text: class Link{
      constructor(bodyA,bodyB){
          var lastLink = bodyA.body.bodies.length - 2;
          this.link = Constraint.create({
              bodyA : bodyA.body.bodies[lastLink],
              pointA : {x:0, y:0},
              bodyB : bodyB.body,
              pointB : {x:0, y:0},
              length : 10,
              stiffness : 0.8
          })
  
          World.add(world,this.link);
      }
  }