win 32 pong

phil67rpg · 2019-07-05T17:51:41

I am working on a pong game using windows and c++ I am trying to get the computer paddle to move up and down by itself, here is my movement code, comp_velocity = (comp_move < screen_width&&flag == 0.0f) ? (comp_velocity = 0.1f) : (comp_velocity = -0.1f); comp_move = (comp_velocity == 0.1f) ? (comp_move += 1.0f) : (comp_move -= 1.0f); if (comp_move >= screen_width) { flag = 1; } if (comp_move <= -screen_width) { flag = 0; } and here is my overall code #ifndef UNICODE #define UNICODE #endif #include <windows.h> float comp_move = 0.0f, comp_velocity = 1.0f, flag = 0.0f, screen_width = 30.0f; LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam); int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow) { const wchar_t CLASS_NAME[] = L"Sample Window Class"; WNDCLASS wc = {}; wc.lpfnWndProc = WindowProc; wc.hInstance = hInstance; wc.lpszClassName = CLASS_NAME; RegisterClass(&wc); // Create the window. HWND hwnd = CreateWindowEx( 0, // Optional window styles. CLASS_NAME, // Window class L"Pong", // Window text WS_OVERLAPPEDWINDOW, // Window style // Size and position CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, // Parent window NULL, // Menu hInstance, // Instance handle NULL // Additional application data ); if (hwnd == NULL) { return 0; } ShowWindow(hwnd, nCmdShow); // Run the message loop. MSG msg = {}; while (GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return 0; } int y = 0; LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { switch (uMsg) { case WM_DESTROY: PostQuitMessage(0); return 0; case WM_KEYDOWN: switch (wParam) { case VK_UP: y-=5; if (y <= -300) { y = -300; } break; case VK_DOWN: if (y >= 310) { y = 310; } y+=5; break; } InvalidateRect(hwnd, NULL, TRUE); case WM_PAINT: { PAINTSTRUCT ps; HDC hdc = BeginPaint(hwnd, &ps); FillRect(hdc, &ps.rcPaint, (HBRUSH)(2)); RECT rect = { 0,300+comp_move,30,400+comp_move }; HBRUSH brush = CreateSolidBrush(RGB(0, 0, 255)); FillRect(hdc, &rect, brush); RECT rect_one = { 1395,300+y,1425,400+y }; HBRUSH brush_one = CreateSolidBrush(RGB(255, 0, 0)); FillRect(hdc, &rect_one, brush_one); RECT rect_two = { 702,340,722,360 }; HBRUSH brush_two = CreateSolidBrush(RGB(255, 255, 255)); FillRect(hdc, &rect_two, brush_two); EndPaint(hwnd, &ps); } return 0; } return DefWindowProc(hwnd, uMsg, wParam, lParam); } I don't know where to put my movement code into my overall code?

NubDevice

2,572

July 04, 2019 06:52 PM

code or it didn't happen.

Dev careful. Pixel on board.

phil67rpg

Author

458

July 04, 2019 07:50 PM

here is my code


comp_move += 0.1f * comp_velocity;	

if(comp_move <= (0.0f)) 
{ 
  comp_velocity = 1.0f; 
}
if(comp_move >= (730.0f)) 
{ 
  comp_velocity = -1.0f; 
}

NubDevice

2,572

July 04, 2019 08:00 PM

I'm a little insulted, but that's fine. What I was hoping for was your current over all source to see where you really are with this so far.

Dev careful. Pixel on board.

fleabay

1,327

July 04, 2019 08:23 PM

23 minutes ago, GoliathForge said:

What I was hoping for was your current over all source to see where you really are with this so far.

He said he solved his problem. What's with this 'where you really are with this so far' business?

🙂🙂🙂🙂🙂<←The tone posse, ready for action.

NubDevice

2,572

July 04, 2019 08:28 PM

Sure, why not...you're right. Let it be what it is. Thank you.

"Usually somewhere in the bottom of main" <-- LOL

Dev careful. Pixel on board.

phil67rpg

Author

458

July 04, 2019 08:55 PM

I am trying to draw two different sprites. it is only drawing one type of sprite. sorry but I solved my problem.


void DrawBitmap(char *filename, int x, int y)
{
    //load the bitmap image
    HBITMAP image = (HBITMAP)LoadImage(0,"paddle.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
    HBITMAP image_one = (HBITMAP)LoadImage(0,"red.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE);

    //read the bitmap's properties
    BITMAP bm;
    BITMAP bm_one;
    GetObject(image, sizeof(BITMAP), &bm);
    GetObject(image_one, sizeof(BITMAP), &bm_one);

    //create a device context for the bitmap
    HDC hdcImage = CreateCompatibleDC(device);
    HDC hdcImage_one = CreateCompatibleDC(device);
    SelectObject(hdcImage, image);
    SelectObject(hdcImage_one, image_one);

    //draw the bitmap to the window (bit block transfer)
    BitBlt( 
        device,                  //destination device context
        x, y,                    //x,y location on destination
        bm.bmWidth, bm.bmHeight, //width,height of source bitmap
        hdcImage,                  //source bitmap device context
        0, 0,                    //start x,y on source bitmap
        SRCCOPY);                //blit method
    BitBlt( 
        device,                  //destination device context
        x, y,                    //x,y location on destination
        bm_one.bmWidth, bm_one.bmHeight, //width,height of source bitmap
        hdcImage_one,                  //source bitmap device context
        0, 0,                    //start x,y on source bitmap
        SRCCOPY);                //blit method

    //delete the device context and bitmap
    DeleteDC(hdcImage);
    DeleteDC(hdcImage_one);
    DeleteObject((HBITMAP)image);
    DeleteObject((HBITMAP)image_one);
}