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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34 //#include "ID_STRS.H"
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36 //#define THREEBYTEGRSTARTS
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39 =============================================================================
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43 =============================================================================
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48 unsigned bit0,bit1; // 0-255 is a character, > is a pointer to a node
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55 long headeroffsets[100];
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61 =============================================================================
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65 =============================================================================
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71 unsigned _seg *mapsegs[3];
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72 maptype _seg *mapheaderseg[NUMMAPS];
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73 byte _seg *audiosegs[NUMSNDCHUNKS];
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74 void _seg *grsegs[NUMCHUNKS];
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76 byte far grneeded[NUMCHUNKS];
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77 byte ca_levelbit,ca_levelnum;*/
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79 int profilehandle,debughandle;
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81 void (*drawcachebox) (char *title, unsigned numcache);
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82 void (*updatecachebox) (void);
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83 void (*finishcachebox) (void);
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86 =============================================================================
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90 =============================================================================
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93 /*extern long far CGAhead;
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94 extern long far EGAhead;
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95 extern byte CGAdict;
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96 extern byte EGAdict;
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97 extern byte far maphead;
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98 extern byte mapdict;
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99 extern byte far audiohead;
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100 extern byte audiodict;
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103 long _seg *grstarts; // array of offsets in egagraph, -1 for sparse
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104 long _seg *audiostarts; // array of offsets in audio / audiot
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106 #ifdef GRHEADERLINKED
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107 huffnode *grhuffman;
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109 huffnode grhuffman[255];
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112 #ifdef AUDIOHEADERLINKED
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113 huffnode *audiohuffman;
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115 huffnode audiohuffman[255];
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119 int grhandle; // handle to EGAGRAPH
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120 int maphandle; // handle to MAPTEMP / GAMEMAPS
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121 int audiohandle; // handle to AUDIOT / AUDIO
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123 long chunkcomplen,chunkexplen;
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125 SDMode oldsoundmode;
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129 void CAL_DialogDraw (char *title,unsigned numcache);
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130 void CAL_DialogUpdate (void);
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131 void CAL_DialogFinish (void);*/
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132 //void CAL_CarmackExpand (unsigned far *source, unsigned far *dest,unsigned length);
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135 /*++++#ifdef THREEBYTEGRSTARTS
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136 #define FILEPOSSIZE 3
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137 //#define GRFILEPOS(c) (*(long far *)(((byte far *)grstarts)+(c)*3)&0xffffff)
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138 long GRFILEPOS(int c)
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145 value = *(long far *)(((byte far *)grstarts)+offset);
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147 value &= 0x00ffffffl;
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149 if (value == 0xffffffl)
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155 #define FILEPOSSIZE 4
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156 #define GRFILEPOS(c) (grstarts[c])
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160 =============================================================================
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164 =============================================================================
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168 ============================
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170 = CA_OpenDebug / CA_CloseDebug
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172 = Opens a binary file with the handle "debughandle"
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174 ============================
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176 void CA_OpenDebug(void)
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178 unlink("debug.16");
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179 debughandle = open("debug.16", O_CREAT | O_WRONLY | O_TEXT);
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182 void CA_CloseDebug(void)
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184 close(debughandle);
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190 ============================
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192 = CAL_GetGrChunkLength
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194 = Gets the length of an explicit length chunk (not tiles)
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195 = The file pointer is positioned so the compressed data can be read in next.
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197 ============================
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200 void CAL_GetGrChunkLength (int chunk)
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202 lseek(grhandle,GRFILEPOS(chunk),SEEK_SET);
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203 read(grhandle,&chunkexplen,sizeof(chunkexplen));
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204 chunkcomplen = GRFILEPOS(chunk+1)-GRFILEPOS(chunk)-4;
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209 ==========================
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213 = Read from a file to a far pointer
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215 ==========================
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218 boolean CA_FarRead(int handle, byte huge *dest, dword length, mminfo_t *mm)
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223 //if(mm->EMSVer<0x40)
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224 if(length>0xfffflu)
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226 printf("File is a fat bakapee\n");
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227 segm=(length%0xfffflu)-1;
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230 // printf("CA_FarRead doesn't support 64K reads yet!\n");
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238 mov cx,[WORD PTR length]
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239 mov dx,[WORD PTR dest]
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240 mov ds,[WORD PTR dest+2]
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241 mov ah,0x3f // READ w/handle
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248 #ifdef __BORLANDC__
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252 #ifdef __BORLANDC__
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255 cmp ax,[WORD PTR length]
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257 // errno = EINVFMT; // user manager knows this is bad read
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260 #ifdef __BORLANDC__
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264 #ifdef __BORLANDC__
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268 #ifdef __BORLANDC__
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276 //}else return 0;//todo: EXPAND!!!
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281 ==========================
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285 = Write from a file to a far pointer
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287 ==========================
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290 boolean CA_FarWrite(int handle, byte huge *source, dword length, mminfo_t *mm)
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295 //if(mm->EMSVer<0x40)
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296 if(length>0xfffflu)
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298 printf("File is a fat bakapee\n");
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299 segm=(length%0xfffflu)-1;
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302 // printf("CA_FarRead doesn't support 64K reads yet!\n");
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310 mov cx,[WORD PTR length]
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311 mov dx,[WORD PTR source]
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312 mov ds,[WORD PTR source+2]
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313 mov ah,0x40 // WRITE w/handle
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320 #ifdef __BORLANDC__
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324 #ifdef __BORLANDC__
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327 cmp ax,[WORD PTR length]
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329 //errno = ENOMEM; // user manager knows this is bad write
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332 #ifdef __BORLANDC__
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336 #ifdef __BORLANDC__
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340 #ifdef __BORLANDC__
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353 ==========================
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357 = Reads a file into an allready allocated buffer
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359 ==========================
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362 boolean CA_ReadFile(char *filename, memptr *ptr, mminfo_t *mm)
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368 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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371 size = filelength(handle);
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372 if(!CA_FarRead(handle,*ptr,size, mm))
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384 ==========================
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388 = Allocate space for and load a file
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390 ==========================
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393 boolean CA_LoadFile(char *filename, memptr *ptr, mminfo_t *mm, mminfotype *mmi)
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399 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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402 size = filelength (handle);
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403 MM_GetPtr(ptr,size, mm, mmi);
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404 if(!CA_FarRead(handle,*ptr,size, mm))
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414 ============================================================================
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416 COMPRESSION routines, see JHUFF.C for more
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418 ============================================================================
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426 = CAL_OptimizeNodes
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428 = Goes through a huffman table and changes the 256-511 node numbers to the
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429 = actular address of the node. Must be called before CAL_HuffExpand
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434 void CAL_OptimizeNodes(huffnode *table)
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441 for (i=0;i<255;i++)
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443 if (node->bit0 >= 256)
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444 node->bit0 = (unsigned)(table+(node->bit0-256));
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445 if (node->bit1 >= 256)
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446 node->bit1 = (unsigned)(table+(node->bit1-256));
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454 ======================
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458 = Length is the length of the EXPANDED data
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460 ======================
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463 /*++++void CAL_HuffExpand (byte huge *source, byte huge *dest,
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464 long length,huffnode *hufftable)
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466 // unsigned bit,byte,node,code;
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467 unsigned sourceseg,sourceoff,destseg,destoff,endoff;
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469 // huffnode *nodeon;
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471 headptr = hufftable+254; // head node is allways node 254
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473 source++; // normalize
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478 sourceseg = FP_SEG(source);
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479 sourceoff = FP_OFF(source);
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480 destseg = FP_SEG(dest);
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481 destoff = FP_OFF(dest);
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482 endoff = destoff+length;
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487 // ss:bx node pointer
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490 if (length <0xfff0)
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493 //--------------------------
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494 // expand less than 64k of data
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495 //--------------------------
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507 mov ch,[si] // load first byte
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512 test ch,cl // bit set?
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514 mov dx,[ss:bx] // take bit0 path from node
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515 shl cl,1 // advance to next bit position
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520 asm mov dx,[ss:bx+2] // take bit1 path
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521 asm shl cl,1 // advance to next bit position
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522 asm jnc sourceupshort
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525 asm mov ch,[si] // load next byte
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527 asm mov cl,1 // back to first bit
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530 asm or dh,dh // if dx<256 its a byte, else move node
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531 asm jz storebyteshort
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532 asm mov bx,dx // next node = (huffnode *)code
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533 asm jmp expandshort
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537 asm inc di // write a decopmpressed byte out
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538 asm mov bx,[headptr] // back to the head node for next bit
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540 asm cmp di,ax // done?
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541 asm jne expandshort
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547 //--------------------------
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548 // expand more than 64k of data
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549 //--------------------------
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555 asm mov bx,[headptr]
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558 asm mov si,[sourceoff]
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559 asm mov di,[destoff]
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560 asm mov es,[destseg]
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561 asm mov ds,[sourceseg]
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563 asm lodsb // load first byte
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566 asm test al,cl // bit set?
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568 asm mov dx,[ss:bx] // take bit0 path from node
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571 asm mov dx,[ss:bx+2] // take bit1 path
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574 asm shl cl,1 // advance to next bit position
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577 asm cmp si,0x10 // normalize ds:si
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584 asm mov cl,1 // back to first bit
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587 asm or dh,dh // if dx<256 its a byte, else move node
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589 asm mov bx,dx // next node = (huffnode *)code
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594 asm inc di // write a decopmpressed byte out
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595 asm mov bx,[headptr] // back to the head node for next bit
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597 asm cmp di,0x10 // normalize es:di
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605 asm sub [WORD PTR ss:length],1
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607 asm dec [WORD PTR ss:length+2]
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608 asm jns expand // when length = ffff ffff, done
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622 ======================
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624 = CAL_CarmackExpand
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626 = Length is the length of the EXPANDED data
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628 ======================
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631 #define NEARTAG 0xa7
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632 #define FARTAG 0xa8
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634 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest, unsigned length)
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636 unsigned ch,chhigh,count,offset;
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637 unsigned far *copyptr, far *inptr, far *outptr;
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648 if (chhigh == NEARTAG)
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652 { // have to insert a word containing the tag byte
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653 ch |= *((unsigned char far *)inptr)++;
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659 offset = *((unsigned char far *)inptr)++;
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660 copyptr = outptr - offset;
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663 *outptr++ = *copyptr++;
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666 else if (chhigh == FARTAG)
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670 { // have to insert a word containing the tag byte
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671 ch |= *((unsigned char far *)inptr)++;
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678 copyptr = dest + offset;
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681 *outptr++ = *copyptr++;
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695 ======================
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699 ======================
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702 long CA_RLEWCompress (unsigned huge *source, long length, unsigned huge *dest,
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706 unsigned value,count,i;
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707 unsigned huge *start,huge *end;
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711 end = source + (length+1)/2;
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720 while (*source == value && source<end)
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725 if (count>3 || value == rlewtag)
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728 // send a tag / count / value string
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737 // send word without compressing
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739 for (i=1;i<=count;i++)
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743 } while (source<end);
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745 complength = 2*(dest-start);
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751 ======================
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754 = length is EXPANDED length
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756 ======================
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759 void CA_RLEWexpand (unsigned huge *source, unsigned huge *dest,long length,
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762 // unsigned value,count,i;
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763 unsigned huge *end;
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764 unsigned sourceseg,sourceoff,destseg,destoff,endseg,endoff;
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774 if (value != rlewtag)
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782 // compressed string
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786 for (i=1;i<=count;i++)
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789 } while (dest<end);
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792 end = dest + (length)/2;
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793 sourceseg = FP_SEG(source);
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794 sourceoff = FP_OFF(source);
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795 destseg = FP_SEG(dest);
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796 destoff = FP_OFF(dest);
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797 endseg = FP_SEG(end);
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798 endoff = FP_OFF(end);
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802 // ax = source value
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804 // cx = repeat counts
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807 // NOTE: A repeat count that produces 0xfff0 bytes can blow this!
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811 asm mov si,sourceoff
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814 asm mov ds,sourceseg
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825 asm mov cx,ax // repeat count
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826 asm lodsw // repeat value
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831 asm cmp si,0x10 // normalize ds:si
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843 asm cmp di,0x10 // normalize es:di
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856 asm cmp di,ss:endoff
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859 asm cmp ax,ss:endseg
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870 =============================================================================
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872 CACHE MANAGER ROUTINES
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874 =============================================================================
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878 ======================
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882 ======================
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885 /*void CAL_SetupGrFile (void)
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890 #ifdef GRHEADERLINKED
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892 #if GRMODE == EGAGR
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893 grhuffman = (huffnode *)&EGAdict;
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894 grstarts = (long _seg *)FP_SEG(&EGAhead);
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896 #if GRMODE == CGAGR
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897 grhuffman = (huffnode *)&CGAdict;
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898 grstarts = (long _seg *)FP_SEG(&CGAhead);
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901 CAL_OptimizeNodes (grhuffman);
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906 // load ???dict.ext (huffman dictionary for graphics files)
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909 if ((handle = open(GREXT"DICT."EXT,
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910 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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911 Quit ("Can't open "GREXT"DICT."EXT"!");
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913 read(handle, &grhuffman, sizeof(grhuffman));
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915 CAL_OptimizeNodes (grhuffman);
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917 // load the data offsets from ???head.ext
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919 MM_GetPtr (&(memptr)grstarts,(NUMCHUNKS+1)*FILEPOSSIZE);
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921 if ((handle = open(GREXT"HEAD."EXT,
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922 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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923 Quit ("Can't open "GREXT"HEAD."EXT"!");
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925 CA_FarRead(handle, (memptr)grstarts, (NUMCHUNKS+1)*FILEPOSSIZE);
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933 // Open the graphics file, leaving it open until the game is finished
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935 grhandle = open(GREXT"GRAPH."EXT, O_RDONLY | O_BINARY);
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936 if (grhandle == -1)
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937 Quit ("Cannot open "GREXT"GRAPH."EXT"!");
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941 // load the pic and sprite headers into the arrays in the data segment
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944 MM_GetPtr(&(memptr)pictable,NUMPICS*sizeof(pictabletype));
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945 CAL_GetGrChunkLength(STRUCTPIC); // position file pointer
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946 MM_GetPtr(&compseg,chunkcomplen);
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947 CA_FarRead (grhandle,compseg,chunkcomplen);
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948 CAL_HuffExpand (compseg, (byte huge *)pictable,NUMPICS*sizeof(pictabletype),grhuffman);
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949 MM_FreePtr(&compseg);
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953 MM_GetPtr(&(memptr)picmtable,NUMPICM*sizeof(pictabletype));
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954 CAL_GetGrChunkLength(STRUCTPICM); // position file pointer
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955 MM_GetPtr(&compseg,chunkcomplen);
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956 CA_FarRead (grhandle,compseg,chunkcomplen);
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957 CAL_HuffExpand (compseg, (byte huge *)picmtable,NUMPICS*sizeof(pictabletype),grhuffman);
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958 MM_FreePtr(&compseg);
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962 MM_GetPtr(&(memptr)spritetable,NUMSPRITES*sizeof(spritetabletype));
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963 CAL_GetGrChunkLength(STRUCTSPRITE); // position file pointer
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964 MM_GetPtr(&compseg,chunkcomplen);
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965 CA_FarRead (grhandle,compseg,chunkcomplen);
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966 CAL_HuffExpand (compseg, (byte huge *)spritetable,NUMSPRITES*sizeof(spritetabletype),grhuffman);
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967 MM_FreePtr(&compseg);
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972 //==========================================================================
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976 ======================
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980 ======================
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983 /*void CAL_SetupMapFile (void)
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989 // load maphead.ext (offsets and tileinfo for map file)
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991 #ifndef MAPHEADERLINKED
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992 if ((handle = open("MAPHEAD."EXT,
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993 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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994 Quit ("Can't open MAPHEAD."EXT"!");
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995 length = filelength(handle);
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996 MM_GetPtr (&(memptr)tinf,length);
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997 CA_FarRead(handle, tinf, length);
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1001 tinf = (byte _seg *)FP_SEG(&maphead);
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1006 // open the data file
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1008 #ifdef MAPHEADERLINKED
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1009 if ((maphandle = open("GAMEMAPS."EXT,
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1010 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1011 Quit ("Can't open GAMEMAPS."EXT"!");
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1013 if ((maphandle = open("MAPTEMP."EXT,
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1014 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1015 Quit ("Can't open MAPTEMP."EXT"!");
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1019 //==========================================================================
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1023 ======================
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1025 = CAL_SetupAudioFile
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1027 ======================
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1030 /*void CAL_SetupAudioFile (void)
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1036 // load maphead.ext (offsets and tileinfo for map file)
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1038 #ifndef AUDIOHEADERLINKED
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1039 if ((handle = open("AUDIOHED."EXT,
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1040 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1041 Quit ("Can't open AUDIOHED."EXT"!");
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1042 length = filelength(handle);
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1043 MM_GetPtr (&(memptr)audiostarts,length);
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1044 CA_FarRead(handle, (byte far *)audiostarts, length);
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1047 audiohuffman = (huffnode *)&audiodict;
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1048 CAL_OptimizeNodes (audiohuffman);
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1049 audiostarts = (long _seg *)FP_SEG(&audiohead);
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1053 // open the data file
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1055 #ifndef AUDIOHEADERLINKED
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1056 if ((audiohandle = open("AUDIOT."EXT,
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1057 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1058 Quit ("Can't open AUDIOT."EXT"!");
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1060 if ((audiohandle = open("AUDIO."EXT,
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1061 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1062 Quit ("Can't open AUDIO."EXT"!");
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1066 //==========================================================================
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1070 ======================
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1074 = Open all files and load in headers
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1076 ======================
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1079 void CA_Startup(void)
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1082 unlink("profile.16");
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1083 profilehandle = open("profile.16", O_CREAT | O_WRONLY | O_TEXT);
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1086 // MDM begin - (GAMERS EDGE)
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1088 if(!FindFile("AUDIO."EXT,NULL,2))
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1089 Quit("CA_Startup(): Can't find audio files.");
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1094 CAL_SetupAudioFile();
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1097 // MDM begin - (GAMERS EDGE)
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1099 if (!FindFile("GAMEMAPS."EXT,NULL,1))
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1100 Quit("CA_Startup(): Can't find level files.");
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1105 CAL_SetupMapFile ();
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1108 // MDM begin - (GAMERS EDGE)
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1110 if (!FindFile("EGAGRAPH."EXT,NULL,2))
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1111 Quit("CA_Startup(): Can't find graphics files.");
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1115 #ifndef NOGRAPHICS
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1116 CAL_SetupGrFile ();
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1123 drawcachebox = CAL_DialogDraw;
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1124 updatecachebox = CAL_DialogUpdate;
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1125 finishcachebox = CAL_DialogFinish;*/
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1128 //==========================================================================
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1132 ======================
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1136 = Closes all files
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1138 ======================
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1141 void CA_Shutdown(void)
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1144 close(profilehandle);
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1149 close(audiohandle);*/
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1152 //===========================================================================
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1155 ======================
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1157 = CA_CacheAudioChunk
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1159 ======================
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1162 void CA_CacheAudioChunk (int chunk)
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1164 long pos,compressed;
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1165 #ifdef AUDIOHEADERLINKED
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1167 memptr bigbufferseg;
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1171 if (audiosegs[chunk])
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1173 MM_SetPurge (&(memptr)audiosegs[chunk],0);
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1174 return; // allready in memory
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1177 // MDM begin - (GAMERS EDGE)
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1179 if (!FindFile("AUDIO."EXT,NULL,2))
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1180 Quit("CA_CacheAudioChunk(): Can't find audio files.");
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1185 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
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1186 // a larger buffer
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1188 pos = audiostarts[chunk];
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1189 compressed = audiostarts[chunk+1]-pos;
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1191 lseek(audiohandle,pos,SEEK_SET);
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1193 #ifndef AUDIOHEADERLINKED
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1195 MM_GetPtr (&(memptr)audiosegs[chunk],compressed);
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1199 CA_FarRead(audiohandle,audiosegs[chunk],compressed);
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1203 if (compressed<=BUFFERSIZE)
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1205 CA_FarRead(audiohandle,bufferseg,compressed);
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1206 source = bufferseg;
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1210 MM_GetPtr(&bigbufferseg,compressed);
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1213 MM_SetLock (&bigbufferseg,true);
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1214 CA_FarRead(audiohandle,bigbufferseg,compressed);
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1215 source = bigbufferseg;
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1218 expanded = *(long far *)source;
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1219 source += 4; // skip over length
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1220 MM_GetPtr (&(memptr)audiosegs[chunk],expanded);
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1223 CAL_HuffExpand (source,audiosegs[chunk],expanded,audiohuffman);
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1226 if (compressed>BUFFERSIZE)
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1227 MM_FreePtr(&bigbufferseg);
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1231 //===========================================================================
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1234 ======================
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1236 = CA_LoadAllSounds
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1238 = Purges all sounds, then loads all new ones (mode switch)
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1240 ======================
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1243 void CA_LoadAllSounds (void)
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1247 switch (oldsoundmode)
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1252 start = STARTPCSOUNDS;
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1255 start = STARTADLIBSOUNDS;
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1259 for (i=0;i<NUMSOUNDS;i++,start++)
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1260 if (audiosegs[start])
\r
1261 MM_SetPurge (&(memptr)audiosegs[start],3); // make purgable
\r
1265 switch (SoundMode)
\r
1270 start = STARTPCSOUNDS;
\r
1273 start = STARTADLIBSOUNDS;
\r
1277 for (i=0;i<NUMSOUNDS;i++,start++)
\r
1278 CA_CacheAudioChunk (start);
\r
1280 oldsoundmode = SoundMode;
\r
1283 //===========================================================================
\r
1285 //++++#if GRMODE == EGAGR
\r
1288 ======================
\r
1292 = Make a shifted (one byte wider) copy of a sprite into another area
\r
1294 ======================
\r
1297 unsigned static sheight,swidth;
\r
1298 boolean static dothemask;
\r
1300 void CAL_ShiftSprite (unsigned segment,unsigned source,unsigned dest,
\r
1301 unsigned width, unsigned height, unsigned pixshift, boolean domask)
\r
1304 sheight = height; // because we are going to reassign bp
\r
1306 dothemask = domask;
\r
1308 asm mov ax,[segment]
\r
1309 asm mov ds,ax // source and dest are in same segment, and all local
\r
1311 asm mov bx,[source]
\r
1314 asm mov bp,[pixshift]
\r
1316 asm mov bp,WORD PTR [shifttabletable+bp] // bp holds pointer to shift table
\r
1318 asm cmp [ss:dothemask],0
\r
1322 // table shift the mask
\r
1324 asm mov dx,[ss:sheight]
\r
1328 asm mov BYTE PTR [di],255 // 0xff first byte
\r
1329 asm mov cx,ss:[swidth]
\r
1333 asm mov al,[bx] // source
\r
1335 asm inc bx // next source byte
\r
1339 asm mov ax,[bp+si] // table shift into two bytes
\r
1341 asm and [di],al // and with first byte
\r
1343 asm mov [di],ah // replace next byte
\r
1345 asm loop domaskbyte
\r
1347 asm inc di // the last shifted byte has 1s in it
\r
1354 // table shift the data
\r
1356 asm mov dx,ss:[sheight]
\r
1358 asm shl dx,1 // four planes of data
\r
1362 asm mov BYTE PTR [di],0 // 0 first byte
\r
1363 asm mov cx,ss:[swidth]
\r
1367 asm mov al,[bx] // source
\r
1368 asm inc bx // next source byte
\r
1372 asm mov ax,[bp+si] // table shift into two bytes
\r
1373 asm or [di],al // or with first byte
\r
1375 asm mov [di],ah // replace next byte
\r
1377 asm loop dodatabyte
\r
1379 asm inc di // the last shifted byte has 0s in it
\r
1387 asm mov ax,ss // restore data segment
\r
1394 //===========================================================================
\r
1397 ======================
\r
1401 = Generate shifts and set up sprite structure for a given sprite
\r
1403 ======================
\r
1406 void CAL_CacheSprite (int chunk, byte far *compressed)
\r
1409 unsigned shiftstarts[5];
\r
1410 unsigned smallplane,bigplane,expanded;
\r
1411 spritetabletype far *spr;
\r
1412 spritetype _seg *dest;
\r
1414 #if GRMODE == CGAGR
\r
1416 // CGA has no pel panning, so shifts are never needed
\r
1418 spr = &spritetable[chunk-STARTSPRITES];
\r
1419 smallplane = spr->width*spr->height;
\r
1420 MM_GetPtr (&grsegs[chunk],smallplane*2+MAXSHIFTS*6);
\r
1423 dest = (spritetype _seg *)grsegs[chunk];
\r
1424 dest->sourceoffset[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1425 dest->planesize[0] = smallplane;
\r
1426 dest->width[0] = spr->width;
\r
1429 // expand the unshifted shape
\r
1431 CAL_HuffExpand (compressed, &dest->data[0],smallplane*2,grhuffman);
\r
1436 #if GRMODE == EGAGR
\r
1439 // calculate sizes
\r
1441 spr = &spritetable[chunk-STARTSPRITES];
\r
1442 smallplane = spr->width*spr->height;
\r
1443 bigplane = (spr->width+1)*spr->height;
\r
1445 shiftstarts[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1446 shiftstarts[1] = shiftstarts[0] + smallplane*5; // 5 planes in a sprite
\r
1447 shiftstarts[2] = shiftstarts[1] + bigplane*5;
\r
1448 shiftstarts[3] = shiftstarts[2] + bigplane*5;
\r
1449 shiftstarts[4] = shiftstarts[3] + bigplane*5; // nothing ever put here
\r
1451 expanded = shiftstarts[spr->shifts];
\r
1452 MM_GetPtr (&grsegs[chunk],expanded);
\r
1455 dest = (spritetype _seg *)grsegs[chunk];
\r
1458 // expand the unshifted shape
\r
1460 CAL_HuffExpand (compressed, &dest->data[0],smallplane*5,grhuffman);
\r
1463 // make the shifts!
\r
1465 switch (spr->shifts)
\r
1470 dest->sourceoffset[i] = shiftstarts[0];
\r
1471 dest->planesize[i] = smallplane;
\r
1472 dest->width[i] = spr->width;
\r
1479 dest->sourceoffset[i] = shiftstarts[0];
\r
1480 dest->planesize[i] = smallplane;
\r
1481 dest->width[i] = spr->width;
\r
1485 dest->sourceoffset[i] = shiftstarts[1];
\r
1486 dest->planesize[i] = bigplane;
\r
1487 dest->width[i] = spr->width+1;
\r
1489 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1490 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1494 dest->sourceoffset[0] = shiftstarts[0];
\r
1495 dest->planesize[0] = smallplane;
\r
1496 dest->width[0] = spr->width;
\r
1498 dest->sourceoffset[1] = shiftstarts[1];
\r
1499 dest->planesize[1] = bigplane;
\r
1500 dest->width[1] = spr->width+1;
\r
1501 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1502 dest->sourceoffset[1],spr->width,spr->height,2,true);
\r
1504 dest->sourceoffset[2] = shiftstarts[2];
\r
1505 dest->planesize[2] = bigplane;
\r
1506 dest->width[2] = spr->width+1;
\r
1507 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1508 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1510 dest->sourceoffset[3] = shiftstarts[3];
\r
1511 dest->planesize[3] = bigplane;
\r
1512 dest->width[3] = spr->width+1;
\r
1513 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1514 dest->sourceoffset[3],spr->width,spr->height,6,true);
\r
1519 Quit ("CAL_CacheSprite: Bad shifts number!");
\r
1525 //===========================================================================
\r
1529 ======================
\r
1531 = CAL_ExpandGrChunk
\r
1533 = Does whatever is needed with a pointer to a compressed chunk
\r
1535 ======================
\r
1538 void CAL_ExpandGrChunk (int chunk, byte far *source)
\r
1543 if (chunk >= STARTTILE8 && chunk < STARTEXTERNS)
\r
1546 // expanded sizes of tile8/16/32 are implicit
\r
1549 #if GRMODE == EGAGR
\r
1551 #define MASKBLOCK 40
\r
1554 #if GRMODE == CGAGR
\r
1556 #define MASKBLOCK 32
\r
1559 if (chunk<STARTTILE8M) // tile 8s are all in one chunk!
\r
1560 expanded = BLOCK*NUMTILE8;
\r
1561 else if (chunk<STARTTILE16)
\r
1562 expanded = MASKBLOCK*NUMTILE8M;
\r
1563 else if (chunk<STARTTILE16M) // all other tiles are one/chunk
\r
1564 expanded = BLOCK*4;
\r
1565 else if (chunk<STARTTILE32)
\r
1566 expanded = MASKBLOCK*4;
\r
1567 else if (chunk<STARTTILE32M)
\r
1568 expanded = BLOCK*16;
\r
1570 expanded = MASKBLOCK*16;
\r
1575 // everything else has an explicit size longword
\r
1577 expanded = *(long far *)source;
\r
1578 source += 4; // skip over length
\r
1582 // allocate final space, decompress it, and free bigbuffer
\r
1583 // Sprites need to have shifts made and various other junk
\r
1585 if (chunk>=STARTSPRITES && chunk< STARTTILE8)
\r
1586 CAL_CacheSprite(chunk,source);
\r
1589 MM_GetPtr (&grsegs[chunk],expanded);
\r
1592 CAL_HuffExpand (source,grsegs[chunk],expanded,grhuffman);
\r
1598 ======================
\r
1602 = Gets a chunk off disk, optimizing reads to general buffer
\r
1604 ======================
\r
1607 void CAL_ReadGrChunk (int chunk)
\r
1609 long pos,compressed;
\r
1610 memptr bigbufferseg;
\r
1615 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1616 // a larger buffer
\r
1618 pos = GRFILEPOS(chunk);
\r
1619 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1623 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1626 compressed = GRFILEPOS(next)-pos;
\r
1628 lseek(grhandle,pos,SEEK_SET);
\r
1630 if (compressed<=BUFFERSIZE)
\r
1632 CA_FarRead(grhandle,bufferseg,compressed);
\r
1633 source = bufferseg;
\r
1637 MM_GetPtr(&bigbufferseg,compressed);
\r
1640 MM_SetLock (&bigbufferseg,true);
\r
1641 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
1642 source = bigbufferseg;
\r
1645 CAL_ExpandGrChunk (chunk,source);
\r
1647 if (compressed>BUFFERSIZE)
\r
1648 MM_FreePtr(&bigbufferseg);
\r
1652 ======================
\r
1656 = Makes sure a given chunk is in memory, loadiing it if needed
\r
1658 ======================
\r
1661 void CA_CacheGrChunk (int chunk)
\r
1663 long pos,compressed;
\r
1664 memptr bigbufferseg;
\r
1668 grneeded[chunk] |= ca_levelbit; // make sure it doesn't get removed
\r
1669 if (grsegs[chunk])
\r
1671 MM_SetPurge (&grsegs[chunk],0);
\r
1672 return; // allready in memory
\r
1675 // MDM begin - (GAMERS EDGE)
\r
1677 if (!FindFile("EGAGRAPH."EXT,NULL,2))
\r
1678 Quit("CA_CacheGrChunk(): Can't find graphics files.");
\r
1683 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1684 // a larger buffer
\r
1686 pos = GRFILEPOS(chunk);
\r
1687 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1691 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1694 compressed = GRFILEPOS(next)-pos;
\r
1696 lseek(grhandle,pos,SEEK_SET);
\r
1698 if (compressed<=BUFFERSIZE)
\r
1700 CA_FarRead(grhandle,bufferseg,compressed);
\r
1701 source = bufferseg;
\r
1705 MM_GetPtr(&bigbufferseg,compressed);
\r
1706 MM_SetLock (&bigbufferseg,true);
\r
1707 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
1708 source = bigbufferseg;
\r
1711 CAL_ExpandGrChunk (chunk,source);
\r
1713 if (compressed>BUFFERSIZE)
\r
1714 MM_FreePtr(&bigbufferseg);
\r
1719 //==========================================================================
\r
1722 ======================
\r
1726 ======================
\r
1729 void CA_CacheMap (int mapnum)
\r
1731 long pos,compressed;
\r
1733 memptr *dest,bigbufferseg;
\r
1735 unsigned far *source;
\r
1736 #ifdef MAPHEADERLINKED
\r
1737 memptr buffer2seg;
\r
1742 // MDM begin - (GAMERS EDGE)
\r
1744 if (!FindFile("GAMEMAPS."EXT,NULL,1))
\r
1745 Quit("CA_CacheMap(): Can't find level files.");
\r
1751 // free up memory from last map
\r
1753 if (mapon>-1 && mapheaderseg[mapon])
\r
1754 MM_SetPurge (&(memptr)mapheaderseg[mapon],3);
\r
1755 for (plane=0;plane<MAPPLANES;plane++)
\r
1756 if (mapsegs[plane])
\r
1757 MM_FreePtr (&(memptr)mapsegs[plane]);
\r
1763 // load map header
\r
1764 // The header will be cached if it is still around
\r
1766 if (!mapheaderseg[mapnum])
\r
1768 pos = ((mapfiletype _seg *)tinf)->headeroffsets[mapnum];
\r
1769 if (pos<0) // $FFFFFFFF start is a sparse map
\r
1770 Quit ("CA_CacheMap: Tried to load a non existent map!");
\r
1772 MM_GetPtr(&(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1773 lseek(maphandle,pos,SEEK_SET);
\r
1774 CA_FarRead (maphandle,(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1777 MM_SetPurge (&(memptr)mapheaderseg[mapnum],0);
\r
1780 // load the planes in
\r
1781 // If a plane's pointer still exists it will be overwritten (levels are
\r
1782 // allways reloaded, never cached)
\r
1785 size = mapheaderseg[mapnum]->width * mapheaderseg[mapnum]->height * 2;
\r
1787 for (plane = 0; plane<MAPPLANES; plane++)
\r
1789 pos = mapheaderseg[mapnum]->planestart[plane];
\r
1790 compressed = mapheaderseg[mapnum]->planelength[plane];
\r
1793 continue; // the plane is not used in this game
\r
1795 dest = &(memptr)mapsegs[plane];
\r
1796 MM_GetPtr(dest,size);
\r
1798 lseek(maphandle,pos,SEEK_SET);
\r
1799 if (compressed<=BUFFERSIZE)
\r
1800 source = bufferseg;
\r
1803 MM_GetPtr(&bigbufferseg,compressed);
\r
1804 MM_SetLock (&bigbufferseg,true);
\r
1805 source = bigbufferseg;
\r
1808 CA_FarRead(maphandle,(byte far *)source,compressed);
\r
1809 #ifdef MAPHEADERLINKED
\r
1811 // unhuffman, then unRLEW
\r
1812 // The huffman'd chunk has a two byte expanded length first
\r
1813 // The resulting RLEW chunk also does, even though it's not really
\r
1816 expanded = *source;
\r
1818 MM_GetPtr (&buffer2seg,expanded);
\r
1819 CAL_CarmackExpand (source, (unsigned far *)buffer2seg,expanded);
\r
1820 CA_RLEWexpand (((unsigned far *)buffer2seg)+1,*dest,size,
\r
1821 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
1822 MM_FreePtr (&buffer2seg);
\r
1826 // unRLEW, skipping expanded length
\r
1828 CA_RLEWexpand (source+1, *dest,size,
\r
1829 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
1832 if (compressed>BUFFERSIZE)
\r
1833 MM_FreePtr(&bigbufferseg);
\r
1837 //===========================================================================
\r
1840 ======================
\r
1844 = Goes up a bit level in the needed lists and clears it out.
\r
1845 = Everything is made purgable
\r
1847 ======================
\r
1850 void CA_UpLevel (void)
\r
1852 if (ca_levelnum==7)
\r
1853 Quit ("CA_UpLevel: Up past level 7!");
\r
1859 //===========================================================================
\r
1862 ======================
\r
1866 = Goes down a bit level in the needed lists and recaches
\r
1867 = everything from the lower level
\r
1869 ======================
\r
1872 void CA_DownLevel (void)
\r
1875 Quit ("CA_DownLevel: Down past level 0!");
\r
1878 CA_CacheMarks(NULL);
\r
1881 //===========================================================================
\r
1884 ======================
\r
1888 = Clears out all the marks at the current level
\r
1890 ======================
\r
1893 void CA_ClearMarks (void)
\r
1897 for (i=0;i<NUMCHUNKS;i++)
\r
1898 grneeded[i]&=~ca_levelbit;
\r
1902 //===========================================================================
\r
1905 ======================
\r
1907 = CA_ClearAllMarks
\r
1909 = Clears out all the marks on all the levels
\r
1911 ======================
\r
1914 void CA_ClearAllMarks (void)
\r
1916 _fmemset (grneeded,0,sizeof(grneeded));
\r
1922 //===========================================================================
\r
1925 ======================
\r
1929 ======================
\r
1932 void CA_FreeGraphics (void)
\r
1936 for (i=0;i<NUMCHUNKS;i++)
\r
1938 MM_SetPurge (&(memptr)grsegs[i],3);
\r
1943 ======================
\r
1947 = Make everything possible purgable
\r
1949 ======================
\r
1952 void CA_SetAllPurge (void)
\r
1959 // free cursor sprite and background save
\r
1964 // free map headers and map planes
\r
1966 for (i=0;i<NUMMAPS;i++)
\r
1967 if (mapheaderseg[i])
\r
1968 MM_SetPurge (&(memptr)mapheaderseg[i],3);
\r
1972 MM_FreePtr (&(memptr)mapsegs[i]);
\r
1977 for (i=0;i<NUMSNDCHUNKS;i++)
\r
1979 MM_SetPurge (&(memptr)audiosegs[i],3);
\r
1984 CA_FreeGraphics ();
\r
1988 void CA_SetGrPurge (void)
\r
1995 for (i=0;i<NUMCHUNKS;i++)
\r
1997 MM_SetPurge (&(memptr)grsegs[i],3);
\r
2001 //===========================================================================
\r
2005 ======================
\r
2009 ======================
\r
2012 #define NUMBARS (17l*8)
\r
2015 unsigned thx,thy,lastx;
\r
2016 long barx,barstep;
\r
2018 void CAL_DialogDraw (char *title,unsigned numcache)
\r
2020 unsigned homex,homey,x;
\r
2022 barstep = (NUMBARS<<16)/numcache;
\r
2025 // draw dialog window (masked tiles 12 - 20 are window borders)
\r
2027 US_CenterWindow (20,8);
\r
2031 US_CPrint ("Loading");
\r
2032 fontcolor = F_SECONDCOLOR;
\r
2033 US_CPrint (title);
\r
2034 fontcolor = F_BLACK;
\r
2037 // draw thermometer bar
\r
2041 VWB_DrawTile8(thx,thy,0); // CAT3D numbers
\r
2042 VWB_DrawTile8(thx,thy+8,3);
\r
2043 VWB_DrawTile8(thx,thy+16,6);
\r
2044 VWB_DrawTile8(thx+17*8,thy,2);
\r
2045 VWB_DrawTile8(thx+17*8,thy+8,5);
\r
2046 VWB_DrawTile8(thx+17*8,thy+16,8);
\r
2047 for (x=thx+8;x<thx+17*8;x+=8)
\r
2049 VWB_DrawTile8(x,thy,1);
\r
2050 VWB_DrawTile8(x,thy+8,4);
\r
2051 VWB_DrawTile8(x,thy+16,7);
\r
2054 thx += 4; // first line location
\r
2056 barx = (long)thx<<16;
\r
2059 VW_UpdateScreen();
\r
2064 ======================
\r
2066 = CAL_DialogUpdate
\r
2068 ======================
\r
2071 void CAL_DialogUpdate (void)
\r
2077 if (xh - lastx > BARSTEP)
\r
2079 for (x=lastx;x<=xh;x++)
\r
2080 #if GRMODE == EGAGR
\r
2081 VWB_Vlin (thy,thy+13,x,14);
\r
2083 #if GRMODE == CGAGR
\r
2084 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2087 VW_UpdateScreen();
\r
2092 ======================
\r
2094 = CAL_DialogFinish
\r
2096 ======================
\r
2099 void CAL_DialogFinish (void)
\r
2103 xh = thx + NUMBARS;
\r
2104 for (x=lastx;x<=xh;x++)
\r
2105 #if GRMODE == EGAGR
\r
2106 VWB_Vlin (thy,thy+13,x,14);
\r
2108 #if GRMODE == CGAGR
\r
2109 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2111 VW_UpdateScreen();
\r
2115 //===========================================================================
\r
2118 ======================
\r
2122 ======================
\r
2124 #define MAXEMPTYREAD 1024
\r
2126 void CA_CacheMarks (char *title)
\r
2129 int i,next,numcache;
\r
2130 long pos,endpos,nextpos,nextendpos,compressed;
\r
2131 long bufferstart,bufferend; // file position of general buffer
\r
2133 memptr bigbufferseg;
\r
2135 dialog = (title!=NULL);
\r
2139 // go through and make everything not needed purgable
\r
2141 for (i=0;i<NUMCHUNKS;i++)
\r
2142 if (grneeded[i]&ca_levelbit)
\r
2144 if (grsegs[i]) // its allready in memory, make
\r
2145 MM_SetPurge(&grsegs[i],0); // sure it stays there!
\r
2151 if (grsegs[i]) // not needed, so make it purgeable
\r
2152 MM_SetPurge(&grsegs[i],3);
\r
2155 if (!numcache) // nothing to cache!
\r
2158 // MDM begin - (GAMERS EDGE)
\r
2160 if (!FindFile("EGAGRAPH."EXT,NULL,2))
\r
2161 Quit("CA_CacheMarks(): Can't find graphics files.");
\r
2168 write(profilehandle,title,strlen(title));
\r
2169 write(profilehandle,"\n",1);
\r
2172 drawcachebox(title,numcache);
\r
2176 // go through and load in anything still needed
\r
2178 bufferstart = bufferend = 0; // nothing good in buffer now
\r
2180 for (i=0;i<NUMCHUNKS;i++)
\r
2181 if ( (grneeded[i]&ca_levelbit) && !grsegs[i])
\r
2184 // update thermometer
\r
2186 if (dialog && updatecachebox)
\r
2187 updatecachebox ();
\r
2189 pos = GRFILEPOS(i);
\r
2194 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
2197 compressed = GRFILEPOS(next)-pos;
\r
2198 endpos = pos+compressed;
\r
2200 if (compressed<=BUFFERSIZE)
\r
2202 if (bufferstart<=pos
\r
2203 && bufferend>= endpos)
\r
2205 // data is allready in buffer
\r
2206 source = (byte _seg *)bufferseg+(pos-bufferstart);
\r
2210 // load buffer with a new block from disk
\r
2211 // try to get as many of the needed blocks in as possible
\r
2212 while ( next < NUMCHUNKS )
\r
2214 while (next < NUMCHUNKS &&
\r
2215 !(grneeded[next]&ca_levelbit && !grsegs[next]))
\r
2217 if (next == NUMCHUNKS)
\r
2220 nextpos = GRFILEPOS(next);
\r
2221 while (GRFILEPOS(++next) == -1) // skip past any sparse tiles
\r
2223 nextendpos = GRFILEPOS(next);
\r
2224 if (nextpos - endpos <= MAXEMPTYREAD
\r
2225 && nextendpos-pos <= BUFFERSIZE)
\r
2226 endpos = nextendpos;
\r
2228 next = NUMCHUNKS; // read pos to posend
\r
2231 lseek(grhandle,pos,SEEK_SET);
\r
2232 CA_FarRead(grhandle,bufferseg,endpos-pos);
\r
2233 bufferstart = pos;
\r
2234 bufferend = endpos;
\r
2235 source = bufferseg;
\r
2240 // big chunk, allocate temporary buffer
\r
2241 MM_GetPtr(&bigbufferseg,compressed);
\r
2244 MM_SetLock (&bigbufferseg,true);
\r
2245 lseek(grhandle,pos,SEEK_SET);
\r
2246 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
2247 source = bigbufferseg;
\r
2250 CAL_ExpandGrChunk (i,source);
\r
2254 if (compressed>BUFFERSIZE)
\r
2255 MM_FreePtr(&bigbufferseg);
\r
2260 // finish up any thermometer remnants
\r
2262 if (dialog && finishcachebox)
\r