ditty.bpm = 210;

function melodyPattern(notes, baseNote) {
    return () => {
        for(i = 0; i < notes.length; i++) {
            sine.play(notes[i]);
            sleep(0.5);
            sine.play(baseNote);
            sleep(0.5);
        }
    };
}

function simpleMelodyPattern(notes) {
    return () => {
        for(i = 0; i < notes.length; i++) {
            sine.play(notes[i]);
            sleep(0.5);
        }
    };
}

const melodySeq0 = () => {
    melodyPattern([d5, e5, f5, g5], a4)();
    melodyPattern([bb4, d5, g5, f5], g4)();
    melodyPattern([e5, f5], c5)();
    melodyPattern([g5, c5], g4)();
    melodyPattern([bb4, a4, f5, e5], f4)();
    
    const notes0 = [d5, e5, f5, d5];
    melodyPattern(notes0, bb4)();
    //same as previous pattern with another base note
    melodyPattern(notes0, g4)();
    
    melodyPattern([e5, cs5, e5, cs5], a4)();
    melodyPattern([a5, cs5, a5, a5], a4)();
};

const melodySeq1 = () => {
    melodyPattern([f5, d5], a4)();
    simpleMelodyPattern([f5, g5, a5, a4])();
    simpleMelodyPattern([
        a5, bb4, d5, bb5, a5, bb4, d5, bb5,
        g5, g4, c5, g4, e5, f5, g5, c5,
        g5, a4, c5, a5, f5, a4, e5, c5,
        f5, bb4, d5, bb4, d5, e5, f5, bb4,
        f5, g4, bb4, g4, d5, e5, f5, g4
    ])();
    melodyPattern([f5, cs5, e5, cs5, a5, cs5], a4)();
    melodyPattern([a5, a5], cs5)();
};

const melodySeqEnd = simpleMelodyPattern([d5, a4, e5, f5]);

const bassPattern = simpleMelodyPattern([
        d3, 0, 0, 0, 0, d3, e3, f3,
        g3, 0, 0, 0, 0, g3, a3, bb3,
        c4, 0, 0, 0, 0, bb3, a3, g3,
        f3, 0, g3, 0, a3, 0, f3, 0,
        bb3, 0, 0, 0, 0, c4, bb3, a3,
        g3, 0, 0, 0, 0, a3, bb3, g3,
        a3, 0, 0, 0, a3, 0, 0, 0,
        a3, 0, g3, 0, f3, 0, e3, 0
    ]);

loop(() => {
    melodySeq0();
    melodySeq0();
    melodySeq1();
    melodySeq1();
    melodySeqEnd();
    melodySeqEnd();
    melodySeqEnd();
    simpleMelodyPattern([d5, 0, 0, 0])();
}, { name: 'melody' });

loop(() => {
    sleep(32);
    bassPattern();
    bassPattern();
    bassPattern();
    simpleMelodyPattern([d3, 0, 0, 0, 0, 0, 0, 0])();
    sleep(4);
}, { name: 'bass' });