My first attempt

Pacman-snake V1

PVector target, loc, vel;
PVector[] points;
float ease = 0.3;
boolean easing = true;
int q, w, num = 150;
int[] vals;

void setup() {
  size(900, 900, P2D);
  noStroke();
  points = new PVector[num];
  for (int i = 0; i < num; i++) {
    points[i] = new PVector(width/2, height/2);
  }
}

void draw() {
  background(#222C32);
  noStroke();
  
  loc = new PVector(width/2,height/2);
  vel = new PVector();
  target = new PVector(mouseX,mouseY);
    for(int i = 0; i < num; i++) {
      loc = points[i];
      PVector distance = PVector.sub(target, loc); 
      vel = PVector.mult(distance, ease);
      loc.add(vel);
      target = loc;
      fill(255-i*2, 220-i*1, 120-i*0.2);
      ellipse(loc.x, loc.y, num-i, num-i);
  }
}