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?