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Quellcode

Richtungsvektor(cos(alpha), cos(alpha))

Quellcode

sin(alpha + pi/2) = cos(alpha)

Quellcode

Richtungsvektor(cos(alpha), cos(alpha))

C-/C++-Quelltext

class CAuto
{
public:

  static const float MAX_SPEED = 20.0f; // Speed in EpS (Einheit pro Sekunde)

  static const float MAX_ACCEL = 0.5f; // Maximale Beschleunigung

  static const float TURN_SPEED = PI / 5.0f; // 10 Sekunden für komplette Rotation


  Vec2d _direction (0.0f, 1.0f); // Start in Richtung y

  Vec2d _location (0.0f, 0.0f); // Start im Ursprung

  float _speed = 0.0f; // Aktuelle Geschwindingkeit


  void Move (float time) { _location += time * _speed * _direction; }

  void OnTurnLeft (float time)
  {
    float angle = TURN_SPEED * time;
    _direction = MatrixRotate2d (-angle) * _direction;
  }

  void OnTurnRight (float time)
  {
    float angle = TURN_SPEED * time;
    _direction = MatrixRotate2d (angle) * _direction;
  }

  void OnAccelerate (float time)
  {
    _speed = min (MAX_SPEED, _speed + time * MAX_ACCEL);
  }

  void OnDecelerate (float time)
  {
    _speed = max (-MAX_SPEED, _speed - time * MAX_ACCEL);
  }

  void OnNeutralGas (float time)
  {
    if (_speed < 0.0f)
    {
      OnAccelerate (time);
      _speed = min (0.0f, _speed);
    }
    else
    {
      OnDecelerate (time);
      _speed = max (0.0f, _speed);
    }
  }
};

MatrixRotate2d (angle)
{
  // Rotation im Uhrzeigersinn mit Winkel "angle", Indices [x][y]

  _m[0][0] =  cos (angle); _m[1][0] = sin (angle);
  _m[0][1] = -sin (angle); _m[1][1] = cos (angle);
}