shouldn't this work? | GameDev.net

Hi, I''m tying to read info from a text file to create an opengl 3d object (3d model)... each model can have more than one mesh, and thats where the problem is: - I have no problems reading the number of meshes available. - This is my read function:

  
for(int i=0; i<m_iNumMeshes; i++)
	{
		// Read Vertices

		fscanf(file, "    verts %d", &m_pMeshes->m_iNumVerts);
		log.LogWrite("Found vertice\n");
		m_pMeshes->m_pVert = new mdx_vertex_t[m_pMeshes->m_iNumVerts];
		for(int i=0; i<m_pMeshes->m_iNumVerts; i++)
		{
			mdx_vertex_t &v = m_pMeshes->m_pVert[i];
			fscanf(file, "     %f %f %f  %f %f %f  %f %f", &v.position.x, &v.position.y, &v.position.z,
														&v.normal.x, &v.normal.y, &v.normal.z,
														&v.texCoord.x, &v.texCoord.y);
		}

		// Read Faces

		fscanf(file, "    faces %d", &m_pMeshes->m_iNumFaces);
		log.LogWrite("Found face\n");
		m_pMeshes->m_pFace = new mdx_face_t[m_pMeshes->m_iNumFaces];
		for(int j=0; j<m_pMeshes->m_iNumFaces; j++)
		{
			mdx_face_t &f = m_pMeshes->m_pFace[j];
			fscanf(file, "     %d %d %d", &f.vertIndex[0], &f.vertIndex[1], &f.vertIndex[2]);
		}
	}

- This is my draw function:

  
for(int w=0; w<m_iNumMeshes; w++)
	{
		glColor3f(1.0, 1.0, 1.0);
		glTranslatef(0.0, 0.0, -5.0);
		glRotatef(xRot, 1.0, 0.0, 0.0);
		glRotatef(yRot, 0.0, 1.0, 0.0);
		glBegin(GL_TRIANGLES);
		for(int i=0; i<m_pMeshes->m_iNumFaces; i++)
		{
			for(int j=0; j<3; j++)
			{
				int vertIndex = m_pMeshes->m_pFace[i].vertIndex[j];
				glNormal3f(m_pMeshes->m_pVert[vertIndex].normal.x, m_pMeshes->m_pVert[vertIndex].normal.y, m_pMeshes->m_pVert[vertIndex].normal.z); 
				glVertex3f(m_pMeshes->m_pVert[vertIndex].position.x, m_pMeshes->m_pVert[vertIndex].position.y, m_pMeshes->m_pVert[vertIndex].position.z); 
			}
		}
		glEnd();
	}

and when trying to read something like this:

nummeshes 2
beginnode
  textures 1
   "C:\test.bmp"
    verts 24
     -1.0 -1.0 0.0  0.0 0.0 -1.0  0.0 0.0
     -1.0 1.0 0.0  0.0 0.0 -1.0  0.0 0.0
     1.0 1.0 0.0  0.0 0.0 -1.0  0.0 0.0
     1.0 -1.0 0.0  0.0 0.0 -1.0  0.0 0.0
     -1.0 -1.0 1.0  0.0 0.0 1.0  0.0 0.0
     1.0 -1.0 1.0  0.0 0.0 1.0  0.0 0.0
     1.0 1.0 1.0  0.0 0.0 1.0  0.0 0.0
     -1.0 1.0 1.0  0.0 0.0 1.0  0.0 0.0
     -1.0 -1.0 0.0  0.0 -1.0 0.0  0.0 0.0
     1.0 -1.0 0.0  0.0 -1.0 0.0  0.0 0.0
     1.0 -1.0 1.0  0.0 -1.0 0.0  0.0 0.0
     -1.0 -1.0 1.0  0.0 -1.0 0.0  0.0 0.0
     1.0 -1.0 0.0  1.0 0.0 0.0  0.0 0.0
     1.0 1.0 0.0  1.0 0.0 0.0  0.0 0.0
     1.0 1.0 1.0  1.0 0.0 0.0  0.0 0.0
     1.0 -1.0 1.0  1.0 0.0 0.0  0.0 0.0
     1.0 1.0 0.0  0.0 1.0 0.0  0.0 0.0
     -1.0 1.0 0.0  0.0 1.0 0.0  0.0 0.0
     -1.0 1.0 1.0  0.0 1.0 0.0  0.0 0.0
     1.0 1.0 1.0  0.0 1.0 0.0  0.0 0.0
     -1.0 1.0 0.0  -1.0 0.0 0.0  0.0 0.0
     -1.0 -1.0 0.0  -1.0 0.0 0.0  0.0 0.0
     -1.0 -1.0 1.0  -1.0 0.0 0.0  0.0 0.0
     -1.0 1.0 1.0  -1.0 0.0 0.0  0.0 0.0
    faces 12
     0 1 2
     2 3 0
     4 5 6
     6 7 4
     8 9 10
     10 11 8
     12 13 14
     14 15 12
     16 17 18
     18 19 16
     20 21 22
     22 23 20
endnode
beginnode
  textures 0
    verts 4
     -3.0 -3.0 0.0  0.0 0.0 -1.0  0.0 0.0
     -3.0 3.0 0.0  0.0 0.0 -1.0  0.0 0.0
     0.0 3.0 0.0  0.0 0.0 -1.0  0.0 0.0
     0.0 -3.0 0.0  0.0 0.0 -1.0  0.0 0.0
    faces 2
     0 1 2
     2 3 0
endnode

I get a runtime error, and If I debug it, I get an "Object reference not set to an instance of an object" in the glNormal3f line... Whats the prob? Thanks

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