import josx.platform.rcx.*;

public class Song
{
    Note[] notes;

    Song(String code)
    {
	char[] chars = code.toCharArray();

	notes = new Note[chars.length/4];
	for (int i = 0 ;  i < notes.length ; i ++)
	    {
		int pauseB4 = chars[4*i] - '0';
		char letter = chars[4*i+1];
		int length = chars[4*i+3] - '0';
		int octave = chars[4*i+2] - '0';

		notes[i] = 
		    new Note(letter, octave, length, pauseB4);
	    }
    }

    void play(Keyboard kbrd, int msecs)
    {
	for (int i = 0 ; i < notes.length ; i ++)
	    {
		if (notes[i] != null)
		    notes[i].play(kbrd, msecs);
	    }
    }

    void combineNotes()
    {
	//find notes with no pauseB4 and combine them with their neighbors
	for (int i = 1 ; i < notes.length ; i ++)
	    {
		if (notes[i].pauseB4 == 0)
		    {
			notes[i].combine(notes[i-1]);
			notes[i-1] = null;
		    }
	    }
    }
}