1 /* Catacomb Apocalypse Source Code
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2 * Copyright (C) 1993-2014 Flat Rock Software
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; either version 2 of the License, or
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7 * (at your option) any later version.
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9 * This program is distributed in the hope that it will be useful,
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 * GNU General Public License for more details.
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14 * You should have received a copy of the GNU General Public License along
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15 * with this program; if not, write to the Free Software Foundation, Inc.,
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16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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22 =============================================================================
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24 Id Software Caching Manager
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25 ---------------------------
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27 Must be started BEFORE the memory manager, because it needs to get the headers
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28 loaded into the data segment
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30 =============================================================================
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33 #include "src/lib/16_ca.h"
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39 #define THREEBYTEGRSTARTS
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40 //https://github.com/open-watcom/open-watcom-v2/issues/279#issuecomment-244587566 for _seg
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41 //http://www.shikadi.net/moddingwiki/GameMaps_Format for info on the code
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43 =============================================================================
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47 =============================================================================
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52 word bit0,bit1; // 0-255 is a character, > is a pointer to a node
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59 long headeroffsets[100];
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65 =============================================================================
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69 =============================================================================
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75 unsigned _seg *mapsegs[3];
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76 maptype _seg *mapheaderseg[NUMMAPS];
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77 byte _seg *audiosegs[NUMSNDCHUNKS];
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78 void _seg *grsegs[NUMCHUNKS];
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80 byte far grneeded[NUMCHUNKS];*/
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82 void (*drawcachebox) (char *title, unsigned numcache);
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83 void (*updatecachebox) (void);
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84 void (*finishcachebox) (void);
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87 =============================================================================
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91 =============================================================================
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94 /*extern long far CGAhead;
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95 extern long far EGAhead;
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96 extern byte CGAdict;
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97 extern byte EGAdict;
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98 extern byte far maphead;
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99 extern byte mapdict;
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100 extern byte far audiohead;
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101 extern byte audiodict;*/
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103 void CA_CannotOpen(char *string, global_game_variables_t *gvar);
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105 /*long _seg *grstarts; // array of offsets in egagraph, -1 for sparse
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106 long _seg *audiostarts; // array of offsets in audio / audiot
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108 #ifdef GRHEADERLINKED
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109 huffnode *gvar->ca.grhuffman;
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111 huffnode gvar->ca.grhuffman[255];
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114 #ifdef AUDIOHEADERLINKED
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115 huffnode *audiohuffman;
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117 huffnode audiohuffman[255];
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121 int grhandle; // handle to EGAGRAPH
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122 int maphandle; // handle to MAPTEMP / GAMEMAPS
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123 int audiohandle; // handle to AUDIOT / AUDIO
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125 long chunkcomplen,chunkexplen;
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127 SDMode oldsoundmode;
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131 void CAL_DialogDraw (char *title,unsigned numcache);
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132 void CAL_DialogUpdate (void);
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133 void CAL_DialogFinish (void);*/
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134 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest,
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138 #ifdef THREEBYTEGRSTARTS
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139 #define FILEPOSSIZE 3
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140 //#define GRFILEPOS(c) (*(long far *)(((byte far *)grstarts)+(c)*3)&0xffffff)
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141 CASVT GRFILEPOS(int c, global_game_variables_t *gvar)
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148 value = *(CASVT far *)(((byte far *)gvar->ca.grstarts)+offset);
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150 value &= 0x00ffffffl;
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152 if (value == 0xffffffl)
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158 #define FILEPOSSIZE 4
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159 //#define GRFILEPOS(c) (gvar->ca.grstarts[c])
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160 CASVT GRFILEPOS(int c, global_game_variables_t *gvar)
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162 return gvar->ca.grstarts[c];
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167 =============================================================================
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171 =============================================================================
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175 ============================
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177 = CA_OpenDebug / CA_CloseDebug
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179 = Opens a binary file with the handle "debughandle"
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181 ============================
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183 void CA_OpenDebug(global_game_variables_t *gvar)
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185 #ifdef __BORLANDC__
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186 unlink("debug.16b");
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187 gvar->handle.debughandle = open("debug.16b", O_CREAT | O_WRONLY | O_TEXT);
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190 unlink("debug.16w");
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191 gvar->handle.debughandle = open("debug.16w", O_CREAT | O_WRONLY | O_TEXT);
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195 void CA_CloseDebug(global_game_variables_t *gvar)
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197 close(gvar->handle.debughandle);
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203 ============================
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205 = CAL_GetGrChunkLength
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207 = Gets the length of an explicit length chunk (not tiles)
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208 = The file pointer is positioned so the compressed data can be read in next.
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210 ============================
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213 void CAL_GetGrChunkLength (int chunk,global_game_variables_t *gvar)
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215 lseek(gvar->ca.file.grhandle,GRFILEPOS(chunk,gvar),SEEK_SET);
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216 read(gvar->ca.file.grhandle,&gvar->ca.chunkexplen,sizeof(gvar->ca.chunkexplen));
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217 gvar->ca.chunkcomplen = GRFILEPOS(chunk+1,gvar)-GRFILEPOS(chunk,gvar)-4;
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222 ==========================
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226 = Read from a file to a far pointer
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228 ==========================
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231 boolean CA_FarRead(int handle, byte far *dest, dword length, global_game_variables_t *gvar)
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236 if(gvar->pm.emm.EMSVer<0x40)
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237 if(length>0xfffflu)
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239 printf("File is a fat bakapee\n");
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240 //segm=(length%0xfffflu)-1;
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241 //fat=segm*0xfffflu;
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243 printf("CA_FarRead doesn't support 64K reads yet!\n");
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244 return 0;//TODO: EXPAND!!!
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252 mov cx,[WORD PTR length]
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253 mov dx,[WORD PTR dest]
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254 mov ds,[WORD PTR dest+2]
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255 mov ah,0x3f // READ w/handle
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262 #ifdef __BORLANDC__
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266 #ifdef __BORLANDC__
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269 cmp ax,[WORD PTR length]
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271 // errno = EINVFMT; // user manager knows this is bad read
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274 #ifdef __BORLANDC__
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278 #ifdef __BORLANDC__
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282 #ifdef __BORLANDC__
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294 ==========================
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298 = Write from a file to a far pointer
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300 ==========================
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303 boolean CA_FarWrite(int handle, byte far *source, dword length, global_game_variables_t *gvar)
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308 if(gvar->pm.emm.EMSVer<0x40)
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309 if(length>0xfffflu)
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311 printf("File is a fat bakapee\n");
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312 //segm=(length%0xfffflu)-1;
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313 //fat=segm*0xfffflu;
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315 printf("CA_FarWrite doesn't support 64K reads yet!\n");
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324 mov cx,[WORD PTR length]
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325 mov dx,[WORD PTR source]
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326 mov ds,[WORD PTR source+2]
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327 mov ah,0x40 // WRITE w/handle
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334 #ifdef __BORLANDC__
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338 #ifdef __BORLANDC__
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341 cmp ax,[WORD PTR length]
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343 // errno = ENOMEM; // user manager knows this is bad write
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346 #ifdef __BORLANDC__
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350 #ifdef __BORLANDC__
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354 #ifdef __BORLANDC__
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366 ==========================
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370 = Reads a file into an allready allocated buffer
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372 ==========================
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375 boolean CA_ReadFile(char *filename, memptr *ptr, global_game_variables_t *gvar)
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381 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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384 size = filelength(handle);
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385 #ifdef __DEBUG_CA__
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387 printf("===============================================================================\n");
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388 printf(" CA_ReadFile\n");
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389 printf("===============================================================================\n");
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391 printf(" ptr=%Fp\n", ptr);
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392 printf(" *ptr=%Fp\n", *ptr);
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393 printf(" &ptr=%Fp\n", &ptr);
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396 if(!CA_FarRead(handle,*ptr,size, gvar))
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407 ==========================
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411 = Writes a file from a memory buffer
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413 ==========================
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416 boolean CA_WriteFile (char *filename, void far *ptr, long length, global_game_variables_t *gvar)
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422 handle = open(filename,O_CREAT | O_BINARY | O_WRONLY,
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423 S_IREAD | S_IWRITE | S_IFREG);
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428 if (!CA_FarWrite (handle,ptr,length, gvar))
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440 ==========================
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444 = Allocate space for and load a file
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446 ==========================
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449 boolean CA_LoadFile(char *filename, memptr *ptr, global_game_variables_t *gvar)
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455 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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458 size = filelength(handle);
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459 #ifdef __DEBUG_CA__
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461 printf("===============================================================================\n");
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462 printf(" CA_LoadFile\n");
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463 printf("===============================================================================\n");
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465 printf(" ptr=%Fp\n", ptr);
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466 printf(" *ptr=%Fp\n", *ptr);
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467 printf(" &ptr=%Fp\n", &ptr);
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470 MM_GetPtr(ptr,size, gvar);
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471 #ifdef __DEBUG_CA__
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474 printf("---------------------------------------\n");
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475 printf(" ptr=%Fp\n", ptr);
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476 printf(" *ptr=%Fp\n", *ptr);
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477 printf(" &ptr=%Fp\n", &ptr);
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478 printf("-------------------------------------------------------------------------------\n");
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481 if(!CA_FarRead(handle,*ptr,size, gvar))
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491 ============================================================================
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493 COMPRESSION routines, see JHUFF.C for more
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495 ============================================================================
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503 = CAL_OptimizeNodes
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505 = Goes through a huffman table and changes the 256-511 node numbers to the
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506 = actular address of the node. Must be called before CAL_HuffExpand
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511 void CAL_OptimizeNodes(huffnode *table)
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518 for (i=0;i<255;i++)
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520 if (node->bit0 >= 256)
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521 node->bit0 = (unsigned)(table+(node->bit0-256));
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522 if (node->bit1 >= 256)
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523 node->bit1 = (unsigned)(table+(node->bit1-256));
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531 ======================
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535 = Length is the length of the EXPANDED data
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537 ======================
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540 void CAL_HuffExpand (byte far *source, byte far *dest,
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541 long length,huffnode *hufftable)
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543 // unsigned bit,byte,node,code;
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544 unsigned sourceseg,sourceoff,destseg,destoff,endoff;
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546 // huffnode *nodeon;
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548 headptr = hufftable+254; // head node is allways node 254
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550 source++; // normalize
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555 sourceseg = FP_SEG(source);
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556 sourceoff = FP_OFF(source);
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557 destseg = FP_SEG(dest);
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558 destoff = FP_OFF(dest);
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559 endoff = destoff+length;
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564 // ss:bx node pointer
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567 if (length <0xfff0)
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570 //--------------------------
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571 // expand less than 64k of data
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572 //--------------------------
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575 mov bx,[word ptr headptr]
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583 mov ch,[si] // load first byte
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586 #ifdef __BORLANDC__
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590 #ifdef __BORLANDC__
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593 test ch,cl // bit set?
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595 mov dx,[ss:bx] // take bit0 path from node
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596 shl cl,1 // advance to next bit position
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599 #ifdef __BORLANDC__
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603 #ifdef __BORLANDC__
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606 mov dx,[ss:bx+2] // take bit1 path
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607 shl cl,1 // advance to next bit position
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609 #ifdef __BORLANDC__
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613 #ifdef __BORLANDC__
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616 mov ch,[si] // load next byte
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618 mov cl,1 // back to first bit
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619 #ifdef __BORLANDC__
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623 #ifdef __BORLANDC__
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626 or dh,dh // if dx<256 its a byte, else move node
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628 mov bx,dx // next node = (huffnode *)code
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630 #ifdef __BORLANDC__
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634 #ifdef __BORLANDC__
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638 inc di // write a decopmpressed byte out
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639 mov bx,[word ptr headptr] // back to the head node for next bit
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648 //--------------------------
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649 // expand more than 64k of data
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650 //--------------------------
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655 mov bx,[word ptr headptr]
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663 lodsb // load first byte
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664 #ifdef __BORLANDC__
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668 #ifdef __BORLANDC__
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671 test al,cl // bit set?
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673 mov dx,[ss:bx] // take bit0 path from node
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675 #ifdef __BORLANDC__
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679 #ifdef __BORLANDC__
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682 mov dx,[ss:bx+2] // take bit1 path
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683 #ifdef __BORLANDC__
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687 #ifdef __BORLANDC__
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690 shl cl,1 // advance to next bit position
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693 cmp si,0x10 // normalize ds:si
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699 #ifdef __BORLANDC__
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703 #ifdef __BORLANDC__
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706 mov cl,1 // back to first bit
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707 #ifdef __BORLANDC__
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711 #ifdef __BORLANDC__
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714 or dh,dh // if dx<256 its a byte, else move node
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716 mov bx,dx // next node = (huffnode *)code
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718 #ifdef __BORLANDC__
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722 #ifdef __BORLANDC__
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726 inc di // write a decopmpressed byte out
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727 mov bx,[word ptr headptr] // back to the head node for next bit
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729 cmp di,0x10 // normalize es:di
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735 #ifdef __BORLANDC__
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739 #ifdef __BORLANDC__
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742 sub [WORD PTR ss:length],1
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744 dec [WORD PTR ss:length+2]
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745 jns expand // when length = ffff ffff, done
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758 ======================
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760 = CAL_CarmackExpand
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762 = Length is the length of the EXPANDED data
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764 ======================
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767 #define NEARTAG 0xa7
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768 #define FARTAG 0xa8
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770 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest, unsigned length)
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772 unsigned ch,chhigh,count,offset;
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773 unsigned far *copyptr, far *inptr, far *outptr;
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784 if (chhigh == NEARTAG)
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788 { // have to insert a word containing the tag byte
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789 ch |= *(/*(unsigned char far *)*/inptr)++;
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795 offset = *(/*(unsigned char far *)*/inptr)++;
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796 copyptr = outptr - offset;
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799 *outptr++ = *copyptr++;
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802 else if (chhigh == FARTAG)
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806 { // have to insert a word containing the tag byte
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807 ch |= *(/*(unsigned char far *)*/inptr)++;
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814 copyptr = dest + offset;
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817 *outptr++ = *copyptr++;
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830 ======================
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834 ======================
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837 long CA_RLEWCompress (unsigned far *source, long length, unsigned far *dest,
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841 unsigned value,count,i;
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842 unsigned far *start,far *end;
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846 end = source + (length+1)/2;
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855 while (*source == value && source<end)
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860 if (count>3 || value == rlewtag)
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863 // send a tag / count / value string
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872 // send word without compressing
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874 for (i=1;i<=count;i++)
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878 } while (source<end);
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880 complength = 2*(dest-start);
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886 ======================
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889 = length is EXPANDED length
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891 ======================
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894 void CA_RLEWexpand (unsigned far *source, unsigned far *dest,long length,
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897 // unsigned value,count,i;
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899 unsigned sourceseg,sourceoff,destseg,destoff,endseg,endoff;
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909 if (value != rlewtag)
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917 // compressed string
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921 for (i=1;i<=count;i++)
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924 } while (dest<end);
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927 end = dest + (length)/2;
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928 sourceseg = FP_SEG(source);
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929 sourceoff = FP_OFF(source);
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930 destseg = FP_SEG(dest);
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931 destoff = FP_OFF(dest);
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932 endseg = FP_SEG(end);
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933 endoff = FP_OFF(end);
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937 // ax = source value
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939 // cx = repeat counts
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942 // NOTE: A repeat count that produces 0xfff0 bytes can blow this!
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950 #ifdef __BORLANDC__
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954 #ifdef __BORLANDC__
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962 #ifdef __BORLANDC__
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966 #ifdef __BORLANDC__
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970 mov cx,ax // repeat count
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971 lodsw // repeat value
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973 #ifdef __BORLANDC__
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977 #ifdef __BORLANDC__
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980 cmp si,0x10 // normalize ds:si
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991 #ifdef __BORLANDC__
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995 #ifdef __BORLANDC__
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998 cmp di,0x10 // normalize es:di
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1009 #ifdef __BORLANDC__
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1013 #ifdef __BORLANDC__
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1029 =============================================================================
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1031 CACHE MANAGER ROUTINES
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1033 =============================================================================
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1037 ======================
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1041 ======================
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1044 void CAL_SetupGrFile (global_game_variables_t *gvar)
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1052 #ifdef GRHEADERLINKED
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1054 gvar->ca.grhuffman = (huffnode *)&VGAdict;
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1055 grstarts = (long _seg *)FP_SEG(&VGAhead);
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1057 CAL_OptimizeNodes (gvar->ca.grhuffman);
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1062 // load ???dict.ext (huffman dictionary for graphics files)
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1065 strcpy(fname,GDICTNAME);
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1066 strcat(fname,EXTENSION);
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1068 if ((handle = open(fname,
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1069 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1070 CA_CannotOpen(fname,gvar);
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1072 read(handle, &gvar->ca.grhuffman, sizeof(gvar->ca.grhuffman));
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1074 CAL_OptimizeNodes (gvar->ca.grhuffman);
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1076 // load the data offsets from ???head.ext
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1078 MM_GetPtr (MEMPTRCONV gvar->ca.grstarts,(NUMCHUNKS+1)*FILEPOSSIZE, gvar);
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1080 strcpy(fname,GHEADNAME);
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1081 strcat(fname,EXTENSION);
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1083 if ((handle = open(fname,
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1084 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1085 CA_CannotOpen(fname,gvar);
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1087 CA_FarRead(handle, (memptr)gvar->ca.grstarts, (NUMCHUNKS+1)*FILEPOSSIZE, gvar);
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1095 // Open the graphics file, leaving it open until the game is finished
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1097 strcpy(fname,GFILENAME);
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1098 strcat(fname,EXTENSION);
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1100 gvar->ca.file.grhandle = open(fname, O_RDONLY | O_BINARY);
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1101 if (gvar->ca.file.grhandle == -1)
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1102 CA_CannotOpen(fname,gvar);
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1106 // load the pic and sprite headers into the arrays in the data segment
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1109 MM_GetPtr(MEMPTRCONV gvar->video.pictable,NUMPICS*sizeof(pictabletype),gvar);
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1110 CAL_GetGrChunkLength(STRUCTPIC,gvar); // position file pointer
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1111 printf("CAL_SetupGrFile:\n");
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1112 printf(" gvar->ca.chunkcomplen size is %lu\n", gvar->ca.chunkcomplen);
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1113 MM_GetPtr(&compseg,gvar->ca.chunkcomplen,gvar);
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1115 CA_FarRead (gvar->ca.file.grhandle,compseg,gvar->ca.chunkcomplen,gvar);
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1116 CAL_HuffExpand (compseg, (byte far *)gvar->video.pictable,NUMPICS*sizeof(pictabletype),gvar->ca.grhuffman);
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1117 MM_FreePtr(&compseg,gvar);
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1121 MM_GetPtr(MEMPTRCONV picmtable,NUMPICM*sizeof(pictabletype));
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1122 CAL_GetGrChunkLength(STRUCTPICM); // position file pointer
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1123 MM_GetPtr(&compseg,gvar->ca.chunkcomplen);
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1124 CA_FarRead (gvar->ca.file.grhandle,compseg,gvar->ca.chunkcomplen);
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1125 CAL_HuffExpand (compseg, (byte far *)picmtable,NUMPICS*sizeof(pictabletype),gvar->ca.grhuffman);
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1126 MM_FreePtr(&compseg);
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1130 MM_GetPtr(MEMPTRCONV spritetable,NUMSPRITES*sizeof(spritetabletype));
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1131 CAL_GetGrChunkLength(STRUCTSPRITE); // position file pointer
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1132 MM_GetPtr(&compseg,gvar->ca.chunkcomplen);
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1133 CA_FarRead (gvar->ca.file.grhandle,compseg,gvar->ca.chunkcomplen);
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1134 CAL_HuffExpand (compseg, (byte far *)spritetable,NUMSPRITES*sizeof(spritetabletype),gvar->ca.grhuffman);
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1135 MM_FreePtr(&compseg);
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1140 //==========================================================================
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1144 ======================
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1146 = CAL_SetupMapFile
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1148 ======================
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1151 void CAL_SetupMapFile (global_game_variables_t *gvar)
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1153 #ifndef MAPHEADERLINKED
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1159 // load maphead.ext (offsets and tileinfo for map file)
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1161 #ifndef MAPHEADERLINKED
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1162 if ((handle = open("maphead.mph",
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1163 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1164 Quit (gvar, "Can't open maphead.mph");
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1165 length = filelength(handle);
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1166 MM_GetPtr (MEMPTRCONV gvar->ca.tinf,length,gvar);
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1167 CA_FarRead(handle, gvar->ca.tinf, length,gvar);
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1171 gvar->ca.tinf = (byte _seg *)FP_SEG(&maphead);
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1176 // open the data file
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1178 //TODO: multiple files
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1179 if ((gvar->ca.file.maphandle = open("data/test.map",
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1180 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1181 Quit (gvar, "Can't open data/test.map!");
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1182 /*#ifdef MAPHEADERLINKED
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1183 if ((maphandle = open("GAMEMAPS.16"ENSION,
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1184 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1185 Quit (gvar, "Can't open GAMEMAPS.16"ENSION"!");
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1187 if ((maphandle = open("MAPTEMP.16"ENSION,
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1188 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1189 Quit (gvar, "Can't open MAPTEMP.16"ENSION"!");
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1193 //==========================================================================
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1197 ======================
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1199 = CAL_SetupAudioFile
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1201 ======================
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1204 /*void CAL_SetupAudioFile (void)
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1210 // load maphead.ext (offsets and tileinfo for map file)
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1212 #ifndef AUDIOHEADERLINKED
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1213 if ((handle = open("AUDIOHED.16",
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1214 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1215 Quit (gvar, "Can't open AUDIOHED.16""!");
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1216 length = filelength(handle);
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1217 MM_GetPtr (MEMPTRCONV audiostarts,length);
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1218 CA_FarRead(handle, (byte far *)audiostarts, length);
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1221 audiohuffman = (huffnode *)&audiodict;
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1222 CAL_OptimizeNodes (audiohuffman);
\r
1223 audiostarts = (long _seg *)FP_SEG(&audiohead);
\r
1227 // open the data file
\r
1229 #ifndef AUDIOHEADERLINKED
\r
1230 if ((audiohandle = open("AUDIOT.16",
\r
1231 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1232 Quit (gvar, "Can't open AUDIOT.16""!");
\r
1234 if ((audiohandle = open("AUDIO.16",
\r
1235 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1236 Quit (gvar, "Can't open AUDIO.16""!");
\r
1240 //==========================================================================
\r
1244 ======================
\r
1248 = Open all files and load in headers
\r
1250 ======================
\r
1253 void CA_Startup(global_game_variables_t *gvar)
\r
1256 #ifdef __BORLANDC__
\r
1257 unlink("profile.16b");
\r
1258 gvar->handle.profilehandle = open("profile.16b", O_CREAT | O_WRONLY | O_TEXT);
\r
1260 #ifdef __WATCOMC__
\r
1261 unlink("profile.16w");
\r
1262 gvar->handle.profilehandle = open("profile.16w", O_CREAT | O_WRONLY | O_TEXT);
\r
1266 #ifdef __BORLANDC__
\r
1267 unlink("meminfo.16b");
\r
1268 gvar->handle.showmemhandle = open("meminfo.16b", O_CREAT | O_WRONLY | O_TEXT);
\r
1270 #ifdef __WATCOMC__
\r
1271 unlink("meminfo.16w");
\r
1272 gvar->handle.showmemhandle = open("meminfo.16w", O_CREAT | O_WRONLY | O_TEXT);
\r
1277 CAL_SetupMapFile (gvar);
\r
1279 #ifndef NOGRAPHICS
\r
1280 CAL_SetupGrFile (gvar);
\r
1283 CAL_SetupMapFile (gvar);
\r
1286 gvar->ca.camap.mapon = -1;
\r
1287 gvar->ca.ca_levelbit = 1;
\r
1288 gvar->ca.ca_levelnum = 0;
\r
1290 /* drawcachebox = CAL_DialogDraw;
\r
1291 updatecachebox = CAL_DialogUpdate;
\r
1292 finishcachebox = CAL_DialogFinish;*/
\r
1295 //==========================================================================
\r
1299 ======================
\r
1303 = Closes all files
\r
1305 ======================
\r
1308 void CA_Shutdown(global_game_variables_t *gvar)
\r
1311 close(gvar->handle.profilehandle);
\r
1313 close(gvar->handle.showmemhandle);
\r
1315 close(gvar->ca.file.maphandle);
\r
1316 close(gvar->ca.file.grhandle);
\r
1317 close(gvar->ca.file.audiohandle);
\r
1320 //===========================================================================
\r
1323 ======================
\r
1325 = CA_CacheAudioChunk
\r
1327 ======================
\r
1330 void CA_CacheAudioChunk (int chunk)
\r
1332 long pos,compressed;
\r
1333 #ifdef AUDIOHEADERLINKED
\r
1335 memptr bigbufferseg;
\r
1339 if (audiosegs[chunk])
\r
1341 MM_SetPurge (MEMPTRCONV audiosegs[chunk],0);
\r
1342 return; // allready in memory
\r
1345 // MDM begin - (GAMERS EDGE)
\r
1347 if (!FindFile("AUDIO.16",NULL,2))
\r
1348 Quit (gvar, "CA_CacheAudioChunk(): Can't find audio files.");
\r
1353 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1354 // a larger buffer
\r
1356 pos = audiostarts[chunk];
\r
1357 compressed = audiostarts[chunk+1]-pos;
\r
1359 lseek(audiohandle,pos,SEEK_SET);
\r
1361 #ifndef AUDIOHEADERLINKED
\r
1363 MM_GetPtr (MEMPTRCONV audiosegs[chunk],compressed);
\r
1367 CA_FarRead(audiohandle,audiosegs[chunk],compressed);
\r
1371 if (compressed<=BUFFERSIZE)
\r
1373 CA_FarRead(audiohandle,bufferseg,compressed);
\r
1374 source = bufferseg;
\r
1378 MM_GetPtr(&bigbufferseg,compressed);
\r
1381 MM_SetLock (&bigbufferseg,true);
\r
1382 CA_FarRead(audiohandle,bigbufferseg,compressed);
\r
1383 source = bigbufferseg;
\r
1386 expanded = *(long far *)source;
\r
1387 source += 4; // skip over length
\r
1388 MM_GetPtr (MEMPTRCONV audiosegs[chunk],expanded);
\r
1391 CAL_HuffExpand (source,audiosegs[chunk],expanded,audiohuffman);
\r
1394 if (compressed>BUFFERSIZE)
\r
1395 MM_FreePtr(&bigbufferseg);
\r
1399 //===========================================================================
\r
1402 ======================
\r
1404 = CA_LoadAllSounds
\r
1406 = Purges all sounds, then loads all new ones (mode switch)
\r
1408 ======================
\r
1411 void CA_LoadAllSounds (void)
\r
1415 switch (oldsoundmode)
\r
1420 start = STARTPCSOUNDS;
\r
1423 start = STARTADLIBSOUNDS;
\r
1427 for (i=0;i<NUMSOUNDS;i++,start++)
\r
1428 if (audiosegs[start])
\r
1429 MM_SetPurge (MEMPTRCONV audiosegs[start],3); // make purgable
\r
1433 switch (SoundMode)
\r
1438 start = STARTPCSOUNDS;
\r
1441 start = STARTADLIBSOUNDS;
\r
1445 for (i=0;i<NUMSOUNDS;i++,start++)
\r
1446 CA_CacheAudioChunk (start);
\r
1448 oldsoundmode = SoundMode;
\r
1451 //===========================================================================
\r
1453 //????#if GRMODE == EGAGR
\r
1457 ======================
\r
1461 = Make a shifted (one byte wider) copy of a sprite into another area
\r
1463 ======================
\r
1466 unsigned static sheight,swidth;
\r
1467 boolean static dothemask;
\r
1469 void CAL_ShiftSprite (unsigned segment,unsigned source,unsigned dest,
\r
1470 unsigned width, unsigned height, unsigned pixshift, boolean domask)
\r
1473 sheight = height; // because we are going to reassign bp
\r
1475 dothemask = domask;
\r
1479 mov ds,ax // source and dest are in same segment, and all local
\r
1486 mov bp,WORD PTR [shifttabletable+bp] // bp holds pointer to shift table
\r
1488 cmp [ss:dothemask],0
\r
1492 // table shift the mask
\r
1494 mov dx,[ss:sheight]
\r
1495 #ifdef __BORLANDC__
\r
1499 #ifdef __BORLANDC__
\r
1502 mov BYTE PTR [di],255 // 0xff first byte
\r
1503 mov cx,ss:[swidth]
\r
1504 #ifdef __BORLANDC__
\r
1508 #ifdef __BORLANDC__
\r
1511 mov al,[bx] // source
\r
1513 inc bx // next source byte
\r
1517 mov ax,[bp+si] // table shift into two bytes
\r
1519 and [di],al // and with first byte
\r
1521 mov [di],ah // replace next byte
\r
1525 inc di // the last shifted byte has 1s in it
\r
1528 #ifdef __BORLANDC__
\r
1532 #ifdef __BORLANDC__
\r
1536 // table shift the data
\r
1538 mov dx,ss:[sheight]
\r
1540 shl dx,1 // four planes of data
\r
1541 #ifdef __BORLANDC__
\r
1545 #ifdef __BORLANDC__
\r
1548 mov BYTE PTR [di],0 // 0 first byte
\r
1549 mov cx,ss:[swidth]
\r
1550 #ifdef __BORLANDC__
\r
1554 #ifdef __BORLANDC__
\r
1557 mov al,[bx] // source
\r
1558 inc bx // next source byte
\r
1562 mov ax,[bp+si] // table shift into two bytes
\r
1563 or [di],al // or with first byte
\r
1565 mov [di],ah // replace next byte
\r
1569 inc di // the last shifted byte has 0s in it
\r
1577 mov ax,ss // restore data segment
\r
1585 //===========================================================================
\r
1588 ======================
\r
1592 = Generate shifts and set up sprite structure for a given sprite
\r
1594 ======================
\r
1597 void CAL_CacheSprite (int chunk, byte far *compressed)
\r
1600 unsigned shiftstarts[5];
\r
1601 unsigned smallplane,bigplane,expanded;
\r
1602 spritetabletype far *spr;
\r
1603 spritetype _seg *dest;
\r
1605 #if GRMODE == CGAGR
\r
1607 // CGA has no pel panning, so shifts are never needed
\r
1609 spr = &spritetable[chunk-STARTSPRITES];
\r
1610 smallplane = spr->width*spr->height;
\r
1611 MM_GetPtr (&grsegs[chunk],smallplane*2+MAXSHIFTS*6);
\r
1614 dest = (spritetype _seg *)grsegs[chunk];
\r
1615 dest->sourceoffset[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1616 dest->planesize[0] = smallplane;
\r
1617 dest->width[0] = spr->width;
\r
1620 // expand the unshifted shape
\r
1622 CAL_HuffExpand (compressed, &dest->data[0],smallplane*2,gvar->ca.grhuffman);
\r
1627 #if GRMODE == EGAGR
\r
1630 // calculate sizes
\r
1632 spr = &spritetable[chunk-STARTSPRITES];
\r
1633 smallplane = spr->width*spr->height;
\r
1634 bigplane = (spr->width+1)*spr->height;
\r
1636 shiftstarts[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1637 shiftstarts[1] = shiftstarts[0] + smallplane*5; // 5 planes in a sprite
\r
1638 shiftstarts[2] = shiftstarts[1] + bigplane*5;
\r
1639 shiftstarts[3] = shiftstarts[2] + bigplane*5;
\r
1640 shiftstarts[4] = shiftstarts[3] + bigplane*5; // nothing ever put here
\r
1642 expanded = shiftstarts[spr->shifts];
\r
1643 MM_GetPtr (&grsegs[chunk],expanded);
\r
1646 dest = (spritetype _seg *)grsegs[chunk];
\r
1649 // expand the unshifted shape
\r
1651 CAL_HuffExpand (compressed, &dest->data[0],smallplane*5,gvar->ca.grhuffman);
\r
1654 // make the shifts!
\r
1656 switch (spr->shifts)
\r
1661 dest->sourceoffset[i] = shiftstarts[0];
\r
1662 dest->planesize[i] = smallplane;
\r
1663 dest->width[i] = spr->width;
\r
1670 dest->sourceoffset[i] = shiftstarts[0];
\r
1671 dest->planesize[i] = smallplane;
\r
1672 dest->width[i] = spr->width;
\r
1676 dest->sourceoffset[i] = shiftstarts[1];
\r
1677 dest->planesize[i] = bigplane;
\r
1678 dest->width[i] = spr->width+1;
\r
1680 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1681 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1685 dest->sourceoffset[0] = shiftstarts[0];
\r
1686 dest->planesize[0] = smallplane;
\r
1687 dest->width[0] = spr->width;
\r
1689 dest->sourceoffset[1] = shiftstarts[1];
\r
1690 dest->planesize[1] = bigplane;
\r
1691 dest->width[1] = spr->width+1;
\r
1692 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1693 dest->sourceoffset[1],spr->width,spr->height,2,true);
\r
1695 dest->sourceoffset[2] = shiftstarts[2];
\r
1696 dest->planesize[2] = bigplane;
\r
1697 dest->width[2] = spr->width+1;
\r
1698 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1699 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1701 dest->sourceoffset[3] = shiftstarts[3];
\r
1702 dest->planesize[3] = bigplane;
\r
1703 dest->width[3] = spr->width+1;
\r
1704 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1705 dest->sourceoffset[3],spr->width,spr->height,6,true);
\r
1710 Quit (gvar, "CAL_CacheSprite: Bad shifts number!");
\r
1716 //===========================================================================
\r
1720 ======================
\r
1722 = CAL_ExpandGrChunk
\r
1724 = Does whatever is needed with a pointer to a compressed chunk
\r
1726 ======================
\r
1729 void CAL_ExpandGrChunk (int chunk, byte far *source)
\r
1734 if (chunk >= STARTTILE8 && chunk < STARTEXTERNS)
\r
1737 // expanded sizes of tile8/16/32 are implicit
\r
1740 #if GRMODE == EGAGR
\r
1742 #define MASKBLOCK 40
\r
1745 #if GRMODE == CGAGR
\r
1747 #define MASKBLOCK 32
\r
1750 if (chunk<STARTTILE8M) // tile 8s are all in one chunk!
\r
1751 expanded = BLOCK*NUMTILE8;
\r
1752 else if (chunk<STARTTILE16)
\r
1753 expanded = MASKBLOCK*NUMTILE8M;
\r
1754 else if (chunk<STARTTILE16M) // all other tiles are one/chunk
\r
1755 expanded = BLOCK*4;
\r
1756 else if (chunk<STARTTILE32)
\r
1757 expanded = MASKBLOCK*4;
\r
1758 else if (chunk<STARTTILE32M)
\r
1759 expanded = BLOCK*16;
\r
1761 expanded = MASKBLOCK*16;
\r
1766 // everything else has an explicit size longword
\r
1768 expanded = *(long far *)source;
\r
1769 source += 4; // skip over length
\r
1773 // allocate final space, decompress it, and free bigbuffer
\r
1774 // Sprites need to have shifts made and various other junk
\r
1776 if (chunk>=STARTSPRITES && chunk< STARTTILE8)
\r
1777 CAL_CacheSprite(chunk,source);
\r
1780 MM_GetPtr (&grsegs[chunk],expanded);
\r
1783 CAL_HuffExpand (source,grsegs[chunk],expanded,gvar->ca.grhuffman);
\r
1789 ======================
\r
1793 = Gets a chunk off disk, optimizing reads to general buffer
\r
1795 ======================
\r
1798 void CAL_ReadGrChunk (int chunk)
\r
1800 long pos,compressed;
\r
1801 memptr bigbufferseg;
\r
1806 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1807 // a larger buffer
\r
1809 pos = GRFILEPOS(chunk,gvar);
\r
1810 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1814 while (GRFILEPOS(next,gvar) == -1) // skip past any sparse tiles
\r
1817 compressed = GRFILEPOS(next,gvar)-pos;
\r
1819 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
1821 if (compressed<=BUFFERSIZE)
\r
1823 CA_FarRead(gvar->ca.file.grhandle,bufferseg,compressed);
\r
1824 source = bufferseg;
\r
1828 MM_GetPtr(&bigbufferseg,compressed);
\r
1831 MM_SetLock (&bigbufferseg,true);
\r
1832 CA_FarRead(gvar->ca.file.grhandle,bigbufferseg,compressed);
\r
1833 source = bigbufferseg;
\r
1836 CAL_ExpandGrChunk (chunk,source);
\r
1838 if (compressed>BUFFERSIZE)
\r
1839 MM_FreePtr(&bigbufferseg);
\r
1843 ======================
\r
1847 = Makes sure a given chunk is in memory, loadiing it if needed
\r
1849 ======================
\r
1852 void CA_CacheGrChunk (int chunk)
\r
1854 long pos,compressed;
\r
1855 memptr bigbufferseg;
\r
1859 gvar->ca.grneeded[chunk] |= ca_levelbit; // make sure it doesn't get removed
\r
1860 if (grsegs[chunk])
\r
1862 MM_SetPurge (&grsegs[chunk],0);
\r
1863 return; // allready in memory
\r
1866 // MDM begin - (GAMERS EDGE)
\r
1868 if (!FindFile("EGAGRAPH.16",NULL,2))
\r
1869 Quit (gvar, "CA_CacheGrChunk(): Can't find graphics files.");
\r
1874 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1875 // a larger buffer
\r
1877 pos = GRFILEPOS(chunk,gvar);
\r
1878 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1882 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1885 compressed = GRFILEPOS(next,gvar)-pos;
\r
1887 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
1889 if (compressed<=BUFFERSIZE)
\r
1891 CA_FarRead(gvar->ca.file.grhandle,bufferseg,compressed);
\r
1892 source = bufferseg;
\r
1896 MM_GetPtr(&bigbufferseg,compressed);
\r
1897 MM_SetLock (&bigbufferseg,true);
\r
1898 CA_FarRead(gvar->ca.file.grhandle,bigbufferseg,compressed);
\r
1899 source = bigbufferseg;
\r
1902 CAL_ExpandGrChunk (chunk,source);
\r
1904 if (compressed>BUFFERSIZE)
\r
1905 MM_FreePtr(&bigbufferseg);
\r
1910 //==========================================================================
\r
1913 ======================
\r
1917 ======================
\r
1920 void CA_CacheMap (global_game_variables_t *gvar)
\r
1922 long pos,compressed;
\r
1924 memptr *dest,bigbufferseg;
\r
1926 unsigned far *source;
\r
1927 #ifdef MAPHEADERLINKED
\r
1928 memptr buffer2seg;
\r
1934 // free up memory from last map
\r
1936 if (gvar->ca.camap.mapon>-1 && gvar->ca.camap.mapheaderseg[gvar->ca.camap.mapon])
\r
1937 MM_SetPurge (((memptr)gvar->ca.camap.mapheaderseg[(gvar->ca.camap.mapon)]), 3, gvar);
\r
1938 for (plane=0;plane<MAPPLANES;plane++)
\r
1939 if (gvar->ca.camap.mapsegs[plane])
\r
1940 MM_FreePtr ((memptr)gvar->ca.camap.mapsegs[plane], gvar);
\r
1942 gvar->ca.camap.mapon = gvar->ca.camap.mapnum;
\r
1946 // load map header
\r
1947 // The header will be cached if it is still around
\r
1949 // if (!gvar->ca.camap.mapheaderseg[gvar->ca.camap.mapnum])
\r
1951 // //pos = ((mapfiletype _seg *)tinf)->headeroffsets[mapnum];
\r
1952 // //pos = ((_seg *)gvar->ca.camap.tinf)->headeroffsets[gvar->ca.camap.mapnum];
\r
1953 // pos = ((memptr)gvar->ca.camap.tinf)->headeroffsets[gvar->ca.camap.mapnum];
\r
1954 // if (pos<0) // $FFFFFFFF start is a sparse map
\r
1955 // printf("CA_CacheMap: Tried to load a non existent map!");
\r
1957 // MM_GetPtr(MEMPTRCONV gvar->ca.camapheaderseg[mapnum],sizeof(maptype));
\r
1958 // lseek(maphandle,pos,SEEK_SET);
\r
1959 // CA_FarRead (maphandle,(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1962 // MM_SetPurge (MEMPTRCONV mapheaderseg[mapnum], 0, &(gvar->mm));
\r
1965 // load the planes in
\r
1966 // If a plane's pointer still exists it will be overwritten (levels are
\r
1967 // allways reloaded, never cached)
\r
1970 size = mapheaderseg[mapnum]->width * mapheaderseg[mapnum]->height * 2;
\r
1972 for (plane = 0; plane<MAPPLANES; plane++)
\r
1974 //pos = mapheaderseg[mapnum]->planestart[plane];
\r
1975 //compressed = mapheaderseg[mapnum]->planelength[plane];
\r
1978 continue; // the plane is not used in this game
\r
1980 dest = MEMPTRCONV mapsegs[plane];
\r
1981 MM_GetPtr(dest,size);
\r
1983 lseek(maphandle,pos,SEEK_SET);
\r
1984 if (compressed<=BUFFERSIZE)
\r
1985 source = bufferseg;
\r
1988 MM_GetPtr(&bigbufferseg,compressed);
\r
1989 MM_SetLock (&bigbufferseg,true);
\r
1990 source = bigbufferseg;
\r
1993 CA_FarRead(maphandle,(byte far *)source,compressed);
\r
1994 #ifdef MAPHEADERLINKED
\r
1996 // unhuffman, then unRLEW
\r
1997 // The huffman'd chunk has a two byte expanded length first
\r
1998 // The resulting RLEW chunk also does, even though it's not really
\r
2001 expanded = *source;
\r
2003 MM_GetPtr (&buffer2seg,expanded);
\r
2004 CAL_CarmackExpand (source, (unsigned far *)buffer2seg,expanded);
\r
2005 CA_RLEWexpand (((unsigned far *)buffer2seg)+1,*dest,size,
\r
2006 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
2007 MM_FreePtr (&buffer2seg);
\r
2011 // unRLEW, skipping expanded length
\r
2013 CA_RLEWexpand (source+1, *dest,size,
\r
2014 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
2017 if (compressed>BUFFERSIZE)
\r
2018 MM_FreePtr(&bigbufferseg);
\r
2022 //===========================================================================
\r
2025 ======================
\r
2029 = Goes up a bit level in the needed lists and clears it out.
\r
2030 = Everything is made purgable
\r
2032 ======================
\r
2035 void CA_UpLevel (global_game_variables_t *gvar)
\r
2037 if (gvar->ca.ca_levelnum==7)
\r
2038 printf("CA_UpLevel: Up past level 7!");
\r
2040 gvar->ca.ca_levelbit<<=1;
\r
2041 gvar->ca.ca_levelnum++;
\r
2044 //===========================================================================
\r
2047 ======================
\r
2051 = Goes down a bit level in the needed lists and recaches
\r
2052 = everything from the lower level
\r
2054 ======================
\r
2057 void CA_DownLevel (global_game_variables_t *gvar)
\r
2059 if (!gvar->ca.ca_levelnum)
\r
2060 printf("CA_DownLevel: Down past level 0!");
\r
2061 gvar->ca.ca_levelbit>>=1;
\r
2062 gvar->ca.ca_levelnum--;
\r
2063 ////++++++++++++++++++++++++++++++++++++++++++CA_CacheMarks(NULL);
\r
2066 //===========================================================================
\r
2069 ======================
\r
2073 = Clears out all the marks at the current level
\r
2075 ======================
\r
2078 void CA_ClearMarks (global_game_variables_t *gvar)
\r
2082 for (i=0;i<NUMCHUNKS;i++)
\r
2083 gvar->ca.grneeded[i]&=~gvar->ca.ca_levelbit;
\r
2086 //===========================================================================
\r
2089 ======================
\r
2091 = CA_ClearAllMarks
\r
2093 = Clears out all the marks on all the levels
\r
2095 ======================
\r
2098 void CA_ClearAllMarks (global_game_variables_t *gvar)
\r
2100 _fmemset (gvar->ca.grneeded,0,sizeof(gvar->ca.grneeded));
\r
2101 gvar->ca.ca_levelbit = 1;
\r
2102 gvar->ca.ca_levelnum = 0;
\r
2105 //===========================================================================
\r
2108 ======================
\r
2112 ======================
\r
2115 void CA_SetGrPurge (global_game_variables_t *gvar)
\r
2122 CA_ClearMarks (gvar);
\r
2124 for (i=0;i<NUMCHUNKS;i++)
\r
2125 if (gvar->ca.grsegs[i])
\r
2126 MM_SetPurge (gvar->ca.grsegs[i],3, gvar);
\r
2131 ======================
\r
2135 = Make everything possible purgable
\r
2137 ======================
\r
2140 void CA_SetAllPurge (global_game_variables_t *gvar)
\r
2144 CA_ClearMarks (gvar);
\r
2147 // free cursor sprite and background save
\r
2149 //____VW_FreeCursor ();
\r
2152 // free map headers and map planes
\r
2154 // for (i=0;i<NUMMAPS;i++)
\r
2155 // if (gvar->ca.camap.mapheaderseg[i])
\r
2156 // MM_SetPurge (gvar->ca.camap.mapheaderseg[i],3, gvar);
\r
2159 if (gvar->ca.mapsegs[i])
\r
2160 MM_FreePtr ((memptr *)&gvar->ca.mapsegs[i], gvar);
\r
2165 for (i=0;i<NUMSNDCHUNKS;i++)
\r
2166 if (gvar->ca.audiosegs[i])
\r
2167 MM_SetPurge ((memptr *)&gvar->ca.audiosegs[i],3, gvar);
\r
2172 CA_SetGrPurge (gvar);
\r
2176 //===========================================================================
\r
2180 ======================
\r
2184 ======================
\r
2187 #define NUMBARS (17l*8)
\r
2190 unsigned thx,thy,lastx;
\r
2191 long barx,barstep;
\r
2193 void CAL_DialogDraw (char *title,unsigned numcache)
\r
2195 unsigned homex,homey,x;
\r
2197 barstep = (NUMBARS<<16)/numcache;
\r
2200 // draw dialog window (masked tiles 12 - 20 are window borders)
\r
2202 US_CenterWindow (20,8);
\r
2206 US_CPrint ("Loading");
\r
2207 fontcolor = F_SECONDCOLOR;
\r
2208 US_CPrint (title);
\r
2209 fontcolor = F_BLACK;
\r
2212 // draw thermometer bar
\r
2216 VWB_DrawTile8(thx,thy,0); // CAT3D numbers
\r
2217 VWB_DrawTile8(thx,thy+8,3);
\r
2218 VWB_DrawTile8(thx,thy+16,6);
\r
2219 VWB_DrawTile8(thx+17*8,thy,2);
\r
2220 VWB_DrawTile8(thx+17*8,thy+8,5);
\r
2221 VWB_DrawTile8(thx+17*8,thy+16,8);
\r
2222 for (x=thx+8;x<thx+17*8;x+=8)
\r
2224 VWB_DrawTile8(x,thy,1);
\r
2225 VWB_DrawTile8(x,thy+8,4);
\r
2226 VWB_DrawTile8(x,thy+16,7);
\r
2229 thx += 4; // first line location
\r
2231 barx = (long)thx<<16;
\r
2234 VW_UpdateScreen();
\r
2239 ======================
\r
2241 = CAL_DialogUpdate
\r
2243 ======================
\r
2246 void CAL_DialogUpdate (void)
\r
2252 if (xh - lastx > BARSTEP)
\r
2254 for (x=lastx;x<=xh;x++)
\r
2255 #if GRMODE == EGAGR
\r
2256 VWB_Vlin (thy,thy+13,x,14);
\r
2258 #if GRMODE == CGAGR
\r
2259 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2262 VW_UpdateScreen();
\r
2267 ======================
\r
2269 = CAL_DialogFinish
\r
2271 ======================
\r
2274 void CAL_DialogFinish (void)
\r
2278 xh = thx + NUMBARS;
\r
2279 for (x=lastx;x<=xh;x++)
\r
2280 #if GRMODE == EGAGR
\r
2281 VWB_Vlin (thy,thy+13,x,14);
\r
2283 #if GRMODE == CGAGR
\r
2284 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2286 VW_UpdateScreen();
\r
2290 //===========================================================================
\r
2293 ======================
\r
2297 ======================
\r
2299 #define MAXEMPTYREAD 1024
\r
2301 void CAL_CacheMarks (char *title, global_game_variables_t *gvar)
\r
2304 int i,next,numcache;
\r
2305 long pos,endpos,nextpos,nextendpos,compressed;
\r
2306 long bufferstart,bufferend; // file position of general buffer
\r
2308 memptr bigbufferseg;
\r
2310 dialog = (title!=NULL);
\r
2314 // go through and make everything not needed purgable
\r
2316 for (i=0;i<NUMCHUNKS;i++)
\r
2317 if (gvar->ca.grneeded[i]&(gvar->ca.ca_levelbit))//if (grneeded[i]&ca_levelbit)
\r
2319 if (gvar->ca.grsegs[i]) // its allready in memory, make
\r
2320 MM_SetPurge(gvar->ca.grsegs[i],0,gvar); // sure it stays there!
\r
2326 if (gvar->ca.grsegs[i]) // not needed, so make it purgeable
\r
2327 MM_SetPurge(gvar->ca.grsegs[i],3,gvar);
\r
2330 if (!numcache) // nothing to cache!
\r
2333 // MDM begin - (GAMERS EDGE)
\r
2335 // if (!FindFile("EGAGRAPH.16",NULL,2))
\r
2336 // Quit (gvar, "CA_CacheMarks(): Can't find graphics files.");
\r
2343 write(profilehandle,title,strlen(title));
\r
2344 write(profilehandle,"\n",1);
\r
2347 drawcachebox(title,numcache);
\r
2351 // go through and load in anything still needed
\r
2353 bufferstart = bufferend = 0; // nothing good in buffer now
\r
2355 for (i=0;i<NUMCHUNKS;i++)
\r
2356 if ( (gvar->ca.grneeded[i]&(gvar->ca.ca_levelbit)) && !gvar->ca.grsegs[i])
\r
2359 // update thermometer
\r
2361 if (dialog && updatecachebox)
\r
2362 updatecachebox ();
\r
2364 pos = GRFILEPOS(i,gvar);
\r
2369 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
2372 compressed = GRFILEPOS(next,gvar)-pos;
\r
2373 endpos = pos+compressed;
\r
2375 if (compressed<=BUFFERSIZE)
\r
2377 if (bufferstart<=pos
\r
2378 && bufferend>= endpos)
\r
2380 // data is allready in buffer
\r
2381 source = (byte _seg *)bufferseg+(pos-bufferstart);
\r
2385 // load buffer with a new block from disk
\r
2386 // try to get as many of the needed blocks in as possible
\r
2387 while ( next < NUMCHUNKS )
\r
2389 while (next < NUMCHUNKS &&
\r
2390 !(gvar->video.grneeded[next]&ca_levelbit && !grsegs[next]))
\r
2392 if (next == NUMCHUNKS)
\r
2395 nextpos = GRFILEPOS(next,gvar);
\r
2396 while (GRFILEPOS(++next,gvar) == -1) // skip past any sparse tiles
\r
2398 nextendpos = GRFILEPOS(next,gvar);
\r
2399 if (nextpos - endpos <= MAXEMPTYREAD
\r
2400 && nextendpos-pos <= BUFFERSIZE)
\r
2401 endpos = nextendpos;
\r
2403 next = NUMCHUNKS; // read pos to posend
\r
2406 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
2407 CA_FarRead(gvar->ca.file.grhandle,(gvar->mm.bufferseg),endpos-pos,gvar);
\r
2408 bufferstart = pos;
\r
2409 bufferend = endpos;
\r
2410 source = bufferseg;
\r
2415 // big chunk, allocate temporary buffer
\r
2416 MM_GetPtr(&bigbufferseg,compressed,gvar);
\r
2419 MM_SetLock (&bigbufferseg,true);
\r
2420 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
2421 CA_FarRead(gvar->ca.file.grhandle,bigbufferseg,compressed,gvar);
\r
2422 source = bigbufferseg;
\r
2425 CAL_ExpandGrChunk (i,source);
\r
2429 if (compressed>BUFFERSIZE)
\r
2430 MM_FreePtr(&bigbufferseg);
\r
2435 // finish up any thermometer remnants
\r
2437 if (dialog && finishcachebox)
\r
2441 void CA_CannotOpen(char *string, global_game_variables_t *gvar)
\r
2445 strcpy(str,"Can't open ");
\r
2446 strcat(str,string);
\r
2447 strcat(str,"!\n");
\r