命名空间(Ogre)没有PlaneMovement的定义.我也尝试了一个不同的名字,但仍然是同样的错误.

#include <Ogre.h>

using namespace Ogre;

class PlaneMovement
{
public:
    PlaneMovement(Degree startingAngle,Real velocity = 2,Real gravity = 2);
    Vector2 updateMovement(const FrameEvent& evt);
private:
    Degree currentAngle;
    Real currentVelocityX;
    Real currentVelocityY;
    Real gravity;
    bool top;
};