Vehicle Model

#include <assert.h>
#include <cmath>

// TODO: Define PI
#define PI 3.14159

// TODO: Declare abstract class VehicleModel
class VehicleModel {
  // TODO: Declare virtual function Move()
  virtual void Move(double v, double phi) = 0;
};

// TODO: Derive class ParticleModel from VehicleModel
class ParticleModel : public VehicleModel {
public:
  // TODO: Override the Move() function
  void Move(double v, double phi) override {
    theta += phi;
    x += v * cos(theta);
    y += v * sin(theta);
  }
  // TODO: Define x, y, and theta
  double x = 0;
  double y = 0;
  double theta = 0;
};

// TODO: Derive class BicycleModel from ParticleModel
class BicycleModel : public ParticleModel {
public:
  // TODO: Override the Move() function
  void Move(double v, double phi) override {
    theta += v / L * tan(phi);
    x += v * cos(theta);
    y += v * sin(theta);
  }
  // TODO: Define L
  double L = 1;
};

// TODO: Pass the tests
int main() {
  // Test function overriding
  ParticleModel particle;
  BicycleModel bicycle;
  particle.Move(10, PI / 9);
  bicycle.Move(10, PI / 9);
  assert(particle.x != bicycle.x);
  assert(particle.y != bicycle.y);
  assert(particle.theta != bicycle.theta);
}