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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166 #define EXTENSION "hb1"
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169 =============================================================================
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173 =============================================================================
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177 ============================
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179 = CA_OpenDebug / CA_CloseDebug
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181 = Opens a binary file with the handle "debughandle"
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183 ============================
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185 void CA_OpenDebug(global_game_variables_t *gvar)
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187 #ifdef __BORLANDC__
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188 unlink("debug.16b");
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189 gvar->handle.debughandle = open("debug.16b", O_CREAT | O_WRONLY | O_TEXT);
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192 unlink("debug.16w");
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193 gvar->handle.debughandle = open("debug.16w", O_CREAT | O_WRONLY | O_TEXT);
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197 void CA_CloseDebug(global_game_variables_t *gvar)
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199 close(gvar->handle.debughandle);
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205 ============================
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207 = CAL_GetGrChunkLength
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209 = Gets the length of an explicit length chunk (not tiles)
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210 = The file pointer is positioned so the compressed data can be read in next.
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212 ============================
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215 void CAL_GetGrChunkLength (int chunk,global_game_variables_t *gvar)
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217 lseek(gvar->ca.file.grhandle,GRFILEPOS(chunk,gvar),SEEK_SET);
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218 read(gvar->ca.file.grhandle,&gvar->ca.chunkexplen,sizeof(gvar->ca.chunkexplen));
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219 gvar->ca.chunkcomplen = GRFILEPOS(chunk+1,gvar)-GRFILEPOS(chunk,gvar)-4;
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224 ==========================
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228 = Read from a file to a far pointer
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230 ==========================
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233 boolean CA_FarRead(int handle, byte far *dest, dword length, global_game_variables_t *gvar)
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236 if (length>0xfffflu)
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237 Quit (gvar, "CA_FarRead doesn't support 64K reads yet!");//TODO: EXPAND!!!
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242 mov cx,[WORD PTR length]
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243 mov dx,[WORD PTR dest]
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244 mov ds,[WORD PTR dest+2]
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245 mov ah,0x3f // READ w/handle
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252 #ifdef __BORLANDC__
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256 #ifdef __BORLANDC__
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259 cmp ax,[WORD PTR length]
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261 // errno = EINVFMT; // user manager knows this is bad read
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264 #ifdef __BORLANDC__
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268 #ifdef __BORLANDC__
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272 #ifdef __BORLANDC__
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284 ==========================
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288 = Write from a file to a far pointer
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290 ==========================
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293 boolean CA_FarWrite(int handle, byte far *source, dword length, global_game_variables_t *gvar)
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296 if (length>0xfffflu)
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297 Quit (gvar, "CA_FarWrite doesn't support 64K reads yet!");//TODO: EXPAND!!!
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302 mov cx,[WORD PTR length]
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303 mov dx,[WORD PTR source]
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304 mov ds,[WORD PTR source+2]
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305 mov ah,0x40 // WRITE w/handle
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312 #ifdef __BORLANDC__
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316 #ifdef __BORLANDC__
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319 cmp ax,[WORD PTR length]
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321 // errno = ENOMEM; // user manager knows this is bad write
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324 #ifdef __BORLANDC__
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328 #ifdef __BORLANDC__
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332 #ifdef __BORLANDC__
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344 ==========================
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348 = Reads a file into an allready allocated buffer
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350 ==========================
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353 boolean CA_ReadFile(char *filename, memptr *ptr, global_game_variables_t *gvar)
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359 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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362 size = filelength(handle);
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363 #ifdef __DEBUG_CA__
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365 printf("===============================================================================\n");
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366 printf(" CA_ReadFile\n");
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367 printf("===============================================================================\n");
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369 printf(" ptr=%Fp\n", ptr);
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370 printf(" *ptr=%Fp\n", *ptr);
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371 printf(" &ptr=%Fp\n", &ptr);
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374 if(!CA_FarRead(handle,*ptr,size, gvar))
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385 ==========================
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389 = Writes a file from a memory buffer
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391 ==========================
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394 boolean CA_WriteFile (char *filename, void far *ptr, long length, global_game_variables_t *gvar)
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400 handle = open(filename,O_CREAT | O_BINARY | O_WRONLY,
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401 S_IREAD | S_IWRITE | S_IFREG);
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406 if (!CA_FarWrite (handle,ptr,length, gvar))
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418 ==========================
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422 = Allocate space for and load a file
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424 ==========================
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427 boolean CA_LoadFile(char *filename, memptr *ptr, global_game_variables_t *gvar)
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433 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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436 size = filelength(handle);
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437 #ifdef __DEBUG_CA__
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439 printf("===============================================================================\n");
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440 printf(" CA_LoadFile\n");
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441 printf("===============================================================================\n");
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443 printf(" ptr=%Fp\n", ptr);
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444 printf(" *ptr=%Fp\n", *ptr);
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445 printf(" &ptr=%Fp\n", &ptr);
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448 MM_GetPtr(ptr,size, gvar);
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449 #ifdef __DEBUG_CA__
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452 printf("---------------------------------------\n");
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453 printf(" ptr=%Fp\n", ptr);
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454 printf(" *ptr=%Fp\n", *ptr);
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455 printf(" &ptr=%Fp\n", &ptr);
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456 printf("-------------------------------------------------------------------------------\n");
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459 if(!CA_FarRead(handle,*ptr,size, gvar))
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469 ============================================================================
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471 COMPRESSION routines, see JHUFF.C for more
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473 ============================================================================
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481 = CAL_OptimizeNodes
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483 = Goes through a huffman table and changes the 256-511 node numbers to the
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484 = actular address of the node. Must be called before CAL_HuffExpand
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489 void CAL_OptimizeNodes(huffnode *table)
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496 for (i=0;i<255;i++)
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498 if (node->bit0 >= 256)
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499 node->bit0 = (unsigned)(table+(node->bit0-256));
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500 if (node->bit1 >= 256)
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501 node->bit1 = (unsigned)(table+(node->bit1-256));
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509 ======================
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513 = Length is the length of the EXPANDED data
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515 ======================
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518 void CAL_HuffExpand (byte far *source, byte far *dest,
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519 long length,huffnode *hufftable)
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521 // unsigned bit,byte,node,code;
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522 unsigned sourceseg,sourceoff,destseg,destoff,endoff;
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524 // huffnode *nodeon;
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526 headptr = hufftable+254; // head node is allways node 254
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528 source++; // normalize
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533 sourceseg = FP_SEG(source);
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534 sourceoff = FP_OFF(source);
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535 destseg = FP_SEG(dest);
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536 destoff = FP_OFF(dest);
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537 endoff = destoff+length;
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542 // ss:bx node pointer
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545 if (length <0xfff0)
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548 //--------------------------
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549 // expand less than 64k of data
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550 //--------------------------
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553 mov bx,[word ptr headptr]
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561 mov ch,[si] // load first byte
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564 #ifdef __BORLANDC__
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568 #ifdef __BORLANDC__
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571 test ch,cl // bit set?
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573 mov dx,[ss:bx] // take bit0 path from node
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574 shl cl,1 // advance to next bit position
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577 #ifdef __BORLANDC__
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581 #ifdef __BORLANDC__
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584 mov dx,[ss:bx+2] // take bit1 path
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585 shl cl,1 // advance to next bit position
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587 #ifdef __BORLANDC__
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591 #ifdef __BORLANDC__
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594 mov ch,[si] // load next byte
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596 mov cl,1 // back to first bit
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597 #ifdef __BORLANDC__
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601 #ifdef __BORLANDC__
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604 or dh,dh // if dx<256 its a byte, else move node
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606 mov bx,dx // next node = (huffnode *)code
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608 #ifdef __BORLANDC__
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612 #ifdef __BORLANDC__
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616 inc di // write a decopmpressed byte out
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617 mov bx,[word ptr headptr] // back to the head node for next bit
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626 //--------------------------
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627 // expand more than 64k of data
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628 //--------------------------
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633 mov bx,[word ptr headptr]
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641 lodsb // load first byte
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642 #ifdef __BORLANDC__
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646 #ifdef __BORLANDC__
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649 test al,cl // bit set?
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651 mov dx,[ss:bx] // take bit0 path from node
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653 #ifdef __BORLANDC__
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657 #ifdef __BORLANDC__
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660 mov dx,[ss:bx+2] // take bit1 path
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661 #ifdef __BORLANDC__
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665 #ifdef __BORLANDC__
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668 shl cl,1 // advance to next bit position
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671 cmp si,0x10 // normalize ds:si
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677 #ifdef __BORLANDC__
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681 #ifdef __BORLANDC__
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684 mov cl,1 // back to first bit
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685 #ifdef __BORLANDC__
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689 #ifdef __BORLANDC__
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692 or dh,dh // if dx<256 its a byte, else move node
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694 mov bx,dx // next node = (huffnode *)code
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696 #ifdef __BORLANDC__
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700 #ifdef __BORLANDC__
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704 inc di // write a decopmpressed byte out
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705 mov bx,[word ptr headptr] // back to the head node for next bit
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707 cmp di,0x10 // normalize es:di
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713 #ifdef __BORLANDC__
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717 #ifdef __BORLANDC__
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720 sub [WORD PTR ss:length],1
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722 dec [WORD PTR ss:length+2]
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723 jns expand // when length = ffff ffff, done
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736 ======================
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738 = CAL_CarmackExpand
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740 = Length is the length of the EXPANDED data
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742 ======================
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745 #define NEARTAG 0xa7
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746 #define FARTAG 0xa8
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748 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest, unsigned length)
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750 unsigned ch,chhigh,count,offset;
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751 unsigned far *copyptr, far *inptr, far *outptr;
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762 if (chhigh == NEARTAG)
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766 { // have to insert a word containing the tag byte
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767 ch |= *(/*(unsigned char far *)*/inptr)++;
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773 offset = *(/*(unsigned char far *)*/inptr)++;
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774 copyptr = outptr - offset;
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777 *outptr++ = *copyptr++;
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780 else if (chhigh == FARTAG)
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784 { // have to insert a word containing the tag byte
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785 ch |= *(/*(unsigned char far *)*/inptr)++;
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792 copyptr = dest + offset;
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795 *outptr++ = *copyptr++;
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808 ======================
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812 ======================
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815 long CA_RLEWCompress (unsigned far *source, long length, unsigned far *dest,
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819 unsigned value,count,i;
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820 unsigned far *start,far *end;
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824 end = source + (length+1)/2;
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833 while (*source == value && source<end)
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838 if (count>3 || value == rlewtag)
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841 // send a tag / count / value string
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850 // send word without compressing
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852 for (i=1;i<=count;i++)
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856 } while (source<end);
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858 complength = 2*(dest-start);
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864 ======================
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867 = length is EXPANDED length
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869 ======================
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872 void CA_RLEWexpand (unsigned far *source, unsigned far *dest,long length,
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875 // unsigned value,count,i;
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877 unsigned sourceseg,sourceoff,destseg,destoff,endseg,endoff;
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887 if (value != rlewtag)
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895 // compressed string
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899 for (i=1;i<=count;i++)
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902 } while (dest<end);
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905 end = dest + (length)/2;
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906 sourceseg = FP_SEG(source);
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907 sourceoff = FP_OFF(source);
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908 destseg = FP_SEG(dest);
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909 destoff = FP_OFF(dest);
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910 endseg = FP_SEG(end);
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911 endoff = FP_OFF(end);
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915 // ax = source value
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917 // cx = repeat counts
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920 // NOTE: A repeat count that produces 0xfff0 bytes can blow this!
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928 #ifdef __BORLANDC__
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932 #ifdef __BORLANDC__
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940 #ifdef __BORLANDC__
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944 #ifdef __BORLANDC__
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948 mov cx,ax // repeat count
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949 lodsw // repeat value
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951 #ifdef __BORLANDC__
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955 #ifdef __BORLANDC__
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958 cmp si,0x10 // normalize ds:si
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969 #ifdef __BORLANDC__
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973 #ifdef __BORLANDC__
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976 cmp di,0x10 // normalize es:di
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987 #ifdef __BORLANDC__
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991 #ifdef __BORLANDC__
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1007 =============================================================================
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1009 CACHE MANAGER ROUTINES
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1011 =============================================================================
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1015 ======================
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1019 ======================
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1022 void CAL_SetupGrFile (global_game_variables_t *gvar)
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1030 #ifdef GRHEADERLINKED
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1032 gvar->ca.grhuffman = (huffnode *)&VGAdict;
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1033 grstarts = (long _seg *)FP_SEG(&VGAhead);
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1035 CAL_OptimizeNodes (gvar->ca.grhuffman);
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1040 // load ???dict.ext (huffman dictionary for graphics files)
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1043 strcpy(fname,GDICTNAME);
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1044 strcat(fname,EXTENSION);
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1046 if ((handle = open(fname,
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1047 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1048 CA_CannotOpen(fname,gvar);
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1050 read(handle, &gvar->ca.grhuffman, sizeof(gvar->ca.grhuffman));
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1052 CAL_OptimizeNodes (gvar->ca.grhuffman);
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1054 // load the data offsets from ???head.ext
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1056 MM_GetPtr (MEMPTRCONV gvar->ca.grstarts,(NUMCHUNKS+1)*FILEPOSSIZE, gvar);
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1058 strcpy(fname,GHEADNAME);
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1059 strcat(fname,EXTENSION);
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1061 if ((handle = open(fname,
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1062 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1063 CA_CannotOpen(fname,gvar);
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1065 CA_FarRead(handle, (memptr)gvar->ca.grstarts, (NUMCHUNKS+1)*FILEPOSSIZE, gvar);
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1073 // Open the graphics file, leaving it open until the game is finished
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1075 strcpy(fname,GFILENAME);
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1076 strcat(fname,EXTENSION);
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1078 gvar->ca.file.grhandle = open(fname, O_RDONLY | O_BINARY);
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1079 if (gvar->ca.file.grhandle == -1)
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1080 CA_CannotOpen(fname,gvar);
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1084 // load the pic and sprite headers into the arrays in the data segment
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1087 MM_GetPtr(MEMPTRCONV gvar->video.pictable,NUMPICS*sizeof(pictabletype),gvar);
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1088 CAL_GetGrChunkLength(STRUCTPIC,gvar); // position file pointer
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1089 printf("CAL_SetupGrFile:\n");
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1090 printf(" gvar->ca.chunkcomplen size is %lu\n", gvar->ca.chunkcomplen);
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1091 MM_GetPtr(MEMPTRANDPERCONV compseg,gvar->ca.chunkcomplen,gvar); IN_Ack(gvar);
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1092 CA_FarRead (gvar->ca.file.grhandle,compseg,gvar->ca.chunkcomplen,gvar);
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1093 CAL_HuffExpand (compseg, (byte far *)gvar->video.pictable,NUMPICS*sizeof(pictabletype),gvar->ca.grhuffman);
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1094 MM_FreePtr(MEMPTRANDPERCONV compseg,gvar);
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1099 MM_GetPtr(MEMPTRCONV picmtable,NUMPICM*sizeof(pictabletype));
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1100 CAL_GetGrChunkLength(STRUCTPICM); // position file pointer
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1101 MM_GetPtr(&compseg,gvar->ca.chunkcomplen);
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1102 CA_FarRead (gvar->ca.file.grhandle,compseg,gvar->ca.chunkcomplen);
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1103 CAL_HuffExpand (compseg, (byte far *)picmtable,NUMPICS*sizeof(pictabletype),gvar->ca.grhuffman);
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1104 MM_FreePtr(&compseg);
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1107 //#if NUMSPRITES>0
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1108 MM_GetPtr(MEMPTRCONV spritetable,NUMSPRITES*sizeof(spritetabletype));
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1109 CAL_GetGrChunkLength(STRUCTSPRITE); // position file pointer
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1110 MM_GetPtr(&compseg,gvar->ca.chunkcomplen);
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1111 CA_FarRead (gvar->ca.file.grhandle,compseg,gvar->ca.chunkcomplen);
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1112 CAL_HuffExpand (compseg, (byte far *)spritetable,NUMSPRITES*sizeof(spritetabletype),gvar->ca.grhuffman);
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1113 MM_FreePtr(&compseg);
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1118 //==========================================================================
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1122 ======================
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1124 = CAL_SetupMapFile
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1126 ======================
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1129 void CAL_SetupMapFile (global_game_variables_t *gvar)
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1131 #ifndef MAPHEADERLINKED
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1137 // load maphead.ext (offsets and tileinfo for map file)
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1139 #ifndef MAPHEADERLINKED
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1140 if ((handle = open("maphead.mph",
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1141 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1142 Quit (gvar, "Can't open maphead.mph");
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1143 length = filelength(handle);
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1144 MM_GetPtr (MEMPTRCONV gvar->ca.tinf,length,gvar);
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1145 CA_FarRead(handle, gvar->ca.tinf, length,gvar);
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1149 gvar->ca.tinf = (byte _seg *)FP_SEG(&maphead);
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1154 // open the data file
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1156 //TODO: multiple files
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1157 if ((gvar->ca.file.maphandle = open("data/test.map",
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1158 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1159 Quit (gvar, "Can't open data/test.map!");
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1160 /*#ifdef MAPHEADERLINKED
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1161 if ((maphandle = open("GAMEMAPS.16"ENSION,
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1162 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1163 Quit (gvar, "Can't open GAMEMAPS.16"ENSION"!");
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1165 if ((maphandle = open("MAPTEMP.16"ENSION,
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1166 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1167 Quit (gvar, "Can't open MAPTEMP.16"ENSION"!");
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1171 //==========================================================================
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1175 ======================
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1177 = CAL_SetupAudioFile
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1179 ======================
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1182 /*void CAL_SetupAudioFile (void)
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1188 // load maphead.ext (offsets and tileinfo for map file)
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1190 #ifndef AUDIOHEADERLINKED
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1191 if ((handle = open("AUDIOHED.16",
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1192 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1193 Quit (gvar, "Can't open AUDIOHED.16""!");
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1194 length = filelength(handle);
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1195 MM_GetPtr (MEMPTRCONV audiostarts,length);
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1196 CA_FarRead(handle, (byte far *)audiostarts, length);
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1199 audiohuffman = (huffnode *)&audiodict;
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1200 CAL_OptimizeNodes (audiohuffman);
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1201 audiostarts = (long _seg *)FP_SEG(&audiohead);
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1205 // open the data file
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1207 #ifndef AUDIOHEADERLINKED
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1208 if ((audiohandle = open("AUDIOT.16",
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1209 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1210 Quit (gvar, "Can't open AUDIOT.16""!");
\r
1212 if ((audiohandle = open("AUDIO.16",
\r
1213 O_RDONLY | O_BINARY, S_IREAD)) == -1)
\r
1214 Quit (gvar, "Can't open AUDIO.16""!");
\r
1218 //==========================================================================
\r
1222 ======================
\r
1226 = Open all files and load in headers
\r
1228 ======================
\r
1231 void CA_Startup(global_game_variables_t *gvar)
\r
1234 #ifdef __BORLANDC__
\r
1235 unlink("profile.16b");
\r
1236 gvar->handle.profilehandle = open("profile.16b", O_CREAT | O_WRONLY | O_TEXT);
\r
1238 #ifdef __WATCOMC__
\r
1239 unlink("profile.16w");
\r
1240 gvar->handle.profilehandle = open("profile.16w", O_CREAT | O_WRONLY | O_TEXT);
\r
1244 #ifdef __BORLANDC__
\r
1245 unlink("meminfo.16b");
\r
1246 gvar->handle.showmemhandle = open("meminfo.16b", O_CREAT | O_WRONLY | O_TEXT);
\r
1248 #ifdef __WATCOMC__
\r
1249 unlink("meminfo.16w");
\r
1250 gvar->handle.showmemhandle = open("meminfo.16w", O_CREAT | O_WRONLY | O_TEXT);
\r
1255 CAL_SetupMapFile (gvar);
\r
1257 #ifndef NOGRAPHICS
\r
1258 CAL_SetupGrFile (gvar);
\r
1261 CAL_SetupMapFile (gvar);
\r
1264 gvar->ca.mapon = -1;
\r
1265 gvar->ca.ca_levelbit = 1;
\r
1266 gvar->ca.ca_levelnum = 0;
\r
1268 /* drawcachebox = CAL_DialogDraw;
\r
1269 updatecachebox = CAL_DialogUpdate;
\r
1270 finishcachebox = CAL_DialogFinish;*/
\r
1273 //==========================================================================
\r
1277 ======================
\r
1281 = Closes all files
\r
1283 ======================
\r
1286 void CA_Shutdown(global_game_variables_t *gvar)
\r
1289 close(gvar->handle.profilehandle);
\r
1291 close(gvar->handle.showmemhandle);
\r
1293 close(gvar->ca.file.maphandle);
\r
1294 close(gvar->ca.file.grhandle);
\r
1295 close(gvar->ca.file.audiohandle);
\r
1298 //===========================================================================
\r
1301 ======================
\r
1303 = CA_CacheAudioChunk
\r
1305 ======================
\r
1308 void CA_CacheAudioChunk (int chunk)
\r
1310 long pos,compressed;
\r
1311 #ifdef AUDIOHEADERLINKED
\r
1313 memptr bigbufferseg;
\r
1317 if (audiosegs[chunk])
\r
1319 MM_SetPurge (MEMPTRCONV audiosegs[chunk],0);
\r
1320 return; // allready in memory
\r
1323 // MDM begin - (GAMERS EDGE)
\r
1325 if (!FindFile("AUDIO.16",NULL,2))
\r
1326 Quit (gvar, "CA_CacheAudioChunk(): Can't find audio files.");
\r
1331 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1332 // a larger buffer
\r
1334 pos = audiostarts[chunk];
\r
1335 compressed = audiostarts[chunk+1]-pos;
\r
1337 lseek(audiohandle,pos,SEEK_SET);
\r
1339 #ifndef AUDIOHEADERLINKED
\r
1341 MM_GetPtr (MEMPTRCONV audiosegs[chunk],compressed);
\r
1345 CA_FarRead(audiohandle,audiosegs[chunk],compressed);
\r
1349 if (compressed<=BUFFERSIZE)
\r
1351 CA_FarRead(audiohandle,bufferseg,compressed);
\r
1352 source = bufferseg;
\r
1356 MM_GetPtr(&bigbufferseg,compressed);
\r
1359 MM_SetLock (&bigbufferseg,true);
\r
1360 CA_FarRead(audiohandle,bigbufferseg,compressed);
\r
1361 source = bigbufferseg;
\r
1364 expanded = *(long far *)source;
\r
1365 source += 4; // skip over length
\r
1366 MM_GetPtr (MEMPTRCONV audiosegs[chunk],expanded);
\r
1369 CAL_HuffExpand (source,audiosegs[chunk],expanded,audiohuffman);
\r
1372 if (compressed>BUFFERSIZE)
\r
1373 MM_FreePtr(&bigbufferseg);
\r
1377 //===========================================================================
\r
1380 ======================
\r
1382 = CA_LoadAllSounds
\r
1384 = Purges all sounds, then loads all new ones (mode switch)
\r
1386 ======================
\r
1389 void CA_LoadAllSounds (void)
\r
1393 switch (oldsoundmode)
\r
1398 start = STARTPCSOUNDS;
\r
1401 start = STARTADLIBSOUNDS;
\r
1405 for (i=0;i<NUMSOUNDS;i++,start++)
\r
1406 if (audiosegs[start])
\r
1407 MM_SetPurge (MEMPTRCONV audiosegs[start],3); // make purgable
\r
1411 switch (SoundMode)
\r
1416 start = STARTPCSOUNDS;
\r
1419 start = STARTADLIBSOUNDS;
\r
1423 for (i=0;i<NUMSOUNDS;i++,start++)
\r
1424 CA_CacheAudioChunk (start);
\r
1426 oldsoundmode = SoundMode;
\r
1429 //===========================================================================
\r
1431 //????#if GRMODE == EGAGR
\r
1434 ======================
\r
1438 = Make a shifted (one byte wider) copy of a sprite into another area
\r
1440 ======================
\r
1443 unsigned static sheight,swidth;
\r
1444 boolean static dothemask;
\r
1446 void CAL_ShiftSprite (unsigned segment,unsigned source,unsigned dest,
\r
1447 unsigned width, unsigned height, unsigned pixshift, boolean domask, global_game_variables_t *gvar)
\r
1450 sheight = height; // because we are going to reassign bp
\r
1452 dothemask = domask;
\r
1456 mov ds,ax // source and dest are in same segment, and all local
\r
1463 mov bp,WORD PTR [shifttabletable+bp] // bp holds pointer to shift table
\r
1464 // mov bp,WORD PTR [gvar->video.shifttabletable+bp] // bp holds pointer to shift table
\r
1466 cmp [ss:dothemask],0
\r
1470 // table shift the mask
\r
1472 mov dx,[ss:sheight]
\r
1473 #ifdef __BORLANDC__
\r
1477 #ifdef __BORLANDC__
\r
1480 mov BYTE PTR [di],255 // 0xff first byte
\r
1481 mov cx,ss:[swidth]
\r
1482 #ifdef __BORLANDC__
\r
1486 #ifdef __BORLANDC__
\r
1489 mov al,[bx] // source
\r
1491 inc bx // next source byte
\r
1495 mov ax,[bp+si] // table shift into two bytes
\r
1497 and [di],al // and with first byte
\r
1499 mov [di],ah // replace next byte
\r
1503 inc di // the last shifted byte has 1s in it
\r
1506 #ifdef __BORLANDC__
\r
1510 #ifdef __BORLANDC__
\r
1514 // table shift the data
\r
1516 mov dx,ss:[sheight]
\r
1518 shl dx,1 // four planes of data
\r
1519 #ifdef __BORLANDC__
\r
1523 #ifdef __BORLANDC__
\r
1526 mov BYTE PTR [di],0 // 0 first byte
\r
1527 mov cx,ss:[swidth]
\r
1528 #ifdef __BORLANDC__
\r
1532 #ifdef __BORLANDC__
\r
1535 mov al,[bx] // source
\r
1536 inc bx // next source byte
\r
1540 mov ax,[bp+si] // table shift into two bytes
\r
1541 or [di],al // or with first byte
\r
1543 mov [di],ah // replace next byte
\r
1547 inc di // the last shifted byte has 0s in it
\r
1555 mov ax,ss // restore data segment
\r
1563 //===========================================================================
\r
1566 ======================
\r
1570 = Generate shifts and set up sprite structure for a given sprite
\r
1572 ======================
\r
1575 void CAL_CacheSprite (int chunk, byte far *compressed, global_game_variables_t *gvar)
\r
1578 unsigned shiftstarts[5];
\r
1579 unsigned smallplane,bigplane,expanded;
\r
1580 spritetabletype far *spr;
\r
1581 spritetype _seg *dest;
\r
1586 // CGA has no pel panning, so shifts are never needed
\r
1588 spr = &gvar->video.spritetable[chunk-STARTSPRITES];
\r
1589 smallplane = spr->width*spr->height;
\r
1590 MM_GetPtr (&grsegs[chunk],smallplane*2+MAXSHIFTS*6);
\r
1593 dest = (spritetype _seg *)grsegs[chunk];
\r
1594 dest->sourceoffset[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1595 dest->planesize[0] = smallplane;
\r
1596 dest->width[0] = spr->width;
\r
1599 // expand the unshifted shape
\r
1601 CAL_HuffExpand (compressed, &dest->data[0],smallplane*2,gvar->ca.grhuffman);
\r
1606 //#if GRMODE == EGAGR
\r
1609 // calculate sizes
\r
1611 spr = &gvar->video.spritetable[chunk-STARTSPRITES];
\r
1612 smallplane = spr->width*spr->height;
\r
1613 bigplane = (spr->width+1)*spr->height;
\r
1615 shiftstarts[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1616 shiftstarts[1] = shiftstarts[0] + smallplane*5; // 5 planes in a sprite
\r
1617 shiftstarts[2] = shiftstarts[1] + bigplane*5;
\r
1618 shiftstarts[3] = shiftstarts[2] + bigplane*5;
\r
1619 shiftstarts[4] = shiftstarts[3] + bigplane*5; // nothing ever put here
\r
1621 expanded = shiftstarts[spr->shifts];
\r
1622 MM_GetPtr (MEMPTRCONV gvar->ca.grsegs[chunk],expanded, gvar);
\r
1623 if (gvar->mm.mmerror)
\r
1625 dest = (spritetype _seg *)gvar->ca.grsegs[chunk];
\r
1628 // expand the unshifted shape
\r
1630 CAL_HuffExpand (compressed, &dest->data[0],smallplane*5,gvar->ca.grhuffman);
\r
1633 // make the shifts!
\r
1635 switch (spr->shifts)
\r
1640 dest->sourceoffset[i] = shiftstarts[0];
\r
1641 dest->planesize[i] = smallplane;
\r
1642 dest->width[i] = spr->width;
\r
1649 dest->sourceoffset[i] = shiftstarts[0];
\r
1650 dest->planesize[i] = smallplane;
\r
1651 dest->width[i] = spr->width;
\r
1655 dest->sourceoffset[i] = shiftstarts[1];
\r
1656 dest->planesize[i] = bigplane;
\r
1657 dest->width[i] = spr->width+1;
\r
1659 CAL_ShiftSprite ((unsigned)gvar->ca.grsegs[chunk],dest->sourceoffset[0],
\r
1660 dest->sourceoffset[2],spr->width,spr->height,4,true,gvar);
\r
1664 dest->sourceoffset[0] = shiftstarts[0];
\r
1665 dest->planesize[0] = smallplane;
\r
1666 dest->width[0] = spr->width;
\r
1668 dest->sourceoffset[1] = shiftstarts[1];
\r
1669 dest->planesize[1] = bigplane;
\r
1670 dest->width[1] = spr->width+1;
\r
1671 CAL_ShiftSprite ((unsigned)gvar->ca.grsegs[chunk],dest->sourceoffset[0],
\r
1672 dest->sourceoffset[1],spr->width,spr->height,2,true,gvar);
\r
1674 dest->sourceoffset[2] = shiftstarts[2];
\r
1675 dest->planesize[2] = bigplane;
\r
1676 dest->width[2] = spr->width+1;
\r
1677 CAL_ShiftSprite ((unsigned)gvar->ca.grsegs[chunk],dest->sourceoffset[0],
\r
1678 dest->sourceoffset[2],spr->width,spr->height,4,true,gvar);
\r
1680 dest->sourceoffset[3] = shiftstarts[3];
\r
1681 dest->planesize[3] = bigplane;
\r
1682 dest->width[3] = spr->width+1;
\r
1683 CAL_ShiftSprite ((unsigned)gvar->ca.grsegs[chunk],dest->sourceoffset[0],
\r
1684 dest->sourceoffset[3],spr->width,spr->height,6,true,gvar);
\r
1689 Quit (gvar, "CAL_CacheSprite: Bad shifts number!");
\r
1695 //===========================================================================
\r
1699 ======================
\r
1701 = CAL_ExpandGrChunk
\r
1703 = Does whatever is needed with a pointer to a compressed chunk
\r
1705 ======================
\r
1708 void CAL_ExpandGrChunk (int chunk, byte far *source)
\r
1713 if (chunk >= STARTTILE8 && chunk < STARTEXTERNS)
\r
1716 // expanded sizes of tile8/16/32 are implicit
\r
1719 #if GRMODE == EGAGR
\r
1721 #define MASKBLOCK 40
\r
1724 #if GRMODE == CGAGR
\r
1726 #define MASKBLOCK 32
\r
1729 if (chunk<STARTTILE8M) // tile 8s are all in one chunk!
\r
1730 expanded = BLOCK*NUMTILE8;
\r
1731 else if (chunk<STARTTILE16)
\r
1732 expanded = MASKBLOCK*NUMTILE8M;
\r
1733 else if (chunk<STARTTILE16M) // all other tiles are one/chunk
\r
1734 expanded = BLOCK*4;
\r
1735 else if (chunk<STARTTILE32)
\r
1736 expanded = MASKBLOCK*4;
\r
1737 else if (chunk<STARTTILE32M)
\r
1738 expanded = BLOCK*16;
\r
1740 expanded = MASKBLOCK*16;
\r
1745 // everything else has an explicit size longword
\r
1747 expanded = *(long far *)source;
\r
1748 source += 4; // skip over length
\r
1752 // allocate final space, decompress it, and free bigbuffer
\r
1753 // Sprites need to have shifts made and various other junk
\r
1755 if (chunk>=STARTSPRITES && chunk< STARTTILE8)
\r
1756 CAL_CacheSprite(chunk,source);
\r
1759 MM_GetPtr (&grsegs[chunk],expanded);
\r
1762 CAL_HuffExpand (source,grsegs[chunk],expanded,gvar->ca.grhuffman);
\r
1768 ======================
\r
1772 = Gets a chunk off disk, optimizing reads to general buffer
\r
1774 ======================
\r
1777 void CAL_ReadGrChunk (int chunk)
\r
1779 long pos,compressed;
\r
1780 memptr bigbufferseg;
\r
1785 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1786 // a larger buffer
\r
1788 pos = GRFILEPOS(chunk,gvar);
\r
1789 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1793 while (GRFILEPOS(next,gvar) == -1) // skip past any sparse tiles
\r
1796 compressed = GRFILEPOS(next,gvar)-pos;
\r
1798 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
1800 if (compressed<=BUFFERSIZE)
\r
1802 CA_FarRead(gvar->ca.file.grhandle,bufferseg,compressed);
\r
1803 source = bufferseg;
\r
1807 MM_GetPtr(&bigbufferseg,compressed);
\r
1810 MM_SetLock (&bigbufferseg,true);
\r
1811 CA_FarRead(gvar->ca.file.grhandle,bigbufferseg,compressed);
\r
1812 source = bigbufferseg;
\r
1815 CAL_ExpandGrChunk (chunk,source);
\r
1817 if (compressed>BUFFERSIZE)
\r
1818 MM_FreePtr(&bigbufferseg);
\r
1822 ======================
\r
1826 = Makes sure a given chunk is in memory, loadiing it if needed
\r
1828 ======================
\r
1831 void CA_CacheGrChunk (int chunk)
\r
1833 long pos,compressed;
\r
1834 memptr bigbufferseg;
\r
1838 gvar->ca.grneeded[chunk] |= ca_levelbit; // make sure it doesn't get removed
\r
1839 if (grsegs[chunk])
\r
1841 MM_SetPurge (&grsegs[chunk],0);
\r
1842 return; // allready in memory
\r
1845 // MDM begin - (GAMERS EDGE)
\r
1847 if (!FindFile("EGAGRAPH.16",NULL,2))
\r
1848 Quit (gvar, "CA_CacheGrChunk(): Can't find graphics files.");
\r
1853 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1854 // a larger buffer
\r
1856 pos = GRFILEPOS(chunk,gvar);
\r
1857 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1861 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1864 compressed = GRFILEPOS(next,gvar)-pos;
\r
1866 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
1868 if (compressed<=BUFFERSIZE)
\r
1870 CA_FarRead(gvar->ca.file.grhandle,bufferseg,compressed);
\r
1871 source = bufferseg;
\r
1875 MM_GetPtr(&bigbufferseg,compressed);
\r
1876 MM_SetLock (&bigbufferseg,true);
\r
1877 CA_FarRead(gvar->ca.file.grhandle,bigbufferseg,compressed);
\r
1878 source = bigbufferseg;
\r
1881 CAL_ExpandGrChunk (chunk,source);
\r
1883 if (compressed>BUFFERSIZE)
\r
1884 MM_FreePtr(&bigbufferseg);
\r
1889 //==========================================================================
\r
1892 ======================
\r
1896 ======================
\r
1899 void CA_CacheMap (global_game_variables_t *gvar)
\r
1901 long pos,compressed;
\r
1903 memptr *dest,bigbufferseg;
\r
1905 unsigned far *source;
\r
1906 #ifdef MAPHEADERLINKED
\r
1907 memptr buffer2seg;
\r
1913 // free up memory from last map
\r
1915 if (gvar->ca.mapon>-1 && gvar->ca.mapheaderseg[gvar->ca.mapon])
\r
1916 MM_SetPurge ((MEMPTRCONV gvar->ca.mapheaderseg[(gvar->ca.mapon)]), 3, gvar);
\r
1917 for (plane=0;plane<MAPPLANES;plane++)
\r
1918 if (gvar->ca.mapsegs[plane])
\r
1919 MM_FreePtr (MEMPTRCONV gvar->ca.mapsegs[plane], gvar);
\r
1921 gvar->ca.mapon = gvar->ca.mapnum;
\r
1925 // load map header
\r
1926 // The header will be cached if it is still around
\r
1928 if (!gvar->ca.mapheaderseg[gvar->ca.mapnum])
\r
1930 pos = ((mapfiletype _seg *)gvar->ca.tinf)->headeroffsets[gvar->ca.mapnum];
\r
1931 if (pos<0) // $FFFFFFFF start is a sparse map
\r
1932 Quit (gvar, "CA_CacheMap: Tried to load a non existent map!");
\r
1934 MM_GetPtr(MEMPTRCONV gvar->ca.mapheaderseg[gvar->ca.mapnum],sizeof(maptype), gvar);
\r
1935 lseek(gvar->ca.file.maphandle,pos,SEEK_SET);
\r
1936 #ifdef MAPHEADERLINKED
\r
1937 //#if BUFFERSIZE < sizeof(maptype)
\r
1938 //The general buffer size is too small!
\r
1941 // load in, then unhuffman to the destination
\r
1943 CA_FarRead (gvar->ca.file.maphandle,gvar->mm.bufferseg,((mapfiletype _seg *)gvar->ca.tinf)->headersize[gvar->ca.mapnum], gvar);
\r
1944 CAL_HuffExpand ((byte huge *)bufferseg,
\r
1945 (byte huge *)gvar->ca.mapheaderseg[gvar->ca.mapnum],sizeof(maptype),maphuffman, gvar);
\r
1947 CA_FarRead (gvar->ca.file.maphandle,(memptr)gvar->ca.mapheaderseg[gvar->ca.mapnum],sizeof(maptype), gvar);
\r
1951 MM_SetPurge (MEMPTRCONV gvar->ca.mapheaderseg[gvar->ca.mapnum], 0, gvar);
\r
1954 // load the planes in
\r
1955 // If a plane's pointer still exists it will be overwritten (levels are
\r
1956 // allways reloaded, never cached)
\r
1959 size = gvar->ca.mapheaderseg[gvar->ca.mapnum]->width * gvar->ca.mapheaderseg[gvar->ca.mapnum]->height * 2;
\r
1961 for (plane = 0; plane<MAPPLANES; plane++)
\r
1963 pos = gvar->ca.mapheaderseg[gvar->ca.mapnum]->planestart[plane];
\r
1964 compressed = gvar->ca.mapheaderseg[gvar->ca.mapnum]->planelength[plane];
\r
1967 continue; // the plane is not used in this game
\r
1969 dest = MEMPTRCONV gvar->ca.mapsegs[plane];
\r
1970 MM_GetPtr(dest,size, gvar);
\r
1972 lseek(gvar->ca.file.maphandle,pos,SEEK_SET);
\r
1973 if (compressed<=BUFFERSIZE)
\r
1974 source = gvar->mm.bufferseg;
\r
1977 MM_GetPtr(&bigbufferseg,compressed, gvar);
\r
1978 MM_SetLock (&bigbufferseg,true, gvar);
\r
1979 source = bigbufferseg;
\r
1982 CA_FarRead(gvar->ca.file.maphandle,(byte far *)source,compressed, gvar);
\r
1983 #ifdef MAPHEADERLINKED
\r
1985 // unhuffman, then unRLEW
\r
1986 // The huffman'd chunk has a two byte expanded length first
\r
1987 // The resulting RLEW chunk also does, even though it's not really
\r
1990 expanded = *source;
\r
1992 MM_GetPtr (&buffer2seg,expanded, gvar);
\r
1993 CAL_CarmackExpand (source, (unsigned far *)buffer2seg,expanded);
\r
1994 CA_RLEWexpand (((unsigned far *)buffer2seg)+1,*dest,size,
\r
1995 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
1996 MM_FreePtr (&buffer2seg);
\r
2000 // unRLEW, skipping expanded length
\r
2002 CA_RLEWexpand (source+1, *dest,size,
\r
2003 ((mapfiletype _seg *)gvar->ca.tinf)->RLEWtag);
\r
2006 if (compressed>BUFFERSIZE)
\r
2007 MM_FreePtr(&bigbufferseg, gvar);
\r
2011 //===========================================================================
\r
2014 ======================
\r
2018 = Goes up a bit level in the needed lists and clears it out.
\r
2019 = Everything is made purgable
\r
2021 ======================
\r
2024 void CA_UpLevel (global_game_variables_t *gvar)
\r
2026 if (gvar->ca.ca_levelnum==7)
\r
2027 printf("CA_UpLevel: Up past level 7!");
\r
2029 gvar->ca.ca_levelbit<<=1;
\r
2030 gvar->ca.ca_levelnum++;
\r
2033 //===========================================================================
\r
2036 ======================
\r
2040 = Goes down a bit level in the needed lists and recaches
\r
2041 = everything from the lower level
\r
2043 ======================
\r
2046 void CA_DownLevel (global_game_variables_t *gvar)
\r
2048 if (!gvar->ca.ca_levelnum)
\r
2049 printf("CA_DownLevel: Down past level 0!");
\r
2050 gvar->ca.ca_levelbit>>=1;
\r
2051 gvar->ca.ca_levelnum--;
\r
2052 ////++++++++++++++++++++++++++++++++++++++++++CA_CacheMarks(NULL);
\r
2055 //===========================================================================
\r
2058 ======================
\r
2062 = Clears out all the marks at the current level
\r
2064 ======================
\r
2067 void CA_ClearMarks (global_game_variables_t *gvar)
\r
2071 for (i=0;i<NUMCHUNKS;i++)
\r
2072 gvar->ca.grneeded[i]&=~gvar->ca.ca_levelbit;
\r
2075 //===========================================================================
\r
2078 ======================
\r
2080 = CA_ClearAllMarks
\r
2082 = Clears out all the marks on all the levels
\r
2084 ======================
\r
2087 void CA_ClearAllMarks (global_game_variables_t *gvar)
\r
2089 _fmemset (gvar->ca.grneeded,0,sizeof(gvar->ca.grneeded));
\r
2090 gvar->ca.ca_levelbit = 1;
\r
2091 gvar->ca.ca_levelnum = 0;
\r
2094 //===========================================================================
\r
2097 ======================
\r
2101 ======================
\r
2104 void CA_SetGrPurge (global_game_variables_t *gvar)
\r
2111 CA_ClearMarks (gvar);
\r
2113 for (i=0;i<NUMCHUNKS;i++)
\r
2114 if (gvar->ca.grsegs[i])
\r
2115 MM_SetPurge (gvar->ca.grsegs[i],3, gvar);
\r
2120 ======================
\r
2124 = Make everything possible purgable
\r
2126 ======================
\r
2129 void CA_SetAllPurge (global_game_variables_t *gvar)
\r
2133 CA_ClearMarks (gvar);
\r
2136 // free cursor sprite and background save
\r
2138 //____VW_FreeCursor ();
\r
2141 // free map headers and map planes
\r
2143 for (i=0;i<NUMMAPS;i++)
\r
2144 if (gvar->ca.mapheaderseg[i])
\r
2145 MM_SetPurge (MEMPTRCONV gvar->ca.mapheaderseg[i],3, gvar);
\r
2148 if (gvar->ca.mapsegs[i])
\r
2149 MM_FreePtr (MEMPTRCONV gvar->ca.mapsegs[i], gvar);
\r
2154 for (i=0;i<NUMSNDCHUNKS;i++)
\r
2155 if (gvar->ca.audiosegs[i])
\r
2156 MM_SetPurge (MEMPTRCONV gvar->ca.audiosegs[i],3, gvar);
\r
2161 CA_SetGrPurge (gvar);
\r
2165 //===========================================================================
\r
2169 ======================
\r
2173 ======================
\r
2176 #define NUMBARS (17l*8)
\r
2179 unsigned thx,thy,lastx;
\r
2180 long barx,barstep;
\r
2182 void CAL_DialogDraw (char *title,unsigned numcache)
\r
2184 unsigned homex,homey,x;
\r
2186 barstep = (NUMBARS<<16)/numcache;
\r
2189 // draw dialog window (masked tiles 12 - 20 are window borders)
\r
2191 US_CenterWindow (20,8);
\r
2195 US_CPrint ("Loading");
\r
2196 fontcolor = F_SECONDCOLOR;
\r
2197 US_CPrint (title);
\r
2198 fontcolor = F_BLACK;
\r
2201 // draw thermometer bar
\r
2205 VWB_DrawTile8(thx,thy,0); // CAT3D numbers
\r
2206 VWB_DrawTile8(thx,thy+8,3);
\r
2207 VWB_DrawTile8(thx,thy+16,6);
\r
2208 VWB_DrawTile8(thx+17*8,thy,2);
\r
2209 VWB_DrawTile8(thx+17*8,thy+8,5);
\r
2210 VWB_DrawTile8(thx+17*8,thy+16,8);
\r
2211 for (x=thx+8;x<thx+17*8;x+=8)
\r
2213 VWB_DrawTile8(x,thy,1);
\r
2214 VWB_DrawTile8(x,thy+8,4);
\r
2215 VWB_DrawTile8(x,thy+16,7);
\r
2218 thx += 4; // first line location
\r
2220 barx = (long)thx<<16;
\r
2223 VW_UpdateScreen();
\r
2228 ======================
\r
2230 = CAL_DialogUpdate
\r
2232 ======================
\r
2235 void CAL_DialogUpdate (void)
\r
2241 if (xh - lastx > BARSTEP)
\r
2243 for (x=lastx;x<=xh;x++)
\r
2244 #if GRMODE == EGAGR
\r
2245 VWB_Vlin (thy,thy+13,x,14);
\r
2247 #if GRMODE == CGAGR
\r
2248 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2251 VW_UpdateScreen();
\r
2256 ======================
\r
2258 = CAL_DialogFinish
\r
2260 ======================
\r
2263 void CAL_DialogFinish (void)
\r
2267 xh = thx + NUMBARS;
\r
2268 for (x=lastx;x<=xh;x++)
\r
2269 #if GRMODE == EGAGR
\r
2270 VWB_Vlin (thy,thy+13,x,14);
\r
2272 #if GRMODE == CGAGR
\r
2273 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2275 VW_UpdateScreen();
\r
2279 //===========================================================================
\r
2282 ======================
\r
2286 ======================
\r
2288 #define MAXEMPTYREAD 1024
\r
2290 void CAL_CacheMarks (char *title, global_game_variables_t *gvar)
\r
2293 int i,next,numcache;
\r
2294 long pos,endpos,nextpos,nextendpos,compressed;
\r
2295 long bufferstart,bufferend; // file position of general buffer
\r
2297 memptr bigbufferseg;
\r
2299 dialog = (title!=NULL);
\r
2303 // go through and make everything not needed purgable
\r
2305 for (i=0;i<NUMCHUNKS;i++)
\r
2306 if (gvar->ca.grneeded[i]&(gvar->ca.ca_levelbit))//if (grneeded[i]&ca_levelbit)
\r
2308 if (gvar->ca.grsegs[i]) // its allready in memory, make
\r
2309 MM_SetPurge(gvar->ca.grsegs[i],0,gvar); // sure it stays there!
\r
2315 if (gvar->ca.grsegs[i]) // not needed, so make it purgeable
\r
2316 MM_SetPurge(gvar->ca.grsegs[i],3,gvar);
\r
2319 if (!numcache) // nothing to cache!
\r
2322 // MDM begin - (GAMERS EDGE)
\r
2324 //???? if (!FindFile("EGAGRAPH.16",NULL,2))
\r
2325 //???? Quit (gvar, "CA_CacheMarks(): Can't find graphics files.");
\r
2332 write(profilehandle,title,strlen(title));
\r
2333 write(profilehandle,"\n",1);
\r
2336 drawcachebox(title,numcache);
\r
2340 // go through and load in anything still needed
\r
2342 bufferstart = bufferend = 0; // nothing good in buffer now
\r
2344 for (i=0;i<NUMCHUNKS;i++)
\r
2345 if ( (gvar->ca.grneeded[i]&(gvar->ca.ca_levelbit)) && !gvar->ca.grsegs[i])
\r
2348 // update thermometer
\r
2350 if (dialog && updatecachebox)
\r
2351 updatecachebox ();
\r
2353 pos = GRFILEPOS(i,gvar);
\r
2358 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
2361 compressed = GRFILEPOS(next,gvar)-pos;
\r
2362 endpos = pos+compressed;
\r
2364 if (compressed<=BUFFERSIZE)
\r
2366 if (bufferstart<=pos
\r
2367 && bufferend>= endpos)
\r
2369 // data is allready in buffer
\r
2370 source = (byte _seg *)bufferseg+(pos-bufferstart);
\r
2374 // load buffer with a new block from disk
\r
2375 // try to get as many of the needed blocks in as possible
\r
2376 while ( next < NUMCHUNKS )
\r
2378 while (next < NUMCHUNKS &&
\r
2379 !(gvar->video.grneeded[next]&ca_levelbit && !grsegs[next]))
\r
2381 if (next == NUMCHUNKS)
\r
2384 nextpos = GRFILEPOS(next,gvar);
\r
2385 while (GRFILEPOS(++next,gvar) == -1) // skip past any sparse tiles
\r
2387 nextendpos = GRFILEPOS(next,gvar);
\r
2388 if (nextpos - endpos <= MAXEMPTYREAD
\r
2389 && nextendpos-pos <= BUFFERSIZE)
\r
2390 endpos = nextendpos;
\r
2392 next = NUMCHUNKS; // read pos to posend
\r
2395 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
2396 CA_FarRead(gvar->ca.file.grhandle,(gvar->mm.bufferseg),endpos-pos,gvar);
\r
2397 bufferstart = pos;
\r
2398 bufferend = endpos;
\r
2399 source = bufferseg;
\r
2404 // big chunk, allocate temporary buffer
\r
2405 MM_GetPtr(&bigbufferseg,compressed,gvar);
\r
2408 MM_SetLock (&bigbufferseg,true);
\r
2409 lseek(gvar->ca.file.grhandle,pos,SEEK_SET);
\r
2410 CA_FarRead(gvar->ca.file.grhandle,bigbufferseg,compressed,gvar);
\r
2411 source = bigbufferseg;
\r
2414 CAL_ExpandGrChunk (i,source);
\r
2418 if (compressed>BUFFERSIZE)
\r
2419 MM_FreePtr(&bigbufferseg);
\r
2424 // finish up any thermometer remnants
\r
2426 if (dialog && finishcachebox)
\r
2430 void CA_CannotOpen(char *string, global_game_variables_t *gvar)
\r
2434 strcpy(str,"Can't open ");
\r
2435 strcat(str,string);
\r
2436 strcat(str,"!\n");
\r