(() => {

  invAnimDone = false;
  invAnimSpeed = 300;


  function hsl2rgb(h, s, l) {
    s /= 100;
    l /= 100;
    const k = n => (n + h / 30) % 12;
    const a = s * Math.min(l, 1 - l);
    const f = n =>
      l - a * Math.max(-1, Math.min(k(n) - 3, Math.min(9 - k(n), 1)));
    return [255 * f(0), 255 * f(8), 255 * f(4)];
  }

  function slideInYGui(yElement,yStart,yEnd,duration){
    yElement.$guiTop = yStart;
    this.startTime = Date.now();

    this.calc = yEnd - ((startTime+duration - Date.now()) / duration) * yEnd;
    yElement.$guiTop = this.calc;
    
    this.slidn = setInterval(function(){
      if(Date.now()-duration-startTime < 0 && yElement != yEnd){
          this.calc = yEnd - ((startTime+duration - Date.now()) / duration) * yEnd;
          yElement.$guiTop = this.calc;
      }else{
        yElement.$guiTop = yEnd;
        clearInterval(slidn);
      }
    }
    ,16);
  }
  
  function invSlideIn(){
      if (ModAPI.mcinstance.$currentScreen != null) {
          if(ModAPI.mcinstance.$currentScreen.$guiTop != null){
              if(!invAnimDone){
                  slideInYGui(ModAPI.mcinstance.$currentScreen,0,ModAPI.mcinstance.$currentScreen.$guiTop,invAnimSpeed)
                  invAnimDone = true;
              } 
          } else {
              invAnimDone = false;
          }
      } else {
              invAnimDone = false;
      }
  }

function customMainMenu() {
  if (ModAPI.mcinstance.$currentScreen != null) {
    if (
      ModAPI.currentScreen().startsWith("net.minecraft.client.gui.GuiMainMenu")
    ) {
      
      var singlePlayer =
        ModAPI.mcinstance.$currentScreen.$buttonList.$array1.data[0];
      
      var multiPlayer =
        ModAPI.mcinstance.$currentScreen.$buttonList.$array1.data[1];
      
      var mods = ModAPI.mcinstance.$currentScreen.$buttonList.$array1.data[2];
      
      var forkOnGitHub =
        ModAPI.mcinstance.$currentScreen.$buttonList.$array1.data[3];
      
      var options =
        ModAPI.mcinstance.$currentScreen.$buttonList.$array1.data[4];
      
      var editProfile =
        ModAPI.mcinstance.$currentScreen.$buttonList.$array1.data[5];
      
      var launguage =
        ModAPI.mcinstance.$currentScreen.$buttonList.$array1.data[6];
      
      var currentScreen = ModAPI.mcinstance.$currentScreen;

      var buttonDistance = 42;
      var buttonDistanceRel = 22;
      var buttonSpacing = 2;
      var buttonWidth = 100;
      var enc = new TextEncoder();
      //options
      options.$width13 = buttonWidth;
      options.$yPosition = currentScreen.$height7 - buttonDistance;
      //mods
      mods.$width13 = buttonWidth / 2;
      mods.$xPosition0 = options.$xPosition0 - buttonWidth / 2 - buttonSpacing;
      mods.$yPosition = currentScreen.$height7 - buttonDistance;
      //SinglePlayer
      singlePlayer.$width13 = buttonWidth;
      singlePlayer.$yPosition = options.$yPosition - buttonDistanceRel;
      //MultiPlayer
      multiPlayer.$width13 = buttonWidth + launguage.$width13 + buttonSpacing;
      multiPlayer.$xPosition0 =
        singlePlayer.$xPosition0 + buttonWidth + buttonSpacing;
      multiPlayer.$yPosition = options.$yPosition - buttonDistanceRel;
      //Edit profile
      editProfile.$width13 = buttonWidth;
      editProfile.$yPosition = currentScreen.$height7 - buttonDistance;
      //Lang
      launguage.$xPosition0 =
        editProfile.$xPosition0 + editProfile.$width13 + buttonSpacing;
      launguage.$yPosition = currentScreen.$height7 - buttonDistance;
      //Fork
      forkOnGitHub.$width13 = buttonWidth / 2;
      forkOnGitHub.$yPosition = mods.$yPosition - buttonDistanceRel;
      forkOnGitHub.$xPosition0 = mods.$xPosition0;
      forkOnGitHub.$displayString.$characters.data = enc.encode("Fork");

      currentScreen.$openGLWarning1.$characters.data = enc.encode("");
      //currentScreen.$splashText.$characters.data = enc.encode("Justin is the sped version of Daniel")
    }
    }
    }
  
  function drawHudThings(){
    
  }

  function setIntervalThings(){
    invSlideIn();
    customMainMenu();
  }

  ModAPI.addEventListener("drawhud",drawHudThings);
  var interv = setInterval(setIntervalThings,16);
})();