Trouble with OpenGL Game Programming book

Ekim_Gram · 2003-07-06T05:02:52

I''m finishing up chapter 2 and I''m doing the code with the rotation triangle. I''m using a pirated version of Microsoft Visual Studio 6 EE (i know...) and it''s not working. For those of you who don''t have the book; here''s the code: #define WIN32_LEAN_AND_MEAN // trim the excess fat from Windows ////// Includes #include <windows.h> // standard Windows app include #include <gl/gl.h> // standard OpenGL include #include <gl/glu.h> // OpenGL utilties #include <gl/glaux.h> // OpenGL auxiliary functions ////// Global Variables float angle = 0.0f; // current angle of the rotating triangle HDC g_HDC; // global device context bool fullScreen = false; // function to set the pixel format for the device context void SetupPixelFormat(HDC hDC) { int nPixelFormat; // our pixel format index static PIXELFORMATDESCRIPTOR pfd = { sizeof(PIXELFORMATDESCRIPTOR), // size of structure 1, // default version PFD_DRAW_TO_WINDOW | // window drawing support PFD_SUPPORT_OPENGL | // OpenGL support PFD_DOUBLEBUFFER, // double buffering support PFD_TYPE_RGBA, // RGBA color mode 32, // 32 bit color mode 0, 0, 0, 0, 0, 0, // ignore color bits, non-palettized mode 0, // no alpha buffer 0, // ignore shift bit 0, // no accumulation buffer 0, 0, 0, 0, // ignore accumulation bits 16, // 16 bit z-buffer size 0, // no stencil buffer 0, // no auxiliary buffer PFD_MAIN_PLANE, // main drawing plane 0, // reserved 0, 0, 0 }; // layer masks ignored nPixelFormat = ChoosePixelFormat(hDC, &pfd;; // choose best matching pixel format SetPixelFormat(hDC, nPixelFormat, &pfd;; // set pixel format to device context } // the Windows Procedure event handler LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { static HGLRC hRC; // rendering context static HDC hDC; // device context int width, height; // window width and height switch(message) { case WM_CREATE: // window is being created hDC = GetDC(hwnd); // get current window''s device context g_HDC = hDC; SetupPixelFormat(hDC); // call our pixel format setup function // create rendering context and make it current hRC = wglCreateContext(hDC); wglMakeCurrent(hDC, hRC); return 0; break; case WM_CLOSE: // windows is closing // deselect rendering context and delete it wglMakeCurrent(hDC, NULL); wglDeleteContext(hRC); // send WM_QUIT to message queue PostQuitMessage(0); return 0; break; case WM_SIZE: height = HIWORD(lParam); // retrieve width and height width = LOWORD(lParam); if (height==0) // don''t want a divide by zero { height=1; } glViewport(0, 0, width, height); // reset the viewport to new dimensions glMatrixMode(GL_PROJECTION); // set projection matrix current matrix glLoadIdentity(); // reset projection matrix // calculate aspect ratio of window gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,1.0f,1000.0f); glMatrixMode(GL_MODELVIEW); // set modelview matrix glLoadIdentity(); // reset modelview matrix return 0; break; default: break; } return (DefWindowProc(hwnd, message, wParam, lParam)); } // the main windows entry point int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd) { WNDCLASSEX windowClass; // window class HWND hwnd; // window handle MSG msg; // message bool done; // flag saying when our app is complete DWORD dwExStyle; // Window Extended Style DWORD dwStyle; // Window Style RECT windowRect; // temp var''s int width = 800; int height = 600; int bits = 32; fullScreen = FALSE; windowRect.left=(long)0; // Set Left Value To 0 windowRect.right=(long)width; // Set Right Value To Requested Width windowRect.top=(long)0; // Set Top Value To 0 windowRect.bottom=(long)height; // Set Bottom Value To Requested Height // fill out the window class structure windowClass.cbSize = sizeof(WNDCLASSEX); windowClass.style = CS_HREDRAW | CS_VREDRAW; windowClass.lpfnWndProc = WndProc; windowClass.cbClsExtra = 0; windowClass.cbWndExtra = 0; windowClass.hInstance = hInstance; windowClass.hIcon = LoadIcon(NULL, IDI_APPLICATION); // default icon windowClass.hCursor = LoadCursor(NULL, IDC_ARROW); // default arrow windowClass.hbrBackground = NULL; // don''t need background windowClass.lpszMenuName = NULL; // no menu windowClass.lpszClassName = "MyClass"; windowClass.hIconSm = LoadIcon(NULL, IDI_WINLOGO); // windows logo small icon // register the windows class if (!RegisterClassEx(&windowClass)) return 0; if (fullScreen) // fullscreen? { DEVMODE dmScreenSettings; // device mode memset(&dmScreenSettings,0,sizeof(dmScreenSettings)); dmScreenSettings.dmSize = sizeof(dmScreenSettings); dmScreenSettings.dmPelsWidth = width; // screen width dmScreenSettings.dmPelsHeight = height; // screen height dmScreenSettings.dmBitsPerPel = bits; // bits per pixel dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT; // if (ChangeDisplaySettings(&dmScreenSettings, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL) { // setting display mode failed, switch to windowed MessageBox(NULL, "Display mode failed", NULL, MB_OK); fullScreen=FALSE; } } if (fullScreen) // Are We Still In Fullscreen Mode? { dwExStyle=WS_EX_APPWINDOW; // Window Extended Style dwStyle=WS_POPUP; // Windows Style ShowCursor(FALSE); // Hide Mouse Pointer } else { dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE; // Window Extended Style dwStyle=WS_OVERLAPPEDWINDOW; // Windows Style } AdjustWindowRectEx(&windowRect, dwStyle, FALSE, dwExStyle); // Adjust Window To True Requested Size // class registered, so now create our window hwnd = CreateWindowEx(NULL, // extended style "MyClass", // class name "OpenGL Application", // app name dwStyle | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, 0, 0, // x,y coordinate windowRect.right - windowRect.left, windowRect.bottom - windowRect.top, // width, height NULL, // handle to parent NULL, // handle to menu hInstance, // application instance NULL); // no extra params // check if window creation failed (hwnd would equal NULL) if (!hwnd) return 0; ShowWindow(hwnd, SW_SHOW); // display the window UpdateWindow(hwnd); // update the window done = false; // intialize the loop condition variable // main message loop while (!done) { PeekMessage(&msg, hwnd, NULL, NULL, PM_REMOVE); if (msg.message == WM_QUIT) // do we receive a WM_QUIT message? { done = true; // if so, time to quit the application } else { // do rendering here glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear screen and depth buffer glLoadIdentity(); // reset modelview matrix angle = angle + 0.1f; // increase our rotation angle counter if (angle >= 360.0f) // if we''ve gone in a circle, reset counter angle = 0.0f; glTranslatef(0.0f,0.0f,-5.0f); // move back 5 units glRotatef(angle, 0.0f,0.0f,1.0f); // rotate along z-axis glColor3f(1.0f,0.0f,0.0f); // set color to red glBegin(GL_TRIANGLES); // draw the triangle glVertex3f(0.0f,0.0f,0.0f); glVertex3f(1.0f,0.0f,0.0f); glVertex3f(1.0f,1.0f,0.0f); glEnd(); SwapBuffers(g_HDC); // bring backbuffer to foreground TranslateMessage(&msg;; // translate and dispatch to event queue DispatchMessage(&msg;; } } if (fullScreen) { ChangeDisplaySettings(NULL,0); // If So Switch Back To The Desktop ShowCursor(TRUE); // Show Mouse Pointer } return msg.wParam; } Now I''m getting there errors: --------------------Configuration: Win32 - Win32 Debug-------------------- Compiling... file.cpp Linking... file.obj : error LNK2001: unresolved external symbol _gluPerspective@32 file.obj : error LNK2001: unresolved external symbol __imp__glLoadIdentity@0 file.obj : error LNK2001: unresolved external symbol __imp__glMatrixMode@4 file.obj : error LNK2001: unresolved external symbol __imp__glViewport@16 file.obj : error LNK2001: unresolved external symbol __imp__wglDeleteContext@4 file.obj : error LNK2001: unresolved external symbol __imp__wglMakeCurrent@8 file.obj : error LNK2001: unresolved external symbol __imp__wglCreateContext@4 file.obj : error LNK2001: unresolved external symbol __imp__glEnd@0 file.obj : error LNK2001: unresolved external symbol __imp__glVertex3f@12 file.obj : error LNK2001: unresolved external symbol __imp__glBegin@4 file.obj : error LNK2001: unresolved external symbol __imp__glColor3f@12 file.obj : error LNK2001: unresolved external symbol __imp__glRotatef@16 file.obj : error LNK2001: unresolved external symbol __imp__glTranslatef@12 file.obj : error LNK2001: unresolved external symbol __imp__glClear@4 Debug/Win32.exe : fatal error LNK1120: 14 unresolved externals Error executing link.exe. Win32.exe - 15 error(s), 0 warning(s) What''s going on? The project is a Win32 Application and I got what needs to be included into the header and the files are on my hd I hope - they were last time I checked. There''s no town drunk here, we all take turns.