- platform independent classes for start screen rendering.

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

src/common/startscreen/startscreen_heretic.cpp

@@ -0,0 +1,181 @@
+/*
+** st_start.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.
+**---------------------------------------------------------------------------
+**
+*/
+
+#include "startscreen.h"
+#include "filesystem.h"
+#include "printf.h"
+#include "texturemanager.h"
+
+
+// Heretic startup screen
+#define HERETIC_MINOR_VERSION	'3'			// Since we're based on Heretic 1.3
+#define THERM_X					14
+#define THERM_Y					14
+#define THERM_LEN				51
+#define THERM_COLOR				0xA		// light green
+
+
+class FHereticStartScreen : public FStartScreen
+{
+	int NotchPos;
+	int ThermX, ThermY, ThermWidth, ThermHeight;
+	int HMsgY, SMsgX;
+public:
+	FHereticStartScreen(int max_progress);
+
+	bool DoProgress(int) override;
+	void LoadingStatus(const char *message, int colors) override;
+	void AppendStatusLine(const char *status) override;
+};
+
+
+//==========================================================================
+//
+// 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.
+//
+//==========================================================================
+
+FHereticStartScreen::FHereticStartScreen(int max_progress)
+	: FStartScreen(max_progress)
+{
+	int loading_lump = fileSystem.CheckNumForName("LOADING");
+	uint8_t loading_screen[4000];
+
+	if (loading_lump < 0 || fileSystem.FileLength(loading_lump) != 4000)
+	{
+		I_Error("'LOADING' not found");
+	}
+
+	fileSystem.ReadFile(loading_lump, loading_screen);
+
+	// Slap the Heretic minor version on the loading screen. Heretic
+	// did this inside the executable rather than coming with modified
+	// LOADING screens, so we need to do the same.
+	loading_screen[2 * 160 + 49 * 2] = HERETIC_MINOR_VERSION;
+
+	// Draw the loading screen to a bitmap.
+	StartupBitmap.Create(80 * 8, 25 * 16);
+	DrawTextScreen(StartupBitmap, loading_screen);
+
+	ThermX = THERM_X * 8;
+	ThermY = THERM_Y * 16;
+	ThermWidth = THERM_LEN * 8 - 4;
+	ThermHeight = 16;
+	HMsgY = 7;
+	SMsgX = 1;
+	NotchPos = 0;
+	CreateHeader();
+}
+
+//==========================================================================
+//
+// FHereticStartScreen::Progress
+//
+// Bumps the progress meter one notch.
+//
+//==========================================================================
+
+bool FHereticStartScreen::DoProgress(int advance)
+{
+	if (CurPos < MaxPos)
+	{
+		int notch_pos = ((CurPos + 1) * ThermWidth) / MaxPos;
+		if (notch_pos != NotchPos && !(notch_pos & 3))
+		{ // Time to draw another notch.
+			int left = NotchPos + ThermX;
+			int top = ThermY;
+			int right = notch_pos + ThermX;
+			int bottom = top + ThermHeight;
+			ClearBlock(StartupBitmap, TextModePalette[THERM_COLOR], left, top, right - left, bottom - top);
+			NotchPos = notch_pos;
+			StartupTexture->CleanHardwareData(true);
+		}
+	}
+	return FStartScreen::DoProgress(advance);
+}
+
+//==========================================================================
+//
+// FHereticStartScreen :: LoadingStatus
+//
+// Prints text in the center box of the startup screen.
+//
+//==========================================================================
+
+void FHereticStartScreen::LoadingStatus(const char* message, int colors)
+{
+	int x;
+
+	for (x = 0; message[x] != '\0'; ++x)
+	{
+		DrawChar(StartupBitmap, 17 + x, HMsgY, message[x], colors);
+	}
+	HMsgY++;
+	StartupTexture->CleanHardwareData(true);
+	Render();
+}
+
+//==========================================================================
+//
+// FHereticStartScreen :: AppendStatusLine
+//
+// Appends text to Heretic's status line.
+//
+//==========================================================================
+
+void FHereticStartScreen::AppendStatusLine(const char* status)
+{
+	int x;
+
+	for (x = 0; status[x] != '\0'; ++x)
+	{
+		DrawChar(StartupBitmap, SMsgX + x, 24, status[x], 0x1f);
+	}
+	SMsgX += x;
+	StartupTexture->CleanHardwareData(true);
+	Render();
+}
+
+
+FStartScreen* CreateHereticStartScreen(int max_progress)
+{
+	return new FHereticStartScreen(max_progress);
+}