const s = 2;  // speed

let persons = [];

let newX = [];

let newY = [];

​

this.focus();

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  ellipseMode(RADIUS);

  textAlign(CENTER, CENTER);

  textStyle(NORMAL);

  textSize(r);

  noStroke();

  for (let i = 0; i < 6; i++) { createPerson() }

}

​

function mousePressed() {

  let x = mouseX;

  let y = mouseY;

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

    if (persons[i].contains(x, y)) {

      persons.splice(i, 1);

      return;

    }

  }

  if (x > 0 && x < width && y > 0 && y < height) { createPerson(x, y) }

}

​

function draw() {

  background(0);

  proximity();

  coordCopy()

  for (let p of persons) {

    p.move();

    p.show();

  }

}

​

function proximity () {

  if (persons.length == 1) { newX[0] = persons[0].x; newY[0] = persons[0].y; return; }

​

  let ix, iy, jx, jy;

  let D, DW, DE, DN, DS, DNW, DNE, DSW, DSE;

  let minD, minX, minY, k;

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

    ix = persons[i].x;

    iy = persons[i].y;

    minD = 9999;

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

      jx = persons[j].x;

      jy = persons[j].y;

      if(i != j) {

​

        D = dist(ix, iy, jx, jy);

        if (D  < minD) { minD = D;  minX = jx; minY = jy; }

​

        DW = dist(ix, iy, jx - width, jy);

        if (DW < minD) { minD = DW; minX = jx - width; minY = jy; }

        DE = dist(ix, iy, jx + width, jy);

        if (DE < minD) { minD = DE; minX = jx + width; minY = jy; }

        DN = dist(ix, iy, jx, jy - height);

        if (DN < minD) { minD = DN; minX = jx; minY = jy - height; }

        DS = dist(ix, iy, jx, jy + height);

        if (DS < minD) { minD = DS; minX = jx; minY = jy + height; }

​

        DNW = dist(ix, iy, jx - width, jy - height);

        if (DNW < minD) { minD = DNW; minX = jx - width; minY = jy - height; }

        DNE = dist(ix, iy, jx + width, jy - height);

        if (DNE < minD) { minD = DNE; minX = jx + width; minY = jy - height; }

        DSW = dist(ix, iy, jx - width, jy + height);

        if (DSW < minD) { minD = DSW; minX = jx - width; minY = jy + height; }

        DSE = dist(ix, iy, jx + width, jy + height);

        if (DSE < minD) { minD = DSE; minX = jx + width; minY = jy + height; }

      }        

    }

    k = s / D + 1;

    newX[i] = minX - k * (minX - ix);

    newY[i] = minY - k * (minY - iy);

  }

}

​

function coordCopy() {

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

    persons[i].x = newX[i];

    persons[i].y = newY[i];

  }

}

​

function createPerson(x = 0, y = 0) {

  if (x === 0) { x = random(r, width  - r) }

  if (y === 0) { y = random(r, height - r) }

  let c = color(random(100, 255), random(100, 255), random(100, 255));

  let p = new Person(x, y, c);

  persons.push(p);

}

​

function keyPressed() {

  if (keyIsDown(ENTER)) {

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

      persons[i].x += random(-r, r);

      persons[i].y += random(-r, r);

    }

  }

  if (keyIsDown(RIGHT_ARROW)) {

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

      persons[i].x += r / 2;

    }

  }

  if (keyIsDown(LEFT_ARROW)) {

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

      persons[i].x -= r / 2;

    }

  }

  if (keyIsDown(UP_ARROW)) {

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

      persons[i].y -= r / 2;

    }

  }

  if (keyIsDown(DOWN_ARROW)) {

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

      persons[i].y += r / 2;

    }

  }

}

​