363 lines
12 KiB
Plaintext
363 lines
12 KiB
Plaintext
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/*
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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 : Library *
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* *
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* File Name : ICONSET.C *
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* *
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* Programmer : Joe L. Bostic *
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* *
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* Start Date : June 9, 1991 *
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* *
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* Last Update : September 15, 1993 [JLB] *
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* *
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*-------------------------------------------------------------------------*
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* Functions: *
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* Load_Icon_Set -- Loads an icons set and initializes it. *
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* Free_Icon_Set -- Frees allocations made by Load_Icon_Set(). *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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//#include "function.h"
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#include <dos.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <mem.h>
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#include <wwstd.h>
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#include <file.h>
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#include <iff.h>
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unsigned long Misc;
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void * cdecl Load_Icon_Set(char const *filename, void *iconsetptr, long buffsize);
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void cdecl Free_Icon_Set(void const *iconset);
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long cdecl Get_Icon_Set_Size(void const *iconset);
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int cdecl Get_Icon_Set_Width(void const *iconset);
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int cdecl Get_Icon_Set_Height(void const *iconset);
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void * cdecl Get_Icon_Set_Icondata(void const *iconset);
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void * cdecl Get_Icon_Set_Trans(void const *iconset);
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void * cdecl Get_Icon_Set_Remapdata(void const *iconset);
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void * cdecl Get_Icon_Set_Palettedata(void const *iconset);
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int cdecl Get_Icon_Set_Count(void const *iconset);
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void * cdecl Get_Icon_Set_Map(void const *iconset);
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//#define ICON_PALETTE_BYTES 16
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//#define ICON_MAX 256
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/***************************************************************************
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** The terrain is rendered by using icons. These are the buffers that hold
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** the icon data, remap tables, and remap index arrays.
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*/
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//PRIVATE char *IconPalette = NULL; // MCGA only.
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//PRIVATE char *IconRemap = NULL; // MCGA only.
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#define FORM_RPAL MAKE_ID('R','P','A','L')
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#define FORM_RTBL MAKE_ID('R','T','B','L')
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#define FORM_SSET MAKE_ID('S','S','E','T')
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#define FORM_SINF MAKE_ID('S','I','N','F')
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#define FORM_ICON MAKE_ID('I','C','O','N')
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#define FORM_TRNS MAKE_ID('T','R','N','S')
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#define FORM_MAP MAKE_ID('M','A','P',' ')
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/*
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** This is the control structure at the start of a loaded icon set. It must match
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** the structure in WWLIB.I! This structure MUST be a multiple of 16 bytes long.
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*/
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typedef struct {
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short Width; // Width of icons (pixels).
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short Height; // Height of icons (pixels).
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short Count; // Number of (logical) icons in this set.
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// BOOL Allocated; // Was this iconset allocated?
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short Allocated; // Was this iconset allocated?
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long Size; // Size of entire iconset memory block.
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long Icons; // Offset from buffer start to icon data.
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long Palettes; // Offset from buffer start to palette data.
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long Remaps; // Offset from buffer start to remap index data.
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long TransFlag; // Offset for transparency flag table.
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long ColorMap;
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long Map; // Icon map offset (if present).
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} IControl_Type;
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/***************************************************************************
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* LOAD_ICON_SET -- Loads an icons set and initializes it. *
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* *
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* This routine will load an IFF icon set from disk. It handles all *
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* of the necessary allocations. *
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* *
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* INPUT: filename -- Name of the icon file. *
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* *
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* buffer -- Pointer to paragraph aligned buffer to hold data. *
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* *
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* size -- Size of the buffer (in bytes). *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: In EEGA mode the iconset buffer will be free because the *
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* icons will have been transferred to card ram. *
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* *
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* HISTORY: *
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* 06/21/1991 JLB : Created. *
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* 07/01/1991 JLB : Determines icon size from file. *
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* 07/15/1991 JLB : Load and uncompress onto the same buffer. *
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* 09/15/1993 JLB : Added EMS support. *
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*=========================================================================*/
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void * cdecl Load_Icon_Set(char const *filename, void *iconsetptr, long buffsize)
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{
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int fh; // File handle of iconset.
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int bytespericon; // The number of bytes per icon.
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unsigned long icons=0; // Number of icons loaded.
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unsigned long size; // Size of the icon chunk (raw).
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unsigned long transsize;
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void *transptr=NULL;
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unsigned long mapsize; // Icon map chunk size.
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void *mapptr=NULL; // Icon map pointer.
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void *returnptr=NULL; // Iconset pointer returned by routine.
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BOOL allocated=FALSE; // Was the iconset block allocated?
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IControl_Type *idata=NULL; // Icon data loaded.
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long id; // ID of file openned.
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struct {
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char Width; // Width of icon in bytes.
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char Height; // Height of icon in bytes.
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char Format; // Graphic mode.
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//lint -esym(754,Format)
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char Bitplanes; // Number of bitplanes per icon.
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} sinf;
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/*
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** Open the icon set for loading. If it is not a legal icon set
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** data file, then abort.
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*/
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fh = Open_Iff_File(filename);
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if (fh != ERROR) {
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Read_File(fh, &id, sizeof(long));
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if (id == FORM_ICON) {
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/*
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** Determine the size of the icons and set up the graphic
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** system accordingly. Also get the sizes of the various
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** data blocks that have to be loaded.
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*/
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Read_Iff_Chunk(fh, FORM_SINF, &sinf, sizeof(sinf));
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bytespericon = ((((int)sinf.Width)<<3)*(((int)sinf.Height)<<3)*(int)sinf.Bitplanes)>>3;
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size = Get_Iff_Chunk_Size(fh,FORM_SSET);
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transsize = Get_Iff_Chunk_Size(fh, FORM_TRNS);
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mapsize = Get_Iff_Chunk_Size(fh, FORM_MAP);
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/*
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** Allocate the icon buffer if one isn't provided. First try EMS and
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** then try conventional RAM.
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*/
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allocated = FALSE;
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if (!iconsetptr) {
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buffsize = size + transsize + mapsize + sizeof(IControl_Type);
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Misc = buffsize;
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iconsetptr = Alloc(buffsize, MEM_NORMAL);
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allocated = (iconsetptr != NULL);
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}
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if (iconsetptr && (size+transsize+mapsize+sizeof(IControl_Type)) <= buffsize) {
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idata = (IControl_Type *)iconsetptr;
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memset(idata, 0, sizeof(IControl_Type));
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/*
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** Initialize the iconset header structure.
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*/
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idata->Width = sinf.Width<<3;
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idata->Height = sinf.Height<<3;
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idata->Allocated = allocated;
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idata->Icons = sizeof(IControl_Type);
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idata->Map = idata->Icons + size;
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idata->TransFlag = idata->Map + mapsize;
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idata->Size = buffsize;
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{
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long val;
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val = Read_Iff_Chunk(fh, FORM_SSET, Add_Long_To_Pointer(iconsetptr, sizeof(IControl_Type)), size);
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icons = (int)(val/(long)bytespericon);
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idata = (IControl_Type *)iconsetptr;
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}
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if (mapsize) {
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icons = mapsize;
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}
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idata->Count = (short)icons;
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/*
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** Limit buffer to only the size needed. This is done AFTER loading of the
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** raw icon data because it might have been compressed and thus need any
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** extra space to perform an overlapped decompression.
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*/
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if (buffsize > size + transsize + mapsize + sizeof(IControl_Type)) {
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buffsize = size + transsize + mapsize + sizeof(IControl_Type);
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}
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transptr = Add_Long_To_Pointer(iconsetptr, idata->TransFlag);
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Read_Iff_Chunk(fh, FORM_TRNS, transptr, transsize);
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idata = (IControl_Type *)iconsetptr;
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mapptr = Add_Long_To_Pointer(iconsetptr, idata->Map);
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Read_Iff_Chunk(fh, FORM_MAP, mapptr, mapsize);
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/*
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** Let the graphic overlay know of the icon data. This could involve
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** translation and other data manipulations.
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*/
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//Init_Stamps(iconsetptr);
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returnptr = iconsetptr;
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}
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}
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Close_Iff_File(fh);
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}
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return (returnptr); // Return with icon pointer.
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}
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/***************************************************************************
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* FREE_ICON_SET -- Frees allocations made by Load_Icon_Set(). *
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* *
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* This routine is used to free up any allocations by Load_Icon_Set(). *
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* Use this routine when a new icon set is to be loaded. *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 06/21/1991 JLB : Created. *
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*=========================================================================*/
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void cdecl Free_Icon_Set(void const *iconset)
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{
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IControl_Type *icontrol;
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icontrol = (IControl_Type *)iconset;
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if (icontrol) {
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if (icontrol->Allocated) {
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Free((void *)iconset);
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}
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}
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}
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long cdecl Get_Icon_Set_Size(void const *iconset)
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{
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IControl_Type *icontrol;
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long size=0;
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icontrol = (IControl_Type *)iconset;
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if (icontrol) {
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size = icontrol->Size;
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}
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return(size);
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}
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int cdecl Get_Icon_Set_Width(void const *iconset)
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{
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IControl_Type *icontrol;
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int width=0;
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icontrol = (IControl_Type *)iconset;
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if (icontrol) {
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width = icontrol->Width;
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}
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return(width);
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}
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int cdecl Get_Icon_Set_Height(void const *iconset)
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{
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IControl_Type *icontrol;
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int height=0;
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icontrol = (IControl_Type *)iconset;
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if (icontrol) {
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height = icontrol->Height;
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}
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return(height);
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}
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void * cdecl Get_Icon_Set_Icondata(void const *iconset)
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{
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IControl_Type *icontrol;
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void *ptr=NULL;
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icontrol = (IControl_Type *)iconset;
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if (icontrol) {
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ptr = Add_Long_To_Pointer((void *)iconset, icontrol->Icons);
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}
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return(ptr);
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}
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void * cdecl Get_Icon_Set_Trans(void const *iconset)
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{
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IControl_Type *icontrol;
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void *ptr=NULL;
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icontrol = (IControl_Type *)iconset;
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if (icontrol) {
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ptr = Add_Long_To_Pointer((void *)iconset, icontrol->TransFlag);
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}
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return(ptr);
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}
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int cdecl Get_Icon_Set_Count(void const *iconset)
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{
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IControl_Type *icontrol;
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int count;
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icontrol = (IControl_Type *)iconset;
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if (icontrol) {
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count = icontrol->Count;
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}
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return(count);
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}
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void * cdecl Get_Icon_Set_Map(void const *iconset)
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{
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IControl_Type *icontrol;
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void *ptr=NULL;
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icontrol = (IControl_Type *)iconset;
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if (icontrol) {
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ptr = Add_Long_To_Pointer((void *)iconset, icontrol->Map);
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}
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return(ptr);
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}
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