/**
 * randomComposer.java
 *
 * Implementation of abstract composer class.
 * Prototype of the equalTemperComposer abstract class
 * and its implementation in chordComposer.
 *
 * This module is part of Karl Brown's MIDI programming project.
 *
 */


package MidiApps;

import java.io.*;
import java.util.*;
import javax.sound.midi.*;

/**
 *
 * @author  Karl Brown
 * @version 1.0
 * last updated 2/16/2003
 */

class playerGroupx {

	byte minMidiPitch;
	byte pitchRangeInOctaves;
	byte patch;
	byte maxNumPitches;
	byte maxNoteLength;
	byte minVelOn;
	byte minVelOff;
	byte maxVelOn;
	byte maxVelOff;
	float chanceRest;

}

public class randomComposer extends composer {



  player p;

  int numDivisions;
  int numGroups;

  playerGroupx group[] = new playerGroupx[15];



  public void setPatch(byte patchIn, int index) {
	  if (index < 15)
	  {
	  	group[index].patch = patchIn;
	  }
  }

  public byte getPatch(int index) {

	  return group[index].patch;
  }



  public void compose() {

	try
	{
		if (s == null) {
			createSequence();
		}

		String TrackName;
		Track t;
        bentPlayer bp;
        bentPitch bh;

 		equalTemperedBentPitchFactory fact = new equalTemperedBentPitchFactory();
 		fact.setTracer(tr);

 		fact.setBaseMidiPitch((byte)C_DOWN_4);
 		fact.setDivisions((short)5);
 		fact.setStepPosition((short)0);

 		bentScale bs;
 		equalTemperedScale ets = new equalTemperedScale();
 		bs = (bentScale)ets;
 		bs.setTracer(tr);

        Random ran = new Random();
        short randomNum;

//track 0 - control
		t = s.createTrack();
        controlPlayer cp = new controlPlayer();
        cp.setTrack(t);
        cp.setTrackName("Control track 0");
        cp.generalMidiOn();
        cp.setTempo((byte)0x02, (byte)0xA1, (byte)0x20);
		cp.endOfTrack();

//track 1
         bp = new bentPlayer();
         p = (player)(bp);
 		 t = s.createTrack();
         p.setTracer(tr);
         p.setTrack(t);
         p.setTick(0);
         p.setTrackName("random track 1");
         p.addChannel(0);
         p.omniOff();
         p.polyOff();
         setPatch(PIANO,0);
         p.setPatch(getPatch(0));


         p.setVelOn(0x60);
         p.setVelOff(0x60);
 		 p.setDur((long)60);



 		for (short i = 0; i <= 40; i++)
 		{
 			fact.setStepPosition(i);
 			fact.calculateBendAmount();
 			fact.calculateBendBytes();
 			bh = fact.getBentPitch();
 			bs.addBentPitch(bh);
 		}


         for (int i = 0; i <= 200; i++)
         {
 			randomNum = (short)(ran.nextInt(41));
 			bh = (bentPitch)(bs.elementAt(randomNum));
 			bp.setBentPitch(bh);
         	bp.play();
 		}


 		p.endOfTrack();

//track 2
         bp = new bentPlayer();
         p = (player)(bp);
 		 t = s.createTrack();
         p.setTracer(tr);
         p.setTrack(t);
         p.setTick(0);
         p.setTrackName("random track 2");
         p.addChannel(1);
         p.omniOff();
         p.polyOff();
         p.setPatch(JAZZ_GUITAR);


         p.setVelOn(0x60);
         p.setVelOff(0x60);
 		 p.setDur((long)60);



 		for (short i = 0; i <= 40; i++)
 		{
 			fact.setStepPosition(i);
 			fact.calculateBendAmount();
 			fact.calculateBendBytes();
 			bh = fact.getBentPitch();
 			bs.addBentPitch(bh);
 		}


         for (int i = 0; i <= 200; i++)
         {
 			randomNum = (short)(ran.nextInt(41));
 			bh = (bentPitch)(bs.elementAt(randomNum));
 			bp.setBentPitch(bh);
         	bp.play();
 		}


 		p.endOfTrack();

//end track 2

	} //try
		catch(Exception e)
	{
		tr.trace("randomComposer::compose: Exception caught:");
		tr.trace(e.toString());
	} //catch

  }
}