121 lines
4.9 KiB
C++
121 lines
4.9 KiB
C++
/*
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** Command & Conquer Red Alert(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/***************************************************************************
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** C O N F I D E N T I A L --- W E S T W O O D A S S O C I A T E S **
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***************************************************************************
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* *
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* Project Name : Westwood Library *
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* *
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* File Name : LOADFONT.C *
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* *
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* Programmer : Joe L. Bostic *
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* *
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* Start Date : September 6, 1991 *
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* *
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* Last Update : June 27, 1994 [SKB] *
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* *
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*-------------------------------------------------------------------------*
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* Functions: *
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* Load_Font -- Loads a font from disk. *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#include <wwstd.h>
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#include "font.h"
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#include <file.h>
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#include <wwmem.h>
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#if(IBM)
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#include <fcntl.h>
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#include <io.h>
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#endif
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int FontXSpacing = 0;
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int FontYSpacing = 0;
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void const *FontPtr = NULL;
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BYTE FontWidth = 8;
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BYTE FontHeight = 8;
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// only font.c and set_font.c use the following
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BYTE *FontWidthBlockPtr = NULL;
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/***************************************************************************
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* LOAD_FONT -- Loads a font from disk. *
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* *
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* This loads a font from disk. This function must be called as a *
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* precursor to calling Set_Font(). You need only call this function *
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* once per desired font at the beginning of your code, but AFTER *
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* Prog_Init() is called. *
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* *
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* INPUT: name - Pointer to font name to use (eg. "topaz.font") *
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* *
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* fontsize - Size in points of the font loaded. *
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* *
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* OUTPUT: Pointer to font data or NULL if unable to load. *
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* *
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* WARNINGS: Some system memory is grabbed by this routine. *
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* *
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* HISTORY: *
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* 4/10/91 BS : 2.0 compatibily *
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* 6/09/91 JLB : IBM and Amiga compatability. *
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* 11/27/1991 JLB : Uses file I/O routines for disk access. *
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* 01/29/1992 DRD : Modified to use new font format. *
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* 02/01/1992 DRD : Added font file verification. *
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* 06/29/1994 SKB : modified for 32 bit library *
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*=========================================================================*/
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VOID *cdecl Load_Font(BYTE const *name)
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{
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BYTE valid;
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WORD fh; // DOS file handle for font file.
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UWORD size; // Size of the data in the file (-2);
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BYTE *ptr = NULL; // Pointer to newly loaded font.
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if (Find_File(name)) {
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fh = Open_File(name, READ);
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if (Read_File(fh, (BYTE *) &size, 2) != 2) return(NULL);
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ptr = (BYTE *) Alloc(size, MEM_NORMAL);
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*(WORD *)ptr = size;
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Read_File(fh, ptr + 2, size - 2);
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Close_File(fh);
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} else {
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return (NULL);
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}
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//
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// verify that the file loaded is a valid font file.
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//
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valid = FALSE;
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if (*(ptr + 2) == 0) { // no compression
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if (*(ptr + 3) == 5) { // currently only 5 data blocks are used.
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valid = TRUE;
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}
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}
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if ( !valid ) {
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return (NULL);
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}
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return(ptr);
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}
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