import javax.sound.midi.*;
public class Rytmilooja3{
 public static void main(String argumendid[]) throws Exception{
         ShortMessage lahti = new ShortMessage();
         ShortMessage kinni = new ShortMessage();
         ShortMessage lahti2 = new ShortMessage();
         ShortMessage kinni2 = new ShortMessage();
         ShortMessage lahti3 = new ShortMessage();
         ShortMessage kinni3 = new ShortMessage();
         ShortMessage algus = new ShortMessage();
         algus.setMessage(ShortMessage.PROGRAM_CHANGE, 0, 117, 0);
         lahti.setMessage(ShortMessage.NOTE_ON, 0, 65, 93);
         kinni.setMessage(ShortMessage.NOTE_OFF, 0, 65, 93);
         lahti2.setMessage(ShortMessage.NOTE_ON, 0, 77, 93);
         kinni2.setMessage(ShortMessage.NOTE_OFF, 0, 77, 93);
         lahti3.setMessage(ShortMessage.NOTE_ON, 0, 69, 93);
         kinni3.setMessage(ShortMessage.NOTE_OFF, 0, 69, 93);
         Sequence sekvents=new Sequence(Sequence.PPQ, 4);
          //Taktimõõt 2/4, ehk 4 tiksu löögi, 8 tiksu takti kohta
         int taktidearv=16;
         int taktipikkus=8; //tiksu
         Track rada=sekvents.createTrack();
         rada.add(new MidiEvent(algus, 0));
         for(int takt=0; takt<taktidearv; takt++){
           int taktialgus=takt*taktipikkus;
           rada.add(new MidiEvent(lahti, taktialgus));
           rada.add(new MidiEvent(kinni, taktialgus+4));
           rada.add(new MidiEvent(lahti2, taktialgus+4));
           rada.add(new MidiEvent(kinni2, taktialgus+7));
           for(int tiks=0; tiks<taktipikkus; tiks=tiks+1){
            if(Math.random()<0.8){
             rada.add(new MidiEvent(lahti3, taktialgus+tiks));
             rada.add(new MidiEvent(kinni3, taktialgus+tiks+1));
            }
           }
         }
         MidiSystem.write(sekvents, 1, 
                    new java.io.FileOutputStream("rytm.mid"));
         Sequencer sequencer=MidiSystem.getSequencer();
         sequencer.open();
         sequencer.setSequence(sekvents);
         sequencer.start();
         sequencer.setTempoInBPM(200);
         sequencer.addMetaEventListener(new MetaEventListener(){
           public void meta(MetaMessage m){
             //kui lugu läbi, siis lõpetatakse
             if(m.getType()==47){System.exit(0);}
           }
         });
  }
}