Hi All!
I'm try to make a game in C++ with OpenGl. So far i've programmed the sprite and
the platform. the next thing is to create a AI bot who will try to kill you in the game.
but I've got the most bisarr problem with that: The AIBot class are making a
holy random big fat square in the platform despite I never programmed it to do so.
/**************************
* Includes
*
**************************/
#include <windows.h>
#include <gl/gl.h>
/**************************
* Function Declarations
*
**************************/
LRESULT CALLBACK WndProc (HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam);
void EnableOpenGL (HWND hWnd, HDC *hDC, HGLRC *hRC);
void DisableOpenGL (HWND hWnd, HDC hDC, HGLRC hRC);
void drawSquare(float posx, float posy, float w, float h){
glPushMatrix();
glBegin(GL_POLYGON);
glColor3f(1.0f, 0.0f, 0.0f);glVertex3f(posx, posy, 0.0f);
glColor3f(0.0f, 1.0f, 0.0f);glVertex3f(posx+w, posy, 0.0f);
glColor3f(0.0f, 0.0f, 1.0f);glVertex3f(posx+w, posy+h, 0.0f);
glColor3f(1.0f, 0.0f, 1.0f);glVertex3f(posx, posy+h, 0.0f);
glEnd();
glPopMatrix();
}
class Area{
public:
float x, y, w, h;
Area(float Xx, float Yy, float Ww, float Hh){
x = Xx;
y = Yy;
w = Ww;
h = Hh;
}
bool isInSide(float mx, float my){
return (mx > x && my > y && mx < x+w && my < y+h);
}
};
Area rutor[]={
Area(-1.0f, -1.0f, 2.0f, 0.1f),
Area(-1.0f, -1.0f, 0.1f, 2.0f),
Area(0.9f, -1.0f, 0.1f, 2.0f),
Area(-0.1f, -0.9f, 0.3f, 0.2f),
Area(-0.4f, -0.499f, 0.3f, 0.2f),
Area(-0.7f, -0.101f, 0.3f, 0.2f),
Area(-0.1f, -0.101f, 0.3f, 0.2f),
Area(0.2f, 0.3f, 0.3f, 0.2f)
};
float x=0.5f, y=0.5f, gravity = 0.000f;
bool left=false, right=false, jump=true, stay=true;
// here is the class that cause the problem
class comp{
private:
float robotl, roboty, gravity;
public:
comp(){
gravity=0.1f;
robotl=0.1f;
roboty=0.1f;
}
};
comp Comp;
/**************************
* WinMain
*
**************************/
int WINAPI WinMain (HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int iCmdShow)
{
WNDCLASS wc;
HWND hWnd;
HDC hDC;
HGLRC hRC;
MSG msg;
BOOL bQuit = FALSE;
float theta = 0.0f;
/* register window class */
wc.style = CS_OWNDC;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor (NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = "GLSample";
RegisterClass (&wc);
/* create main window */
hWnd = CreateWindow (
"GLSample", "MyGame",
WS_CAPTION | WS_POPUPWINDOW | WS_VISIBLE,
0, 0, 800, 600,
NULL, NULL, hInstance, NULL);
/* enable OpenGL for the window */
EnableOpenGL (hWnd, &hDC, &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 if (msg.message == WM_KEYDOWN){
if (msg.wParam == VK_UP){
if (jump){
y+=0.01f;
gravity = 0.01f;
jump = false;
stay = true;
}
}else if (msg.wParam == VK_LEFT && jump){
left=true;
right=false;
}else if (msg.wParam == VK_RIGHT && jump) {
left=false;
right=true;
}
}else if (msg.message == WM_KEYUP){
if (msg.wParam == VK_LEFT && jump){
left=false;
}else if (msg.wParam == VK_RIGHT && jump){
right=false;
}
}else{
TranslateMessage (&msg);
DispatchMessage (&msg);
}
}
else
{
/* OpenGL animation code goes here */
glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
glClear (GL_COLOR_BUFFER_BIT);
for (int i=0; i < sizeof(rutor); i++){
drawSquare(rutor[i].x, rutor[i].y, rutor[i].w, rutor[i].h);
if (rutor[i].isInSide(x, y-0.1f)){
gravity = 0.0f;
jump=true;
if (stay){
left=false;
right=false;
stay=false;
}
}
if (rutor[i].isInSide(x-0.05f, y-0.05f)){
x+=0.01f;
left=false;
right=false;
}
if (rutor[i].isInSide(x+0.05f, y-0.05f)){
x-=0.01f;
left=false;
right=false;
}
}
bool d=false;
for (int i=0; i < sizeof(rutor); i++){
if (rutor[i].isInSide(x, y-0.1)){
y+=0.0000001;
d=true;
break;
}
}
if (!d){
gravity-=0.0001f;
jump = false;
if (!stay && gravity<-0.0002f){
stay = true;
}
}
y+=gravity;
if (left){
x-=0.002f;
}
if (right){
x+=0.002f;
}
drawSquare(x-0.05f, y-0.1f, 0.1f, 0.2f);
SwapBuffers (hDC);
Sleep (3);
}
}
/* shutdown OpenGL */
DisableOpenGL (hWnd, hDC, hRC);
/* destroy the window explicitly */
DestroyWindow (hWnd);
return msg.wParam;
}
/********************
* Window Procedure
*
********************/
LRESULT CALLBACK WndProc (HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_CREATE:
return 0;
case WM_CLOSE:
PostQuitMessage (0);
return 0;
case WM_DESTROY:
return 0;
case WM_KEYDOWN:
switch (wParam)
{
case VK_ESCAPE:
PostQuitMessage(0);
return 0;
}
default:
return DefWindowProc (hWnd, message, wParam, lParam);
}
}
/*******************
* Enable OpenGL
*
*******************/
void EnableOpenGL (HWND hWnd, HDC *hDC, HGLRC *hRC)
{
PIXELFORMATDESCRIPTOR pfd;
int iFormat;
/* get the device context (DC) */
*hDC = GetDC (hWnd);
/* 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;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 24;
pfd.cDepthBits = 16;
pfd.iLayerType = PFD_MAIN_PLANE;
iFormat = ChoosePixelFormat (*hDC, &pfd);
SetPixelFormat (*hDC, iFormat, &pfd);
/* create and enable the render context (RC) */
*hRC = wglCreateContext( *hDC );
wglMakeCurrent( *hDC, *hRC );
}
/******************
* Disable OpenGL
*
******************/
void DisableOpenGL (HWND hWnd, HDC hDC, HGLRC hRC)
{
wglMakeCurrent (NULL, NULL);
wglDeleteContext (hRC);
ReleaseDC (hWnd, hDC);
}it seens like I can not store a X and Y float variable in the class comp.
If X and Y was an int, then the problem doesn't appears, but when X and Y
is float, then it draw that fat rectangle on the screen.
But, X and Y have to be float, because else I can't use the coordinates in OpenGL.
anyone with a solution? will be greatfull for answers.
if there were any bad english in this text, I'm sorry for that. I'm swedish.
