URL;
@@ -75,6 +76,15 @@ public class SongLoaderThread extends Thread{
 				catch (Exception e) {}
 			}
 
+			if (song == null) {
+				try {
+					song = TXTConverter.getSongFromBytes(bytes, filename);
+				}
+				catch (Exception e) {
+					e.printStackTrace();
+				}
+			}
+
 			if (song == null) {
 				throw new IOException("Invalid song format");
 			}