const linexp = (x,x0,x1,y0,y1) => y0 * (y1/y0) ** ((x-x0)/(x1-x0));
const linlin = (x,x0,x1,y0,y1) => y0 + (y1 - y0) * clamp01((x-x0)/(x1-x0));

const tri = synth.def((phase, env) => 1.22*(4.*Math.abs(phase % 1 - 0.5) - 1.) * env.value);
const dist = synth.def((phase, env, tick, options) => Math.atan(25*(Math.abs(phase % 1 - 0.5) - 0.25) * env.value));

let rhythm = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0.5,0.5];
let i = 0;
loop( () => {
    // click
    sine.play((tick) => linlin(tick, 0, 0.03, 127, 0), {attack:0.0005, release:0.05, amp:0.1});
    // boom
    sine.play(
        (tick) => linlin(tick, 0, 0.3, a1, f1),
        //{env: adsr2, attack:0.01, decay:0.1, decay_level:0.1, sustain:0.15, sustain_level:0.5, release:0.2, amp:2}
        {env: adsr, attack:0.26, release:0.2}
    );
    // low thump
    tri.play(
        (tick) => linlin(tick, 0, 0.1, e3, f1),
        {env: adsr, attack:0.005, release:0.1}
    );
    // high tump
    tri.play(
        (tick) => linlin(tick, 0, 0.03, a5, a3),
        {env: adsr, attack:0.005, release:0.03, amp:0.3}
    );
    sleep(rhythm[i]);
    i = (i+1)%rhythm.length;
    
}, {name:"kick"});