let totalWalkers = 5;

let extraCanvas;

let slider;

let speed = 1;

let occupiedColors = [];

​

function setup() {

  createCanvas(500, 500);

  background(0);

  extraCanvas = createGraphics(width, height);

  extraCanvas.background(0);

  slider = createSlider(1, 1000, 1, 10);

  createP('Click the mouse to calculate the score for every walker.');

  createP('<= Speed of walkers').position(180,height-12);

  createWalkers();

}

​

function draw() {

  slider.input(() => speed = slider.value());

  for (let w of walkers) 

    w.move();

  image(extraCanvas, 0, 0);

  walkerInfo();

  checkCollision();

}

​

function inScreen(x, y) {

  return (x > 10 &&

    x < width - 10 &&

    y > 20 &&

    y < height - 10);

}

​

function createWalkers() {

 let x, y, r, g ,b ,c;

  for (let i = 0; i < totalWalkers; i++) {

    x = random(20, width - 20);

    y = random(20, height - 20);

    r = floor(random(256));

    g = floor(random(256));

    b = floor(random(256));

    c = color(r, g, b);

​

    for (let i = 0; i < occupiedColors.length; i++) {

      let col = occupiedColors[i];

      while (red(col) == red(c) && green(col) == green(c) && blue(col) == blue(c)) {

        r = floor(random(256));

        g = floor(random(256));

        b = floor(random(256));

        c = color(r, g, b);

      }

    }

    occupiedColors.push(c);

    walkers[i] = new Walker(x, y, c);

  }

}

​

function walkerInfo() {

  for (let w of walkers) {

    noFill();

    stroke(255);

    strokeWeight(2);

    ellipse(w.pos.x, w.pos.y, 10, 10);

    fill(255);

    stroke(255);

    strokeWeight(1);

    text(nfc(w.score, 2), w.pos.x - 5, w.pos.y - 10);

  }

}

​

function checkCollision() {

for (let i = 0; i < walkers.length; i++) {

    for (let j = 0; j < walkers.length; j++) {

      if (i != j && walkers[i].pos.x == walkers[j].pos.x && walkers[i].pos.y == walkers[j].pos.y) {

        walkers[i].newWalker(walkers[j]);

      }

    }

  }

}

​

function mousePressed() {

  if (inScreen(mouseX, mouseY)) {

    for(let w of walkers) {

      w.evaluateScore();

    }

  }

}