constructor() {

    this.x = 64;

    this.y = height / 2;

​

    this.gravity = 0.6;

    this.lift = -15;

    this.velocity = 1;

​

    this.color = [255, 255, 255];

    this.size = 32;

  }

​

  show() {

    fill(this.color);

    ellipse(this.x, this.y, this.size, this.size);

  }

  update() {

    // this.x = mouseX;

    // this.y = mouseY;

​

    this.velocity += this.gravity;

    this.velocity *= 0.9;

    // print(this.velocity);

    this.y += this.velocity;

​

    if (this.y > height) {

      this.y = height;

      this.velocity = 0;

    }

​

    if (this.y < 0) {

      this.y = 0;

      this.velocity = 0;

    }

  }

  up() {

    this.velocity += this.lift;

  }

  upWithSound(soundLevel) {

    print("upWithSound");

    let liftPower = map(soundLevel, 0, 1, 0, -50);

    this.velocity += liftPower;

  }

​

  hits(pipe) {

    if (this.y < pipe.top || this.y + this.size > pipe.bottom) {

      if (this.x > pipe.x && this.x < pipe.x + pipe.width) {

        return true;

      }

​

    } else {

      return false;

    }

  }

​

  hurt() {

    this.color = [255, 0, 0];

  }

​

  stable() {

    this.color = [255, 255, 255];

  }

}