Really Need Help With My Opengl Camera!!!!

I'm currently working on a open-source game engine/application, and am having trouble with the camera movment

here is a link to the download the current code: http://www.freewebs.com/psychopathpr...ychoEngine.zip

basicly, the triangle moves slow while on the grid (which for some reason wont display properly)...when moving backward, the triangle moves up like in 2d while on the grid, until it's off the top blue line....thats when it moves fast, and it shrinks (as if to move into the distance, in 3d)...for moving forward, when the triangle leaves the bottom blue line, it simply dissapears....dosn't get bigger (like you would expect it to do since backwards it works)
so....the questions:

-why dosn't it work properly while on the grid??
-why does it go so fast when off the grid?
-why does it dissapear, when it leaves the grid when moving forward?
-why does it seem to work when moving backwards (when it leaves the grid)?

i just can't get it to work!? so if anyone can help it would be REALLY great!!!!!!

--EDIT--
the link dosn't seem to work or display properly so..after:
www.freewebs.com/

its then:
psychopathproductions/PsychoEngine.zip

-psychopath

not found, even if i remove the ] at the end

EDIT:

Code:

gluLookAt(gl_Camera.C_vPosition.x, gl_Camera.C_vPosition.y, gl_Camera.C_vPosition.z, gl_Camera.C_vView.x, gl_Camera.C_vView.y, gl_Camera.C_vView.z, gl_Camera.C_vUpVector.x, gl_Camera.C_vUpVector.y, gl_Camera.C_vUpVector.z);

the second vector you give is actually the normalized view plus position, not just the view. That is, in all likelihood, your problem.

Your code does not work, I downloaded an older version, it just crashes on mscv (after I tried including all libs and stuff).

heh...you posted while i was editing so i'll just quote it again here :P

the link dosn't seem to work or display properly so..after:
www.freewebs.com/

its then:
psychopathproductions/PsychoEngine.zip

hmm....grr...i still can't get it to work!?

--EDIT--
ok...i'll just post the most recent code:

mainprog.cpp

Code:

/* Name: PsychoEngine Author: Daniel Cook Description: Game Creation Studio Date: NULL Copyright: 2004 License: This software is provided 'as-is' without warranty of any kind. This software is provided with an 'Open-Source' license, to be used and distributed freely, but under NO circumstances is this software to be sold by persons other than members/representitves of PsychopathProductions with the permission of their superior(s). */ // Include files #include <windows.h> #include <gl/gl.h> #include <gl/glu.h> #include <gl/glut.h> #include <math.h> #include "include.h" //end include files //set-up camera vectors float PositionX = 0; float PositionY = 0; float PositionZ = 0; float ViewX = 0; float ViewY = 1; float ViewZ = 8; float UpX = 0; float UpY = 0; float UpZ = 1; float VectorX; float VectorY; float VectorZ; //end camera vector set-up //CCamera gl_Camera; HWND edit_box = NULL; //edit window handle // Function Declarations LRESULT CALLBACK WndProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam ); //'define' the winproc call VOID EnableOpenGL( HWND edit_box, HDC * hDC, HGLRC * hRC ); //'define' the OpenGL enable function call VOID DisableOpenGL( HWND edit_box, HDC hDC, HGLRC hRC ); //'define' the OpenGL disable function call // WinMain int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int iCmdShow ) { WNDCLASS wc; //main window class WNDCLASS ed; //edit window class WNDCLASS mp; //model preview class HWND hwnd; //main window handle HDC hdc; //windows device context HGLRC gl_hrc;//OGL device context MSG msg; //message handle BOOL bQuit = FALSE; float theta = 0.0f; //gl_Camera.PositionCamera(0, 0.0f, 0, 0, 1.0f, 0.5, 0, 0, 1); // register window class wc.style = NULL; //define window style wc.lpfnWndProc = WndProc; //define the winproc wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInstance; //define the HINSTANCE wc.hIcon = LoadIcon( NULL, IDI_APPLICATION ); //set the icon wc.hCursor = LoadCursor( NULL, IDC_ARROW ); //set the cursor wc.hbrBackground = (HBRUSH)GetStockObject( GRAY_BRUSH ); //set the main window color wc.lpszMenuName = "MAINMENU"; //menu name wc.lpszClassName = "PsychoEngine"; //window class name RegisterClass( &wc ); //regester the class //regester edit class (same format as above :Þ) ed.style = CS_OWNDC; ed.lpfnWndProc = WndProc; ed.cbClsExtra = 0; ed.cbWndExtra = 0; ed.hInstance = hInstance; ed.hIcon = LoadIcon( NULL, IDI_APPLICATION ); ed.hCursor = LoadCursor( NULL, IDC_ARROW ); ed.hbrBackground = (HBRUSH)GetStockObject( BLACK_BRUSH ); ed.lpszMenuName = NULL; ed.lpszClassName = "EDIT"; RegisterClass( &ed ); //regester model preview class (same format as above :Þ mp.style = CS_OWNDC; mp.lpfnWndProc = WndProc; mp.cbClsExtra = 0; mp.cbWndExtra = 0; mp.hInstance = hInstance; mp.hIcon = LoadIcon( NULL, IDI_APPLICATION ); mp.hCursor = LoadCursor( NULL, IDC_ARROW ); mp.hbrBackground = (HBRUSH)GetStockObject( BLACK_BRUSH ); mp.lpszMenuName = NULL; mp.lpszClassName = "MODEL"; RegisterClass( &mp ); // create main window hwnd = CreateWindow( "PsychoEngine", "PsychoEngine | PsychopathProductions", //class, caption text WS_TILEDWINDOW | WS_POPUPWINDOW | WS_VISIBLE, //style 0, 0, 800, 570, //x,y,width,height NULL, NULL, hInstance, NULL ); HWND edit_box = NULL; //define edit_box handle HWND model_box = NULL; //define model preview handle LPARAM lParam; RECT rect; GetClientRect(hwnd,&rect); //set up and create editbox edit_box = CreateWindow("EDIT", "Edit Window",WS_CHILD | WS_CAPTION | WS_VISIBLE, 0, 0, 600, 516, hwnd, NULL, ((LPCREATESTRUCT)lParam)->hInstance, NULL); //setup and create model preview box model_box = CreateWindow("MODEL", "Model Preview",WS_CHILD | WS_CAPTION | WS_VISIBLE, 600, 338, 192, 178, hwnd, NULL, ((LPCREATESTRUCT)lParam)->hInstance, NULL); //draw buttons HWND button; button = CreateWindow("BUTTON", "NPC's", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 616, 30, 64, 24, hwnd,(HMENU) 10, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); button = CreateWindow("BUTTON", "Player", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 708, 30, 64, 24, hwnd, (HMENU) 20, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); button = CreateWindow("BUTTON", "World Options", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 646, 58, 98, 24, hwnd, (HMENU) 30, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); button = CreateWindow("BUTTON", "Lighting", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 616, 86, 64, 24, hwnd, (HMENU) 40, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); button = CreateWindow("BUTTON", "Textures", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 708, 86, 64, 24, hwnd, (HMENU) 50, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); button = CreateWindow("BUTTON", "Weapons/Projectiles", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 620, 114, 148, 24, hwnd, (HMENU) 60, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); button = CreateWindow("BUTTON", "Attributes", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 616, 142, 64, 24, hwnd, (HMENU) 70, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); button = CreateWindow("BUTTON", "Camera", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 708, 142, 64, 24, hwnd, (HMENU) 80, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); button = CreateWindow("BUTTON", "Insert Brush", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 606, 184, 80, 24, hwnd, (HMENU) 90, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); button = CreateWindow("BUTTON", "Insert Entity", WS_VISIBLE |WS_CHILD | BS_PUSHBUTTON, 708, 184, 80, 24, hwnd, (HMENU) 100, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); // enable OpenGL for the edit window EnableOpenGL( edit_box, &hdc, &gl_hrc ); // program main loop while ( !bQuit ) { // check for messages if ( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) ) { // handle or dispatch messages if ( msg.message == WM_QUIT ) { bQuit = TRUE; } else { TranslateMessage( &msg ); DispatchMessage( &msg ); } } else { void RenderScene(); { int i=0; glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer glLoadIdentity(); // Reset The matrix // OpenGL animation code gluLookAt(PositionX, PositionY, PositionZ, ViewX, ViewY, ViewZ, UpX, UpY, UpZ); glBegin (GL_TRIANGLES); // This is our BEGIN to draw glColor3ub(255, 0, 0); // Make the top vertex RED glVertex3f(0, -0.5, 0); // Here is the top point of the triangle glColor3ub(0, 255, 0); // Make the left vertex GREEN glVertex3f(-0.5, 0, 0); // Here is the left point of the triangle glColor3ub(0, 0, 255); // Make the right vertex BLUE glVertex3f(0.5, 0, 0); // Here is the right point of the triangle glEnd(); for(float i = -50; i <= 50; i += 1) { // Start drawing some lines glBegin(GL_LINES); // Do the horizontal lines (along the X) glVertex3f(-50, 0, i); glVertex3f(50, 0, i); // Do the vertical lines (along the Z) glVertex3f(i, 0, -50); glVertex3f(i, 0, 50); // Stop drawing lines glEnd(); } SwapBuffers( hdc ); } } } // shutdown OpenGL DisableOpenGL( hwnd, hdc, gl_hrc ); // destroy the window explicitly DestroyWindow( hwnd ); return msg.wParam; } // Window Procedure LRESULT CALLBACK WndProc( HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam ) { HDC hdc; //define the hDC static TEXTMETRIC textInfo; //define the textmetric char szSTRING1[]="Menu"; //string 1 char szSTRING2[]="____________________"; //string2 PAINTSTRUCT paintStruct; //define the PAINTSTRUCT hdc=NULL; switch ( message ) { case WM_CREATE: break; case WM_PAINT: hdc = BeginPaint(hwnd, &paintStruct); //begin paint SetTextColor(hdc, RGB(0, 0, 0)); //set text color SetBkColor(hdc , RGB(128, 128, 128)); //set background color OF THE TEXT TextOut(hdc, 676, 8, (szSTRING1), strlen(szSTRING1)); //put out string1 TextOut(hdc, 616, 156, (szSTRING2), strlen(szSTRING2)); //put out string2 EndPaint(hwnd, &paintStruct); //end paint break; case WM_CLOSE: if(MessageBox (NULL, "Are you sure you want to close the program?\nAll un-saved data will be lost." , "Exiting...", 0 + MB_YESNO + MB_DEFBUTTON2 + MB_ICONQUESTION)==IDYES) { PostQuitMessage( 0 ); } break; return 0; case WM_DESTROY: break; return 0; case WM_KEYDOWN: switch ( wparam ) { case VK_UP: VectorX = ViewX - PositionX; VectorY = ViewY - PositionY; VectorZ = ViewZ - PositionZ; PositionX += VectorX * speed; PositionZ += VectorZ * speed; ViewX += VectorX * speed; ViewZ += VectorZ * speed; void RenderScene(); //render the scene after movement break; case VK_DOWN: VectorX = ViewX - PositionX; VectorY = ViewY - PositionY; VectorZ = ViewZ - PositionZ; PositionX += VectorX * -speed; PositionZ += VectorZ * -speed; ViewX += VectorX * -speed; ViewZ += VectorZ * -speed; void RenderScene(); //render the scene after movement break; } break; case WM_COMMAND: //buttons WORD wID,wNotify; wID=LOWORD(wparam); wNotify=HIWORD(wparam); if (lparam) { //if a button was clicked if (wNotify==BN_CLICKED) { //if a buttons id was clicked if (wID==10) { MessageBox (NULL, "it works" , ":)", 0); } if (wID==20) { MessageBox (NULL, "it works" , ":)", 0); } if (wID==30) { MessageBox (NULL, "it works" , ":)", 0); } if (wID==40) { MessageBox (NULL, "it works" , ":)", 0); } if (wID==50) { MessageBox (NULL, "it works" , ":)", 0); } if (wID==60) { MessageBox (NULL, "it works" , ":)", 0); } if (wID==70) { MessageBox (NULL, "it works" , ":)", 0); } if (wID==80) { MessageBox (NULL, "it works" , ":)", 0); } if (wID==90) { MessageBox (NULL, "it works" , ":)", 0); } if (wID==100) { MessageBox (NULL, "it works" , ":)", 0); } } } //end buttons return 0; default: return DefWindowProc( hwnd, message, wparam, lparam ); } } // Enable OpenGL VOID EnableOpenGL( HWND edit_box, HDC * hdc, HGLRC * gl_hrc ) { PIXELFORMATDESCRIPTOR pfd; int iFormat; // get the device context (DC) *hdc = GetDC( edit_box ); // set the pixel format for the DC ZeroMemory( &pfd, sizeof( pfd ) ); pfd.nSize = sizeof( pfd ); pfd.nVersion = 1; pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER; //GL flags pfd.iPixelType = PFD_TYPE_RGBA; //pixel type pfd.cColorBits = COLOR_DEPTH; //color depth pfd.cDepthBits = SCREEN_DEPTH; //screen depth pfd.iLayerType = PFD_MAIN_PLANE; iFormat = ChoosePixelFormat( *hdc, &pfd ); //choose the best pixel format SetPixelFormat( *hdc, iFormat, &pfd ); //set the pixel format // create and enable the render context (RC) glViewport(0,0,0,1); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(45.0f,0/1, 1.0f, 150.0f); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); *gl_hrc = wglCreateContext( *hdc ); wglMakeCurrent( *hdc, *gl_hrc ); } // Disable OpenGL VOID DisableOpenGL( HWND edit_box, HDC hdc, HGLRC gl_hrc ) { wglMakeCurrent( NULL, NULL ); wglDeleteContext( gl_hrc ); ReleaseDC( edit_box, hdc ); //release from the drive context }

defs.h

Code:

#define SCREEN_DEPTH 32 //define the screen depth #define COLOR_DEPTH 32 //define the color depth #define speed 0.0013f //define the camera 'walk' speed

include.h

Code:

#include <gl/glut.h> #include "camera.h" #include "defs.h" #include "menu.h"

menu.h

Code:

#define ID_OPEN 100 #define ID_SAVE 200 #define ID_16DEPTH 300 #define ID_32DEPTH 400 #define ID_16COLOR 500 #define ID_32COLOR 600 #define ID_ABOUT 700

iv'e taken out the camera and vector class all togeather, since it really isn't that necessary, and because it seems to work better (for me) with out it.

-psychopath

:(.....can anyone help??

why dont you pack up the current source in a .zip along with an .exe so we can see your problem. (or is your link updated with current source and exe?)

i am going to get kicked off of the site again, here's my contact info:

AIM: OpenGLProgrammer

email: [email protected]

I'm confident I can help you with this, just re-send the current exe and source

not sure why you are/did get kicked off (theres a reason i'm sure, that I don't know about ;]).....anyway iv'e sent an e-mail with the code attached.

I downloaded the zip and i ran it but it crashes, I also updated the code, and it does not compile, so I added some compiler directives to make sure that the thing wasn't redefining some things, sure enough there are various errors...this is exactly what you posted, I am under visual studio 6

it could honestly be so many things and i have so many possible suggestions but it needs to be narrowed down or i need something to play with. sorry .

it works perfectly for me....just dosn't do what it's supposed to.......i'll try re-uploading the zip momentarily

I don't think it will do any good, I think it's because I'm using a different compiler.

hmmm....i'll try anyway:

http://www.freewebs.com/psychopathpr...ychoEngine.zip

sigh....link is still messed, so just right-click and click 'copy url location' and paste it in the address bar ;]

This is too weird...I can build that, but when I run it, it just plain crashes!

i dunno.......works for me!?