text: function Drop(){
    this.x = random(width);
    this.y = random(-500, -50);
    this.z = random(0, 20);
    this.len = map(this.z, 0, 20, 10, 20);
    this.speed = map(this.z, 0, 20, 1, 20);
  
    
    this.fall = function(){
      this.y = this.y + this.speed;
      var gravity = map(this.z, 0, 20, 0, 0.2);
      this.speed = this.speed + gravity;
      
      if (this.y > height){
        this.y = random(-200, -100);
        this.speed = map(this.z, 0, 20, 4, 10);
      }
    };
    
    this.show = function(){
      strokeWeight(map(this.z, 0, 20, 4, 10));
      stroke(138, 43, 226);
      line(this.x, this.y, this.x, this.y + this.len)
    };
  
  }
  