1const loadAudio = [
 2    new Audio(url="../res/sfx/os/loadelement1.ogg"),
 3    new Audio(url="../res/sfx/os/loadelement2.ogg"),
 4    new Audio(url="../res/sfx/os/loadelement3.ogg"),
 5    new Audio(url="../res/sfx/os/loadelement4.ogg")
 6]
 7const not_allowed = ["AUDIO", "META", "TITLE", "LINK", "SOURCE", "SCRIPT", "BR"];
 8
 9function getRandomInt(min, max) {
10    min = Math.ceil(min);
11    return Math.floor(Math.random() * (Math.floor(max) - min + 1)) + min;
12}
13
14function playAudio(audio){
15    audio.volume = 0.1;
16    audio.currentTime = 0;
17    audio.play();
18}
19
20const all = document.getElementsByTagName("*");
21let total = 0;
22for (i in all) {
23    const node = all[i];
24    if((node.childElementCount == 0) && (not_allowed.indexOf(node.tagName) === -1) && node.style){
25        total++;
26        node.setAttribute("data-display", node.style.display);
27        node.style.display = "none";
28    }
29}
30
31function start_loading(speed=parent.loadSpeed, not_allowed=[], callback) {
32
33    function onNodeLoaded(node){
34        node.style.display = node.getAttribute("data-display");
35        counter++;
36        ratio = counter / total * 100;
37        randomAudio();
38    
39        if (ratio >= 100 && callback)
40            callback()
41    }
42    
43    let counter = 0;
44    let i = 0;
45    for (element in all) {
46        const node = all[element];
47        if((node.childElementCount == 0) && (not_allowed.indexOf(node.tagName) === -1) && node.style){
48
49            i += getRandomInt(250 / speed, 500 / speed);
50            setTimeout(() => { onNodeLoaded(node);}, i);
51        }
52    }
53}
54
55function randomAudio(){
56    const random_audio = getRandomInt(0, loadAudio.length - 1);
57    playAudio(loadAudio[random_audio]);
58}
59