code: func (p *player) RotateRight() {
  	p.angle++
  	if maxAngle <= p.angle {
  		p.angle -= maxAngle
  	}
  	p.lean++
  	if maxLean < p.lean {
  		p.lean = maxLean
  	}
  }
docs: // RotateRight rotates the player p in the right direction.