1 /* Catacomb Apocalypse Source Code
\r
2 * Copyright (C) 1993-2014 Flat Rock Software
\r
4 * This program is free software; you can redistribute it and/or modify
\r
5 * it under the terms of the GNU General Public License as published by
\r
6 * the Free Software Foundation; either version 2 of the License, or
\r
7 * (at your option) any later version.
\r
9 * This program is distributed in the hope that it will be useful,
\r
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
\r
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\r
12 * GNU General Public License for more details.
\r
14 * You should have received a copy of the GNU General Public License along
\r
15 * with this program; if not, write to the Free Software Foundation, Inc.,
\r
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
\r
22 =============================================================================
\r
24 Id Software Caching Manager
\r
25 ---------------------------
\r
27 Must be started BEFORE the memory manager, because it needs to get the headers
\r
28 loaded into the data segment
\r
30 =============================================================================
\r
33 #include "src/lib/16_ca.h"
\r
39 //#define THREEBYTEGRSTARTS
\r
40 //https://github.com/open-watcom/open-watcom-v2/issues/279#issuecomment-244587566 for _seg
\r
41 //http://www.shikadi.net/moddingwiki/GameMaps_Format for info on the code
\r
43 =============================================================================
\r
47 =============================================================================
\r
52 word bit0,bit1; // 0-255 is a character, > is a pointer to a node
\r
59 long headeroffsets[100];
\r
65 =============================================================================
\r
69 =============================================================================
\r
75 unsigned _seg *mapsegs[3];
\r
76 maptype _seg *mapheaderseg[NUMMAPS];
\r
77 byte _seg *audiosegs[NUMSNDCHUNKS];
\r
78 void _seg *grsegs[NUMCHUNKS];
\r
80 byte far grneeded[NUMCHUNKS];*/
\r
82 void (*drawcachebox) (char *title, unsigned numcache);
\r
83 void (*updatecachebox) (void);
\r
84 void (*finishcachebox) (void);
\r
87 =============================================================================
\r
91 =============================================================================
\r
94 /*extern long far CGAhead;
\r
95 extern long far EGAhead;
\r
96 extern byte CGAdict;
\r
97 extern byte EGAdict;
\r
98 extern byte far maphead;
\r
99 extern byte mapdict;
\r
100 extern byte far audiohead;
\r
101 extern byte audiodict;*/
\r
103 void CA_CannotOpen(char *string, global_game_variables_t *gvar);
\r
105 /*long _seg *grstarts; // array of offsets in egagraph, -1 for sparse
\r
106 long _seg *audiostarts; // array of offsets in audio / audiot
\r
108 #ifdef GRHEADERLINKED
\r
109 huffnode *gvar->ca.grhuffman;
\r
111 huffnode gvar->ca.grhuffman[255];
\r
114 #ifdef AUDIOHEADERLINKED
\r
115 huffnode *audiohuffman;
\r
117 huffnode audiohuffman[255];
\r
121 int grhandle; // handle to EGAGRAPH
\r
122 int maphandle; // handle to MAPTEMP / GAMEMAPS
\r
123 int audiohandle; // handle to AUDIOT / AUDIO
\r
125 long c hunkcomplen,c hunkexplen;
\r
127 SDMode oldsoundmode;
\r
131 void CAL_DialogDraw (char *title,unsigned numcache);
\r
132 void CAL_DialogUpdate (void);
\r
133 void CAL_DialogFinish (void);*/
\r
134 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest,
\r
138 #ifdef THREEBYTEGRSTARTS
\r
139 #define FILEPOSSIZE 3
\r
140 //#define GRFILEPOS(c) (*(long far *)(((byte far *)grstarts)+(c)*3)&0xffffff)
\r
141 long GRFILEPOS(int c, global_game_variables_t *gvar)
\r
148 value = *(long far *)(((byte far *)gvar->ca.grstarts)+offset);
\r
150 value &= 0x00ffffffl;
\r
152 if (value == 0xffffffl)
\r
158 #define FILEPOSSIZE 4
\r
159 #define GRFILEPOS(c) (gvar->ca.grstarts[c])
\r
163 =============================================================================
\r
167 =============================================================================
\r
171 ============================
\r
173 = CA_OpenDebug / CA_CloseDebug
\r
175 = Opens a binary file with the handle "debughandle"
\r
177 ============================
\r
179 void CA_OpenDebug(global_game_variables_t *gvar)
\r
181 #ifdef __BORLANDC__
\r
182 unlink("debug.16b");
\r
183 gvar->handle.debughandle = open("debug.16b", O_CREAT | O_WRONLY | O_TEXT);
\r
186 unlink("debug.16w");
\r
187 gvar->handle.debughandle = open("debug.16w", O_CREAT | O_WRONLY | O_TEXT);
\r
191 void CA_CloseDebug(global_game_variables_t *gvar)
\r
193 close(gvar->handle.debughandle);
\r
199 ============================
\r
201 = CAL_GetGrChunkLength
\r
203 = Gets the length of an explicit length chunk (not tiles)
\r
204 = The file pointer is positioned so the compressed data can be read in next.
\r
206 ============================
\r
209 void CAL_GetGrChunkLength (int chunk,global_game_variables_t *gvar)
\r
211 lseek(gvar->ca.file.grhandle,GRFILEPOS(chunk),SEEK_SET);
\r
212 read(gvar->ca.file.grhandle,&gvar->ca.chunkexplen,sizeof(gvar->ca.chunkexplen));
\r
213 gvar->ca.chunkcomplen = GRFILEPOS(chunk+1)-GRFILEPOS(chunk)-4;
\r
218 ==========================
\r
222 = Read from a file to a far pointer
\r
224 ==========================
\r
227 boolean CA_FarRead(int handle, byte far *dest, dword length, global_game_variables_t *gvar)
\r
232 if(gvar->pm.emm.EMSVer<0x40)
\r
233 if(length>0xfffflu)
\r
235 printf("File is a fat bakapee\n");
\r
236 //segm=(length%0xfffflu)-1;
\r
237 //fat=segm*0xfffflu;
\r
239 printf("CA_FarRead doesn't support 64K reads yet!\n");
\r
240 return 0;//TODO: EXPAND!!!
\r
248 mov cx,[WORD PTR length]
\r
249 mov dx,[WORD PTR dest]
\r
250 mov ds,[WORD PTR dest+2]
\r
251 mov ah,0x3f // READ w/handle
\r
258 #ifdef __BORLANDC__
\r
262 #ifdef __BORLANDC__
\r
265 cmp ax,[WORD PTR length]
\r
267 // errno = EINVFMT; // user manager knows this is bad read
\r
270 #ifdef __BORLANDC__
\r
274 #ifdef __BORLANDC__
\r
278 #ifdef __BORLANDC__
\r
290 ==========================
\r
294 = Write from a file to a far pointer
\r
296 ==========================
\r
299 boolean CA_FarWrite(int handle, byte far *source, dword length, global_game_variables_t *gvar)
\r
304 if(gvar->pm.emm.EMSVer<0x40)
\r
305 if(length>0xfffflu)
\r
307 printf("File is a fat bakapee\n");
\r
308 //segm=(length%0xfffflu)-1;
\r
309 //fat=segm*0xfffflu;
\r
311 printf("CA_FarWrite doesn't support 64K reads yet!\n");
\r
320 mov cx,[WORD PTR length]
\r
321 mov dx,[WORD PTR source]
\r
322 mov ds,[WORD PTR source+2]
\r
323 mov ah,0x40 // WRITE w/handle
\r
330 #ifdef __BORLANDC__
\r
334 #ifdef __BORLANDC__
\r
337 cmp ax,[WORD PTR length]
\r
339 // errno = ENOMEM; // user manager knows this is bad write
\r
342 #ifdef __BORLANDC__
\r
346 #ifdef __BORLANDC__
\r
350 #ifdef __BORLANDC__
\r
362 ==========================
\r
366 = Reads a file into an allready allocated buffer
\r
368 ==========================
\r
371 boolean CA_ReadFile(char *filename, memptr *ptr, global_game_variables_t *gvar)
\r
377 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
380 size = filelength(handle);
\r
381 #ifdef __DEBUG_CA__
\r
383 printf("===============================================================================\n");
\r
384 printf(" CA_ReadFile\n");
\r
385 printf("===============================================================================\n");
\r
387 printf(" ptr=%Fp\n", ptr);
\r
388 printf(" *ptr=%Fp\n", *ptr);
\r
389 printf(" &ptr=%Fp\n", &ptr);
\r
392 if(!CA_FarRead(handle,*ptr,size, gvar))
\r
403 ==========================
\r
407 = Writes a file from a memory buffer
\r
409 ==========================
\r
412 boolean CA_WriteFile (char *filename, void far *ptr, long length, global_game_variables_t *gvar)
\r
418 handle = open(filename,O_CREAT | O_BINARY | O_WRONLY,
\r
419 S_IREAD | S_IWRITE | S_IFREG);
\r
424 if (!CA_FarWrite (handle,ptr,length, gvar))
\r
436 ==========================
\r
440 = Allocate space for and load a file
\r
442 ==========================
\r
445 boolean CA_LoadFile(char *filename, memptr *ptr, global_game_variables_t *gvar)
\r
451 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
454 size = filelength(handle);
\r
455 #ifdef __DEBUG_CA__
\r
457 printf("===============================================================================\n");
\r
458 printf(" CA_LoadFile\n");
\r
459 printf("===============================================================================\n");
\r
461 printf(" ptr=%Fp\n", ptr);
\r
462 printf(" *ptr=%Fp\n", *ptr);
\r
463 printf(" &ptr=%Fp\n", &ptr);
\r
466 MM_GetPtr(ptr,size, gvar);
\r
467 #ifdef __DEBUG_CA__
\r
470 printf("---------------------------------------\n");
\r
471 printf(" ptr=%Fp\n", ptr);
\r
472 printf(" *ptr=%Fp\n", *ptr);
\r
473 printf(" &ptr=%Fp\n", &ptr);
\r
474 printf("-------------------------------------------------------------------------------\n");
\r
477 if(!CA_FarRead(handle,*ptr,size, gvar))
\r
487 ============================================================================
\r
489 COMPRESSION routines, see JHUFF.C for more
\r
491 ============================================================================
\r
499 = CAL_OptimizeNodes
\r
501 = Goes through a huffman table and changes the 256-511 node numbers to the
\r
502 = actular address of the node. Must be called before CAL_HuffExpand
\r
507 void CAL_OptimizeNodes(huffnode *table)
\r
514 for (i=0;i<255;i++)
\r
516 if (node->bit0 >= 256)
\r
517 node->bit0 = (unsigned)(table+(node->bit0-256));
\r
518 if (node->bit1 >= 256)
\r
519 node->bit1 = (unsigned)(table+(node->bit1-256));
\r
527 ======================
\r
531 = Length is the length of the EXPANDED data
\r
533 ======================
\r
536 void CAL_HuffExpand (byte far *source, byte far *dest,
\r
537 long length,huffnode *hufftable)
\r
539 // unsigned bit,byte,node,code;
\r
540 unsigned sourceseg,sourceoff,destseg,destoff,endoff;
\r
542 // huffnode *nodeon;
\r
544 headptr = hufftable+254; // head node is allways node 254
\r
546 source++; // normalize
\r
551 sourceseg = FP_SEG(source);
\r
552 sourceoff = FP_OFF(source);
\r
553 destseg = FP_SEG(dest);
\r
554 destoff = FP_OFF(dest);
\r
555 endoff = destoff+length;
\r
560 // ss:bx node pointer
\r
563 if (length <0xfff0)
\r
566 //--------------------------
\r
567 // expand less than 64k of data
\r
568 //--------------------------
\r
571 mov bx,[word ptr headptr]
\r
579 mov ch,[si] // load first byte
\r
582 #ifdef __BORLANDC__
\r
586 #ifdef __BORLANDC__
\r
589 test ch,cl // bit set?
\r
591 mov dx,[ss:bx] // take bit0 path from node
\r
592 shl cl,1 // advance to next bit position
\r
595 #ifdef __BORLANDC__
\r
599 #ifdef __BORLANDC__
\r
602 mov dx,[ss:bx+2] // take bit1 path
\r
603 shl cl,1 // advance to next bit position
\r
605 #ifdef __BORLANDC__
\r
609 #ifdef __BORLANDC__
\r
612 mov ch,[si] // load next byte
\r
614 mov cl,1 // back to first bit
\r
615 #ifdef __BORLANDC__
\r
619 #ifdef __BORLANDC__
\r
622 or dh,dh // if dx<256 its a byte, else move node
\r
624 mov bx,dx // next node = (huffnode *)code
\r
626 #ifdef __BORLANDC__
\r
630 #ifdef __BORLANDC__
\r
634 inc di // write a decopmpressed byte out
\r
635 mov bx,[word ptr headptr] // back to the head node for next bit
\r
644 //--------------------------
\r
645 // expand more than 64k of data
\r
646 //--------------------------
\r
651 mov bx,[word ptr headptr]
\r
659 lodsb // load first byte
\r
660 #ifdef __BORLANDC__
\r
664 #ifdef __BORLANDC__
\r
667 test al,cl // bit set?
\r
669 mov dx,[ss:bx] // take bit0 path from node
\r
671 #ifdef __BORLANDC__
\r
675 #ifdef __BORLANDC__
\r
678 mov dx,[ss:bx+2] // take bit1 path
\r
679 #ifdef __BORLANDC__
\r
683 #ifdef __BORLANDC__
\r
686 shl cl,1 // advance to next bit position
\r
689 cmp si,0x10 // normalize ds:si
\r
695 #ifdef __BORLANDC__
\r
699 #ifdef __BORLANDC__
\r
702 mov cl,1 // back to first bit
\r
703 #ifdef __BORLANDC__
\r
707 #ifdef __BORLANDC__
\r
710 or dh,dh // if dx<256 its a byte, else move node
\r
712 mov bx,dx // next node = (huffnode *)code
\r
714 #ifdef __BORLANDC__
\r
718 #ifdef __BORLANDC__
\r
722 inc di // write a decopmpressed byte out
\r
723 mov bx,[word ptr headptr] // back to the head node for next bit
\r
725 cmp di,0x10 // normalize es:di
\r
731 #ifdef __BORLANDC__
\r
735 #ifdef __BORLANDC__
\r
738 sub [WORD PTR ss:length],1
\r
740 dec [WORD PTR ss:length+2]
\r
741 jns expand // when length = ffff ffff, done
\r
754 ======================
\r
756 = CAL_CarmackExpand
\r
758 = Length is the length of the EXPANDED data
\r
760 ======================
\r
763 #define NEARTAG 0xa7
\r
764 #define FARTAG 0xa8
\r
766 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest, unsigned length)
\r
768 unsigned ch,chhigh,count,offset;
\r
769 unsigned far *copyptr, far *inptr, far *outptr;
\r
780 if (chhigh == NEARTAG)
\r
784 { // have to insert a word containing the tag byte
\r
785 ch |= *(/*(unsigned char far *)*/inptr)++;
\r
791 offset = *(/*(unsigned char far *)*/inptr)++;
\r
792 copyptr = outptr - offset;
\r
795 *outptr++ = *copyptr++;
\r
798 else if (chhigh == FARTAG)
\r
802 { // have to insert a word containing the tag byte
\r
803 ch |= *(/*(unsigned char far *)*/inptr)++;
\r
810 copyptr = dest + offset;
\r
813 *outptr++ = *copyptr++;
\r
826 ======================
\r
830 ======================
\r
833 long CA_RLEWCompress (unsigned far *source, long length, unsigned far *dest,
\r
837 unsigned value,count,i;
\r
838 unsigned far *start,far *end;
\r
842 end = source + (length+1)/2;
\r
851 while (*source == value && source<end)
\r
856 if (count>3 || value == rlewtag)
\r
859 // send a tag / count / value string
\r
868 // send word without compressing
\r
870 for (i=1;i<=count;i++)
\r
874 } while (source<end);
\r
876 complength = 2*(dest-start);
\r
882 ======================
\r
885 = length is EXPANDED length
\r
887 ======================
\r
890 void CA_RLEWexpand (unsigned far *source, unsigned far *dest,long length,
\r
893 // unsigned value,count,i;
\r
895 unsigned sourceseg,sourceoff,destseg,destoff,endseg,endoff;
\r
905 if (value != rlewtag)
\r
913 // compressed string
\r
917 for (i=1;i<=count;i++)
\r
920 } while (dest<end);
\r
923 end = dest + (length)/2;
\r
924 sourceseg = FP_SEG(source);
\r
925 sourceoff = FP_OFF(source);
\r
926 destseg = FP_SEG(dest);
\r
927 destoff = FP_OFF(dest);
\r
928 endseg = FP_SEG(end);
\r
929 endoff = FP_OFF(end);
\r
933 // ax = source value
\r
935 // cx = repeat counts
\r
938 // NOTE: A repeat count that produces 0xfff0 bytes can blow this!
\r
946 #ifdef __BORLANDC__
\r
950 #ifdef __BORLANDC__
\r
958 #ifdef __BORLANDC__
\r
962 #ifdef __BORLANDC__
\r
966 mov cx,ax // repeat count
\r
967 lodsw // repeat value
\r
969 #ifdef __BORLANDC__
\r
973 #ifdef __BORLANDC__
\r
976 cmp si,0x10 // normalize ds:si
\r
987 #ifdef __BORLANDC__
\r
991 #ifdef __BORLANDC__
\r
994 cmp di,0x10 // normalize es:di
\r
1005 #ifdef __BORLANDC__
\r
1009 #ifdef __BORLANDC__
\r
1025 =============================================================================
\r
1027 CACHE MANAGER ROUTINES
\r
1029 =============================================================================
\r
1033 ======================
\r
1037 ======================
\r
1040 void CAL_SetupGrFile (global_game_variables_t *gvar)
\r
1048 #ifdef GRHEADERLINKED
\r
1050 gvar->ca.grhuffman = (huffnode *)&VGAdict;
\r
1051 grstarts = (long _seg *)FP_SEG(&VGAhead);
\r
1053 CAL_OptimizeNodes (gvar->ca.grhuffman);
\r
1058 // load ???dict.ext (huffman dictionary for graphics files)
\r
1061 strcpy(fname,GDICTNAME);
\r
1062 strcat(fname,EXTENSION);
\r
1064 if ((handle = open(fname,
\r
1065 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1066 CA_CannotOpen(fname,gvar);
\r
1068 read(handle, &gvar->ca.grhuffman, sizeof(gvar->ca.grhuffman));
\r
1070 CAL_OptimizeNodes (gvar->ca.grhuffman);
\r
1072 // load the data offsets from ???head.ext
\r
1074 MM_GetPtr (MEMPTRCONV gvar->ca.grstarts,(NUMCHUNKS+1)*FILEPOSSIZE, gvar);
\r
1076 strcpy(fname,GHEADNAME);
\r
1077 strcat(fname,EXTENSION);
\r
1079 if ((handle = open(fname,
\r
1080 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1081 CA_CannotOpen(fname,gvar);
\r
1083 CA_FarRead(handle, (memptr)gvar->ca.grstarts, (NUMCHUNKS+1)*FILEPOSSIZE, gvar);
\r
1091 // Open the graphics file, leaving it open until the game is finished
\r
1093 strcpy(fname,GFILENAME);
\r
1094 strcat(fname,EXTENSION);
\r
1096 gvar->ca.file.grhandle = open(fname, O_RDONLY | O_BINARY);
\r
1097 if (gvar->ca.file.grhandle == -1)
\r
1098 CA_CannotOpen(fname,gvar);
\r
1102 // load the pic and sprite headers into the arrays in the data segment
\r
1105 MM_GetPtr(MEMPTRCONV gvar->video.pictable,NUMPICS*sizeof(pictabletype),gvar);
\r
1106 CAL_GetGrChunkLength(STRUCTPIC,gvar); // position file pointer
\r
1107 MM_GetPtr(&compseg,gvar->ca.chunkcomplen, gvar);
\r
1108 CA_FarRead (gvar->ca.file.grhandle,compseg,gvar->ca.chunkcomplen,gvar);
\r
1109 CAL_HuffExpand (compseg, (byte far *)gvar->video.pictable,NUMPICS*sizeof(pictabletype),gvar->ca.grhuffman);
\r
1110 MM_FreePtr(&compseg,gvar);
\r
1114 MM_GetPtr(MEMPTRCONV picmtable,NUMPICM*sizeof(pictabletype));
\r
1115 CAL_GetGrChunkLength(STRUCTPICM); // position file pointer
\r
1116 MM_GetPtr(&compseg,gvar->ca.chunkcomplen);
\r
1117 CA_FarRead (gvar->ca.file.grhandle,compseg,gvar->ca.chunkcomplen);
\r
1118 CAL_HuffExpand (compseg, (byte far *)picmtable,NUMPICS*sizeof(pictabletype),gvar->ca.grhuffman);
\r
1119 MM_FreePtr(&compseg);
\r
1123 MM_GetPtr(MEMPTRCONV spritetable,NUMSPRITES*sizeof(spritetabletype));
\r
1124 CAL_GetGrChunkLength(STRUCTSPRITE); // position file pointer
\r
1125 MM_GetPtr(&compseg,gvar->ca.chunkcomplen);
\r
1126 CA_FarRead (gvar->ca.file.grhandle,compseg,gvar->ca.chunkcomplen);
\r
1127 CAL_HuffExpand (compseg, (byte far *)spritetable,NUMSPRITES*sizeof(spritetabletype),gvar->ca.grhuffman);
\r
1128 MM_FreePtr(&compseg);
\r
1133 //==========================================================================
\r
1137 ======================
\r
1139 = CAL_SetupMapFile
\r
1141 ======================
\r
1144 void CAL_SetupMapFile (global_game_variables_t *gvar)
\r
1146 #ifndef MAPHEADERLINKED
\r
1152 // load maphead.ext (offsets and tileinfo for map file)
\r
1154 #ifndef MAPHEADERLINKED
\r
1155 if ((handle = open("maphead.mph",
\r
1156 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1157 Quit (gvar, "Can't open maphead.mph");
\r
1158 length = filelength(handle);
\r
1159 MM_GetPtr (MEMPTRCONV gvar->ca.tinf,length,gvar);
\r
1160 CA_FarRead(handle, gvar->ca.tinf, length,gvar);
\r
1164 gvar->ca.tinf = (byte _seg *)FP_SEG(&maphead);
\r
1169 // open the data file
\r
1171 //TODO: multiple files
\r
1172 if ((gvar->ca.file.maphandle = open("data/test.map",
\r
1173 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1174 Quit (gvar, "Can't open data/test.map!");
\r
1175 /*#ifdef MAPHEADERLINKED
\r
1176 if ((maphandle = open("GAMEMAPS.16"ENSION,
\r
1177 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1178 Quit ("Can't open GAMEMAPS.16"ENSION"!");
\r
1180 if ((maphandle = open("MAPTEMP.16"ENSION,
\r
1181 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1182 Quit ("Can't open MAPTEMP.16"ENSION"!");
\r
1186 //==========================================================================
\r
1190 ======================
\r
1192 = CAL_SetupAudioFile
\r
1194 ======================
\r
1197 /*void CAL_SetupAudioFile (void)
\r
1203 // load maphead.ext (offsets and tileinfo for map file)
\r
1205 #ifndef AUDIOHEADERLINKED
\r
1206 if ((handle = open("AUDIOHED.16",
\r
1207 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1208 Quit (gvar, "Can't open AUDIOHED.16""!");
\r
1209 length = filelength(handle);
\r
1210 MM_GetPtr (MEMPTRCONV audiostarts,length);
\r
1211 CA_FarRead(handle, (byte far *)audiostarts, length);
\r
1214 audiohuffman = (huffnode *)&audiodict;
\r
1215 CAL_OptimizeNodes (audiohuffman);
\r
1216 audiostarts = (long _seg *)FP_SEG(&audiohead);
\r
1220 // open the data file
\r
1222 #ifndef AUDIOHEADERLINKED
\r
1223 if ((audiohandle = open("AUDIOT.16",
\r
1224 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1225 Quit (gvar, "Can't open AUDIOT.16""!");
\r
1227 if ((audiohandle = open("AUDIO.16",
\r
1228 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1229 Quit (gvar, "Can't open AUDIO.16""!");
\r
1233 //==========================================================================
\r
1237 ======================
\r
1241 = Open all files and load in headers
\r
1243 ======================
\r
1246 void CA_Startup(global_game_variables_t *gvar)
\r
1249 #ifdef __BORLANDC__
\r
1250 unlink("profile.16b");
\r
1251 gvar->handle.profilehandle = open("profile.16b", O_CREAT | O_WRONLY | O_TEXT);
\r
1253 #ifdef __WATCOMC__
\r
1254 unlink("profile.16w");
\r
1255 gvar->handle.profilehandle = open("profile.16w", O_CREAT | O_WRONLY | O_TEXT);
\r
1259 #ifdef __BORLANDC__
\r
1260 unlink("meminfo.16b");
\r
1261 gvar->handle.showmemhandle = open("meminfo.16b", O_CREAT | O_WRONLY | O_TEXT);
\r
1263 #ifdef __WATCOMC__
\r
1264 unlink("meminfo.16w");
\r
1265 gvar->handle.showmemhandle = open("meminfo.16w", O_CREAT | O_WRONLY | O_TEXT);
\r
1270 CAL_SetupMapFile (gvar);
\r
1272 #ifndef NOGRAPHICS
\r
1273 CAL_SetupGrFile (gvar);
\r
1276 CAL_SetupMapFile (gvar);
\r
1279 gvar->ca.camap.mapon = -1;
\r
1280 gvar->ca.ca_levelbit = 1;
\r
1281 gvar->ca.ca_levelnum = 0;
\r
1283 /* drawcachebox = CAL_DialogDraw;
\r
1284 updatecachebox = CAL_DialogUpdate;
\r
1285 finishcachebox = CAL_DialogFinish;*/
\r
1288 //==========================================================================
\r
1292 ======================
\r
1296 = Closes all files
\r
1298 ======================
\r
1301 void CA_Shutdown(global_game_variables_t *gvar)
\r
1304 close(gvar->handle.profilehandle);
\r
1306 close(gvar->handle.showmemhandle);
\r
1308 close(gvar->ca.file.maphandle);
\r
1309 close(gvar->ca.file.grhandle);
\r
1310 close(gvar->ca.file.audiohandle);
\r
1313 //===========================================================================
\r
1316 ======================
\r
1318 = CA_CacheAudioChunk
\r
1320 ======================
\r
1323 void CA_CacheAudioChunk (int chunk)
\r
1325 long pos,compressed;
\r
1326 #ifdef AUDIOHEADERLINKED
\r
1328 memptr bigbufferseg;
\r
1332 if (audiosegs[chunk])
\r
1334 MM_SetPurge (MEMPTRCONV audiosegs[chunk],0);
\r
1335 return; // allready in memory
\r
1338 // MDM begin - (GAMERS EDGE)
\r
1340 if (!FindFile("AUDIO.16",NULL,2))
\r
1341 Quit (gvar, "CA_CacheAudioChunk(): Can't find audio files.");
\r
1346 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1347 // a larger buffer
\r
1349 pos = audiostarts[chunk];
\r
1350 compressed = audiostarts[chunk+1]-pos;
\r
1352 lseek(audiohandle,pos,SEEK_SET);
\r
1354 #ifndef AUDIOHEADERLINKED
\r
1356 MM_GetPtr (MEMPTRCONV audiosegs[chunk],compressed);
\r
1360 CA_FarRead(audiohandle,audiosegs[chunk],compressed);
\r
1364 if (compressed<=BUFFERSIZE)
\r
1366 CA_FarRead(audiohandle,bufferseg,compressed);
\r
1367 source = bufferseg;
\r
1371 MM_GetPtr(&bigbufferseg,compressed);
\r
1374 MM_SetLock (&bigbufferseg,true);
\r
1375 CA_FarRead(audiohandle,bigbufferseg,compressed);
\r
1376 source = bigbufferseg;
\r
1379 expanded = *(long far *)source;
\r
1380 source += 4; // skip over length
\r
1381 MM_GetPtr (MEMPTRCONV audiosegs[chunk],expanded);
\r
1384 CAL_HuffExpand (source,audiosegs[chunk],expanded,audiohuffman);
\r
1387 if (compressed>BUFFERSIZE)
\r
1388 MM_FreePtr(&bigbufferseg);
\r
1392 //===========================================================================
\r
1395 ======================
\r
1397 = CA_LoadAllSounds
\r
1399 = Purges all sounds, then loads all new ones (mode switch)
\r
1401 ======================
\r
1404 void CA_LoadAllSounds (void)
\r
1408 switch (oldsoundmode)
\r
1413 start = STARTPCSOUNDS;
\r
1416 start = STARTADLIBSOUNDS;
\r
1420 for (i=0;i<NUMSOUNDS;i++,start++)
\r
1421 if (audiosegs[start])
\r
1422 MM_SetPurge (MEMPTRCONV audiosegs[start],3); // make purgable
\r
1426 switch (SoundMode)
\r
1431 start = STARTPCSOUNDS;
\r
1434 start = STARTADLIBSOUNDS;
\r
1438 for (i=0;i<NUMSOUNDS;i++,start++)
\r
1439 CA_CacheAudioChunk (start);
\r
1441 oldsoundmode = SoundMode;
\r
1444 //===========================================================================
\r
1446 //????#if GRMODE == EGAGR
\r
1450 ======================
\r
1454 = Make a shifted (one byte wider) copy of a sprite into another area
\r
1456 ======================
\r
1459 unsigned static sheight,swidth;
\r
1460 boolean static dothemask;
\r
1462 void CAL_ShiftSprite (unsigned segment,unsigned source,unsigned dest,
\r
1463 unsigned width, unsigned height, unsigned pixshift, boolean domask)
\r
1466 sheight = height; // because we are going to reassign bp
\r
1468 dothemask = domask;
\r
1472 mov ds,ax // source and dest are in same segment, and all local
\r
1479 mov bp,WORD PTR [shifttabletable+bp] // bp holds pointer to shift table
\r
1481 cmp [ss:dothemask],0
\r
1485 // table shift the mask
\r
1487 mov dx,[ss:sheight]
\r
1488 #ifdef __BORLANDC__
\r
1492 #ifdef __BORLANDC__
\r
1495 mov BYTE PTR [di],255 // 0xff first byte
\r
1496 mov cx,ss:[swidth]
\r
1497 #ifdef __BORLANDC__
\r
1501 #ifdef __BORLANDC__
\r
1504 mov al,[bx] // source
\r
1506 inc bx // next source byte
\r
1510 mov ax,[bp+si] // table shift into two bytes
\r
1512 and [di],al // and with first byte
\r
1514 mov [di],ah // replace next byte
\r
1518 inc di // the last shifted byte has 1s in it
\r
1521 #ifdef __BORLANDC__
\r
1525 #ifdef __BORLANDC__
\r
1529 // table shift the data
\r
1531 mov dx,ss:[sheight]
\r
1533 shl dx,1 // four planes of data
\r
1534 #ifdef __BORLANDC__
\r
1538 #ifdef __BORLANDC__
\r
1541 mov BYTE PTR [di],0 // 0 first byte
\r
1542 mov cx,ss:[swidth]
\r
1543 #ifdef __BORLANDC__
\r
1547 #ifdef __BORLANDC__
\r
1550 mov al,[bx] // source
\r
1551 inc bx // next source byte
\r
1555 mov ax,[bp+si] // table shift into two bytes
\r
1556 or [di],al // or with first byte
\r
1558 mov [di],ah // replace next byte
\r
1562 inc di // the last shifted byte has 0s in it
\r
1570 mov ax,ss // restore data segment
\r
1578 //===========================================================================
\r
1581 ======================
\r
1585 = Generate shifts and set up sprite structure for a given sprite
\r
1587 ======================
\r
1590 void CAL_CacheSprite (int chunk, byte far *compressed)
\r
1593 unsigned shiftstarts[5];
\r
1594 unsigned smallplane,bigplane,expanded;
\r
1595 spritetabletype far *spr;
\r
1596 spritetype _seg *dest;
\r
1598 #if GRMODE == CGAGR
\r
1600 // CGA has no pel panning, so shifts are never needed
\r
1602 spr = &spritetable[chunk-STARTSPRITES];
\r
1603 smallplane = spr->width*spr->height;
\r
1604 MM_GetPtr (&grsegs[chunk],smallplane*2+MAXSHIFTS*6);
\r
1607 dest = (spritetype _seg *)grsegs[chunk];
\r
1608 dest->sourceoffset[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1609 dest->planesize[0] = smallplane;
\r
1610 dest->width[0] = spr->width;
\r
1613 // expand the unshifted shape
\r
1615 CAL_HuffExpand (compressed, &dest->data[0],smallplane*2,gvar->ca.grhuffman);
\r
1620 #if GRMODE == EGAGR
\r
1623 // calculate sizes
\r
1625 spr = &spritetable[chunk-STARTSPRITES];
\r
1626 smallplane = spr->width*spr->height;
\r
1627 bigplane = (spr->width+1)*spr->height;
\r
1629 shiftstarts[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1630 shiftstarts[1] = shiftstarts[0] + smallplane*5; // 5 planes in a sprite
\r
1631 shiftstarts[2] = shiftstarts[1] + bigplane*5;
\r
1632 shiftstarts[3] = shiftstarts[2] + bigplane*5;
\r
1633 shiftstarts[4] = shiftstarts[3] + bigplane*5; // nothing ever put here
\r
1635 expanded = shiftstarts[spr->shifts];
\r
1636 MM_GetPtr (&grsegs[chunk],expanded);
\r
1639 dest = (spritetype _seg *)grsegs[chunk];
\r
1642 // expand the unshifted shape
\r
1644 CAL_HuffExpand (compressed, &dest->data[0],smallplane*5,gvar->ca.grhuffman);
\r
1647 // make the shifts!
\r
1649 switch (spr->shifts)
\r
1654 dest->sourceoffset[i] = shiftstarts[0];
\r
1655 dest->planesize[i] = smallplane;
\r
1656 dest->width[i] = spr->width;
\r
1663 dest->sourceoffset[i] = shiftstarts[0];
\r
1664 dest->planesize[i] = smallplane;
\r
1665 dest->width[i] = spr->width;
\r
1669 dest->sourceoffset[i] = shiftstarts[1];
\r
1670 dest->planesize[i] = bigplane;
\r
1671 dest->width[i] = spr->width+1;
\r
1673 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1674 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1678 dest->sourceoffset[0] = shiftstarts[0];
\r
1679 dest->planesize[0] = smallplane;
\r
1680 dest->width[0] = spr->width;
\r
1682 dest->sourceoffset[1] = shiftstarts[1];
\r
1683 dest->planesize[1] = bigplane;
\r
1684 dest->width[1] = spr->width+1;
\r
1685 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1686 dest->sourceoffset[1],spr->width,spr->height,2,true);
\r
1688 dest->sourceoffset[2] = shiftstarts[2];
\r
1689 dest->planesize[2] = bigplane;
\r
1690 dest->width[2] = spr->width+1;
\r
1691 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1692 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1694 dest->sourceoffset[3] = shiftstarts[3];
\r
1695 dest->planesize[3] = bigplane;
\r
1696 dest->width[3] = spr->width+1;
\r
1697 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1698 dest->sourceoffset[3],spr->width,spr->height,6,true);
\r
1703 Quit (gvar, "CAL_CacheSprite: Bad shifts number!");
\r
1709 //===========================================================================
\r
1713 ======================
\r
1715 = CAL_ExpandGrChunk
\r
1717 = Does whatever is needed with a pointer to a compressed chunk
\r
1719 ======================
\r
1722 void CAL_ExpandGrChunk (int chunk, byte far *source)
\r
1727 if (chunk >= STARTTILE8 && chunk < STARTEXTERNS)
\r
1730 // expanded sizes of tile8/16/32 are implicit
\r
1733 #if GRMODE == EGAGR
\r
1735 #define MASKBLOCK 40
\r
1738 #if GRMODE == CGAGR
\r
1740 #define MASKBLOCK 32
\r
1743 if (chunk<STARTTILE8M) // tile 8s are all in one chunk!
\r
1744 expanded = BLOCK*NUMTILE8;
\r
1745 else if (chunk<STARTTILE16)
\r
1746 expanded = MASKBLOCK*NUMTILE8M;
\r
1747 else if (chunk<STARTTILE16M) // all other tiles are one/chunk
\r
1748 expanded = BLOCK*4;
\r
1749 else if (chunk<STARTTILE32)
\r
1750 expanded = MASKBLOCK*4;
\r
1751 else if (chunk<STARTTILE32M)
\r
1752 expanded = BLOCK*16;
\r
1754 expanded = MASKBLOCK*16;
\r
1759 // everything else has an explicit size longword
\r
1761 expanded = *(long far *)source;
\r
1762 source += 4; // skip over length
\r
1766 // allocate final space, decompress it, and free bigbuffer
\r
1767 // Sprites need to have shifts made and various other junk
\r
1769 if (chunk>=STARTSPRITES && chunk< STARTTILE8)
\r
1770 CAL_CacheSprite(chunk,source);
\r
1773 MM_GetPtr (&grsegs[chunk],expanded);
\r
1776 CAL_HuffExpand (source,grsegs[chunk],expanded,gvar->ca.grhuffman);
\r
1782 ======================
\r
1786 = Gets a chunk off disk, optimizing reads to general buffer
\r
1788 ======================
\r
1791 void CAL_ReadGrChunk (int chunk)
\r
1793 long pos,compressed;
\r
1794 memptr bigbufferseg;
\r
1799 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1800 // a larger buffer
\r
1802 pos = GRFILEPOS(chunk);
\r
1803 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1807 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1810 compressed = GRFILEPOS(next)-pos;
\r
1812 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
1814 if (compressed<=BUFFERSIZE)
\r
1816 CA_FarRead(gvar->ca.file.grhandle,bufferseg,compressed);
\r
1817 source = bufferseg;
\r
1821 MM_GetPtr(&bigbufferseg,compressed);
\r
1824 MM_SetLock (&bigbufferseg,true);
\r
1825 CA_FarRead(gvar->ca.file.grhandle,bigbufferseg,compressed);
\r
1826 source = bigbufferseg;
\r
1829 CAL_ExpandGrChunk (chunk,source);
\r
1831 if (compressed>BUFFERSIZE)
\r
1832 MM_FreePtr(&bigbufferseg);
\r
1836 ======================
\r
1840 = Makes sure a given chunk is in memory, loadiing it if needed
\r
1842 ======================
\r
1845 void CA_CacheGrChunk (int chunk)
\r
1847 long pos,compressed;
\r
1848 memptr bigbufferseg;
\r
1852 gvar->ca.grneeded[chunk] |= ca_levelbit; // make sure it doesn't get removed
\r
1853 if (grsegs[chunk])
\r
1855 MM_SetPurge (&grsegs[chunk],0);
\r
1856 return; // allready in memory
\r
1859 // MDM begin - (GAMERS EDGE)
\r
1861 if (!FindFile("EGAGRAPH.16",NULL,2))
\r
1862 Quit (gvar, "CA_CacheGrChunk(): Can't find graphics files.");
\r
1867 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1868 // a larger buffer
\r
1870 pos = GRFILEPOS(chunk);
\r
1871 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1875 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1878 compressed = GRFILEPOS(next)-pos;
\r
1880 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
1882 if (compressed<=BUFFERSIZE)
\r
1884 CA_FarRead(gvar->ca.file.grhandle,bufferseg,compressed);
\r
1885 source = bufferseg;
\r
1889 MM_GetPtr(&bigbufferseg,compressed);
\r
1890 MM_SetLock (&bigbufferseg,true);
\r
1891 CA_FarRead(gvar->ca.file.grhandle,bigbufferseg,compressed);
\r
1892 source = bigbufferseg;
\r
1895 CAL_ExpandGrChunk (chunk,source);
\r
1897 if (compressed>BUFFERSIZE)
\r
1898 MM_FreePtr(&bigbufferseg);
\r
1903 //==========================================================================
\r
1906 ======================
\r
1910 ======================
\r
1913 void CA_CacheMap (global_game_variables_t *gvar)
\r
1915 long pos,compressed;
\r
1917 memptr *dest,bigbufferseg;
\r
1919 unsigned far *source;
\r
1920 #ifdef MAPHEADERLINKED
\r
1921 memptr buffer2seg;
\r
1927 // free up memory from last map
\r
1929 if (gvar->ca.camap.mapon>-1 && gvar->ca.camap.mapheaderseg[gvar->ca.camap.mapon])
\r
1930 MM_SetPurge (((memptr)gvar->ca.camap.mapheaderseg[(gvar->ca.camap.mapon)]), 3, gvar);
\r
1931 for (plane=0;plane<MAPPLANES;plane++)
\r
1932 if (gvar->ca.camap.mapsegs[plane])
\r
1933 MM_FreePtr ((memptr)gvar->ca.camap.mapsegs[plane], gvar);
\r
1935 gvar->ca.camap.mapon = gvar->ca.camap.mapnum;
\r
1939 // load map header
\r
1940 // The header will be cached if it is still around
\r
1942 // if (!gvar->ca.camap.mapheaderseg[gvar->ca.camap.mapnum])
\r
1944 // //pos = ((mapfiletype _seg *)tinf)->headeroffsets[mapnum];
\r
1945 // //pos = ((_seg *)gvar->ca.camap.tinf)->headeroffsets[gvar->ca.camap.mapnum];
\r
1946 // pos = ((memptr)gvar->ca.camap.tinf)->headeroffsets[gvar->ca.camap.mapnum];
\r
1947 // if (pos<0) // $FFFFFFFF start is a sparse map
\r
1948 // printf("CA_CacheMap: Tried to load a non existent map!");
\r
1950 // MM_GetPtr(MEMPTRCONV gvar->ca.camapheaderseg[mapnum],sizeof(maptype));
\r
1951 // lseek(maphandle,pos,SEEK_SET);
\r
1952 // CA_FarRead (maphandle,(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1955 // MM_SetPurge (MEMPTRCONV mapheaderseg[mapnum], 0, &(gvar->mm));
\r
1958 // load the planes in
\r
1959 // If a plane's pointer still exists it will be overwritten (levels are
\r
1960 // allways reloaded, never cached)
\r
1963 size = mapheaderseg[mapnum]->width * mapheaderseg[mapnum]->height * 2;
\r
1965 for (plane = 0; plane<MAPPLANES; plane++)
\r
1967 //pos = mapheaderseg[mapnum]->planestart[plane];
\r
1968 //compressed = mapheaderseg[mapnum]->planelength[plane];
\r
1971 continue; // the plane is not used in this game
\r
1973 dest = MEMPTRCONV mapsegs[plane];
\r
1974 MM_GetPtr(dest,size);
\r
1976 lseek(maphandle,pos,SEEK_SET);
\r
1977 if (compressed<=BUFFERSIZE)
\r
1978 source = bufferseg;
\r
1981 MM_GetPtr(&bigbufferseg,compressed);
\r
1982 MM_SetLock (&bigbufferseg,true);
\r
1983 source = bigbufferseg;
\r
1986 CA_FarRead(maphandle,(byte far *)source,compressed);
\r
1987 #ifdef MAPHEADERLINKED
\r
1989 // unhuffman, then unRLEW
\r
1990 // The huffman'd chunk has a two byte expanded length first
\r
1991 // The resulting RLEW chunk also does, even though it's not really
\r
1994 expanded = *source;
\r
1996 MM_GetPtr (&buffer2seg,expanded);
\r
1997 CAL_CarmackExpand (source, (unsigned far *)buffer2seg,expanded);
\r
1998 CA_RLEWexpand (((unsigned far *)buffer2seg)+1,*dest,size,
\r
1999 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
2000 MM_FreePtr (&buffer2seg);
\r
2004 // unRLEW, skipping expanded length
\r
2006 CA_RLEWexpand (source+1, *dest,size,
\r
2007 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
2010 if (compressed>BUFFERSIZE)
\r
2011 MM_FreePtr(&bigbufferseg);
\r
2015 //===========================================================================
\r
2018 ======================
\r
2022 = Goes up a bit level in the needed lists and clears it out.
\r
2023 = Everything is made purgable
\r
2025 ======================
\r
2028 void CA_UpLevel (global_game_variables_t *gvar)
\r
2030 if (gvar->ca.ca_levelnum==7)
\r
2031 printf("CA_UpLevel: Up past level 7!");
\r
2033 gvar->ca.ca_levelbit<<=1;
\r
2034 gvar->ca.ca_levelnum++;
\r
2037 //===========================================================================
\r
2040 ======================
\r
2044 = Goes down a bit level in the needed lists and recaches
\r
2045 = everything from the lower level
\r
2047 ======================
\r
2050 void CA_DownLevel (global_game_variables_t *gvar)
\r
2052 if (!gvar->ca.ca_levelnum)
\r
2053 printf("CA_DownLevel: Down past level 0!");
\r
2054 gvar->ca.ca_levelbit>>=1;
\r
2055 gvar->ca.ca_levelnum--;
\r
2056 ////++++++++++++++++++++++++++++++++++++++++++CA_CacheMarks(NULL);
\r
2059 //===========================================================================
\r
2062 ======================
\r
2066 = Clears out all the marks at the current level
\r
2068 ======================
\r
2071 void CA_ClearMarks (global_game_variables_t *gvar)
\r
2075 for (i=0;i<NUMCHUNKS;i++)
\r
2076 gvar->ca.grneeded[i]&=~gvar->ca.ca_levelbit;
\r
2079 //===========================================================================
\r
2082 ======================
\r
2084 = CA_ClearAllMarks
\r
2086 = Clears out all the marks on all the levels
\r
2088 ======================
\r
2091 void CA_ClearAllMarks (global_game_variables_t *gvar)
\r
2093 _fmemset (gvar->ca.grneeded,0,sizeof(gvar->ca.grneeded));
\r
2094 gvar->ca.ca_levelbit = 1;
\r
2095 gvar->ca.ca_levelnum = 0;
\r
2098 //===========================================================================
\r
2101 ======================
\r
2105 ======================
\r
2108 void CA_SetGrPurge (global_game_variables_t *gvar)
\r
2115 CA_ClearMarks (gvar);
\r
2117 for (i=0;i<NUMCHUNKS;i++)
\r
2118 if (gvar->ca.grsegs[i])
\r
2119 MM_SetPurge (gvar->ca.grsegs[i],3, gvar);
\r
2124 ======================
\r
2128 = Make everything possible purgable
\r
2130 ======================
\r
2133 void CA_SetAllPurge (global_game_variables_t *gvar)
\r
2137 CA_ClearMarks (gvar);
\r
2140 // free cursor sprite and background save
\r
2142 //____VW_FreeCursor ();
\r
2145 // free map headers and map planes
\r
2147 // for (i=0;i<NUMMAPS;i++)
\r
2148 // if (gvar->ca.camap.mapheaderseg[i])
\r
2149 // MM_SetPurge (gvar->ca.camap.mapheaderseg[i],3, gvar);
\r
2152 if (gvar->ca.mapsegs[i])
\r
2153 MM_FreePtr ((memptr *)&gvar->ca.mapsegs[i], gvar);
\r
2158 for (i=0;i<NUMSNDCHUNKS;i++)
\r
2159 if (gvar->ca.audiosegs[i])
\r
2160 MM_SetPurge ((memptr *)&gvar->ca.audiosegs[i],3, gvar);
\r
2165 CA_SetGrPurge (gvar);
\r
2169 //===========================================================================
\r
2173 ======================
\r
2177 ======================
\r
2180 #define NUMBARS (17l*8)
\r
2183 unsigned thx,thy,lastx;
\r
2184 long barx,barstep;
\r
2186 void CAL_DialogDraw (char *title,unsigned numcache)
\r
2188 unsigned homex,homey,x;
\r
2190 barstep = (NUMBARS<<16)/numcache;
\r
2193 // draw dialog window (masked tiles 12 - 20 are window borders)
\r
2195 US_CenterWindow (20,8);
\r
2199 US_CPrint ("Loading");
\r
2200 fontcolor = F_SECONDCOLOR;
\r
2201 US_CPrint (title);
\r
2202 fontcolor = F_BLACK;
\r
2205 // draw thermometer bar
\r
2209 VWB_DrawTile8(thx,thy,0); // CAT3D numbers
\r
2210 VWB_DrawTile8(thx,thy+8,3);
\r
2211 VWB_DrawTile8(thx,thy+16,6);
\r
2212 VWB_DrawTile8(thx+17*8,thy,2);
\r
2213 VWB_DrawTile8(thx+17*8,thy+8,5);
\r
2214 VWB_DrawTile8(thx+17*8,thy+16,8);
\r
2215 for (x=thx+8;x<thx+17*8;x+=8)
\r
2217 VWB_DrawTile8(x,thy,1);
\r
2218 VWB_DrawTile8(x,thy+8,4);
\r
2219 VWB_DrawTile8(x,thy+16,7);
\r
2222 thx += 4; // first line location
\r
2224 barx = (long)thx<<16;
\r
2227 VW_UpdateScreen();
\r
2232 ======================
\r
2234 = CAL_DialogUpdate
\r
2236 ======================
\r
2239 void CAL_DialogUpdate (void)
\r
2245 if (xh - lastx > BARSTEP)
\r
2247 for (x=lastx;x<=xh;x++)
\r
2248 #if GRMODE == EGAGR
\r
2249 VWB_Vlin (thy,thy+13,x,14);
\r
2251 #if GRMODE == CGAGR
\r
2252 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2255 VW_UpdateScreen();
\r
2260 ======================
\r
2262 = CAL_DialogFinish
\r
2264 ======================
\r
2267 void CAL_DialogFinish (void)
\r
2271 xh = thx + NUMBARS;
\r
2272 for (x=lastx;x<=xh;x++)
\r
2273 #if GRMODE == EGAGR
\r
2274 VWB_Vlin (thy,thy+13,x,14);
\r
2276 #if GRMODE == CGAGR
\r
2277 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2279 VW_UpdateScreen();
\r
2283 //===========================================================================
\r
2286 ======================
\r
2290 ======================
\r
2292 #define MAXEMPTYREAD 1024
\r
2294 void CAL_CacheMarks (char *title, global_game_variables_t *gvar)
\r
2297 int i,next,numcache;
\r
2298 long pos,endpos,nextpos,nextendpos,compressed;
\r
2299 long bufferstart,bufferend; // file position of general buffer
\r
2301 memptr bigbufferseg;
\r
2303 dialog = (title!=NULL);
\r
2307 // go through and make everything not needed purgable
\r
2309 for (i=0;i<NUMCHUNKS;i++)
\r
2310 if (gvar->ca.grneeded[i]&(gvar->ca.ca_levelbit))//if (grneeded[i]&ca_levelbit)
\r
2312 if (gvar->ca.grsegs[i]) // its allready in memory, make
\r
2313 MM_SetPurge(gvar->ca.grsegs[i],0,gvar); // sure it stays there!
\r
2319 if (gvar->ca.grsegs[i]) // not needed, so make it purgeable
\r
2320 MM_SetPurge(gvar->ca.grsegs[i],3,gvar);
\r
2323 if (!numcache) // nothing to cache!
\r
2326 // MDM begin - (GAMERS EDGE)
\r
2328 // if (!FindFile("EGAGRAPH.16",NULL,2))
\r
2329 // Quit (gvar, "CA_CacheMarks(): Can't find graphics files.");
\r
2336 write(profilehandle,title,strlen(title));
\r
2337 write(profilehandle,"\n",1);
\r
2340 drawcachebox(title,numcache);
\r
2344 // go through and load in anything still needed
\r
2346 bufferstart = bufferend = 0; // nothing good in buffer now
\r
2348 for (i=0;i<NUMCHUNKS;i++)
\r
2349 if ( (gvar->ca.grneeded[i]&(gvar->ca.ca_levelbit)) && !gvar->ca.grsegs[i])
\r
2352 // update thermometer
\r
2354 if (dialog && updatecachebox)
\r
2355 updatecachebox ();
\r
2357 pos = GRFILEPOS(i);
\r
2362 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
2365 compressed = GRFILEPOS(next)-pos;
\r
2366 endpos = pos+compressed;
\r
2368 if (compressed<=BUFFERSIZE)
\r
2370 if (bufferstart<=pos
\r
2371 && bufferend>= endpos)
\r
2373 // data is allready in buffer
\r
2374 source = (byte _seg *)bufferseg+(pos-bufferstart);
\r
2378 // load buffer with a new block from disk
\r
2379 // try to get as many of the needed blocks in as possible
\r
2380 while ( next < NUMCHUNKS )
\r
2382 while (next < NUMCHUNKS &&
\r
2383 !(gvar->video.grneeded[next]&ca_levelbit && !grsegs[next]))
\r
2385 if (next == NUMCHUNKS)
\r
2388 nextpos = GRFILEPOS(next);
\r
2389 while (GRFILEPOS(++next) == -1) // skip past any sparse tiles
\r
2391 nextendpos = GRFILEPOS(next);
\r
2392 if (nextpos - endpos <= MAXEMPTYREAD
\r
2393 && nextendpos-pos <= BUFFERSIZE)
\r
2394 endpos = nextendpos;
\r
2396 next = NUMCHUNKS; // read pos to posend
\r
2399 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
2400 CA_FarRead(gvar->ca.file.grhandle,(gvar->mm.bufferseg),endpos-pos,gvar);
\r
2401 bufferstart = pos;
\r
2402 bufferend = endpos;
\r
2403 source = bufferseg;
\r
2408 // big chunk, allocate temporary buffer
\r
2409 MM_GetPtr(&bigbufferseg,compressed,gvar);
\r
2412 MM_SetLock (&bigbufferseg,true);
\r
2413 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
2414 CA_FarRead(gvar->ca.file.grhandle,bigbufferseg,compressed,gvar);
\r
2415 source = bigbufferseg;
\r
2418 CAL_ExpandGrChunk (i,source);
\r
2422 if (compressed>BUFFERSIZE)
\r
2423 MM_FreePtr(&bigbufferseg);
\r
2428 // finish up any thermometer remnants
\r
2430 if (dialog && finishcachebox)
\r
2434 void CA_CannotOpen(char *string, global_game_variables_t *gvar)
\r
2438 strcpy(str,"Can't open ");
\r
2439 strcat(str,string);
\r
2440 strcat(str,"!\n");
\r