Ascii Street View Enhancements

var speed = 0.0;
var delta = 0.005;
var isPaused = false;
var isHudHidden = false;
var oldRender = window.render;

window.render = function () {
    if (isHudHidden) {
        title.style.opacity = 0;
        title.style.pointerEvents = 'none';
        options.style.opacity = 0;
        options.style.pointerEvents = 'none';
    } else {
        title.style.opacity = 1;
        title.style.pointerEvents = 'auto';
        options.style.opacity = 1;
        options.style.pointerEvents = 'auto';
    }

    if (isPaused) {
        isUserInteracting = true;
    } else if (!isUserInteracting) {
        lon += speed;
    }

    oldRender();

    if (isPaused) {
        isUserInteracting = false;
    }
}

window.addEventListener("keydown", function (event) {
    var code = "which" in event ? event.which : event.keyCode;
    if (code == 32) { // Space
        isPaused = !isPaused;
    } else if (code == 189) { // -
        delta -= 0.0001;
    } else if (code == 187) { // =
        delta += 0.0001;
    } else if (code == 109) { // Numpad Minus
        speed -= delta;
    } else if (code == 107) { // Munpad Plus
        speed += delta;
    } else if (code == 72) { // h
        isHudHidden = !isHudHidden;
    }
}, false);