Help with problem on keyboard input

Watever · 2008-04-03T21:05:02

can someone plz help me with my code.....im still a noob to opengl so dont call me an idiot plz.... ok i am trying to make a little game where an enemy shoots at you and you dodge the bullets until the end of a level.... except when i try to make the player move the enemy moves too!! and that wouldnt work... so can someone plz help solve this problem??? and i dont know how to make the enemy shoot at the player here is code... #include <windows.h> #include <math.h> #include <stdio.h> #include <gl.h> #include <glu.h> //OpenGL Extension Header File #include <glaux.h> //OpenGL Image and Texture Code HGLRC hRC = NULL; //Rendering Context HDC hDC = NULL; //Device Context Connects to the Graphic Interface HWND hWnd = NULL; //Handles Everything HINSTANCE hInstance; //Actually Creates Everything Visibally bool keys[256]; //Used to Handle KeyBoard Activity bool active = true; //is the gl active? bool fullscreen = true; //is the screen full? bool masking=true; bool scene; bool mp; bool sp; GLuint texture[9]; GLuint loop; int level = 1; int dlevel = level; GLfloat roll; struct object // Create A Structure For Our Player { float fx, fy,fz,spin; float x, y,z; char name; int life; int lives; bool bs; bool right; bool left; }; struct object player; struct object enemy[8]; struct object bullet; struct object boss; LRESULT CALLBACK WndProc(HWND , UINT , WPARAM , LPARAM); AUX_RGBImageRec *LoadBMP(char *Filename) { FILE *File=NULL; if (!Filename) { return NULL; } File=fopen(Filename,"r"); if (File) { fclose(File); return auxDIBImageLoad(Filename); } return NULL; } int LoadGLTextures() { int Status=false; AUX_RGBImageRec *TextureImage[9]; memset(TextureImage,0,sizeof(void *)*9); if ((TextureImage[0] = LoadBMP("Data/mask2.bmp")) && (TextureImage[1] = LoadBMP("Data/mask1.bmp")) && (TextureImage[2] = LoadBMP("Data/image1.bmp")) && (TextureImage[3] = LoadBMP("Data/Back.bmp")) && (TextureImage[4] = LoadBMP("Data/image2.bmp")) && (TextureImage[5] = LoadBMP("Data/enemy.bmp")) && (TextureImage[6] = LoadBMP("Data/eForce.bmp")) && (TextureImage[7] = LoadBMP("Data/eBullet.bmp")) && (TextureImage[8] = LoadBMP("Data/mask3.bmp"))) { Status = true; glGenTextures(9,&texture[0]); for (loop=0;loop<9;loop++) { glBindTexture(GL_TEXTURE_2D,texture[loop]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexImage2D(GL_TEXTURE_2D,0,3,TextureImage[loop]->sizeX,TextureImage[loop]->sizeY,0,GL_RGB,GL_UNSIGNED_BYTE,TextureImage[loop]->data); } } for (loop=0;loop<9;loop++) { if (TextureImage[loop]) { if (TextureImage[loop]->data) { free(TextureImage[loop]->data); } free(TextureImage[loop]); } } return Status; } /**************************** RESIZING THE SCENE ****************************/ GLvoid ReSizeGLScene(GLsizei width, GLsizei height) { if (height == 0) //height can never be 0 { height = 1; } glViewport(0,0,width,height); //make window the size of width and height glMatrixMode(GL_PROJECTION); //select the projection matrix glLoadIdentity(); //reset the view //Set Perspective View gluPerspective(45.0f,(GLfloat) width / (GLfloat) height,0.1f,100.0f); /// 45.0f is starting Angle ; width,height converted to GLfloat ; d = 0.1f<x<100.0f glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } /**************************************** INIT GL VARIABLE AND ENVIROMENT ****************************************/ int InitGL(GLvoid) { if (!LoadGLTextures()) { return false; } glClearColor(0.0f,0.0f,0.0f,1.0f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glShadeModel(GL_SMOOTH); glEnable(GL_TEXTURE_2D); player.x = -0.2f; player.y = -0.2f; player.z = 0.1f; player.fx = 0.1f; player.fy = 0.1f; player.fz = 0.1f; player.bs = false; for(int loop=0;loop<(level*dlevel);loop++) { enemy[loop].x = 0.5f; enemy[loop].y = 0.0f; enemy[loop].z = 0.1f; enemy[loop].fx = 0.0f; enemy[loop].fy = 0.0f; enemy[loop].fy = 0.0f; bullet.x = enemy[loop].x -= 0.2f; bullet.y = enemy[loop].y; } return true; } void DrawPlayer() { glBlendFunc(GL_DST_COLOR,GL_ONE_MINUS_DST_COLOR); glTranslatef(player.x,player.y,player.z); glScalef(player.fx,player.fy,player.fz); if(player.left){ glBindTexture(GL_TEXTURE_2D,texture[0]);} else{glBindTexture(GL_TEXTURE_2D,texture[8]);} glBegin(GL_QUADS); glTexCoord2f(0.0f,0.0f); glVertex3f(-1.0f,-1.0f,0.0f); glTexCoord2f(+1.0f,0.0f); glVertex3f( 1.0f,-1.0f,0.0f); glTexCoord2f(1.0f,1.0f); glVertex3f( 1.0f, 1.0f,0.0f); glTexCoord2f(+0.0f,1.0f); glVertex3f(-1.0f, 1.0f,0.0f); glEnd(); glPushMatrix(); } void DrawLevel1() { glTranslatef(0.0f,1.6f,-3.0f); glDisable(GL_DEPTH); //Background glBindTexture(GL_TEXTURE_2D,texture[2]); glBegin(GL_QUADS); glTexCoord2f(-roll+0.0f,0.0f); glVertex3f(-1.1f,-1.1f,0.0f); glTexCoord2f(-roll+3.0f,0.0f); glVertex3f( 1.1f,-1.1f,0.0f); glTexCoord2f(-roll+3.0f,3.0f); glVertex3f( 1.1f, 1.1f,0.0f); glTexCoord2f(-roll+0.0f,3.0f); glVertex3f(-1.1f, 1.1f,0.0f); glEnd(); glTranslatef(0.0f,-0.4f,0.0f); glBindTexture(GL_TEXTURE_2D,texture[4]); glBegin(GL_QUADS); glTexCoord2f(-roll+0.0f,0.0f); glVertex3f(-1.1f,-1.1f,0.0f); glTexCoord2f(-roll+3.0f,0.0f); glVertex3f( 1.1f,-1.1f,0.0f); glTexCoord2f(-roll+3.0f,3.0f); glVertex3f( 1.1f, 1.1f,0.0f); glTexCoord2f(-roll+0.0f,3.0f); glVertex3f(-1.1f, 1.1f,0.0f); glEnd(); glTranslatef(0.0f,-0.5f,0.0f); glBindTexture(GL_TEXTURE_2D,texture[3]); glBegin(GL_QUADS); glTexCoord2f(-roll+0.0f,0.0f); glVertex3f(-1.1f,-1.1f,0.0f); glTexCoord2f(-roll+3.0f,0.0f); glVertex3f( 1.1f,-1.1f,0.0f); glTexCoord2f(-roll+3.0f,3.0f); glVertex3f( 1.1f, 1.1f,0.0f); glTexCoord2f(-roll+0.0f,3.0f); glVertex3f(-1.1f, 1.1f,0.0f); glEnd(); glTranslatef(0.0f,-0.4f,0.0f); glBindTexture(GL_TEXTURE_2D,texture[1]); glBegin(GL_QUADS); glTexCoord2f(-roll+0.0f,0.0f); glVertex3f(-1.1f,-1.1f,0.0f); glTexCoord2f(-roll+3.0f,0.0f); glVertex3f( 1.1f,-1.1f,0.0f); glTexCoord2f(-roll+3.0f,3.0f); glVertex3f( 1.1f, 1.1f,0.0f); glTexCoord2f(-roll+0.0f,3.0f); glVertex3f(-1.1f, 1.1f,0.0f); glEnd(); glEnable(GL_DEPTH); } void EnemyShoot() { for(int w=0;w<(dlevel*level);w++) { glTranslatef(bullet.x,enemy[w].y,0.0f); glScalef(0.1f,0.1f,0.1f); glBegin(GL_QUADS); glTexCoord2f(0.0f,0.0f); glVertex3f(-1.0f,-1.0f,0.0f); glTexCoord2f(1.0f,0.0f); glVertex3f( 1.0f,-1.0f,0.0f); glTexCoord2f(1.0f,1.0f); glVertex3f( 1.0f, 1.0f,0.0f); glTexCoord2f(0.0f,1.0f); glVertex3f(-1.0f, 1.0f,0.0f); glEnd(); glScalef(1.0f,1.0f,1.0f); bullet.x -= 0.5f; } } /************************** DRAWING CODE IN GL ***************************/ int DrawGLScene(GLvoid) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //clear screen color glLoadIdentity(); DrawLevel1(); DrawPlayer(); glEnable(GL_BLEND); for (int loop=0; loop<(dlevel*level); loop++) // Loop To Draw Enemies { glTranslatef(enemy[loop].x,enemy[loop].y,enemy[loop].z); glColor3f(1.0f,1.0f,1.0f); // Make Enemy Body Pink glBindTexture(GL_TEXTURE_2D,texture[5]); glBegin(GL_QUADS); glTexCoord2f(0.0f,0.0f); glVertex3f(-1.1f,-1.1f,0.0f); glTexCoord2f(1.0f,0.0f); glVertex3f( 1.1f,-1.1f,0.0f); glTexCoord2f(1.0f,1.0f); glVertex3f( 1.1f, 1.1f,0.0f); glTexCoord2f(0.0f,1.0f); glVertex3f(-1.1f, 1.1f,0.0f); glEnd(); // Done Drawing Enemy Blade if(player.x >= 0.0f || player.y > 0.0f) { if((enemy[loop].x<player.x) && (enemy[loop].y == player.y)) { enemy[loop].x+= 1.0f; EnemyShoot(); } if((enemy[loop].x>player.x) && (enemy[loop].y == player.y)) { enemy[loop].x-= 1.0f; EnemyShoot(); } if((enemy[loop].y<player.y) && (enemy[loop].x == player.x)) { enemy[loop].y+= 1.0f; EnemyShoot(); } if((enemy[loop].y>player.y) && (enemy[loop].x == player.x)) { enemy[loop].y-= 1.0f; EnemyShoot(); } if((enemy[loop].x == player.x) && (enemy[loop].y == player.y)) { player.lives--; } } if(player.x<= -0.8f) { player.x+=0.1f; } if(player.x>= 0.8f) { player.x-=0.1f; } if(player.y<= -0.5f) { player.y+=0.1f; } if(player.y>= 0.08f) { player.y-=0.1f; } } glPopMatrix(); glDisable(GL_BLEND); roll+=0.01f; if (roll>1.0f) { roll-=1.0f; } return true; } /******************************* PROPERLY CLOSE THE WINDOW *******************************/ void KeyBoard() { if (keys[VK_DOWN]){player.y-= 0.1f;} if (keys[VK_UP]){player.y+= 0.1f;} if (keys[VK_LEFT]){player.x-= 0.1f; player.left = true; player.right = false;} if (keys[VK_RIGHT]){player.x+= 0.1f; player.left = false; player.right = true;} for(int loop=0;loop<(dlevel*level);loop++){ if (keys['W'])enemy[loop].y+=0.1f; if (keys['S'])enemy[loop].y-=0.1f; if (keys['A'])enemy[loop].x-=0.1f; if (keys['D'])enemy[loop].x+=0.1f;} } GLvoid KillGLWindow(GLvoid) { if (fullscreen) //is the screen in fullscreen mode? { ChangeDisplaySettings(NULL,0); //go back to desktop if this not used then comp become corrupt and have to restart ShowCursor(true); } if (hRC) //is rendering context on? { if (!wglMakeCurrent(NULL,NULL)) //are we able to release it from device context(graphic interface)? { MessageBox(NULL,"Couldnt Release DC and RC!!","ERROR",MB_OK | MB_ICONEXCLAMATION); } if (!wglDeleteContext(hRC)) //can we release RC? { MessageBox(NULL,"Couldnt Release RC","ERROR",MB_OK | MB_ICONEXCLAMATION); } hRC = NULL; } if (hDC && !ReleaseDC(hWnd,hDC)) //can we release DC? { MessageBox(NULL,"Device Context Dont Work!!","ERROR",MB_OK | MB_ICONSTOP); hDC = NULL; } if (hWnd && !DestroyWindow(hWnd)) //can we destroy window? { MessageBox(NULL,"Couldnt Kill Window!!","ERROR", MB_OK | MB_ICONEXCLAMATION); hWnd = NULL; } if (!UnregisterClass("OpenGL",hInstance)) { MessageBox(NULL,"Couldnt Unregister Class","ERROR",MB_OK | MB_ICONSTOP); hInstance = NULL; } } /**************************************** CREATE THE WINDOW ***************************************/ bool CreateGLWindow(char* title, int width, int height, int bits, bool fullscreenflag) { GLuint PixelFormat; // Holds The Results After Searching For A Match WNDCLASS wc; // Windows Class Structure DWORD dwExstyle; // Window Extended style DWORD dwstyle; // Window style RECT WindowRect; // Grabs Rectangle Upper Left / Lower Right Values 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 fullscreen=fullscreenflag; // Set The Global Fullscreen Flag hInstance = GetModuleHandle(NULL); // Grab An Instance For Our Window wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; // Redraw On Size, And Own DC For Window. wc.lpfnWndProc = (WNDPROC) WndProc; // WndProc Handles Messages wc.cbClsExtra = 0; // No Extra Window Data wc.cbWndExtra = 0; // No Extra Window Data wc.hInstance = hInstance; // Set The Instance wc.hIcon = LoadIcon(NULL, IDI_WINLOGO); // Load The Default Icon wc.hCursor = LoadCursor(NULL, IDC_ARROW); // Load The Arrow Pointer wc.hbrBackground = NULL; // No Background Required For GL wc.lpszMenuName = NULL; // We Don't Want A Menu wc.lpszClassName = "OpenGL"; // Set The Class Name if (!RegisterClass(&wc)) // Attempt To Register The Window Class { MessageBox(NULL,"Failed To Register The Window Class.","ERROR",MB_OK|MB_ICONEXCLAMATION); return FALSE; // Return FALSE } if (fullscreen) // Attempt Fullscreen Mode? { DEVMODE dmScreenSettings; // Device Mode memset(&dmScreenSettings,0,sizeof(dmScreenSettings)); // Makes Sure Memory's Cleared dmScreenSettings.dmSize=sizeof(dmScreenSettings); // Size Of The Devmode Structure dmScreenSettings.dmPelsWidth = width; // Selected Screen Width dmScreenSettings.dmPelsHeight = height; // Selected Screen Height dmScreenSettings.dmBitsPerPel = bits; // Selected Bits Per Pixel dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT; // Try To Set Selected Mode And Get Results. NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar. if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL) { // If The Mode Fails, Offer Two Options. Quit Or Use Windowed Mode. if (MessageBox(NULL,"The Requested Fullscreen Mode Is Not Supported By\nYour Video Card. Use Windowed Mode Instead?","NeHe GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES) { fullscreen=FALSE; // Windowed Mode Selected. Fullscreen = FALSE } else { // Pop Up A Message Box Letting User Know The Program Is Closing. MessageBox(NULL,"Program Will Now Close.","ERROR",MB_OK|MB_ICONSTOP); return FALSE; // Return 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 // Create The Window if (!(hWnd=CreateWindowEx( dwExstyle, // Extended style For The Window "OpenGL", // Class Name title, // Window Title dwstyle | // Defined Window style WS_CLIPSIBLINGS | // Required Window style WS_CLIPCHILDREN, // Required Window style 0, 0, // Window Position WindowRect.right-WindowRect.left, // Calculate Window Width WindowRect.bottom-WindowRect.top, // Calculate Window Height NULL, // No Parent Window NULL, // No Menu hInstance, // Instance NULL))) // Dont Pass Anything To WM_CREATE { KillGLWindow(); // Reset The Display MessageBox(NULL,"Window Creation Error.","ERROR",MB_OK|MB_ICONEXCLAMATION); return FALSE; // Return FALSE } static PIXELFORMATDESCRIPTOR pfd= // pfd Tells Windows How We Want Things To Be { sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor 1, // Version Number PFD_DRAW_TO_WINDOW | // Format Must Support Window PFD_SUPPORT_OPENGL | // Format Must Support OpenGL PFD_DOUBLEBUFFER, // Must Support Double Buffering PFD_TYPE_RGBA, // Request An RGBA Format bits, // Select Our Color Depth 0, 0, 0, 0, 0, 0, // Color Bits Ignored 0, // No Alpha Buffer 0, // Shift Bit Ignored 0, // No Accumulation Buffer 0, 0, 0, 0, // Accumulation Bits Ignored 16, // 16Bit Z-Buffer (Depth Buffer) 0, // No Stencil Buffer 0, // No Auxiliary Buffer PFD_MAIN_PLANE, // Main Drawing Layer 0, // Reserved 0, 0, 0 // Layer Masks Ignored }; if (!(hDC=GetDC(hWnd))) // Did We Get A Device Context? { KillGLWindow(); // Reset The Display MessageBox(NULL,"Can't Create A GL Device Context.","ERROR",MB_OK|MB_ICONEXCLAMATION); return FALSE; // Return FALSE } if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd))) // Did Windows Find A Matching Pixel Format? { KillGLWindow(); // Reset The Display MessageBox(NULL,"Can't Find A Suitable PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION); return FALSE; // Return FALSE } if (!SetPixelFormat(hDC,PixelFormat,&pfd)) // Are We Able To Set The Pixel Format? { KillGLWindow(); // Reset The Display MessageBox(NULL,"Can't Set The PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION); return FALSE; // Return FALSE } if (!(hRC=wglCreateContext(hDC))) // Are We Able To Get A Rendering Context? { KillGLWindow(); // Reset The Display MessageBox(NULL,"Can't Create A GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION); return FALSE; // Return FALSE } if (!wglMakeCurrent(hDC,hRC)) // Try To Activate The Rendering Context { KillGLWindow(); // Reset The Display MessageBox(NULL,"Can't Activate The GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION); return FALSE; // Return FALSE } ShowWindow(hWnd,SW_SHOW); // Show The Window SetForegroundWindow(hWnd); // Slightly Higher Priority SetFocus(hWnd); // Sets Keyboard Focus To The Window ReSizeGLScene(width, height); // Set Up Our Perspective GL Screen if (!InitGL()) // Initialize Our Newly Created GL Window { KillGLWindow(); // Reset The Display MessageBox(NULL,"Initialization Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION); return FALSE; // Return FALSE } return TRUE; // Success } LRESULT CALLBACK WndProc( HWND hWnd, // Handle For This Window UINT uMsg, // Message For This Window WPARAM wParam, // Additional Message Information LPARAM lParam) // Additional Message Information { switch (uMsg) // Check For Windows Messages { case WM_ACTIVATE: // Watch For Window Activate Message { if (!HIWORD(wParam)) // Check Minimization State { active=TRUE; // Program Is Active } else { active=FALSE; // Program Is No Longer Active } return 0; // Return To The Message Loop } case WM_SYSCOMMAND: // Intercept System Commands { switch (wParam) // Check System Calls { case SC_SCREENSAVE: // Screensaver Trying To Start? case SC_MONITORPOWER: // Monitor Trying To Enter Powersave? return 0; // Prevent From Happening } break; // Exit } case WM_CLOSE: // Did We Receive A Close Message? { PostQuitMessage(0); // Send A Quit Message return 0; // Jump Back } case WM_KEYDOWN: // Is A Key Being Held Down? { keys[wParam] = TRUE; // If So, Mark It As TRUE return 0; // Jump Back } case WM_KEYUP: // Has A Key Been Released? { keys[wParam] = FALSE; // If So, Mark It As FALSE return 0; // Jump Back } case WM_SIZE: // Resize The OpenGL Window { ReSizeGLScene(LOWORD(lParam),HIWORD(lParam)); // LoWord=Width, HiWord=Height return 0; // Jump Back } } // Pass All Unhandled Messages To DefWindowProc return DefWindowProc(hWnd,uMsg,wParam,lParam); } int WINAPI WinMain( HINSTANCE hInstance, // Instance HINSTANCE hPrevInstance, // Previous Instance LPSTR lpCmdLine, // Command Line Parameters int nCmdShow) // Window Show State { MSG msg; // Windows Message Structure BOOL done=FALSE; // Bool Variable To Exit Loop // Ask The User Which Screen Mode They Prefer if (MessageBox(NULL,"Do you want fullscreen?", "Computer Virus",MB_YESNO|MB_ICONQUESTION)==IDNO) { fullscreen=FALSE; // Windowed Mode } // Create Our OpenGL Window if (!CreateGLWindow("Watevers OpenGL",640,480,16,fullscreen)) { return 0; // Quit If Window Was Not Created } while (!done) // Loop That Runs While done=FALSE { if (PeekMessage(&msg,NULL,0,0,PM_REMOVE)) // Is There A Message Waiting? { if (msg.message==WM_QUIT) // Have We Received A Quit Message? { done=TRUE; // If So done=TRUE } else // If Not, Deal With Window Messages { TranslateMessage(&msg;; // Translate The Message DispatchMessage(&msg;; // Dispatch The Message } } else // If There Are No Messages { // Draw The Scene. Watch For ESC Key And Quit Messages From DrawGLScene() if ((active && !DrawGLScene()) || keys[VK_ESCAPE]) // Active? Was There A Quit Received? { done=TRUE; // ESC or DrawGLScene Signalled A Quit } else // Not Time To Quit, Update Screen { SwapBuffers(hDC); // Swap Buffers (Double Buffering) KeyBoard(); if (keys[VK_F1]) // Is F1 Being Pressed? { keys[VK_F1]=FALSE; // If So Make Key FALSE KillGLWindow(); // Kill Our Current Window fullscreen=!fullscreen; // Toggle Fullscreen / Windowed Mode // Recreate Our OpenGL Window if (!CreateGLWindow("Watevers OpenGL",640,480,16,fullscreen)) { return 0; // Quit If Window Was Not Created } } } } } // Shutdown KillGLWindow(); // Kill The Window return (msg.wParam); // Exit The Program }

Graphics and GPU Programming Programming OpenGL

Started by Watever April 02, 2008 02:33 PM

19 comments, last by Watever 16 years ago

Molle85

172

April 02, 2008 04:42 PM

"does it work?" is the question =)

Watever

122

Author

April 02, 2008 05:39 PM

no...i still cant see the enemy or the player....

[Edited by - Watever on April 2, 2008 8:39:26 PM]

Watever

122

Author

April 02, 2008 08:38 PM

ok ok i fixed it!!!! it turns out that since i put glDisable(GL_DEPTH) for drawLevel1 i had to make the depth negative for the player and the enemy to make it visible!!!

all i need now is to know how to update AI

[Edited by - Watever on April 2, 2008 9:38:25 PM]

Molle85

172

April 03, 2008 03:22 AM

You maybe should think about think about changing the objects position floats to a vector3 instead, it's easier and you get alot of the math function build in

Quote:

void UpdateAI()    for every AI        if curAI distance from player < 20            shoot at player        elseif curAI distance from player < 100            move curAI towards player

Watever

122

Author

April 03, 2008 03:42 PM

ok ok if vector3 how is vector3 good for math and for what math functions is it good for???

Watever

122

Author

April 03, 2008 04:03 PM

or what if i use glOrtho and switch all the positions to int..would that work too? for int is very easy...

Molle85

172

April 03, 2008 04:27 PM

glOrtho is a Orthographic projection matrix, this is not what you are looking !

Vector:
http://en.wikipedia.org/wiki/Vector_%28spatial%29

Watever

122

Author

April 03, 2008 06:33 PM

WAY TO COMPLICATED im only 13....im not in triginometry or algebra2!!!! or whatever that is!!! anything else?

Molle85

172

April 03, 2008 08:38 PM

a vector3 is x,y,z in a single object, it's mostly represented as a direction, but doesn't have to be.

if you have your players' position vector and the enemy position vector you can subtract them from each other and get the length of that vector.

vector3 player_pos;
vector3 enemy_pos;
vector3 vec = player_pos - enemy_pos;

float distance_from_each_other = vector3length( vec );

this is the same as:

float p_x, p_y, p_z;
float e_x, e_y, e_z;
float new_x = p_x - e_x;
float new_y = p_y - e_y;
float new_z = p_z - e_z;

// Pythagoras' theorem
float distance = sqrt( new_x*new_x + new_y*new_y + new_z*new_z );

Watever

122

Author

April 03, 2008 08:53 PM

well that seems like less code.......
ok ok....i get it...i will post if i get any problems

Help with problem on keyboard input

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