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-
- #include "worm.h"
-
- /* ------------------------------------------------------------------ */
-
- int ErrorBox(char *message)
- {
- return (MessageBox ( GetFocus(), message,
- "Worming Error", MB_ICONASTERISK | MB_OK));
- }
-
- /* ------------------------------------------------------------------ */
-
- void CreateDialogBox(HWND hWnd, FARPROC DlgProc, int idd)
- {
- extern HANDLE hInst;
- FARPROC lpProc;
-
- lpProc = MakeProcInstance(DlgProc, hInst);
- DialogBox(hInst, MAKEINTRESOURCE(idd), hWnd, lpProc);
- FreeProcInstance(lpProc);
- }
- /* ------------------------------------------------------------------ */
- /* The following pseudo-random sequence generator was published in
- Dr. Dobb's Journal, February 1992. I beleive it to be superior to the
- rand function.
- */
- unsigned LSFR(void)
- {
- static unsigned long reg = 10;
-
- reg = ((((reg >> 31) /* shift the 32nd bit to the first bit */
- ^ (reg >> 6) /* XOR it with the seventh bit */
- ^ (reg >> 4) /* XOR it with the fifth bit */
- ^ (reg >> 2) /* XOR it with the third bit */
- ^ (reg >> 1) /* XOR it with the second bit */
- ^ reg) /* XOR it with the fist bit */
- & 0x00000001) /* strip all the other bits off and */
- << 31) /* move it back to the 32nd bit. */
- | (reg >> 1); /* or it with the register shifted right. */
-
- return (int) reg & 0x00000001; /* return the first bit */
-
- }
- /* ------------------------------------------------------------ */
- BOOL IsOnDesktop(POINT testPoint)
- {
- HWND desktopHandle = GetDesktopWindow();
- POINT point;
- int size = GetSize();
-
- point.x = testPoint.x + size;
- point.y = testPoint.y + size;
- if(WindowFromPoint(point) != desktopHandle)
- return FALSE;
-
- point.x = testPoint.x - size;
- if(WindowFromPoint(point) != desktopHandle)
- return FALSE;
-
- point.y = testPoint.y - size;
- if(WindowFromPoint(point) != desktopHandle)
- return FALSE;
-
- point.x = testPoint.x + size;
- if(WindowFromPoint(point) != desktopHandle)
- return FALSE;
-
- return TRUE;
- }
-
- /* ------------------------------------------------------------------ */
-
- /* EOF */