Merge branch 'master' of das-labor.org:users/chris/borgware-2d
This commit is contained in:
Christian Kroll
commit
fb7129d2eb
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@ -50,23 +50,24 @@
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/** Height of the canvas. */
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#define WND_Y_EXTENTS (NUM_ROWS * LED_EXTENT)
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/* string constants */
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LPCSTR g_strWindowClass = "BorgSimulatorWindowClass";
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LPCSTR g_strWindowTitle = "Borg Simulator";
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LPCSTR g_strError = "Error";
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LPCSTR g_strErrorRegisterWindow = "Could not register window class.";
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LPCSTR g_strErrorCreateWindow = "Could not create window.";
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LPCSTR g_strErrorCreateEvent = "Could not create wait event.";
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LPCSTR g_strErrorCreateThread = "Could not create display loop thread.";
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LPCSTR g_strErrorCreateUITimer = "Could not create UI Timer.";
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LPCSTR g_strErr = "Error";
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LPCSTR g_strErrTimerResolution = "Could not retrieve minimum timer resolution.";
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LPCSTR g_strErrRegisterWindow = "Could not register window class.";
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LPCSTR g_strErrCreateWindow = "Could not create window.";
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LPCSTR g_strErrCreateEvent = "Could not create wait event.";
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LPCSTR g_strErrCreateThread = "Could not create display loop thread.";
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LPCSTR g_strErrCreateUITimer = "Could not create UI Timer.";
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/** Minimum timer resolution the system is capable of. */
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UINT g_uResolution;
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/** Event object for the multimedia timer (wait() function). */
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HANDLE g_hWaitEvent;
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/** Fake port for simulating joystick input. */
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volatile unsigned char fakeport;
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/** Flag which indicates if wait should jump to the menu if fire is pressed. */
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@ -82,7 +83,6 @@ LRESULT CALLBACK simWndProc(HWND hWnd,
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WPARAM wParam,
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LPARAM lParam);
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/**
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* Creates a new window and makes it visible.
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* @param hInstance Handle of the instance where this window should belong to.
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@ -133,13 +133,12 @@ HWND simCreateWindow(HINSTANCE hInstance,
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}
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else
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{
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fprintf(stderr, g_strErrorRegisterWindow);
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fprintf(stderr, g_strErrRegisterWindow);
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}
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return hWnd;
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}
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/**
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* Closes windows and unregisters its associated window class.
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* @param lphWnd Pointer to window handle.
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@ -152,7 +151,6 @@ void simDestroyWindow(HWND hWnd,
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UnregisterClassA(g_strWindowClass, hInstance);
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}
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/**
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* Draws the LED matrix on the given device context.
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* @param hdc The device context where the LED matrix should be drawn on.
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@ -216,7 +214,6 @@ void simDrawMatrix(HDC hdc)
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}
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}
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/**
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* Retrieves device context from given window, creates a compatible memory
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* device context for double buffering and hands that thing over to
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@ -363,7 +360,7 @@ LRESULT CALLBACK simWndProc(HWND hWnd,
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/* map key releases to fake joystick movements */
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case WM_KEYUP:
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switch(wParam)
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switch (wParam)
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{
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case VK_SPACE: /* fire */
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fakeport &= ~0x01;
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@ -411,7 +408,6 @@ LRESULT CALLBACK simWndProc(HWND hWnd,
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return lResult;
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}
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/**
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* Entry point for starting the the display loop in a thread.
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* @param lpParam Free style arguments for the thread function (not used here).
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@ -423,19 +419,36 @@ DWORD WINAPI simLoop(LPVOID lpParam)
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return 0;
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}
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/**
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* Retrieves and enforces the minimum timer resolution of the current system.
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* @return Result of the multimedia timer operations.
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*/
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MMRESULT simSetMinimumTimerResolution()
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{
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TIMECAPS tc;
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MMRESULT mmresult;
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mmresult = timeGetDevCaps(&tc, sizeof(tc));
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if (mmresult == TIMERR_NOERROR)
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{
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/* retrieve best resolution and configure timer services accordingly */
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g_uResolution = min(max(tc.wPeriodMin, 0), tc.wPeriodMax);
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mmresult = timeBeginPeriod(g_uResolution);
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}
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return mmresult;
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}
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/**
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* Wait function which utilizes multimedia timers and thread synchronization
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* objects. Although this is much more complicated than calling the Sleep()
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* function, it is also much more precise.
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* @param ms The requested delay in milliseconds.
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* @param uResolution The minimum timer resolution the system is capable of.
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*/
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void wait(int ms)
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{
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TIMECAPS tc;
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MMRESULT mmresult;
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MMRESULT mmTimerEventId;
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UINT uResolution;
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/* check if fire button is pressed (and if it is, jump to the menu) */
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if (waitForFire)
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@ -446,17 +459,8 @@ void wait(int ms)
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}
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}
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/* retrieve timer resolution capabilities of the current system */
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mmresult = timeGetDevCaps(&tc, sizeof(tc));
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if (mmresult == TIMERR_NOERROR)
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{
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/* retrieve best resolution and configure timer services accordingly */
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uResolution = min(max(tc.wPeriodMin, 0), tc.wPeriodMax);
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mmresult = timeBeginPeriod(uResolution);
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if (mmresult == TIMERR_NOERROR)
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{
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/* actually retrieve a multimedia timer */
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mmTimerEventId = timeSetEvent(ms, uResolution, g_hWaitEvent, 0,
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/* retrieve a multimedia timer */
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mmTimerEventId = timeSetEvent(ms, g_uResolution, g_hWaitEvent, 0,
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TIME_ONESHOT | TIME_CALLBACK_EVENT_SET);
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if (mmTimerEventId != 0)
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{
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@ -467,14 +471,8 @@ void wait(int ms)
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/* relieve the timer from its duties */
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timeKillEvent(mmTimerEventId);
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}
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/* relax timer service constraints */
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timeEndPeriod (uResolution);
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}
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}
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}
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/**
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* Main function of the windows simulator.
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* @param hInstance Instance handle given by the operating system.
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@ -495,6 +493,9 @@ int APIENTRY WinMain(HINSTANCE hInstance,
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int nExitCode = 0;
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if ((hWnd = simCreateWindow(hInstance, nCmdShow)) != NULL)
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{
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/* retrieve minimum timer resolution */
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if (simSetMinimumTimerResolution() == TIMERR_NOERROR)
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{
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/* event handle for multimedia timer (for the wait() function) */
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g_hWaitEvent = CreateEventA(NULL, TRUE, FALSE, "Local\\WaitEvent");
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@ -504,7 +505,8 @@ int APIENTRY WinMain(HINSTANCE hInstance,
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hLoopThread = CreateThread(NULL, 0, simLoop, NULL, 0, NULL);
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if (hLoopThread != NULL)
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{
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SetThreadPriority(hLoopThread, THREAD_PRIORITY_TIME_CRITICAL);
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SetThreadPriority(hLoopThread,
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THREAD_PRIORITY_TIME_CRITICAL);
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/* issue a UI timer message every 40 ms (roughly 25 fps) */
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uTimerId = SetTimer(hWnd, 23, 40, NULL);
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@ -522,14 +524,14 @@ int APIENTRY WinMain(HINSTANCE hInstance,
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}
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else
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{
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fprintf(stderr, g_strErrorCreateUITimer);
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fprintf(stderr, g_strErrCreateUITimer);
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}
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TerminateThread(hLoopThread, 0);
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}
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else
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{
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fprintf(stderr, g_strErrorCreateThread);
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fprintf(stderr, g_strErrCreateThread);
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}
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/* relieve wait event object from its duties */
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@ -537,14 +539,22 @@ int APIENTRY WinMain(HINSTANCE hInstance,
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}
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else
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{
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fprintf(stderr, g_strErrorCreateEvent);
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fprintf(stderr, g_strErrCreateEvent);
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}
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/* relieve timer resolution constraints */
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timeEndPeriod(g_uResolution);
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}
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else
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{
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fprintf(stderr, g_strErrTimerResolution);
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}
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simDestroyWindow(hWnd, hInstance);
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}
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else
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{
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fprintf(stderr, g_strErrorCreateWindow);
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fprintf(stderr, g_strErrCreateWindow);
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}
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return nExitCode;
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