Mine

#include <d3d9.h>
#include <d3dx9mesh.h>
#include <d3dx9tex.h>
#include <string>

#ifndef ENTITY
#define ENTITY

#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE)

class Entity
{
    private:
        LPDIRECT3DDEVICE9 GraphicsDevice; //graphics device to use
        LPD3DXMESH EntityMesh; //the mesh for our entity
        DWORD NumMaterials; //Number of materials
        LPD3DXBUFFER MaterialBuffer; //buffer to load our materials
        LPDIRECT3DTEXTURE9* MeshTextures; //an array of textures for our mesh
        D3DMATERIAL9* MeshMaterials; //an array of materials for our mesh
        D3DVERTEXELEMENT9 VertexArray [MAX_FVF_DECL_SIZE]; //Array of our verticies
    public:
        Entity(void);
        Entity(LPDIRECT3DDEVICE9 GraphicsDevice);
        void LoadModel(std::string filename);
        void Render();
        ~Entity(void);
};

#endif





#include <Entity.h>

#ifndef PLANET
#define PLANET

class Planet:public Entity
{
    private:
        
    public:
        Planet(void);
        ~Planet(void);
};

#endif