// Timestamp generator
const ts = new Timestamp();

// A snapshot of the current timestamp
const snapshot = ts.get();

// A constant containing the previous snapshot
const now = new Const(snapshot);

// The time since the code was executed
const delta = new Diff(ts, now);

setInterval(function() {
    console.log(delta.get());
}, 500);

// Timestamp generator
const ts = new Timestamp();

// The time since the code was executed
const delta = ts.pipe(Diff, ts.toConst());

setInterval(function() {
    console.log(delta.get());
}, 500);

const loop = new Loop();

const mousePosition = new GetMousePosition();
const mousePositionSnapshot = mousePosition.toVar();

const mouseMoving = new Var(false)
    .execute(function() {
        const snapshot = mousePosition.toConst();
        const equal = snapshot.pipe(Equals, mousePositionSnapshot);
        mousePositionSnapshot.set(snapshot);
        return equal;
    })
    .evaluatePeriodically(loop);

const lightIntensity = new Var(0)
    .execute(function(ref) {
        return ref
            .pipe(
                Add,
                new If(mouseMoving, new Const(1), new Const(-1))
                    .pipe(Mul, new Const(4))
                    .pipe(Mul, loop.dt)
            )
            .pipe(Clamp, new Const(0), new Const(1));
    })
    .observe(console.log)
    .evaluatePeriodically(loop);