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              #cc
  max-width 1536px
  margin 0 auto
            
          
!
            
              var w = 1536;
var h = 864;
var canvas;
var epoch = 0;
var ename = ["PROTON LIMIT EXCEEDED!", "hydrogen", "helium", "lithium", "beryllium", "boron", "carbon", "nitrogen", "oxygen", "fluorine", "neon", "natrium", "magnesium", "aluminium", "silicon", "phosphorus", "sulfur", "chlorine", "argon", "potassium", "calcium", "scandium", "titanium", "vanadium", "chromium", "manganese", "iron", "cobalt", "nickel", "copper", "zinc", "gallium", "germanicum", "arsenic", "selenium", "bromine", "krypton", "rubidium", "strontium", "yttrium", "zirconium", "niobium", "molybdenum", "technetium", "ruthenium", "rhodium", "palladium", "silver", "cadmium", "inidum", "tin", "antimony", "tellurium", "iodine", "xenon"];
var palette = [null, true, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false];
var period = [null, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2];
var group = [null, 0, 7, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7];
var table = [[1, 0, 0, 0, 0, 0, 0, 2], [3, 4, 5, 6, 7, 8, 9, 10], [11, 12, 13, 14, 15, 16, 17, 18]];
var dia = 60;
var cur = 1;
var ch1 = 0;
var ch2 = 0;

function setup() {
  canvas = createCanvas(w,h);
  canvas.parent("cc");
  textFont("Montserrat");
  colorMode(HSB);
  ellipseMode(CENTER);
  rectMode(CENTER);
  noStroke();
}

function draw() {
  background(255);
  switch (epoch) {
    case 0:
      textAlign(CENTER, CENTER);
      textSize(48);
      text("Find your way to", w/2, h*3/8);
      text("Click to continue...", w/2, h*5/8);
      textSize(144);
      text("VANADIUM", w/2, h/2);
      break;
    case 1:
      textSize(48);
      text("You have dreamed about it since time immemorial.\n\nVanadium!\n\nThe single most desired element of your life.\nNow you have access to this machine.\nStarting with hydrogen, it can skip to the element with its\nproton number equal to the next element of the previous\none's Z's Collatz sequence. It can also save elements up to argon\nfor later use in a palette (top row) and skip to those at any time.\nBesides, it can perform a lookup on the periodic table, using\nan element from the palette to determine the period\nand another to determine the group. However, it has a proton\nlimit of 54. This could be life-changing... Now get to 23!", w/2, h/2);
      break;
    case 2:
      drawpal();
      drawele(cur, true, 5, w/2, h/2);
      fill(0);
      textSize(48);
      text(ename[cur], w/2, h/4);
      if (cur) rect(w/2, h*13/16, w/2, h/8, h/32);
      fill(60);
      rect(w/2, h*15/16, w/2, h/16, h/32);
      fill(100);
      textSize(96);
      text("COLLATZ!", w/2, h*13/16);
      textSize(36);
      text("Periodic table lookup", w/2, h*15/16);
      break;
    case 3:
      drawpal();
      drawele(ch1, ch1, 5, w/3, h/2);
      drawele(ch2, ch2, 5, w*2/3, h/2);
      fill(0);
      textSize(36);
      if (!ch1) {
        text("Choose from above\nto determine the period", w/3, h/4);
      } else if (!ch2) {
        text("Choose from above\nto determine the group", w*2/3, h/4);
      } else if (table[period[ch1]][group[ch2]]) {
        rect(w/2, h*13/16, w/2, h/8, h/32);
      }
      fill(60);
      rect(w/2, h*15/16, w/2, h/16, h/32);
      fill(100);
      textSize(72);
      text("Perform lookup", w/2, h*13/16);
      textSize(36);
      text("Cancel lookup", w/2, h*15/16);
      break;
    case 4:
      fill(0);
      textSize(48);
      text("You've found your way to", w/2, h*3/8);
      text("Congratulations...", w/2, h*5/8);
      textSize(144);
      text("VANADIUM", w/2, h/2);
      break;
  }
}

function mouseClicked() {
  switch (epoch) {
    case 0:
    case 1:
      epoch += 1;
      break;
    case 2:
      if (mouseY > h/8-dia && mouseY < h/8+dia) {
        let e = Math.floor((mouseX-w/2)/dia*3/4+10);
        if (e == 19 || !palette[e]) e = 0;
        if (e) cur = e;
      } else if (mouseX > w/4 && mouseX < w*3/4) {
        if (mouseY > h*3/4 && mouseY < h*7/8) {
          if (cur%2) cur = cur*3+1;
          else cur /= 2;
          if (cur > 54) cur = 0;
          else if (cur && cur <= 18) palette[cur] = true;
          else if (cur == 23) epoch = 4;
        } else if (mouseY > h*29/32 && mouseY < h*31/32) {
          epoch += 1;
        }
      }
      break;
    case 3:
      if (mouseY > h/8-dia && mouseY < h/8+dia) {
        let e = Math.floor((mouseX-w/2)/dia*3/4+10);
        if (e == 19 || !palette[e]) e = 0;
        if (e) {
          if (!ch1) ch1 = e;
          else if (!ch2) ch2 = e;
        }
      } else if (mouseX > w/4 && mouseX < w*3/4) {
        if (mouseY > h*3/4 && mouseY < h*7/8 && ch1 && ch2) {
          cur = table[period[ch1]][group[ch2]];
          if (cur && cur <= 18) palette[cur] = true;
          epoch -= 1;
          ch1 = 0;
          ch2 = 0;
        } else if (mouseY > h*29/32 && mouseY < h*31/32) {
          epoch -= 1;
          ch1 = 0;
          ch2 = 0;
        }
      }
      break;
  }
}

function drawpal() {
  for (let i = 1; i <= 18; i += 1) {
    drawele(i, palette[i], 1, w/2+(i-9.5)*dia*4/3, h/8);
  }
}

function drawele(z, col, d, x, y) {
  push();
  noStroke();
  if (col) {
    fill(z*69%360, 100, 100);
  } else {
    fill(80);
  }
  ellipse(x, y, d*dia, d*dia);
  if (z) {
    fill(100);
    textSize(d*dia/2);
    text(z, x, y);
  }
  pop();
}
            
          
!
999px
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