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.txt");
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179 debughandle = open("debug.txt", 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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226 printf("File is a fat bakapee\n");
227 segm=(length%0xfffflu)-1;
230 // printf("CA_FarRead doesn't support 64K reads yet!\n");
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239 mov cx,[WORD PTR length]
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240 mov dx,[WORD PTR dest]
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241 mov ds,[WORD PTR dest+2]
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242 mov ah,0x3f // READ w/handle
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250 cmp ax,[WORD PTR length]
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252 // errno = EINVFMT; // user manager knows this is bad read
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260 }else return 0;//todo: EXPAND!!!
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265 ==========================
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269 = Write from a file to a far pointer
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271 ==========================
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274 boolean CA_FarWrite(int handle, byte huge *source, dword length, mminfo_t *mm)
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279 //if(mm->EMSVer<0x40)
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282 printf("File is a fat bakapee\n");
283 segm=(length%0xfffflu)-1;
286 // printf("CA_FarRead doesn't support 64K reads yet!\n");
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295 mov cx,[WORD PTR length]
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296 mov dx,[WORD PTR source]
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297 mov ds,[WORD PTR source+2]
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298 mov ah,0x40 // WRITE w/handle
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306 cmp ax,[WORD PTR length]
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308 //errno = ENOMEM; // user manager knows this is bad write
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321 ==========================
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325 = Reads a file into an allready allocated buffer
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327 ==========================
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330 boolean CA_ReadFile(char *filename, memptr *ptr, mminfo_t *mm)
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335 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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338 size = filelength(handle);
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339 if(!CA_FarRead(handle,*ptr,size, mm))
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351 ==========================
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355 = Allocate space for and load a file
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357 ==========================
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360 boolean CA_LoadFile(char *filename, memptr *ptr, mminfo_t *mm, mminfotype *mmi)
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365 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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368 size = filelength (handle);
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369 MM_GetPtr(ptr,size, mm, mmi);
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370 if(!CA_FarRead(handle,*ptr,size, mm))
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380 ============================================================================
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382 COMPRESSION routines, see JHUFF.C for more
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384 ============================================================================
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392 = CAL_OptimizeNodes
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394 = Goes through a huffman table and changes the 256-511 node numbers to the
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395 = actular address of the node. Must be called before CAL_HuffExpand
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400 void CAL_OptimizeNodes(huffnode *table)
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407 for (i=0;i<255;i++)
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409 if (node->bit0 >= 256)
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410 node->bit0 = (unsigned)(table+(node->bit0-256));
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411 if (node->bit1 >= 256)
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412 node->bit1 = (unsigned)(table+(node->bit1-256));
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420 ======================
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424 = Length is the length of the EXPANDED data
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426 ======================
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429 /*++++void CAL_HuffExpand (byte huge *source, byte huge *dest,
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430 long length,huffnode *hufftable)
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432 // unsigned bit,byte,node,code;
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433 unsigned sourceseg,sourceoff,destseg,destoff,endoff;
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435 // huffnode *nodeon;
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437 headptr = hufftable+254; // head node is allways node 254
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439 source++; // normalize
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444 sourceseg = FP_SEG(source);
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445 sourceoff = FP_OFF(source);
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446 destseg = FP_SEG(dest);
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447 destoff = FP_OFF(dest);
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448 endoff = destoff+length;
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453 // ss:bx node pointer
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456 if (length <0xfff0)
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459 //--------------------------
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460 // expand less than 64k of data
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461 //--------------------------
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473 mov ch,[si] // load first byte
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478 test ch,cl // bit set?
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480 mov dx,[ss:bx] // take bit0 path from node
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481 shl cl,1 // advance to next bit position
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486 asm mov dx,[ss:bx+2] // take bit1 path
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487 asm shl cl,1 // advance to next bit position
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488 asm jnc sourceupshort
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491 asm mov ch,[si] // load next byte
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493 asm mov cl,1 // back to first bit
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496 asm or dh,dh // if dx<256 its a byte, else move node
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497 asm jz storebyteshort
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498 asm mov bx,dx // next node = (huffnode *)code
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499 asm jmp expandshort
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503 asm inc di // write a decopmpressed byte out
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504 asm mov bx,[headptr] // back to the head node for next bit
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506 asm cmp di,ax // done?
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507 asm jne expandshort
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513 //--------------------------
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514 // expand more than 64k of data
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515 //--------------------------
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521 asm mov bx,[headptr]
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524 asm mov si,[sourceoff]
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525 asm mov di,[destoff]
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526 asm mov es,[destseg]
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527 asm mov ds,[sourceseg]
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529 asm lodsb // load first byte
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532 asm test al,cl // bit set?
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534 asm mov dx,[ss:bx] // take bit0 path from node
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537 asm mov dx,[ss:bx+2] // take bit1 path
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540 asm shl cl,1 // advance to next bit position
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543 asm cmp si,0x10 // normalize ds:si
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550 asm mov cl,1 // back to first bit
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553 asm or dh,dh // if dx<256 its a byte, else move node
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555 asm mov bx,dx // next node = (huffnode *)code
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560 asm inc di // write a decopmpressed byte out
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561 asm mov bx,[headptr] // back to the head node for next bit
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563 asm cmp di,0x10 // normalize es:di
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571 asm sub [WORD PTR ss:length],1
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573 asm dec [WORD PTR ss:length+2]
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574 asm jns expand // when length = ffff ffff, done
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588 ======================
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590 = CAL_CarmackExpand
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592 = Length is the length of the EXPANDED data
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594 ======================
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597 #define NEARTAG 0xa7
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598 #define FARTAG 0xa8
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600 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest, unsigned length)
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602 unsigned ch,chhigh,count,offset;
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603 unsigned far *copyptr, far *inptr, far *outptr;
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614 if (chhigh == NEARTAG)
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618 { // have to insert a word containing the tag byte
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619 ch |= *((unsigned char far *)inptr)++;
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625 offset = *((unsigned char far *)inptr)++;
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626 copyptr = outptr - offset;
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629 *outptr++ = *copyptr++;
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632 else if (chhigh == FARTAG)
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636 { // have to insert a word containing the tag byte
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637 ch |= *((unsigned char far *)inptr)++;
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644 copyptr = dest + offset;
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647 *outptr++ = *copyptr++;
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661 ======================
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665 ======================
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668 long CA_RLEWCompress (unsigned huge *source, long length, unsigned huge *dest,
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672 unsigned value,count,i;
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673 unsigned huge *start,huge *end;
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677 end = source + (length+1)/2;
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686 while (*source == value && source<end)
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691 if (count>3 || value == rlewtag)
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694 // send a tag / count / value string
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703 // send word without compressing
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705 for (i=1;i<=count;i++)
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709 } while (source<end);
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711 complength = 2*(dest-start);
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717 ======================
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720 = length is EXPANDED length
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722 ======================
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725 void CA_RLEWexpand (unsigned huge *source, unsigned huge *dest,long length,
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728 // unsigned value,count,i;
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729 unsigned huge *end;
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730 unsigned sourceseg,sourceoff,destseg,destoff,endseg,endoff;
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740 if (value != rlewtag)
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748 // compressed string
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752 for (i=1;i<=count;i++)
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755 } while (dest<end);
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758 end = dest + (length)/2;
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759 sourceseg = FP_SEG(source);
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760 sourceoff = FP_OFF(source);
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761 destseg = FP_SEG(dest);
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762 destoff = FP_OFF(dest);
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763 endseg = FP_SEG(end);
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764 endoff = FP_OFF(end);
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768 // ax = source value
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770 // cx = repeat counts
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773 // NOTE: A repeat count that produces 0xfff0 bytes can blow this!
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777 asm mov si,sourceoff
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780 asm mov ds,sourceseg
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791 asm mov cx,ax // repeat count
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792 asm lodsw // repeat value
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797 asm cmp si,0x10 // normalize ds:si
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809 asm cmp di,0x10 // normalize es:di
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822 asm cmp di,ss:endoff
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825 asm cmp ax,ss:endseg
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836 =============================================================================
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838 CACHE MANAGER ROUTINES
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840 =============================================================================
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844 ======================
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848 ======================
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851 /*void CAL_SetupGrFile (void)
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856 #ifdef GRHEADERLINKED
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858 #if GRMODE == EGAGR
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859 grhuffman = (huffnode *)&EGAdict;
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860 grstarts = (long _seg *)FP_SEG(&EGAhead);
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862 #if GRMODE == CGAGR
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863 grhuffman = (huffnode *)&CGAdict;
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864 grstarts = (long _seg *)FP_SEG(&CGAhead);
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867 CAL_OptimizeNodes (grhuffman);
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872 // load ???dict.ext (huffman dictionary for graphics files)
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875 if ((handle = open(GREXT"DICT."EXT,
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876 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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877 Quit ("Can't open "GREXT"DICT."EXT"!");
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879 read(handle, &grhuffman, sizeof(grhuffman));
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881 CAL_OptimizeNodes (grhuffman);
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883 // load the data offsets from ???head.ext
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885 MM_GetPtr (&(memptr)grstarts,(NUMCHUNKS+1)*FILEPOSSIZE);
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887 if ((handle = open(GREXT"HEAD."EXT,
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888 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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889 Quit ("Can't open "GREXT"HEAD."EXT"!");
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891 CA_FarRead(handle, (memptr)grstarts, (NUMCHUNKS+1)*FILEPOSSIZE);
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899 // Open the graphics file, leaving it open until the game is finished
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901 grhandle = open(GREXT"GRAPH."EXT, O_RDONLY | O_BINARY);
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902 if (grhandle == -1)
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903 Quit ("Cannot open "GREXT"GRAPH."EXT"!");
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907 // load the pic and sprite headers into the arrays in the data segment
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910 MM_GetPtr(&(memptr)pictable,NUMPICS*sizeof(pictabletype));
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911 CAL_GetGrChunkLength(STRUCTPIC); // position file pointer
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912 MM_GetPtr(&compseg,chunkcomplen);
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913 CA_FarRead (grhandle,compseg,chunkcomplen);
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914 CAL_HuffExpand (compseg, (byte huge *)pictable,NUMPICS*sizeof(pictabletype),grhuffman);
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915 MM_FreePtr(&compseg);
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919 MM_GetPtr(&(memptr)picmtable,NUMPICM*sizeof(pictabletype));
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920 CAL_GetGrChunkLength(STRUCTPICM); // position file pointer
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921 MM_GetPtr(&compseg,chunkcomplen);
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922 CA_FarRead (grhandle,compseg,chunkcomplen);
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923 CAL_HuffExpand (compseg, (byte huge *)picmtable,NUMPICS*sizeof(pictabletype),grhuffman);
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924 MM_FreePtr(&compseg);
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928 MM_GetPtr(&(memptr)spritetable,NUMSPRITES*sizeof(spritetabletype));
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929 CAL_GetGrChunkLength(STRUCTSPRITE); // position file pointer
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930 MM_GetPtr(&compseg,chunkcomplen);
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931 CA_FarRead (grhandle,compseg,chunkcomplen);
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932 CAL_HuffExpand (compseg, (byte huge *)spritetable,NUMSPRITES*sizeof(spritetabletype),grhuffman);
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933 MM_FreePtr(&compseg);
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938 //==========================================================================
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942 ======================
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946 ======================
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949 /*void CAL_SetupMapFile (void)
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955 // load maphead.ext (offsets and tileinfo for map file)
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957 #ifndef MAPHEADERLINKED
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958 if ((handle = open("MAPHEAD."EXT,
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959 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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960 Quit ("Can't open MAPHEAD."EXT"!");
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961 length = filelength(handle);
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962 MM_GetPtr (&(memptr)tinf,length);
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963 CA_FarRead(handle, tinf, length);
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967 tinf = (byte _seg *)FP_SEG(&maphead);
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972 // open the data file
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974 #ifdef MAPHEADERLINKED
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975 if ((maphandle = open("GAMEMAPS."EXT,
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976 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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977 Quit ("Can't open GAMEMAPS."EXT"!");
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979 if ((maphandle = open("MAPTEMP."EXT,
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980 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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981 Quit ("Can't open MAPTEMP."EXT"!");
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985 //==========================================================================
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989 ======================
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991 = CAL_SetupAudioFile
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993 ======================
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996 /*void CAL_SetupAudioFile (void)
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1002 // load maphead.ext (offsets and tileinfo for map file)
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1004 #ifndef AUDIOHEADERLINKED
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1005 if ((handle = open("AUDIOHED."EXT,
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1006 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1007 Quit ("Can't open AUDIOHED."EXT"!");
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1008 length = filelength(handle);
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1009 MM_GetPtr (&(memptr)audiostarts,length);
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1010 CA_FarRead(handle, (byte far *)audiostarts, length);
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1013 audiohuffman = (huffnode *)&audiodict;
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1014 CAL_OptimizeNodes (audiohuffman);
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1015 audiostarts = (long _seg *)FP_SEG(&audiohead);
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1019 // open the data file
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1021 #ifndef AUDIOHEADERLINKED
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1022 if ((audiohandle = open("AUDIOT."EXT,
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1023 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1024 Quit ("Can't open AUDIOT."EXT"!");
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1026 if ((audiohandle = open("AUDIO."EXT,
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1027 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1028 Quit ("Can't open AUDIO."EXT"!");
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1032 //==========================================================================
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1036 ======================
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1040 = Open all files and load in headers
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1042 ======================
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1045 void CA_Startup(void)
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1048 unlink("PROFILE.TXT");
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1049 profilehandle = open("PROFILE.TXT", O_CREAT | O_WRONLY | O_TEXT);
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1052 // MDM begin - (GAMERS EDGE)
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1054 if(!FindFile("AUDIO."EXT,NULL,2))
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1055 Quit("CA_Startup(): Can't find audio files.");
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1060 CAL_SetupAudioFile();
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1063 // MDM begin - (GAMERS EDGE)
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1065 if (!FindFile("GAMEMAPS."EXT,NULL,1))
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1066 Quit("CA_Startup(): Can't find level files.");
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1071 CAL_SetupMapFile ();
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1074 // MDM begin - (GAMERS EDGE)
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1076 if (!FindFile("EGAGRAPH."EXT,NULL,2))
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1077 Quit("CA_Startup(): Can't find graphics files.");
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1081 #ifndef NOGRAPHICS
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1082 CAL_SetupGrFile ();
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1089 drawcachebox = CAL_DialogDraw;
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1090 updatecachebox = CAL_DialogUpdate;
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1091 finishcachebox = CAL_DialogFinish;*/
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1094 //==========================================================================
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1098 ======================
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1102 = Closes all files
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1104 ======================
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1107 void CA_Shutdown(void)
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1110 close(profilehandle);
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1115 close(audiohandle);*/
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1118 //===========================================================================
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1121 ======================
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1123 = CA_CacheAudioChunk
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1125 ======================
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1128 void CA_CacheAudioChunk (int chunk)
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1130 long pos,compressed;
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1131 #ifdef AUDIOHEADERLINKED
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1133 memptr bigbufferseg;
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1137 if (audiosegs[chunk])
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1139 MM_SetPurge (&(memptr)audiosegs[chunk],0);
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1140 return; // allready in memory
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1143 // MDM begin - (GAMERS EDGE)
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1145 if (!FindFile("AUDIO."EXT,NULL,2))
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1146 Quit("CA_CacheAudioChunk(): Can't find audio files.");
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1151 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
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1152 // a larger buffer
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1154 pos = audiostarts[chunk];
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1155 compressed = audiostarts[chunk+1]-pos;
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1157 lseek(audiohandle,pos,SEEK_SET);
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1159 #ifndef AUDIOHEADERLINKED
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1161 MM_GetPtr (&(memptr)audiosegs[chunk],compressed);
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1165 CA_FarRead(audiohandle,audiosegs[chunk],compressed);
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1169 if (compressed<=BUFFERSIZE)
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1171 CA_FarRead(audiohandle,bufferseg,compressed);
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1172 source = bufferseg;
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1176 MM_GetPtr(&bigbufferseg,compressed);
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1179 MM_SetLock (&bigbufferseg,true);
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1180 CA_FarRead(audiohandle,bigbufferseg,compressed);
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1181 source = bigbufferseg;
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1184 expanded = *(long far *)source;
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1185 source += 4; // skip over length
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1186 MM_GetPtr (&(memptr)audiosegs[chunk],expanded);
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1189 CAL_HuffExpand (source,audiosegs[chunk],expanded,audiohuffman);
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1192 if (compressed>BUFFERSIZE)
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1193 MM_FreePtr(&bigbufferseg);
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1197 //===========================================================================
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1200 ======================
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1202 = CA_LoadAllSounds
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1204 = Purges all sounds, then loads all new ones (mode switch)
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1206 ======================
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1209 void CA_LoadAllSounds (void)
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1213 switch (oldsoundmode)
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1218 start = STARTPCSOUNDS;
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1221 start = STARTADLIBSOUNDS;
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1225 for (i=0;i<NUMSOUNDS;i++,start++)
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1226 if (audiosegs[start])
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1227 MM_SetPurge (&(memptr)audiosegs[start],3); // make purgable
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1231 switch (SoundMode)
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1236 start = STARTPCSOUNDS;
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1239 start = STARTADLIBSOUNDS;
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1243 for (i=0;i<NUMSOUNDS;i++,start++)
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1244 CA_CacheAudioChunk (start);
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1246 oldsoundmode = SoundMode;
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1249 //===========================================================================
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1251 //++++#if GRMODE == EGAGR
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1254 ======================
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1258 = Make a shifted (one byte wider) copy of a sprite into another area
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1260 ======================
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1263 unsigned static sheight,swidth;
\r
1264 boolean static dothemask;
\r
1266 void CAL_ShiftSprite (unsigned segment,unsigned source,unsigned dest,
\r
1267 unsigned width, unsigned height, unsigned pixshift, boolean domask)
\r
1270 sheight = height; // because we are going to reassign bp
\r
1272 dothemask = domask;
\r
1274 asm mov ax,[segment]
\r
1275 asm mov ds,ax // source and dest are in same segment, and all local
\r
1277 asm mov bx,[source]
\r
1280 asm mov bp,[pixshift]
\r
1282 asm mov bp,WORD PTR [shifttabletable+bp] // bp holds pointer to shift table
\r
1284 asm cmp [ss:dothemask],0
\r
1288 // table shift the mask
\r
1290 asm mov dx,[ss:sheight]
\r
1294 asm mov BYTE PTR [di],255 // 0xff first byte
\r
1295 asm mov cx,ss:[swidth]
\r
1299 asm mov al,[bx] // source
\r
1301 asm inc bx // next source byte
\r
1305 asm mov ax,[bp+si] // table shift into two bytes
\r
1307 asm and [di],al // and with first byte
\r
1309 asm mov [di],ah // replace next byte
\r
1311 asm loop domaskbyte
\r
1313 asm inc di // the last shifted byte has 1s in it
\r
1320 // table shift the data
\r
1322 asm mov dx,ss:[sheight]
\r
1324 asm shl dx,1 // four planes of data
\r
1328 asm mov BYTE PTR [di],0 // 0 first byte
\r
1329 asm mov cx,ss:[swidth]
\r
1333 asm mov al,[bx] // source
\r
1334 asm inc bx // next source byte
\r
1338 asm mov ax,[bp+si] // table shift into two bytes
\r
1339 asm or [di],al // or with first byte
\r
1341 asm mov [di],ah // replace next byte
\r
1343 asm loop dodatabyte
\r
1345 asm inc di // the last shifted byte has 0s in it
\r
1353 asm mov ax,ss // restore data segment
\r
1360 //===========================================================================
\r
1363 ======================
\r
1367 = Generate shifts and set up sprite structure for a given sprite
\r
1369 ======================
\r
1372 void CAL_CacheSprite (int chunk, byte far *compressed)
\r
1375 unsigned shiftstarts[5];
\r
1376 unsigned smallplane,bigplane,expanded;
\r
1377 spritetabletype far *spr;
\r
1378 spritetype _seg *dest;
\r
1380 #if GRMODE == CGAGR
\r
1382 // CGA has no pel panning, so shifts are never needed
\r
1384 spr = &spritetable[chunk-STARTSPRITES];
\r
1385 smallplane = spr->width*spr->height;
\r
1386 MM_GetPtr (&grsegs[chunk],smallplane*2+MAXSHIFTS*6);
\r
1389 dest = (spritetype _seg *)grsegs[chunk];
\r
1390 dest->sourceoffset[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1391 dest->planesize[0] = smallplane;
\r
1392 dest->width[0] = spr->width;
\r
1395 // expand the unshifted shape
\r
1397 CAL_HuffExpand (compressed, &dest->data[0],smallplane*2,grhuffman);
\r
1402 #if GRMODE == EGAGR
\r
1405 // calculate sizes
\r
1407 spr = &spritetable[chunk-STARTSPRITES];
\r
1408 smallplane = spr->width*spr->height;
\r
1409 bigplane = (spr->width+1)*spr->height;
\r
1411 shiftstarts[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1412 shiftstarts[1] = shiftstarts[0] + smallplane*5; // 5 planes in a sprite
\r
1413 shiftstarts[2] = shiftstarts[1] + bigplane*5;
\r
1414 shiftstarts[3] = shiftstarts[2] + bigplane*5;
\r
1415 shiftstarts[4] = shiftstarts[3] + bigplane*5; // nothing ever put here
\r
1417 expanded = shiftstarts[spr->shifts];
\r
1418 MM_GetPtr (&grsegs[chunk],expanded);
\r
1421 dest = (spritetype _seg *)grsegs[chunk];
\r
1424 // expand the unshifted shape
\r
1426 CAL_HuffExpand (compressed, &dest->data[0],smallplane*5,grhuffman);
\r
1429 // make the shifts!
\r
1431 switch (spr->shifts)
\r
1436 dest->sourceoffset[i] = shiftstarts[0];
\r
1437 dest->planesize[i] = smallplane;
\r
1438 dest->width[i] = spr->width;
\r
1445 dest->sourceoffset[i] = shiftstarts[0];
\r
1446 dest->planesize[i] = smallplane;
\r
1447 dest->width[i] = spr->width;
\r
1451 dest->sourceoffset[i] = shiftstarts[1];
\r
1452 dest->planesize[i] = bigplane;
\r
1453 dest->width[i] = spr->width+1;
\r
1455 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1456 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1460 dest->sourceoffset[0] = shiftstarts[0];
\r
1461 dest->planesize[0] = smallplane;
\r
1462 dest->width[0] = spr->width;
\r
1464 dest->sourceoffset[1] = shiftstarts[1];
\r
1465 dest->planesize[1] = bigplane;
\r
1466 dest->width[1] = spr->width+1;
\r
1467 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1468 dest->sourceoffset[1],spr->width,spr->height,2,true);
\r
1470 dest->sourceoffset[2] = shiftstarts[2];
\r
1471 dest->planesize[2] = bigplane;
\r
1472 dest->width[2] = spr->width+1;
\r
1473 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1474 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1476 dest->sourceoffset[3] = shiftstarts[3];
\r
1477 dest->planesize[3] = bigplane;
\r
1478 dest->width[3] = spr->width+1;
\r
1479 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1480 dest->sourceoffset[3],spr->width,spr->height,6,true);
\r
1485 Quit ("CAL_CacheSprite: Bad shifts number!");
\r
1491 //===========================================================================
\r
1495 ======================
\r
1497 = CAL_ExpandGrChunk
\r
1499 = Does whatever is needed with a pointer to a compressed chunk
\r
1501 ======================
\r
1504 void CAL_ExpandGrChunk (int chunk, byte far *source)
\r
1509 if (chunk >= STARTTILE8 && chunk < STARTEXTERNS)
\r
1512 // expanded sizes of tile8/16/32 are implicit
\r
1515 #if GRMODE == EGAGR
\r
1517 #define MASKBLOCK 40
\r
1520 #if GRMODE == CGAGR
\r
1522 #define MASKBLOCK 32
\r
1525 if (chunk<STARTTILE8M) // tile 8s are all in one chunk!
\r
1526 expanded = BLOCK*NUMTILE8;
\r
1527 else if (chunk<STARTTILE16)
\r
1528 expanded = MASKBLOCK*NUMTILE8M;
\r
1529 else if (chunk<STARTTILE16M) // all other tiles are one/chunk
\r
1530 expanded = BLOCK*4;
\r
1531 else if (chunk<STARTTILE32)
\r
1532 expanded = MASKBLOCK*4;
\r
1533 else if (chunk<STARTTILE32M)
\r
1534 expanded = BLOCK*16;
\r
1536 expanded = MASKBLOCK*16;
\r
1541 // everything else has an explicit size longword
\r
1543 expanded = *(long far *)source;
\r
1544 source += 4; // skip over length
\r
1548 // allocate final space, decompress it, and free bigbuffer
\r
1549 // Sprites need to have shifts made and various other junk
\r
1551 if (chunk>=STARTSPRITES && chunk< STARTTILE8)
\r
1552 CAL_CacheSprite(chunk,source);
\r
1555 MM_GetPtr (&grsegs[chunk],expanded);
\r
1558 CAL_HuffExpand (source,grsegs[chunk],expanded,grhuffman);
\r
1564 ======================
\r
1568 = Gets a chunk off disk, optimizing reads to general buffer
\r
1570 ======================
\r
1573 void CAL_ReadGrChunk (int chunk)
\r
1575 long pos,compressed;
\r
1576 memptr bigbufferseg;
\r
1581 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1582 // a larger buffer
\r
1584 pos = GRFILEPOS(chunk);
\r
1585 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1589 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1592 compressed = GRFILEPOS(next)-pos;
\r
1594 lseek(grhandle,pos,SEEK_SET);
\r
1596 if (compressed<=BUFFERSIZE)
\r
1598 CA_FarRead(grhandle,bufferseg,compressed);
\r
1599 source = bufferseg;
\r
1603 MM_GetPtr(&bigbufferseg,compressed);
\r
1606 MM_SetLock (&bigbufferseg,true);
\r
1607 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
1608 source = bigbufferseg;
\r
1611 CAL_ExpandGrChunk (chunk,source);
\r
1613 if (compressed>BUFFERSIZE)
\r
1614 MM_FreePtr(&bigbufferseg);
\r
1618 ======================
\r
1622 = Makes sure a given chunk is in memory, loadiing it if needed
\r
1624 ======================
\r
1627 void CA_CacheGrChunk (int chunk)
\r
1629 long pos,compressed;
\r
1630 memptr bigbufferseg;
\r
1634 grneeded[chunk] |= ca_levelbit; // make sure it doesn't get removed
\r
1635 if (grsegs[chunk])
\r
1637 MM_SetPurge (&grsegs[chunk],0);
\r
1638 return; // allready in memory
\r
1641 // MDM begin - (GAMERS EDGE)
\r
1643 if (!FindFile("EGAGRAPH."EXT,NULL,2))
\r
1644 Quit("CA_CacheGrChunk(): Can't find graphics files.");
\r
1649 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1650 // a larger buffer
\r
1652 pos = GRFILEPOS(chunk);
\r
1653 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1657 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1660 compressed = GRFILEPOS(next)-pos;
\r
1662 lseek(grhandle,pos,SEEK_SET);
\r
1664 if (compressed<=BUFFERSIZE)
\r
1666 CA_FarRead(grhandle,bufferseg,compressed);
\r
1667 source = bufferseg;
\r
1671 MM_GetPtr(&bigbufferseg,compressed);
\r
1672 MM_SetLock (&bigbufferseg,true);
\r
1673 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
1674 source = bigbufferseg;
\r
1677 CAL_ExpandGrChunk (chunk,source);
\r
1679 if (compressed>BUFFERSIZE)
\r
1680 MM_FreePtr(&bigbufferseg);
\r
1685 //==========================================================================
\r
1688 ======================
\r
1692 ======================
\r
1695 void CA_CacheMap (int mapnum)
\r
1697 long pos,compressed;
\r
1699 memptr *dest,bigbufferseg;
\r
1701 unsigned far *source;
\r
1702 #ifdef MAPHEADERLINKED
\r
1703 memptr buffer2seg;
\r
1708 // MDM begin - (GAMERS EDGE)
\r
1710 if (!FindFile("GAMEMAPS."EXT,NULL,1))
\r
1711 Quit("CA_CacheMap(): Can't find level files.");
\r
1717 // free up memory from last map
\r
1719 if (mapon>-1 && mapheaderseg[mapon])
\r
1720 MM_SetPurge (&(memptr)mapheaderseg[mapon],3);
\r
1721 for (plane=0;plane<MAPPLANES;plane++)
\r
1722 if (mapsegs[plane])
\r
1723 MM_FreePtr (&(memptr)mapsegs[plane]);
\r
1729 // load map header
\r
1730 // The header will be cached if it is still around
\r
1732 if (!mapheaderseg[mapnum])
\r
1734 pos = ((mapfiletype _seg *)tinf)->headeroffsets[mapnum];
\r
1735 if (pos<0) // $FFFFFFFF start is a sparse map
\r
1736 Quit ("CA_CacheMap: Tried to load a non existent map!");
\r
1738 MM_GetPtr(&(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1739 lseek(maphandle,pos,SEEK_SET);
\r
1740 CA_FarRead (maphandle,(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1743 MM_SetPurge (&(memptr)mapheaderseg[mapnum],0);
\r
1746 // load the planes in
\r
1747 // If a plane's pointer still exists it will be overwritten (levels are
\r
1748 // allways reloaded, never cached)
\r
1751 size = mapheaderseg[mapnum]->width * mapheaderseg[mapnum]->height * 2;
\r
1753 for (plane = 0; plane<MAPPLANES; plane++)
\r
1755 pos = mapheaderseg[mapnum]->planestart[plane];
\r
1756 compressed = mapheaderseg[mapnum]->planelength[plane];
\r
1759 continue; // the plane is not used in this game
\r
1761 dest = &(memptr)mapsegs[plane];
\r
1762 MM_GetPtr(dest,size);
\r
1764 lseek(maphandle,pos,SEEK_SET);
\r
1765 if (compressed<=BUFFERSIZE)
\r
1766 source = bufferseg;
\r
1769 MM_GetPtr(&bigbufferseg,compressed);
\r
1770 MM_SetLock (&bigbufferseg,true);
\r
1771 source = bigbufferseg;
\r
1774 CA_FarRead(maphandle,(byte far *)source,compressed);
\r
1775 #ifdef MAPHEADERLINKED
\r
1777 // unhuffman, then unRLEW
\r
1778 // The huffman'd chunk has a two byte expanded length first
\r
1779 // The resulting RLEW chunk also does, even though it's not really
\r
1782 expanded = *source;
\r
1784 MM_GetPtr (&buffer2seg,expanded);
\r
1785 CAL_CarmackExpand (source, (unsigned far *)buffer2seg,expanded);
\r
1786 CA_RLEWexpand (((unsigned far *)buffer2seg)+1,*dest,size,
\r
1787 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
1788 MM_FreePtr (&buffer2seg);
\r
1792 // unRLEW, skipping expanded length
\r
1794 CA_RLEWexpand (source+1, *dest,size,
\r
1795 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
1798 if (compressed>BUFFERSIZE)
\r
1799 MM_FreePtr(&bigbufferseg);
\r
1803 //===========================================================================
\r
1806 ======================
\r
1810 = Goes up a bit level in the needed lists and clears it out.
\r
1811 = Everything is made purgable
\r
1813 ======================
\r
1816 void CA_UpLevel (void)
\r
1818 if (ca_levelnum==7)
\r
1819 Quit ("CA_UpLevel: Up past level 7!");
\r
1825 //===========================================================================
\r
1828 ======================
\r
1832 = Goes down a bit level in the needed lists and recaches
\r
1833 = everything from the lower level
\r
1835 ======================
\r
1838 void CA_DownLevel (void)
\r
1841 Quit ("CA_DownLevel: Down past level 0!");
\r
1844 CA_CacheMarks(NULL);
\r
1847 //===========================================================================
\r
1850 ======================
\r
1854 = Clears out all the marks at the current level
\r
1856 ======================
\r
1859 void CA_ClearMarks (void)
\r
1863 for (i=0;i<NUMCHUNKS;i++)
\r
1864 grneeded[i]&=~ca_levelbit;
\r
1868 //===========================================================================
\r
1871 ======================
\r
1873 = CA_ClearAllMarks
\r
1875 = Clears out all the marks on all the levels
\r
1877 ======================
\r
1880 void CA_ClearAllMarks (void)
\r
1882 _fmemset (grneeded,0,sizeof(grneeded));
\r
1888 //===========================================================================
\r
1891 ======================
\r
1895 ======================
\r
1898 void CA_FreeGraphics (void)
\r
1902 for (i=0;i<NUMCHUNKS;i++)
\r
1904 MM_SetPurge (&(memptr)grsegs[i],3);
\r
1909 ======================
\r
1913 = Make everything possible purgable
\r
1915 ======================
\r
1918 void CA_SetAllPurge (void)
\r
1925 // free cursor sprite and background save
\r
1930 // free map headers and map planes
\r
1932 for (i=0;i<NUMMAPS;i++)
\r
1933 if (mapheaderseg[i])
\r
1934 MM_SetPurge (&(memptr)mapheaderseg[i],3);
\r
1938 MM_FreePtr (&(memptr)mapsegs[i]);
\r
1943 for (i=0;i<NUMSNDCHUNKS;i++)
\r
1945 MM_SetPurge (&(memptr)audiosegs[i],3);
\r
1950 CA_FreeGraphics ();
\r
1954 void CA_SetGrPurge (void)
\r
1961 for (i=0;i<NUMCHUNKS;i++)
\r
1963 MM_SetPurge (&(memptr)grsegs[i],3);
\r
1967 //===========================================================================
\r
1971 ======================
\r
1975 ======================
\r
1978 #define NUMBARS (17l*8)
\r
1981 unsigned thx,thy,lastx;
\r
1982 long barx,barstep;
\r
1984 void CAL_DialogDraw (char *title,unsigned numcache)
\r
1986 unsigned homex,homey,x;
\r
1988 barstep = (NUMBARS<<16)/numcache;
\r
1991 // draw dialog window (masked tiles 12 - 20 are window borders)
\r
1993 US_CenterWindow (20,8);
\r
1997 US_CPrint ("Loading");
\r
1998 fontcolor = F_SECONDCOLOR;
\r
1999 US_CPrint (title);
\r
2000 fontcolor = F_BLACK;
\r
2003 // draw thermometer bar
\r
2007 VWB_DrawTile8(thx,thy,0); // CAT3D numbers
\r
2008 VWB_DrawTile8(thx,thy+8,3);
\r
2009 VWB_DrawTile8(thx,thy+16,6);
\r
2010 VWB_DrawTile8(thx+17*8,thy,2);
\r
2011 VWB_DrawTile8(thx+17*8,thy+8,5);
\r
2012 VWB_DrawTile8(thx+17*8,thy+16,8);
\r
2013 for (x=thx+8;x<thx+17*8;x+=8)
\r
2015 VWB_DrawTile8(x,thy,1);
\r
2016 VWB_DrawTile8(x,thy+8,4);
\r
2017 VWB_DrawTile8(x,thy+16,7);
\r
2020 thx += 4; // first line location
\r
2022 barx = (long)thx<<16;
\r
2025 VW_UpdateScreen();
\r
2030 ======================
\r
2032 = CAL_DialogUpdate
\r
2034 ======================
\r
2037 void CAL_DialogUpdate (void)
\r
2043 if (xh - lastx > BARSTEP)
\r
2045 for (x=lastx;x<=xh;x++)
\r
2046 #if GRMODE == EGAGR
\r
2047 VWB_Vlin (thy,thy+13,x,14);
\r
2049 #if GRMODE == CGAGR
\r
2050 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2053 VW_UpdateScreen();
\r
2058 ======================
\r
2060 = CAL_DialogFinish
\r
2062 ======================
\r
2065 void CAL_DialogFinish (void)
\r
2069 xh = thx + NUMBARS;
\r
2070 for (x=lastx;x<=xh;x++)
\r
2071 #if GRMODE == EGAGR
\r
2072 VWB_Vlin (thy,thy+13,x,14);
\r
2074 #if GRMODE == CGAGR
\r
2075 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2077 VW_UpdateScreen();
\r
2081 //===========================================================================
\r
2084 ======================
\r
2088 ======================
\r
2090 #define MAXEMPTYREAD 1024
\r
2092 void CA_CacheMarks (char *title)
\r
2095 int i,next,numcache;
\r
2096 long pos,endpos,nextpos,nextendpos,compressed;
\r
2097 long bufferstart,bufferend; // file position of general buffer
\r
2099 memptr bigbufferseg;
\r
2101 dialog = (title!=NULL);
\r
2105 // go through and make everything not needed purgable
\r
2107 for (i=0;i<NUMCHUNKS;i++)
\r
2108 if (grneeded[i]&ca_levelbit)
\r
2110 if (grsegs[i]) // its allready in memory, make
\r
2111 MM_SetPurge(&grsegs[i],0); // sure it stays there!
\r
2117 if (grsegs[i]) // not needed, so make it purgeable
\r
2118 MM_SetPurge(&grsegs[i],3);
\r
2121 if (!numcache) // nothing to cache!
\r
2124 // MDM begin - (GAMERS EDGE)
\r
2126 if (!FindFile("EGAGRAPH."EXT,NULL,2))
\r
2127 Quit("CA_CacheMarks(): Can't find graphics files.");
\r
2134 write(profilehandle,title,strlen(title));
\r
2135 write(profilehandle,"\n",1);
\r
2138 drawcachebox(title,numcache);
\r
2142 // go through and load in anything still needed
\r
2144 bufferstart = bufferend = 0; // nothing good in buffer now
\r
2146 for (i=0;i<NUMCHUNKS;i++)
\r
2147 if ( (grneeded[i]&ca_levelbit) && !grsegs[i])
\r
2150 // update thermometer
\r
2152 if (dialog && updatecachebox)
\r
2153 updatecachebox ();
\r
2155 pos = GRFILEPOS(i);
\r
2160 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
2163 compressed = GRFILEPOS(next)-pos;
\r
2164 endpos = pos+compressed;
\r
2166 if (compressed<=BUFFERSIZE)
\r
2168 if (bufferstart<=pos
\r
2169 && bufferend>= endpos)
\r
2171 // data is allready in buffer
\r
2172 source = (byte _seg *)bufferseg+(pos-bufferstart);
\r
2176 // load buffer with a new block from disk
\r
2177 // try to get as many of the needed blocks in as possible
\r
2178 while ( next < NUMCHUNKS )
\r
2180 while (next < NUMCHUNKS &&
\r
2181 !(grneeded[next]&ca_levelbit && !grsegs[next]))
\r
2183 if (next == NUMCHUNKS)
\r
2186 nextpos = GRFILEPOS(next);
\r
2187 while (GRFILEPOS(++next) == -1) // skip past any sparse tiles
\r
2189 nextendpos = GRFILEPOS(next);
\r
2190 if (nextpos - endpos <= MAXEMPTYREAD
\r
2191 && nextendpos-pos <= BUFFERSIZE)
\r
2192 endpos = nextendpos;
\r
2194 next = NUMCHUNKS; // read pos to posend
\r
2197 lseek(grhandle,pos,SEEK_SET);
\r
2198 CA_FarRead(grhandle,bufferseg,endpos-pos);
\r
2199 bufferstart = pos;
\r
2200 bufferend = endpos;
\r
2201 source = bufferseg;
\r
2206 // big chunk, allocate temporary buffer
\r
2207 MM_GetPtr(&bigbufferseg,compressed);
\r
2210 MM_SetLock (&bigbufferseg,true);
\r
2211 lseek(grhandle,pos,SEEK_SET);
\r
2212 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
2213 source = bigbufferseg;
\r
2216 CAL_ExpandGrChunk (i,source);
\r
2220 if (compressed>BUFFERSIZE)
\r
2221 MM_FreePtr(&bigbufferseg);
\r
2226 // finish up any thermometer remnants
\r
2228 if (dialog && finishcachebox)
\r