Question

你好，我有一个Ball课程。

 class Ball: public Pang::particle {
private:
    double radio;
    double rcolor, gcolor, bcolor; // Range 0.0-1.0 Color (given in RGB space)

继承自粒子：

    class particle {

protected:

  double mass;
  vector3 position;
  vector3 velocity;

  vector3 acceleration;
  vector3 forceAccumulator;

  int state;
  double time_remaining;


public:

  particle();
  particle(const particle &rhs)
  {
    mass=rhs.mass;
    position = rhs.position;
    velocity = rhs.velocity;
    acceleration = rhs.acceleration;
    forceAccumulator = rhs.forceAccumulator;
    state = rhs.state;
    time_remaining = rhs.time_remaining;

  }

所以我怀疑在这里我有一个pangScenario类：

    namespace Pang {

class PangScenario {
    friend class ReflexAgentAI;
    friend class SimulationAI;
private:

    //Attributes are:Four planes, each one representing a plane ( scenario margin). el valor de position
    //Plane top;
    Plane bottomBorder;
    Plane leftBorder;
    Plane rightBorder;

    double limitPlane;

    //A ball positioned on it.
    //Ball scenarioBall;
    vector<Ball> playingBalls;
    character* characterPlayerOne;
    character* characterPlayerTwo;
    Ball* projectilePlayerOne;
    Ball* projectilePlayerTwo;
    double lastShotPlayerOne;
    double lastShotPlayerTwo;

    double lastDeadPlayerOne;
    double lastDeadPlayerTwo;

    int scorePlayerOne;
    int scorePlayerTwo;
    int livesPlayerOne;
    int livesPlayerTwo;
    int numberVictoriesPlayerOne;
    int numberVictoriesPlayerTwo;
    int numberTies;

    double widthGameField; // in meters
    double heightGameField; // in meters

    //friend ReflexAgentAI;

public:
    PangScenario();
    PangScenario(double width, double height);
    PangScenario(const PangScenario &rhs);
    virtual ~PangScenario()
    {
        if (projectilePlayerOne) delete projectilePlayerOne;
        if (projectilePlayerTwo) delete projectilePlayerTwo;
        if (characterPlayerOne) delete characterPlayerOne;
        if (characterPlayerTwo) delete characterPlayerTwo;
        //delete playingBalls;
    }

因此，当我在PangScenario中使用向量时，是否需要在PangScenario的析构函数中向向量playBalls添加析构函数？如果是这样我该怎么办？

类似的东西：

   for(int i=0 ; i < playingBalls.size(); ++i) {
  //pd = *it;
  playingBalls.erase(i); or delete playingBalls[i];
}

也许很简单：playingBalls.clear();在PangScenario

的析构函数内就足够了

提前致谢

Answer 1

您无需破坏vector。它是一个对象，而不是指向对象的指针，因此您不负责清理它。当PangScenario类的实例超出范围时，其所有成员变量都将被销毁。

如果您有vector<Ball> *，那么您需要关注delete - 为您分配的任何内存。

最后，您也不需要clear向量。 vector自己的析构函数将负责清理自己。

与传染媒介的类破坏者作为成员

1 个答案: