typedef unsigned short USHORT;
typedef unsigned short WORD;
typedef unsigned char UCHAR;
typedef unsigned char BYTE;
/* FUNCTION DECLARATION *******************************************************************/
int Game_Init(void *parms = NULL);
int Game_Shutdown(void *parms = NULL);
int Game_Main(void *parms = NULL);
DWORD Start_Clock(void);
DWORD Wait_Clock(DWORD count);
/* GLOBALS *********************************************************************************/
HWND main_window_handle = NULL; // save the window handle
HINSTANCE main_instance = NULL; // save the instance
int game_state = GAME_STATE_INIT; // starting state
int paddle_x = 0, paddle_y = 0; // tracks position of paddle
int ball_x = 0, ball_y = 0; // tracks position of ball
int ball_dx = 0, ball_dy = 0; // velocity of ball
int score = 0; // the score
int level = 1; // the current level
int blocks_hit = 0; // tracks number of blocks hit
DWORD start_clock_count = 0; // used for timing
// this contains the game grid data
UCHAR blocks[NUM_BLOCK_ROWS][NUM_BLOCK_COLUMNS];
/* WINDPROC ********************************************************************************/
LRESULT CALLBACK WindowProc(HWND hwnd,
UINT msg,
WPARAM wparam,
LPARAM lparam)
{
// this is the main message handler of the system
PAINTSTRUCT ps;
HDC hdc;
switch (msg)
{
case WM_CREATE:
return 0;
hdc = BeginPaint(hwnd, &ps);
EndPaint(hwnd, &ps);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
default:
break;
}
return DefWindowProc(hwnd, msg, wparam, lparam);
}
/* WINMAIN ********************************************************************************/
int WINAPI WinMain(HINSTANCE hinstance,
HINSTANCE hprevinstance,
LPSTR lpcmdline,
int ncmdshow)
{
WNDCLASS winclass;
HWND hwnd;
MSG msg;
HDC hdc;
PAINTSTRUCT ps;
/* CS_DBLCLKS Specifies that the window should be notified of double clicks with
* WM_xBUTTONDBLCLK messages
* CS_OWNDC标志，属于此窗口类的窗口实例都有自己的DC(称为私有DC)，私有DC仅属于该窗口实例，
* 所以程序只需要调用一次GetDC或BeginPaint获取DC,系统就为窗口初始化一个DC，并且保存程序
* 对其进行的改变。ReleaseDC和EndPaint函数不再需要了，因为其他程序无法访问和改变私有DC。
*/
winclass.style = CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
winclass.lpfnWndProc = WindowProc;
winclass.cbClsExtra = 0;
winclass.cbWndExtra = 0;
winclass.hInstance = hinstance;
winclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
winclass.hCursor = LoadCursor(NULL, IDC_ARROW);
winclass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
winclass.lpszMenuName = NULL;
winclass.lpszClassName = WINDOW_CLASS_NAME;
// register the window class
if (!Re