css Audio - Active file-generic CSS - Active Generic - Active HTML - Active JS - Active SVG - Active Text - Active file-generic Video - Active header Love html icon-new-collection icon-person icon-team numbered-list123 pop-out spinner split-screen star tv

Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <div id="app">
  <div id="score"></div>
  <svg id="svg"></svg>
  
  <div id="launch-screen" class="is-visible">
    
    <div id="launch-screen-content">
      <h1 id="launch-screen__title"></h1>
      <p id="launch-screen__description"></p>
      <button class="btn" id="start-btn">PLAY</button>
    </div>
  </div>
  
</div>
            
          
!
            
              @keyframes jumping {
  0%    {transform:scale(2);}
  100%  {transform:scale(1);}
}

@keyframes dotReveal {
  to  {opacity:1;}
}

@keyframes line {
  0%    {stroke-dashoffset:0}
  100%    {stroke-dashoffset:100%}
}

body {
  cursor:crosshair;
  background-color: black;
  background-image: linear-gradient(to top, rgba(46, 204, 113,0.2) 1%, rgba(255,255,255,0) 0),
                    linear-gradient(to right, rgba(46, 204, 113,0.2) 1%, rgba(255,255,255,0) 0);
  background-size: 50px 50px;
}

svg, html, body, #app  {
  box-sizing: border-box;
  height:100%;
  width:100%;
  padding:0;
  margin:0;
  overflow:hidden;
}

svg {position: relative;z-index:1;}

.dot {
  z-index:10;
  stroke-width:4;
  stroke:black;
  width: 10px;
  height: 10px;
  fill: rgba(241, 196, 15,1.0);
  -moz-transform-origin: center;
  -webkit-transform-origin: center;
  transform-origin: center;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.320, 1.275);
}

.dot--starting.dot--starting {
  fill:black;
  stroke: rgba(46, 204, 113,1.0);
  stroke-width:3;
  stroke-miterlimit: outside;
}

.dot:not(.dot--starting) {
  opacity:0;
  animation: dotReveal 1s linear;
  animation-fill-mode: forwards;
}

#svg  .dot:hover {
  transform: scale(2);
}

#svg .dot[data-selected=true] {
  opacity:1;
  fill: rgba(46, 204, 113,1.0);
  animation: jumping 0.5s ease-in-out alternate infinite;
  animation-delay:0;
}

#svg  .dot[data-visited=true] {
  fill:rgba(46, 204, 113,1.0);
  animation: jumping 0.5s ease-in-out alternate infinite;
  animation-delay:0;
  opacity:1;
}

.line {
  z-index:10;
  stroke: rgba(46, 204, 113,1.0);
  stroke-width:2;
  stroke-dasharray: 2 16;
  animation: line 10s linear infinite;
}

@media (max-width:480px) { 
  #preline {
    display: none;
  }
}

#score {
  position: fixed;
  z-index:0;
  top: 50%;
  left:50%;
  width: 100%;
  text-align:center;
  transform: translate(-50%, -50%);
  font-size:20em;
  color: rgba(46, 204, 113,0.2);
  font-family: 'Bungee Outline', cursive;
}

.btn {
  background: transparent;
  cursor:pointer;
  color:rgba(241, 196, 15,1.0);
  font-weight:bold;
  padding: 15px 60px;
  border-radius: 6px;
  border: 3px solid rgba(241, 196, 15,1.0);
  transition: all 0.3s ease-out;
}

.btn:hover {
  background: rgba(241, 196, 15,1.0);
  color: black;
}

#btn-start {
  position: absolute;
  top: 50%;
  left:50%;
  transform: translate(-50%, -50%);
}

#launch-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  visibility:hidden;
  position: absolute;
  z-index: 10;
  background-image: linear-gradient(45deg, black, rgba(46, 204, 113,0.2));
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  opacity:0;
  transition: all 0.8s cubic-bezier(0.175, 0.885, 0.320, 1.275);
}

#launch-screen.is-visible {
  opacity:1;
  visibility:visible;
}

#launch-screen-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 50px;
  transform: scale(0.8);
  transition: all 0.8s cubic-bezier(0.175, 0.885, 0.320, 1.275);
}


#launch-screen.is-visible #launch-screen-content {
  transform: scale(1);
}

#launch-screen-content h1 {
  position: relative;
  font-family: 'Bungee Outline', cursive;
  color: rgba(46, 204, 113,1.0);
  font-size: 4em;
  margin: 0 0 0.4em 0;
}


#launch-screen-content p {
  font-family: 'Space Mono', monospace;
  color:#ccc;
  font-size: 1em;
  margin: 0 0 3em 0;
}

#lastScore {display:none;}
#lastScore.is-visible {display:block;}

#lastScore__number {color:rgba(231, 76, 60,1.0);}

            
          
!
            
              ////////////////
// helpers
////////////////

function getDistance(obj1, obj2) {
  return Math.floor(
    Math.sqrt(Math.pow(obj1.cx - obj2.cx, 2) + Math.pow(obj1.cy - obj2.cy, 2))
  );
}

function getRandomArbitrary(min, max) {
  return Math.floor(Math.random() * (max - min) + min);
}

function comparator(a, b) {
  if (a[1] < b[1]) return -1;
  if (a[1] > b[1]) return 1;
  return 0;
}

function difference(source, toRemove) {
  return source.filter(function(value) {
    return toRemove.indexOf(value) == -1;
  });
}

////////////////
// global vars
////////////////

var svg = document.getElementById("svg");
var dotMatrix = document.createElementNS(
  "http://www.w3.org/2000/svg",
  "circle"
);
var lineMatrix = document.createElementNS("http://www.w3.org/2000/svg", "line");
var screenW = window.innerWidth;
var screenH = window.innerHeight;
var totalDist = document.getElementById("distance");

////////////////
// line constructor
////////////////

function Line(x1, y1, x2, y2) {
  this.x1 = x1;
  this.y1 = y1;
  this.x2 = x2;
  this.y2 = y2;
  this.el = document.createElementNS("http://www.w3.org/2000/svg", "line");
  this.class = "line";
  this.update = function(x1, y1, x2, y2) {
    this.el.setAttribute("x1", x1 || this.x1);
    this.el.setAttribute("y1", y1 || this.y1);
    this.el.setAttribute("x2", x2 || this.x2);
    this.el.setAttribute("y2", y2 || this.y2);
    this.setAttr("class", this.class);
  };
  this.setAttr = function(attr, value) {
    this.el.setAttribute(attr, value);
  };
  this.append = function() {
    svg.insertBefore(this.el, svg.firstChild);
  };
}

////////////////
// dot constructor
////////////////

function Dot(r, cx, cy) {
  this.r = r;
  this.cx = cx;
  this.cy = cy;
  this.el = document.createElementNS("http://www.w3.org/2000/svg", "circle");
  this.class = "dot";
  this.update = function() {
    this.el.setAttribute("r", this.r);
    this.el.setAttribute("cx", this.cx);
    this.el.setAttribute("cy", this.cy);
    this.setAttr("class", this.class);
  };

  // activates a dot
  this.activate = function() {
    for (i = 0; i < dots.num; i++) {
      dots.list[i].setAttr("data-selected", "false");
    }
    this.setAttr("data-selected", "true");
  };

  this.visited = function() {
    this.setAttr("data-visited", "true");
  };

  // sets attribute to element
  this.setAttr = function(attr, value) {
    this.el.setAttribute(attr, value);
  };

  // gets attribute to element
  this.getAttr = function(attr) {
    return this.el.getAttribute(attr);
  };

  // appends element to svg and attaches event listeners
  this.append = function() {
    svg.appendChild(this.el);
    this.el.addEventListener("click", this.onClick);
  };

  // on click on element
  this.onClick = function(event) {
    //gets the id and the coords of the dot
    var thisId = Number(event.target.getAttribute("data-id").substr(3, 2));
    var thisCx = dots.list[thisId].cx;
    var thisCy = dots.list[thisId].cy;

    // calculates the distance between dots
    var distances = [];
    for (i = 0; i < dots.num; i++) {
      distances[i] = [i, getDistance(dots.selected, dots.list[i])];
    }
    distances.sort(comparator);
    distances.splice(0, 1);
    var distancesLeft = [];
    for (i = 0; i < distances.length; i++) {
      if (dots.left.includes(distances[i][0])) {
        distancesLeft.push(distances[i][0]);
      }
    }

    //if the element is the nearest
    if (thisId == distancesLeft[0] && dots.left.includes(thisId)) {
      // calculates distances
      var newDistance = getDistance(dots.list[thisId], dots.selected);

      app.score.update(1); // punteggio x numero di poi
      // app.score.update(newDistance); punteggio x distanza

      //sets the active class to the selected dot
      dots.list[thisId].activate();
      dots.list[thisId].visited();

      // creates the line
      lines.list.push(
        new Line(
          dots.selected.cx,
          dots.selected.cy,
          dots.list[thisId].cx,
          dots.list[thisId].cy
        )
      );
      lines.list[lines.list.length - 1].update();
      lines.list[lines.list.length - 1].append();

      // creates the preview line
      //TODO: eliminare le vecchie preline che rimangono vive

      svg.addEventListener("mousemove", function prelineMove(e) {
        mouseX = e.pageX;
        mouseY = e.pageY;
        app.preline.update(thisCx, thisCy, mouseX, mouseY);
      });

      //saves the selected dots coordinates
      dots.selected.id = thisId;
      dots.selected.cx = thisCx;
      dots.selected.cy = thisCy;

      //removes the dot from the list of remaining dots
      for (i = 0; i < dots.left.length; i++) {
        if (dots.left[i] === thisId) {
          dots.left.splice(i, 1);
        }
      }

      if (dots.left.length == 0) {
        app.end(true);
      }
    } else {
      app.end(false);
    }
  };
}

////////////////
// lines group
////////////////

var lines = {
  list: []
};

////////////////
// dots group
////////////////

var dots = {};
dots.num = 20;
dots.list = [];
dots.start = 0;
dots.selected = {};
dots.selected.id = dots.start;
dots.left = [];
dots.preline;

////////////////
// app
////////////////

var app = {};

app.level = 4;

app.score = {};
app.score.number = 0;
app.score.el = document.getElementById("score");
app.score.update = function(score) {
  app.score.number += score;
  app.score.el.textContent = app.score.number;
};

app.score.reset = function() {
  app.score.number = 0;
  app.score.update(0);
};

app.results = function(points) {
  if (points == "reset") {
    sessionStorage.setItem("results", 0);
  } else {
    if (!sessionStorage.getItem("results")) {
      sessionStorage.setItem("results", points);
    } else {
      var newscore = parseInt(sessionStorage.getItem("results")) + points;
      sessionStorage.setItem("results", newscore);
    }
  }
};

app.launchScreen = function(lastScore, title, description, btnText) {
  app.launchScreen.el = document.getElementById("launch-screen");
  app.launchScreen.el.setAttribute("class", "is-visible");

  var launchScreenTitle = document.getElementById("launch-screen__title");
  launchScreenTitle.textContent = title;

  var launchScreenDescription = document.getElementById(
    "launch-screen__description"
  );
  launchScreenDescription.textContent = description;

  app.launchScreen.btn = document.getElementById("start-btn");
  app.launchScreen.btn.textContent = btnText;

  app.launchScreen.btn.addEventListener("click", function lauch() {
    app.launchScreen.el.setAttribute("class", "");
    app.start(app.level);
    app.launchScreen.btn.removeEventListener("click", lauch);
  });
};

app.preline = new Line(0, 0, 200, 200);
app.preline.setAttr("id", "preline");

app.start = function(dotsNum) {
  dots.num = dotsNum;

  for (i = 0; i < dots.num; i++) {
    var cx = getRandomArbitrary(10, screenW - 10);
    var cy = getRandomArbitrary(10, screenH - 10);

    dots.list[i] = new Dot(8, cx, cy);
    dots.list[i].setAttr("data-id", "id-" + i);
    dots.list[i].setAttr(
      "style", 
      "animation-delay:" + i / 10 + "s; transform-origin: " + cx + 'px ' + cy + 'px;');
    dots.list[i].update();
    dots.list[i].append();
    dots.left.push(i);

    if (i == dots.start) {
      dots.selected.cx = dots.list[dots.start].cx;
      dots.selected.cy = dots.list[dots.start].cy;
      dots.list[dots.start].setAttr("class", "dot dot--starting");
      dots.left.splice(i, 1);
    }

    // adds the preline

    app.preline.update(
      dots.selected.cx,
      dots.selected.cy,
      dots.selected.cx,
      dots.selected.cy
    );
    app.preline.append();

    svg.addEventListener("mousemove", function prelineMove(e) {
      mouseX = e.pageX;
      mouseY = e.pageY;
      app.preline.update(dots.selected.cx, dots.selected.cy, mouseX, mouseY);
    });
  }

  // sets starting point
  dots.list[dots.start].setAttr("data-selected", "true");
};

app.end = function(win) {
  if (win) {
    app.level += 4;
    app.results(app.score.number);
  } else {
    app.level = 4;
  }

  dots.list = [];
  dots.selected = {};
  dots.left.length = 0;
  svg.innerHTML = "";

  if (win) {
    app.launchScreen(
      app.score.number,
      "Well done!",
      "Your score is: " + sessionStorage.getItem("results") + ' The next level will be harder.',
      "PLAY NEXT LEVEL"
    );
  } else {
    app.launchScreen(
      0,
      "Game over!",
      "Your final score is: " + sessionStorage.getItem("results"),
      "PLAY AGAIN"
    );
    app.results("reset");
    app.score.reset();
  }
};

app.launchScreen(
  0,
  "Path finder",
  "Find the nearest yellow dot.",
  "PLAY"
);

            
          
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.
Loading ..................

Console