- platform independent classes for start screen rendering.

These use the internal 2D drawer. Not hooked up yet.

src/common/startscreen/endoom.cpp

@@ -0,0 +1,201 @@
+
+/*
+** endoom.cpp
+** Handles the startup screen.
+**
+**---------------------------------------------------------------------------
+** Copyright 2006-2007 Randy Heit
+** Copyright 2006-2022 Christoph Oelckers
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions
+** are met:
+**
+** 1. Redistributions of source code must retain the above copyright
+**    notice, this list of conditions and the following disclaimer.
+** 2. Redistributions in binary form must reproduce the above copyright
+**    notice, this list of conditions and the following disclaimer in the
+**    documentation and/or other materials provided with the distribution.
+** 3. The name of the author may not be used to endorse or promote products
+**    derived from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**---------------------------------------------------------------------------
+**
+*/
+
+// HEADER FILES ------------------------------------------------------------
+
+#include "startscreen.h"
+#include "cmdlib.h"
+
+#include "i_system.h"
+#include "gstrings.h"
+#include "filesystem.h"
+#include "m_argv.h"
+#include "engineerrors.h"
+#include "s_music.h"
+#include "printf.h"
+#include "startupinfo.h"
+#include "i_interface.h"
+#include "texturemanager.h"
+#include "c_cvars.h"
+#include "i_time.h"
+#include "g_input.h"
+#include "d_eventbase.h"
+
+// MACROS ------------------------------------------------------------------
+
+// How many ms elapse between blinking text flips. On a standard VGA
+// adapter, the characters are on for 16 frames and then off for another 16.
+// The number here therefore corresponds roughly to the blink rate on a
+// 60 Hz display.
+#define BLINK_PERIOD			267
+
+
+// TYPES -------------------------------------------------------------------
+
+// PUBLIC DATA DEFINITIONS -------------------------------------------------
+#if 0
+CUSTOM_CVAR(Int, showendoom, 1, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
+{
+	if (self < 0) self = 0;
+	else if (self > 2) self=2;
+}
+#endif
+// PRIVATE DATA DEFINITIONS ------------------------------------------------
+
+// CODE --------------------------------------------------------------------
+
+class FEndoomScreen : public FStartScreen
+{
+	uint64_t lastUpdateTime;
+	bool blinkstate = false;
+	bool blinking = true;
+	uint8_t endoom_screen[4000];
+
+public:
+	FEndoomScreen(int);
+	void Update();
+};
+
+
+//==========================================================================
+//
+// FHereticStartScreen Constructor
+//
+// Shows the Heretic startup screen. If the screen doesn't appear to be
+// valid, it returns a failure code in hr.
+//
+// The loading screen is an 80x25 text screen with character data and
+// attributes intermixed, which means it must be exactly 4000 bytes long.
+//
+//==========================================================================
+
+FEndoomScreen::FEndoomScreen(int loading_lump)
+	: FStartScreen(0)
+{
+	fileSystem.ReadFile(loading_lump, endoom_screen);
+
+	// Draw the loading screen to a bitmap.
+	StartupBitmap.Create(80 * 8, 26 * 16); // line 26 is for our own 'press any key to quit' message.
+	DrawTextScreen(StartupBitmap, endoom_screen);
+	ClearBlock(StartupBitmap, {0, 0, 0, 255}, 0, 25*16, 640, 16);
+	DrawString(StartupBitmap, 0, 25, GStrings("TXT_QUITENDOOM"), { 128, 128, 128 ,255}, { 0, 0, 0, 255});
+	lastUpdateTime = I_msTime();
+	
+	// Does this screen need blinking?
+	for (int i = 0; i < 80*25; ++i)
+	{
+		if (endoom_screen[1+i*2] & 0x80)
+		{
+			blinking = true;
+			break;
+		}
+	}
+}
+
+void FEndoomScreen::Update()
+{
+	if (blinking && I_msTime() > lastUpdateTime + BLINK_PERIOD)
+	{
+		lastUpdateTime = I_msTime();
+		UpdateTextBlink (StartupBitmap, endoom_screen, blinkstate);
+		blinkstate = !blinkstate;
+		StartupTexture->CleanHardwareData();
+		Render(true);
+	}
+}
+
+
+#if 0 // this part is not ready yet.
+//==========================================================================
+//
+// ST_Endoom
+//
+// Shows an ENDOOM text screen
+//
+//==========================================================================
+
+int RunEndoom()
+{
+	if (showendoom == 0 || endoomName.Len() == 0)
+	{
+		return 0;
+	}
+
+	int endoom_lump = fileSystem.CheckNumForFullName (endoomName, true);
+	
+	if (endoom_lump < 0 || fileSystem.FileLength (endoom_lump) != 4000)
+	{
+		return 0;
+	}
+
+	if (fileSystem.GetFileContainer(endoom_lump) == fileSystem.GetMaxIwadNum() && showendoom == 2)
+	{
+		// showendoom==2 means to show only lumps from PWADs.
+		return 0;
+	}
+	
+	S_StopMusic(true);
+	auto endoom = new FEndoomScreen(endoom_lump);
+	endoom->Render(true);
+
+	while(true)
+	{
+		I_GetEvent();
+		endoom->Update();
+		while (eventtail != eventhead)
+		{
+			event_t *ev = &events[eventtail];
+			eventtail = (eventtail + 1) & (MAXEVENTS - 1);
+
+			if (ev->type == EV_KeyDown || ev->type == EV_KeyUp)
+			{
+				return 0;
+			}
+			if (ev->type == EV_GUI_Event && (ev->subtype == EV_GUI_KeyDown || ev->subtype == EV_GUI_LButtonDown || ev->subtype == EV_GUI_RButtonDown || ev->subtype == EV_GUI_MButtonDown))
+			{
+				return 0;
+			}
+		}
+	}
+	return 0;
+}
+
+void ST_Endoom()
+{
+	int code = RunEndoom();
+	throw CExitEvent(code);
+}
+#endif