Initial commit of Command & Conquer Red Alert source code.

2025-12-16 07:31:39 -05:00 · 2025-02-27 16:15:05 +00:00
parent b685cea758
commit 5e733d5dcc
2082 changed files with 797727 additions and 0 deletions
--- a/WINVQ/VQM32/XMODEPG.CPP
+++ b/WINVQ/VQM32/XMODEPG.CPP
@@ -0,0 +1,201 @@
+/*
+**	Command & Conquer Red Alert(tm)
+**	Copyright 2025 Electronic Arts Inc.
+**
+**	This program is free software: you can redistribute it and/or modify
+**	it under the terms of the GNU General Public License as published by
+**	the Free Software Foundation, either version 3 of the License, or
+**	(at your option) any later version.
+**
+**	This program is distributed in the hope that it will be useful,
+**	but WITHOUT ANY WARRANTY; without even the implied warranty of
+**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**	GNU General Public License for more details.
+**
+**	You should have received a copy of the GNU General Public License
+**	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/****************************************************************************
+*
+*         C O N F I D E N T I A L -- W E S T W O O D  S T U D I O S
+*
+*----------------------------------------------------------------------------
+*
+* FILE
+*     xmodepg.c
+*
+* DESCRIPTION
+*     Xmode page access. (32-Bit protected mode)
+*
+* PROGRAMMER
+*     Bill Randolph
+*     Denzil E. Long, Jr.
+*
+* DATE
+*     January 26, 1995
+*
+*----------------------------------------------------------------------------
+*
+* PUBLIC
+*     SetupXPaging - Setup Xmode paging variables.
+*     FlipXPage    - Page flip to next Xmode page.
+*     ShowXPage    - Show the specified Xmode page.
+*     GetXHidPage  - Get the address of the current Xmode HidPage.
+*     GetXSeenPage - Get the address of the current Xmode SeenPage.
+*
+****************************************************************************/
+
+#include <dos.h>
+#include "video.h"
+
+/*---------------------------------------------------------------------------
+ * PRIVATE DECLARATIONS
+ *-------------------------------------------------------------------------*/
+
+#define PAGE0_START_OFFSET 0
+#define PAGE1_START_OFFSET ((320 * 240) / 4)
+
+/* PageFlip page values. */
+static unsigned long PageStartOffsets[2] = {
+	PAGE0_START_OFFSET,
+	PAGE1_START_OFFSET
+};
+
+static long DisplayedPage;
+static long NonDisplayedPage;
+
+/****************************************************************************
+*
+* NAME
+*     SetupXPaging - Setup Xmode paging variables.
+*
+* SYNOPSIS
+*     SetupXPaging()
+*
+*     void SetupXPaging(void);
+*
+* FUNCTION
+*
+* INPUTS
+*     NONE
+*
+* RESULT
+*     NONE
+*
+****************************************************************************/
+
+void SetupXPaging(void)
+{
+	DisplayedPage = 1;
+	NonDisplayedPage = DisplayedPage ^ 1;
+}
+
+
+/****************************************************************************
+*
+* NAME
+*     FlipXPage - Page flip to next Xmode page.
+*
+* SYNOPSIS
+*     FlipXPage()
+*
+*     void FlipXPage(void);
+*
+* FUNCTION
+*
+* INPUTS
+*     NONE
+*
+* RESULT
+*     NONE
+*
+****************************************************************************/
+
+void FlipXPage(void)
+{
+	ShowXPage(PageStartOffsets[NonDisplayedPage]);
+	DisplayedPage = NonDisplayedPage;
+	NonDisplayedPage = DisplayedPage ^ 1;
+}
+
+
+/****************************************************************************
+*
+* NAME
+*     ShowXPage - Show the specified Xmode page.
+*
+* SYNOPSIS
+*     ShowXPage(page)
+*
+*     void ShowXPage(long);
+*
+* FUNCTION
+*
+* INPUTS
+*     Page - Xmode page number to show.
+*
+* RESULT
+*     NONE
+*
+****************************************************************************/
+
+void DisplayXPage(long page)
+{
+	ShowXPage(PageStartOffsets[page & 1]);
+	DisplayedPage = page;
+	NonDisplayedPage = DisplayedPage ^ 1;
+}
+
+
+/****************************************************************************
+*
+* NAME
+*     GetXHidPage - Get the address of the current Xmode HidPage.
+*
+* SYNOPSIS
+*     HidPage = GetXHidPage()
+*
+*     unsigned char *GetXHidPage(void);
+*
+* FUNCTION
+*
+* INPUTS
+*     NONE
+*
+* RESULT
+*     HidPage - Address of Xmode HidPage.
+*
+****************************************************************************/
+
+unsigned char *GetXHidPage(void)
+{
+	return((unsigned char *)PageStartOffsets[NonDisplayedPage]);
+}
+
+
+/****************************************************************************
+*
+* NAME
+*     GetXSeenPage - Get the address of the current Xmode SeenPage.
+*
+* SYNOPSIS
+*     SeenPage = GetXSeenPage()
+*
+*     unsigned char *GetXSeenPage(void);
+*
+* FUNCTION
+*
+* INPUTS
+*     NONE
+*
+* RESULT
+*     SeePage - Address of the Xmode SeenPage.
+*
+****************************************************************************/
+
+unsigned char *GetXSeenPage(void)
+{
+	return ((unsigned char *)PageStartOffsets[DisplayedPage]);
+}
+