也许完成了寻路

car.cpp

@@ -1,7 +1,10 @@
 #include "car.h"
 
 
-Car::Car(QGraphicsItem *parent, int dir, Car::Color color) : QGraphicsPixmapItem(parent)
+Car::Car(QGraphicsItem *parent, int dir, Car::Color color) :
+    QGraphicsPixmapItem(parent),
+    posAni(new QPropertyAnimation(this,"m_pos")),
+    m_target(PathPoint(this->pos(),this->rotation()))
 {
     m_pos = this->pos();
     this->setRotation(dir);
@@ -25,6 +28,7 @@ Car::Car(QGraphicsItem *parent, int dir, Car::Color color) : QGraphicsPixmapItem
     m_pic = m_pic.scaled(M_WID, M_LEN);
     this->setPixmap(m_pic);
     setTransformOriginPoint(M_WID/2, M_LEN/2);  //设置旋转中心
+    connect(posAni,QPropertyAnimation::finished,this,followPath);
 }
 
 void Car::Forward(qreal vel)
@@ -75,6 +79,39 @@ void Car::turnRight(int r, double ang)
     Rotate(ang);
 }
 
+void Car::setPath(Path &path)
+{
+   m_path = path;
+}
+
+void Car::moveTo(QPointF target)
+{
+    posAni->setDuration(1000);
+    posAni->setEndValue(target);
+    posAni->start();
+}
+
+void Car::followPath()
+{
+    setRotation(m_target.dir);
+    if(m_path.isEmpty())
+    {
+        m_target = m_path.getNext();
+        moveTo(m_target.point);
+    }
+}
+
+QPointF Car::getmPos()
+{
+    return this->pos();
+}
+
+void Car::setmPos(QPointF pos)
+{
+    this->setPos(pos);
+    this->m_pos = pos;
+}
+
 Car::Color Car::getColor()
 {
     return this->m_color;

car.h

@@ -6,16 +6,22 @@
 #include <QString>
 #include <QPoint>
 #include <QtMath>
+#include <QPropertyAnimation>
+#include "path.h"
 
 //车身长宽
 #define M_LEN   (200)
 #define M_WID   (130)
 
-class Car : public QGraphicsPixmapItem
+class Car : public QObject, public QGraphicsPixmapItem
 {
+    Q_OBJECT
+    Q_PROPERTY(QPointF m_pos READ getmPos WRITE setmPos)
+    Q_PROPERTY(int m_dir READ getDir WRITE setRotation)
 public:
     enum Color { Pink, Red, Yellow, RANDOM };
     explicit Car(QGraphicsItem *parent = Q_NULLPTR, int dir = 0, Car::Color color = RANDOM);
+    //基础移动
     void Forward(qreal vel = 3);    //前进
     void Backward(qreal vel = 3);   //后退
     void moveLeft(qreal vel = 3);   //向左平移
@@ -23,15 +29,29 @@ public:
     void Rotate(qreal ang = 30);    //原地旋转
     void turnLeft(int r, double ang);  //左转
     void turnRight(int r, double ang); //右转
+    void setPath(Path &path);
+
+    //动画
+    void moveTo(QPointF target);
+    void followPath();
+
+    //为了Property
+    QPointF getmPos();
+    void    setmPos(QPointF pos);
 
     Color getColor();
     qreal getDir();
 
+    QPropertyAnimation *posAni;
+
 private:
-    Color m_color;      //车身颜色 N为0， 顺时针递增
+    Color   m_color;      //车身颜色 N为0， 顺时针递增
     QPixmap m_pic;
     QString m_number;
-    QPointF  m_pos;
+    QPointF m_pos;
+    qreal   m_dir;
+    Path    m_path;
+    PathPoint m_target;
 
 };
 

path.cpp

@@ -37,3 +37,9 @@ int Path::pointsCount()
     return path.length();
 }
 
+PathPoint &Path::getNext()
+{
+    PathPoint &tmp = path.first();
+    path.removeFirst();
+    return tmp;
+}

path.h

@@ -34,10 +34,12 @@ public:
     void addPoint(const PathPoint &point);
     bool isEmpty();
     int pointsCount();
+    PathPoint &getNext();
 
 private:
     QList<PathPoint> path;
     int len;
+    int i;
 };
 
 #endif // PATH_H