“class GenericModel的C++正向声明/缺少类名/继承.”

我偶然发现了一个继承问题。因此，我在3个单独的头中定义了3个类，如下所示：

GenericObject->ObjectGenericObject->LightObject

首先是继承的对象：

#ifndef GENERICMODEL_HPP
#define GENERICMODEL_HPP
#define NO_SDL_GLEXT
#define GLM_FORCE_RADIANS 
#include <GL/glew.h>//before opengl
#include <SDL2/SDL.h>
#include <iostream>
#include <stdlib.h>
#include <stdio.h>
#include <glm/glm.hpp>
#include <vector>
#include <glm/gtc/matrix_transform.hpp>
#include "GenericShader.hpp"
#include "BaseObject.hpp" 
#include "Scene.hpp"
#define FRAGMENT_SHADER 0
#define VERTEX_SHADER 1
class GenericShader;
class Scene;
class GenericModel: public BaseObject{
public:
    GenericModel();
    ~GenericModel();
    virtual void Render();
    bool LoadShaderProgram(char*,char*);
    void BindShaders(GenericShader *);
    void UpdatePosition(glm::vec3);
    void UpdateRotation(float,glm::vec3);
    void UpdateScale(glm::vec3);
    void UpdateMatrix();
    bool shadersLoaded;
    int scenePosNum = 0;
    GLuint programID;//for now
    GLuint vertexBuffer;
    glm::mat4 MVP;
    glm::mat4 modelMatrix;
    //Scene *scene;
protected:
    GenericShader *shaderObj= NULL;
    GLuint vaoID;
    Uint32 verticesCount;
    float angle; 
    glm::vec3 locationVector;
    glm::vec3 rotationVector;
    glm::vec3 scaleVector;
    Scene *scene;
};
#endif

第二：

#ifndef MODEL_HPP
#define MODEL_HPP

#include "GenericModel.hpp"
#include <libxml/parser.h>
#include <libxml/tree.h>
class GenericModel;
class Model : public GenericModel{
public:
    Model();
    ~Model();
    void Render();
    bool LoadModelOBJ(char *);
    bool LoadModelXML(char *);
    bool LoadTexture(char *);
private: 
    GLuint textureID;
    GLuint texture;
    bool modelLoaded;
    bool textureLoaded;
    GLuint textureBuffer;
    bool OpenOBJModel(char*, std::vector<glm::vec3> & , std::vector<glm::vec2> & , std::vector<glm::vec3> & );
    bool OpenXMLModel(char *filename, std::vector<glm::vec3> & vertOut, std::vector<glm::vec2> & uvOut, std::vector<glm::vec3> & normalOut);
};
#endif

第三：

#ifndef LIGHT_OBJECT_HPP
#define LIGHT_OBJECT_HPP
#include "GenericModel.hpp"
class GenericModel; //PROBLEM
class LightObject: public GenericModel {
public:
    LightObject();
    ~LightObject();
    void Render();
    glm::vec3 GetLight();
    void SetLight(glm::vec3);
private:
    glm::vec3 lightIntenzity;
};
#endif

当我试图编译它们时，我得到错误

LightObject.hp:9:27:错误：无效使用了不完整的类型"class GenericModel"类LightObject:公共GenericModel{^LightObject.hp:7:7:错误："class GenericModel"的正向声明类GenericModel；

如果我删除转发声明，则会出现新的错误：

LightObject.hpp:9:40:错误：在"｛"标记之前需要类名类LightObject:公共GenericModel｛

这让我很困惑，因为它和Model类并没有问题，这是用同样的方式完成的。包含的转发声明。有人能给我指正确的方向吗？提前感谢！（BTW基本对象只是ID）