1 /* Catacomb Armageddon 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 "LIB_HEAD.H"
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35 //#include "ID_STRS.H"
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40 #define THREEBYTEGRSTARTS
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43 =============================================================================
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47 =============================================================================
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52 unsigned bit0,bit1; // 0-255 is a character, > is a pointer to a node
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59 long headeroffsets[100];
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65 =============================================================================
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69 =============================================================================
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75 unsigned _seg *mapsegs[3];
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76 maptype _seg *mapheaderseg[NUMMAPS];
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77 byte _seg *audiosegs[NUMSNDCHUNKS];
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78 void _seg *grsegs[NUMCHUNKS];
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80 byte far grneeded[NUMCHUNKS];
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81 byte ca_levelbit,ca_levelnum;
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83 int profilehandle,debughandle;
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85 void (*drawcachebox) (char *title, unsigned numcache);
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86 void (*updatecachebox) (void);
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87 void (*finishcachebox) (void);
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90 =============================================================================
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94 =============================================================================
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97 extern long far CGAhead;
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98 extern long far EGAhead;
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99 extern byte CGAdict;
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100 extern byte EGAdict;
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101 extern byte far maphead;
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102 extern byte mapdict;
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103 extern byte far audiohead;
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104 extern byte audiodict;
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107 long _seg *grstarts; // array of offsets in egagraph, -1 for sparse
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108 long _seg *audiostarts; // array of offsets in audio / audiot
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110 #ifdef GRHEADERLINKED
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111 huffnode *grhuffman;
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113 huffnode grhuffman[255];
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116 #ifdef AUDIOHEADERLINKED
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117 huffnode *audiohuffman;
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119 huffnode audiohuffman[255];
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123 int grhandle; // handle to EGAGRAPH
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124 int maphandle; // handle to MAPTEMP / GAMEMAPS
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125 int audiohandle; // handle to AUDIOT / AUDIO
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127 long chunkcomplen,chunkexplen;
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129 SDMode oldsoundmode;
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133 void CAL_DialogDraw (char *title,unsigned numcache);
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134 void CAL_DialogUpdate (void);
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135 void CAL_DialogFinish (void);
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136 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest,
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140 #ifdef THREEBYTEGRSTARTS
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141 #define FILEPOSSIZE 3
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142 //#define GRFILEPOS(c) (*(long far *)(((byte far *)grstarts)+(c)*3)&0xffffff)
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143 long GRFILEPOS(int c)
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150 value = *(long far *)(((byte far *)grstarts)+offset);
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152 value &= 0x00ffffffl;
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154 if (value == 0xffffffl)
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160 #define FILEPOSSIZE 4
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161 #define GRFILEPOS(c) (grstarts[c])
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165 =============================================================================
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169 =============================================================================
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173 ============================
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175 = CA_OpenDebug / CA_CloseDebug
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177 = Opens a binary file with the handle "debughandle"
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179 ============================
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182 void CA_OpenDebug (void)
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184 unlink ("DEBUG.TXT");
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185 debughandle = open("DEBUG.TXT", O_CREAT | O_WRONLY | O_TEXT);
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188 void CA_CloseDebug (void)
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190 close (debughandle);
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196 ============================
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198 = CAL_GetGrChunkLength
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200 = Gets the length of an explicit length chunk (not tiles)
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201 = The file pointer is positioned so the compressed data can be read in next.
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203 ============================
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206 void CAL_GetGrChunkLength (int chunk)
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208 lseek(grhandle,GRFILEPOS(chunk),SEEK_SET);
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209 read(grhandle,&chunkexplen,sizeof(chunkexplen));
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210 chunkcomplen = GRFILEPOS(chunk+1)-GRFILEPOS(chunk)-4;
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215 ==========================
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219 = Read from a file to a far pointer
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221 ==========================
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224 boolean CA_FarRead (int handle, byte far *dest, long length)
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226 if (length>0xffffl)
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227 Quit ("CA_FarRead doesn't support 64K reads yet!");
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230 asm mov bx,[handle]
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231 asm mov cx,[WORD PTR length]
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232 asm mov dx,[WORD PTR dest]
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233 asm mov ds,[WORD PTR dest+2]
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234 asm mov ah,0x3f // READ w/handle
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241 asm cmp ax,[WORD PTR length]
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243 errno = EINVFMT; // user manager knows this is bad read
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251 ==========================
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255 = Write from a file to a far pointer
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257 ==========================
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260 boolean CA_FarWrite (int handle, byte far *source, long length)
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262 if (length>0xffffl)
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263 Quit ("CA_FarWrite doesn't support 64K reads yet!");
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266 asm mov bx,[handle]
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267 asm mov cx,[WORD PTR length]
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268 asm mov dx,[WORD PTR source]
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269 asm mov ds,[WORD PTR source+2]
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270 asm mov ah,0x40 // WRITE w/handle
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277 asm cmp ax,[WORD PTR length]
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279 errno = ENOMEM; // user manager knows this is bad write
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288 ==========================
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292 = Reads a file into an allready allocated buffer
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294 ==========================
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297 boolean CA_ReadFile (char *filename, memptr *ptr)
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302 if ((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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305 size = filelength (handle);
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306 if (!CA_FarRead (handle,*ptr,size))
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318 ==========================
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322 = Allocate space for and load a file
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324 ==========================
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327 boolean CA_LoadFile (char *filename, memptr *ptr)
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332 if ((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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335 size = filelength (handle);
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336 MM_GetPtr (ptr,size);
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337 if (!CA_FarRead (handle,*ptr,size))
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347 ============================================================================
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349 COMPRESSION routines, see JHUFF.C for more
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351 ============================================================================
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359 = CAL_OptimizeNodes
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361 = Goes through a huffman table and changes the 256-511 node numbers to the
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362 = actular address of the node. Must be called before CAL_HuffExpand
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367 void CAL_OptimizeNodes (huffnode *table)
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374 for (i=0;i<255;i++)
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376 if (node->bit0 >= 256)
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377 node->bit0 = (unsigned)(table+(node->bit0-256));
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378 if (node->bit1 >= 256)
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379 node->bit1 = (unsigned)(table+(node->bit1-256));
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387 ======================
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391 = Length is the length of the EXPANDED data
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393 ======================
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396 void CAL_HuffExpand (byte huge *source, byte huge *dest,
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397 long length,huffnode *hufftable)
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399 // unsigned bit,byte,node,code;
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400 unsigned sourceseg,sourceoff,destseg,destoff,endoff;
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402 // huffnode *nodeon;
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404 headptr = hufftable+254; // head node is allways node 254
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406 source++; // normalize
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411 sourceseg = FP_SEG(source);
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412 sourceoff = FP_OFF(source);
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413 destseg = FP_SEG(dest);
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414 destoff = FP_OFF(dest);
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415 endoff = destoff+length;
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420 // ss:bx node pointer
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423 if (length <0xfff0)
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426 //--------------------------
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427 // expand less than 64k of data
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428 //--------------------------
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430 asm mov bx,[headptr]
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432 asm mov si,[sourceoff]
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433 asm mov di,[destoff]
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434 asm mov es,[destseg]
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435 asm mov ds,[sourceseg]
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436 asm mov ax,[endoff]
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438 asm mov ch,[si] // load first byte
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443 asm test ch,cl // bit set?
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445 asm mov dx,[ss:bx] // take bit0 path from node
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446 asm shl cl,1 // advance to next bit position
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447 asm jc newbyteshort
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448 asm jnc sourceupshort
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451 asm mov dx,[ss:bx+2] // take bit1 path
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452 asm shl cl,1 // advance to next bit position
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453 asm jnc sourceupshort
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456 asm mov ch,[si] // load next byte
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458 asm mov cl,1 // back to first bit
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461 asm or dh,dh // if dx<256 its a byte, else move node
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462 asm jz storebyteshort
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463 asm mov bx,dx // next node = (huffnode *)code
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464 asm jmp expandshort
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468 asm inc di // write a decopmpressed byte out
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469 asm mov bx,[headptr] // back to the head node for next bit
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471 asm cmp di,ax // done?
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472 asm jne expandshort
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477 //--------------------------
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478 // expand more than 64k of data
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479 //--------------------------
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483 asm mov bx,[headptr]
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486 asm mov si,[sourceoff]
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487 asm mov di,[destoff]
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488 asm mov es,[destseg]
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489 asm mov ds,[sourceseg]
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491 asm lodsb // load first byte
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494 asm test al,cl // bit set?
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496 asm mov dx,[ss:bx] // take bit0 path from node
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499 asm mov dx,[ss:bx+2] // take bit1 path
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502 asm shl cl,1 // advance to next bit position
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505 asm cmp si,0x10 // normalize ds:si
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512 asm mov cl,1 // back to first bit
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515 asm or dh,dh // if dx<256 its a byte, else move node
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517 asm mov bx,dx // next node = (huffnode *)code
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522 asm inc di // write a decopmpressed byte out
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523 asm mov bx,[headptr] // back to the head node for next bit
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525 asm cmp di,0x10 // normalize es:di
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533 asm sub [WORD PTR ss:length],1
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535 asm dec [WORD PTR ss:length+2]
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536 asm jns expand // when length = ffff ffff, done
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547 ======================
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549 = CAL_CarmackExpand
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551 = Length is the length of the EXPANDED data
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553 ======================
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556 #define NEARTAG 0xa7
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557 #define FARTAG 0xa8
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559 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest, unsigned length)
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561 unsigned ch,chhigh,count,offset;
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562 unsigned far *copyptr, far *inptr, far *outptr;
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573 if (chhigh == NEARTAG)
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577 { // have to insert a word containing the tag byte
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578 ch |= *((unsigned char far *)inptr)++;
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584 offset = *((unsigned char far *)inptr)++;
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585 copyptr = outptr - offset;
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588 *outptr++ = *copyptr++;
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591 else if (chhigh == FARTAG)
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595 { // have to insert a word containing the tag byte
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596 ch |= *((unsigned char far *)inptr)++;
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603 copyptr = dest + offset;
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606 *outptr++ = *copyptr++;
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620 ======================
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624 ======================
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627 long CA_RLEWCompress (unsigned huge *source, long length, unsigned huge *dest,
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631 unsigned value,count,i;
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632 unsigned huge *start,huge *end;
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636 end = source + (length+1)/2;
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645 while (*source == value && source<end)
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650 if (count>3 || value == rlewtag)
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653 // send a tag / count / value string
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662 // send word without compressing
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664 for (i=1;i<=count;i++)
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668 } while (source<end);
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670 complength = 2*(dest-start);
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676 ======================
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679 = length is EXPANDED length
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681 ======================
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684 void CA_RLEWexpand (unsigned huge *source, unsigned huge *dest,long length,
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687 // unsigned value,count,i;
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688 unsigned huge *end;
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689 unsigned sourceseg,sourceoff,destseg,destoff,endseg,endoff;
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699 if (value != rlewtag)
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707 // compressed string
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711 for (i=1;i<=count;i++)
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714 } while (dest<end);
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717 end = dest + (length)/2;
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718 sourceseg = FP_SEG(source);
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719 sourceoff = FP_OFF(source);
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720 destseg = FP_SEG(dest);
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721 destoff = FP_OFF(dest);
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722 endseg = FP_SEG(end);
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723 endoff = FP_OFF(end);
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727 // ax = source value
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729 // cx = repeat counts
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732 // NOTE: A repeat count that produces 0xfff0 bytes can blow this!
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736 asm mov si,sourceoff
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739 asm mov ds,sourceseg
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750 asm mov cx,ax // repeat count
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751 asm lodsw // repeat value
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756 asm cmp si,0x10 // normalize ds:si
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768 asm cmp di,0x10 // normalize es:di
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781 asm cmp di,ss:endoff
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784 asm cmp ax,ss:endseg
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795 =============================================================================
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797 CACHE MANAGER ROUTINES
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799 =============================================================================
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803 ======================
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807 ======================
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810 void CAL_SetupGrFile (void)
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815 #ifdef GRHEADERLINKED
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817 #if GRMODE == EGAGR
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818 grhuffman = (huffnode *)&EGAdict;
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819 grstarts = (long _seg *)FP_SEG(&EGAhead);
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821 #if GRMODE == CGAGR
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822 grhuffman = (huffnode *)&CGAdict;
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823 grstarts = (long _seg *)FP_SEG(&CGAhead);
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826 CAL_OptimizeNodes (grhuffman);
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831 // load ???dict.ext (huffman dictionary for graphics files)
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834 if ((handle = open(GREXT"DICT."EXT,
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835 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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836 Quit ("Can't open "GREXT"DICT."EXT"!");
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838 read(handle, &grhuffman, sizeof(grhuffman));
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840 CAL_OptimizeNodes (grhuffman);
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842 // load the data offsets from ???head.ext
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844 MM_GetPtr (&(memptr)grstarts,(NUMCHUNKS+1)*FILEPOSSIZE);
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846 if ((handle = open(GREXT"HEAD."EXT,
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847 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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848 Quit ("Can't open "GREXT"HEAD."EXT"!");
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850 CA_FarRead(handle, (memptr)grstarts, (NUMCHUNKS+1)*FILEPOSSIZE);
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858 // Open the graphics file, leaving it open until the game is finished
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860 grhandle = open(GREXT"GRAPH."EXT, O_RDONLY | O_BINARY);
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861 if (grhandle == -1)
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862 Quit ("Cannot open "GREXT"GRAPH."EXT"!");
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866 // load the pic and sprite headers into the arrays in the data segment
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869 MM_GetPtr(&(memptr)pictable,NUMPICS*sizeof(pictabletype));
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870 CAL_GetGrChunkLength(STRUCTPIC); // position file pointer
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871 MM_GetPtr(&compseg,chunkcomplen);
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872 CA_FarRead (grhandle,compseg,chunkcomplen);
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873 CAL_HuffExpand (compseg, (byte huge *)pictable,NUMPICS*sizeof(pictabletype),grhuffman);
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874 MM_FreePtr(&compseg);
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878 MM_GetPtr(&(memptr)picmtable,NUMPICM*sizeof(pictabletype));
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879 CAL_GetGrChunkLength(STRUCTPICM); // position file pointer
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880 MM_GetPtr(&compseg,chunkcomplen);
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881 CA_FarRead (grhandle,compseg,chunkcomplen);
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882 CAL_HuffExpand (compseg, (byte huge *)picmtable,NUMPICS*sizeof(pictabletype),grhuffman);
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883 MM_FreePtr(&compseg);
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887 MM_GetPtr(&(memptr)spritetable,NUMSPRITES*sizeof(spritetabletype));
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888 CAL_GetGrChunkLength(STRUCTSPRITE); // position file pointer
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889 MM_GetPtr(&compseg,chunkcomplen);
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890 CA_FarRead (grhandle,compseg,chunkcomplen);
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891 CAL_HuffExpand (compseg, (byte huge *)spritetable,NUMSPRITES*sizeof(spritetabletype),grhuffman);
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892 MM_FreePtr(&compseg);
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897 //==========================================================================
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901 ======================
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905 ======================
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908 void CAL_SetupMapFile (void)
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914 // load maphead.ext (offsets and tileinfo for map file)
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916 #ifndef MAPHEADERLINKED
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917 if ((handle = open("MAPHEAD."EXT,
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918 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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919 Quit ("Can't open MAPHEAD."EXT"!");
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920 length = filelength(handle);
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921 MM_GetPtr (&(memptr)tinf,length);
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922 CA_FarRead(handle, tinf, length);
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926 tinf = (byte _seg *)FP_SEG(&maphead);
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931 // open the data file
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933 #ifdef MAPHEADERLINKED
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934 if ((maphandle = open("GAMEMAPS."EXT,
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935 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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936 Quit ("Can't open GAMEMAPS."EXT"!");
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938 if ((maphandle = open("MAPTEMP."EXT,
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939 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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940 Quit ("Can't open MAPTEMP."EXT"!");
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944 //==========================================================================
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948 ======================
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950 = CAL_SetupAudioFile
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952 ======================
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955 void CAL_SetupAudioFile (void)
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961 // load maphead.ext (offsets and tileinfo for map file)
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963 #ifndef AUDIOHEADERLINKED
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964 if ((handle = open("AUDIOHED."EXT,
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965 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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966 Quit ("Can't open AUDIOHED."EXT"!");
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967 length = filelength(handle);
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968 MM_GetPtr (&(memptr)audiostarts,length);
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969 CA_FarRead(handle, (byte far *)audiostarts, length);
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972 audiohuffman = (huffnode *)&audiodict;
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973 CAL_OptimizeNodes (audiohuffman);
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974 audiostarts = (long _seg *)FP_SEG(&audiohead);
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978 // open the data file
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980 #ifndef AUDIOHEADERLINKED
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981 if ((audiohandle = open("AUDIOT."EXT,
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982 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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983 Quit ("Can't open AUDIOT."EXT"!");
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985 if ((audiohandle = open("AUDIO."EXT,
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986 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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987 Quit ("Can't open AUDIO."EXT"!");
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991 //==========================================================================
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995 ======================
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999 = Open all files and load in headers
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1001 ======================
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1004 void CA_Startup (void)
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1007 unlink ("PROFILE.TXT");
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1008 profilehandle = open("PROFILE.TXT", O_CREAT | O_WRONLY | O_TEXT);
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1011 // MDM begin - (GAMERS EDGE)
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1013 if (!FindFile("AUDIO."EXT,NULL,2))
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1014 Quit("CA_Startup(): Can't find audio files.");
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1019 CAL_SetupAudioFile ();
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1022 // MDM begin - (GAMERS EDGE)
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1024 if (!FindFile("GAMEMAPS."EXT,NULL,1))
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1025 Quit("CA_Startup(): Can't find level files.");
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1030 CAL_SetupMapFile ();
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1033 // MDM begin - (GAMERS EDGE)
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1035 if (!FindFile("EGAGRAPH."EXT,NULL,2))
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1036 Quit("CA_Startup(): Can't find graphics files.");
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1040 #ifndef NOGRAPHICS
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1041 CAL_SetupGrFile ();
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1048 drawcachebox = CAL_DialogDraw;
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1049 updatecachebox = CAL_DialogUpdate;
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1050 finishcachebox = CAL_DialogFinish;
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1053 //==========================================================================
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1057 ======================
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1061 = Closes all files
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1063 ======================
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1066 void CA_Shutdown (void)
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1069 close (profilehandle);
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1072 close (maphandle);
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1074 close (audiohandle);
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1077 //===========================================================================
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1080 ======================
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1082 = CA_CacheAudioChunk
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1084 ======================
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1087 void CA_CacheAudioChunk (int chunk)
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1089 long pos,compressed;
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1090 #ifdef AUDIOHEADERLINKED
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1092 memptr bigbufferseg;
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1096 if (audiosegs[chunk])
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1098 MM_SetPurge (&(memptr)audiosegs[chunk],0);
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1099 return; // allready in memory
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1102 // MDM begin - (GAMERS EDGE)
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1104 if (!FindFile("AUDIO."EXT,NULL,2))
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1105 Quit("CA_CacheAudioChunk(): Can't find audio files.");
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1110 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
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1111 // a larger buffer
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1113 pos = audiostarts[chunk];
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1114 compressed = audiostarts[chunk+1]-pos;
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1116 lseek(audiohandle,pos,SEEK_SET);
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1118 #ifndef AUDIOHEADERLINKED
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1120 MM_GetPtr (&(memptr)audiosegs[chunk],compressed);
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1124 CA_FarRead(audiohandle,audiosegs[chunk],compressed);
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1128 if (compressed<=BUFFERSIZE)
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1130 CA_FarRead(audiohandle,bufferseg,compressed);
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1131 source = bufferseg;
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1135 MM_GetPtr(&bigbufferseg,compressed);
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1138 MM_SetLock (&bigbufferseg,true);
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1139 CA_FarRead(audiohandle,bigbufferseg,compressed);
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1140 source = bigbufferseg;
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1143 expanded = *(long far *)source;
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1144 source += 4; // skip over length
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1145 MM_GetPtr (&(memptr)audiosegs[chunk],expanded);
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1148 CAL_HuffExpand (source,audiosegs[chunk],expanded,audiohuffman);
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1151 if (compressed>BUFFERSIZE)
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1152 MM_FreePtr(&bigbufferseg);
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1156 //===========================================================================
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1159 ======================
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1161 = CA_LoadAllSounds
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1163 = Purges all sounds, then loads all new ones (mode switch)
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1165 ======================
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1168 void CA_LoadAllSounds (void)
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1172 switch (oldsoundmode)
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1177 start = STARTPCSOUNDS;
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1180 start = STARTADLIBSOUNDS;
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1184 for (i=0;i<NUMSOUNDS;i++,start++)
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1185 if (audiosegs[start])
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1186 MM_SetPurge (&(memptr)audiosegs[start],3); // make purgable
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1190 switch (SoundMode)
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1195 start = STARTPCSOUNDS;
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1198 start = STARTADLIBSOUNDS;
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1202 for (i=0;i<NUMSOUNDS;i++,start++)
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1203 CA_CacheAudioChunk (start);
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1205 oldsoundmode = SoundMode;
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1208 //===========================================================================
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1210 #if GRMODE == EGAGR
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1213 ======================
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1217 = Make a shifted (one byte wider) copy of a sprite into another area
\r
1219 ======================
\r
1222 unsigned static sheight,swidth;
\r
1223 boolean static dothemask;
\r
1225 void CAL_ShiftSprite (unsigned segment,unsigned source,unsigned dest,
\r
1226 unsigned width, unsigned height, unsigned pixshift, boolean domask)
\r
1229 sheight = height; // because we are going to reassign bp
\r
1231 dothemask = domask;
\r
1233 asm mov ax,[segment]
\r
1234 asm mov ds,ax // source and dest are in same segment, and all local
\r
1236 asm mov bx,[source]
\r
1239 asm mov bp,[pixshift]
\r
1241 asm mov bp,WORD PTR [shifttabletable+bp] // bp holds pointer to shift table
\r
1243 asm cmp [ss:dothemask],0
\r
1247 // table shift the mask
\r
1249 asm mov dx,[ss:sheight]
\r
1253 asm mov BYTE PTR [di],255 // 0xff first byte
\r
1254 asm mov cx,ss:[swidth]
\r
1258 asm mov al,[bx] // source
\r
1260 asm inc bx // next source byte
\r
1264 asm mov ax,[bp+si] // table shift into two bytes
\r
1266 asm and [di],al // and with first byte
\r
1268 asm mov [di],ah // replace next byte
\r
1270 asm loop domaskbyte
\r
1272 asm inc di // the last shifted byte has 1s in it
\r
1279 // table shift the data
\r
1281 asm mov dx,ss:[sheight]
\r
1283 asm shl dx,1 // four planes of data
\r
1287 asm mov BYTE PTR [di],0 // 0 first byte
\r
1288 asm mov cx,ss:[swidth]
\r
1292 asm mov al,[bx] // source
\r
1293 asm inc bx // next source byte
\r
1297 asm mov ax,[bp+si] // table shift into two bytes
\r
1298 asm or [di],al // or with first byte
\r
1300 asm mov [di],ah // replace next byte
\r
1302 asm loop dodatabyte
\r
1304 asm inc di // the last shifted byte has 0s in it
\r
1312 asm mov ax,ss // restore data segment
\r
1319 //===========================================================================
\r
1322 ======================
\r
1326 = Generate shifts and set up sprite structure for a given sprite
\r
1328 ======================
\r
1331 void CAL_CacheSprite (int chunk, byte far *compressed)
\r
1334 unsigned shiftstarts[5];
\r
1335 unsigned smallplane,bigplane,expanded;
\r
1336 spritetabletype far *spr;
\r
1337 spritetype _seg *dest;
\r
1339 #if GRMODE == CGAGR
\r
1341 // CGA has no pel panning, so shifts are never needed
\r
1343 spr = &spritetable[chunk-STARTSPRITES];
\r
1344 smallplane = spr->width*spr->height;
\r
1345 MM_GetPtr (&grsegs[chunk],smallplane*2+MAXSHIFTS*6);
\r
1348 dest = (spritetype _seg *)grsegs[chunk];
\r
1349 dest->sourceoffset[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1350 dest->planesize[0] = smallplane;
\r
1351 dest->width[0] = spr->width;
\r
1354 // expand the unshifted shape
\r
1356 CAL_HuffExpand (compressed, &dest->data[0],smallplane*2,grhuffman);
\r
1361 #if GRMODE == EGAGR
\r
1364 // calculate sizes
\r
1366 spr = &spritetable[chunk-STARTSPRITES];
\r
1367 smallplane = spr->width*spr->height;
\r
1368 bigplane = (spr->width+1)*spr->height;
\r
1370 shiftstarts[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1371 shiftstarts[1] = shiftstarts[0] + smallplane*5; // 5 planes in a sprite
\r
1372 shiftstarts[2] = shiftstarts[1] + bigplane*5;
\r
1373 shiftstarts[3] = shiftstarts[2] + bigplane*5;
\r
1374 shiftstarts[4] = shiftstarts[3] + bigplane*5; // nothing ever put here
\r
1376 expanded = shiftstarts[spr->shifts];
\r
1377 MM_GetPtr (&grsegs[chunk],expanded);
\r
1380 dest = (spritetype _seg *)grsegs[chunk];
\r
1383 // expand the unshifted shape
\r
1385 CAL_HuffExpand (compressed, &dest->data[0],smallplane*5,grhuffman);
\r
1388 // make the shifts!
\r
1390 switch (spr->shifts)
\r
1395 dest->sourceoffset[i] = shiftstarts[0];
\r
1396 dest->planesize[i] = smallplane;
\r
1397 dest->width[i] = spr->width;
\r
1404 dest->sourceoffset[i] = shiftstarts[0];
\r
1405 dest->planesize[i] = smallplane;
\r
1406 dest->width[i] = spr->width;
\r
1410 dest->sourceoffset[i] = shiftstarts[1];
\r
1411 dest->planesize[i] = bigplane;
\r
1412 dest->width[i] = spr->width+1;
\r
1414 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1415 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1419 dest->sourceoffset[0] = shiftstarts[0];
\r
1420 dest->planesize[0] = smallplane;
\r
1421 dest->width[0] = spr->width;
\r
1423 dest->sourceoffset[1] = shiftstarts[1];
\r
1424 dest->planesize[1] = bigplane;
\r
1425 dest->width[1] = spr->width+1;
\r
1426 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1427 dest->sourceoffset[1],spr->width,spr->height,2,true);
\r
1429 dest->sourceoffset[2] = shiftstarts[2];
\r
1430 dest->planesize[2] = bigplane;
\r
1431 dest->width[2] = spr->width+1;
\r
1432 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1433 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1435 dest->sourceoffset[3] = shiftstarts[3];
\r
1436 dest->planesize[3] = bigplane;
\r
1437 dest->width[3] = spr->width+1;
\r
1438 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1439 dest->sourceoffset[3],spr->width,spr->height,6,true);
\r
1444 Quit ("CAL_CacheSprite: Bad shifts number!");
\r
1450 //===========================================================================
\r
1454 ======================
\r
1456 = CAL_ExpandGrChunk
\r
1458 = Does whatever is needed with a pointer to a compressed chunk
\r
1460 ======================
\r
1463 void CAL_ExpandGrChunk (int chunk, byte far *source)
\r
1468 if (chunk >= STARTTILE8 && chunk < STARTEXTERNS)
\r
1471 // expanded sizes of tile8/16/32 are implicit
\r
1474 #if GRMODE == EGAGR
\r
1476 #define MASKBLOCK 40
\r
1479 #if GRMODE == CGAGR
\r
1481 #define MASKBLOCK 32
\r
1484 if (chunk<STARTTILE8M) // tile 8s are all in one chunk!
\r
1485 expanded = BLOCK*NUMTILE8;
\r
1486 else if (chunk<STARTTILE16)
\r
1487 expanded = MASKBLOCK*NUMTILE8M;
\r
1488 else if (chunk<STARTTILE16M) // all other tiles are one/chunk
\r
1489 expanded = BLOCK*4;
\r
1490 else if (chunk<STARTTILE32)
\r
1491 expanded = MASKBLOCK*4;
\r
1492 else if (chunk<STARTTILE32M)
\r
1493 expanded = BLOCK*16;
\r
1495 expanded = MASKBLOCK*16;
\r
1500 // everything else has an explicit size longword
\r
1502 expanded = *(long far *)source;
\r
1503 source += 4; // skip over length
\r
1507 // allocate final space, decompress it, and free bigbuffer
\r
1508 // Sprites need to have shifts made and various other junk
\r
1510 if (chunk>=STARTSPRITES && chunk< STARTTILE8)
\r
1511 CAL_CacheSprite(chunk,source);
\r
1514 MM_GetPtr (&grsegs[chunk],expanded);
\r
1517 CAL_HuffExpand (source,grsegs[chunk],expanded,grhuffman);
\r
1523 ======================
\r
1527 = Gets a chunk off disk, optimizing reads to general buffer
\r
1529 ======================
\r
1532 void CAL_ReadGrChunk (int chunk)
\r
1534 long pos,compressed;
\r
1535 memptr bigbufferseg;
\r
1540 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1541 // a larger buffer
\r
1543 pos = GRFILEPOS(chunk);
\r
1544 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1548 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1551 compressed = GRFILEPOS(next)-pos;
\r
1553 lseek(grhandle,pos,SEEK_SET);
\r
1555 if (compressed<=BUFFERSIZE)
\r
1557 CA_FarRead(grhandle,bufferseg,compressed);
\r
1558 source = bufferseg;
\r
1562 MM_GetPtr(&bigbufferseg,compressed);
\r
1565 MM_SetLock (&bigbufferseg,true);
\r
1566 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
1567 source = bigbufferseg;
\r
1570 CAL_ExpandGrChunk (chunk,source);
\r
1572 if (compressed>BUFFERSIZE)
\r
1573 MM_FreePtr(&bigbufferseg);
\r
1577 ======================
\r
1581 = Makes sure a given chunk is in memory, loadiing it if needed
\r
1583 ======================
\r
1586 void CA_CacheGrChunk (int chunk)
\r
1588 long pos,compressed;
\r
1589 memptr bigbufferseg;
\r
1593 grneeded[chunk] |= ca_levelbit; // make sure it doesn't get removed
\r
1594 if (grsegs[chunk])
\r
1596 MM_SetPurge (&grsegs[chunk],0);
\r
1597 return; // allready in memory
\r
1600 // MDM begin - (GAMERS EDGE)
\r
1602 if (!FindFile("EGAGRAPH."EXT,NULL,2))
\r
1603 Quit("CA_CacheGrChunk(): Can't find graphics files.");
\r
1608 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1609 // a larger buffer
\r
1611 pos = GRFILEPOS(chunk);
\r
1612 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1616 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1619 compressed = GRFILEPOS(next)-pos;
\r
1621 lseek(grhandle,pos,SEEK_SET);
\r
1623 if (compressed<=BUFFERSIZE)
\r
1625 CA_FarRead(grhandle,bufferseg,compressed);
\r
1626 source = bufferseg;
\r
1630 MM_GetPtr(&bigbufferseg,compressed);
\r
1631 MM_SetLock (&bigbufferseg,true);
\r
1632 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
1633 source = bigbufferseg;
\r
1636 CAL_ExpandGrChunk (chunk,source);
\r
1638 if (compressed>BUFFERSIZE)
\r
1639 MM_FreePtr(&bigbufferseg);
\r
1644 //==========================================================================
\r
1647 ======================
\r
1651 ======================
\r
1654 void CA_CacheMap (int mapnum)
\r
1656 long pos,compressed;
\r
1658 memptr *dest,bigbufferseg;
\r
1660 unsigned far *source;
\r
1661 #ifdef MAPHEADERLINKED
\r
1662 memptr buffer2seg;
\r
1667 // MDM begin - (GAMERS EDGE)
\r
1669 if (!FindFile("GAMEMAPS."EXT,NULL,1))
\r
1670 Quit("CA_CacheMap(): Can't find level files.");
\r
1676 // free up memory from last map
\r
1678 if (mapon>-1 && mapheaderseg[mapon])
\r
1679 MM_SetPurge (&(memptr)mapheaderseg[mapon],3);
\r
1680 for (plane=0;plane<MAPPLANES;plane++)
\r
1681 if (mapsegs[plane])
\r
1682 MM_FreePtr (&(memptr)mapsegs[plane]);
\r
1688 // load map header
\r
1689 // The header will be cached if it is still around
\r
1691 if (!mapheaderseg[mapnum])
\r
1693 pos = ((mapfiletype _seg *)tinf)->headeroffsets[mapnum];
\r
1694 if (pos<0) // $FFFFFFFF start is a sparse map
\r
1695 Quit ("CA_CacheMap: Tried to load a non existent map!");
\r
1697 MM_GetPtr(&(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1698 lseek(maphandle,pos,SEEK_SET);
\r
1699 CA_FarRead (maphandle,(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1702 MM_SetPurge (&(memptr)mapheaderseg[mapnum],0);
\r
1705 // load the planes in
\r
1706 // If a plane's pointer still exists it will be overwritten (levels are
\r
1707 // allways reloaded, never cached)
\r
1710 size = mapheaderseg[mapnum]->width * mapheaderseg[mapnum]->height * 2;
\r
1712 for (plane = 0; plane<MAPPLANES; plane++)
\r
1714 pos = mapheaderseg[mapnum]->planestart[plane];
\r
1715 compressed = mapheaderseg[mapnum]->planelength[plane];
\r
1718 continue; // the plane is not used in this game
\r
1720 dest = &(memptr)mapsegs[plane];
\r
1721 MM_GetPtr(dest,size);
\r
1723 lseek(maphandle,pos,SEEK_SET);
\r
1724 if (compressed<=BUFFERSIZE)
\r
1725 source = bufferseg;
\r
1728 MM_GetPtr(&bigbufferseg,compressed);
\r
1729 MM_SetLock (&bigbufferseg,true);
\r
1730 source = bigbufferseg;
\r
1733 CA_FarRead(maphandle,(byte far *)source,compressed);
\r
1734 #ifdef MAPHEADERLINKED
\r
1736 // unhuffman, then unRLEW
\r
1737 // The huffman'd chunk has a two byte expanded length first
\r
1738 // The resulting RLEW chunk also does, even though it's not really
\r
1741 expanded = *source;
\r
1743 MM_GetPtr (&buffer2seg,expanded);
\r
1744 CAL_CarmackExpand (source, (unsigned far *)buffer2seg,expanded);
\r
1745 CA_RLEWexpand (((unsigned far *)buffer2seg)+1,*dest,size,
\r
1746 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
1747 MM_FreePtr (&buffer2seg);
\r
1751 // unRLEW, skipping expanded length
\r
1753 CA_RLEWexpand (source+1, *dest,size,
\r
1754 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
1757 if (compressed>BUFFERSIZE)
\r
1758 MM_FreePtr(&bigbufferseg);
\r
1762 //===========================================================================
\r
1765 ======================
\r
1769 = Goes up a bit level in the needed lists and clears it out.
\r
1770 = Everything is made purgable
\r
1772 ======================
\r
1775 void CA_UpLevel (void)
\r
1777 if (ca_levelnum==7)
\r
1778 Quit ("CA_UpLevel: Up past level 7!");
\r
1784 //===========================================================================
\r
1787 ======================
\r
1791 = Goes down a bit level in the needed lists and recaches
\r
1792 = everything from the lower level
\r
1794 ======================
\r
1797 void CA_DownLevel (void)
\r
1800 Quit ("CA_DownLevel: Down past level 0!");
\r
1803 CA_CacheMarks(NULL);
\r
1806 //===========================================================================
\r
1809 ======================
\r
1813 = Clears out all the marks at the current level
\r
1815 ======================
\r
1818 void CA_ClearMarks (void)
\r
1822 for (i=0;i<NUMCHUNKS;i++)
\r
1823 grneeded[i]&=~ca_levelbit;
\r
1827 //===========================================================================
\r
1830 ======================
\r
1832 = CA_ClearAllMarks
\r
1834 = Clears out all the marks on all the levels
\r
1836 ======================
\r
1839 void CA_ClearAllMarks (void)
\r
1841 _fmemset (grneeded,0,sizeof(grneeded));
\r
1847 //===========================================================================
\r
1850 ======================
\r
1854 ======================
\r
1857 void CA_FreeGraphics (void)
\r
1861 for (i=0;i<NUMCHUNKS;i++)
\r
1863 MM_SetPurge (&(memptr)grsegs[i],3);
\r
1868 ======================
\r
1872 = Make everything possible purgable
\r
1874 ======================
\r
1877 void CA_SetAllPurge (void)
\r
1884 // free cursor sprite and background save
\r
1889 // free map headers and map planes
\r
1891 for (i=0;i<NUMMAPS;i++)
\r
1892 if (mapheaderseg[i])
\r
1893 MM_SetPurge (&(memptr)mapheaderseg[i],3);
\r
1897 MM_FreePtr (&(memptr)mapsegs[i]);
\r
1902 for (i=0;i<NUMSNDCHUNKS;i++)
\r
1904 MM_SetPurge (&(memptr)audiosegs[i],3);
\r
1909 CA_FreeGraphics ();
\r
1913 void CA_SetGrPurge (void)
\r
1920 for (i=0;i<NUMCHUNKS;i++)
\r
1922 MM_SetPurge (&(memptr)grsegs[i],3);
\r
1926 //===========================================================================
\r
1930 ======================
\r
1934 ======================
\r
1937 #define NUMBARS (17l*8)
\r
1940 unsigned thx,thy,lastx;
\r
1941 long barx,barstep;
\r
1943 void CAL_DialogDraw (char *title,unsigned numcache)
\r
1945 unsigned homex,homey,x;
\r
1947 barstep = (NUMBARS<<16)/numcache;
\r
1950 // draw dialog window (masked tiles 12 - 20 are window borders)
\r
1952 US_CenterWindow (20,8);
\r
1956 US_CPrint ("Loading");
\r
1957 fontcolor = F_SECONDCOLOR;
\r
1958 US_CPrint (title);
\r
1959 fontcolor = F_BLACK;
\r
1962 // draw thermometer bar
\r
1966 VWB_DrawTile8(thx,thy,0); // CAT3D numbers
\r
1967 VWB_DrawTile8(thx,thy+8,3);
\r
1968 VWB_DrawTile8(thx,thy+16,6);
\r
1969 VWB_DrawTile8(thx+17*8,thy,2);
\r
1970 VWB_DrawTile8(thx+17*8,thy+8,5);
\r
1971 VWB_DrawTile8(thx+17*8,thy+16,8);
\r
1972 for (x=thx+8;x<thx+17*8;x+=8)
\r
1974 VWB_DrawTile8(x,thy,1);
\r
1975 VWB_DrawTile8(x,thy+8,4);
\r
1976 VWB_DrawTile8(x,thy+16,7);
\r
1979 thx += 4; // first line location
\r
1981 barx = (long)thx<<16;
\r
1984 VW_UpdateScreen();
\r
1989 ======================
\r
1991 = CAL_DialogUpdate
\r
1993 ======================
\r
1996 void CAL_DialogUpdate (void)
\r
2002 if (xh - lastx > BARSTEP)
\r
2004 for (x=lastx;x<=xh;x++)
\r
2005 #if GRMODE == EGAGR
\r
2006 VWB_Vlin (thy,thy+13,x,14);
\r
2008 #if GRMODE == CGAGR
\r
2009 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2012 VW_UpdateScreen();
\r
2017 ======================
\r
2019 = CAL_DialogFinish
\r
2021 ======================
\r
2024 void CAL_DialogFinish (void)
\r
2028 xh = thx + NUMBARS;
\r
2029 for (x=lastx;x<=xh;x++)
\r
2030 #if GRMODE == EGAGR
\r
2031 VWB_Vlin (thy,thy+13,x,14);
\r
2033 #if GRMODE == CGAGR
\r
2034 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2036 VW_UpdateScreen();
\r
2040 //===========================================================================
\r
2043 ======================
\r
2047 ======================
\r
2049 #define MAXEMPTYREAD 1024
\r
2051 void CA_CacheMarks (char *title)
\r
2054 int i,next,numcache;
\r
2055 long pos,endpos,nextpos,nextendpos,compressed;
\r
2056 long bufferstart,bufferend; // file position of general buffer
\r
2058 memptr bigbufferseg;
\r
2060 dialog = (title!=NULL);
\r
2064 // go through and make everything not needed purgable
\r
2066 for (i=0;i<NUMCHUNKS;i++)
\r
2067 if (grneeded[i]&ca_levelbit)
\r
2069 if (grsegs[i]) // its allready in memory, make
\r
2070 MM_SetPurge(&grsegs[i],0); // sure it stays there!
\r
2076 if (grsegs[i]) // not needed, so make it purgeable
\r
2077 MM_SetPurge(&grsegs[i],3);
\r
2080 if (!numcache) // nothing to cache!
\r
2083 // MDM begin - (GAMERS EDGE)
\r
2085 if (!FindFile("EGAGRAPH."EXT,NULL,2))
\r
2086 Quit("CA_CacheMarks(): Can't find graphics files.");
\r
2093 write(profilehandle,title,strlen(title));
\r
2094 write(profilehandle,"\n",1);
\r
2097 drawcachebox(title,numcache);
\r
2101 // go through and load in anything still needed
\r
2103 bufferstart = bufferend = 0; // nothing good in buffer now
\r
2105 for (i=0;i<NUMCHUNKS;i++)
\r
2106 if ( (grneeded[i]&ca_levelbit) && !grsegs[i])
\r
2109 // update thermometer
\r
2111 if (dialog && updatecachebox)
\r
2112 updatecachebox ();
\r
2114 pos = GRFILEPOS(i);
\r
2119 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
2122 compressed = GRFILEPOS(next)-pos;
\r
2123 endpos = pos+compressed;
\r
2125 if (compressed<=BUFFERSIZE)
\r
2127 if (bufferstart<=pos
\r
2128 && bufferend>= endpos)
\r
2130 // data is allready in buffer
\r
2131 source = (byte _seg *)bufferseg+(pos-bufferstart);
\r
2135 // load buffer with a new block from disk
\r
2136 // try to get as many of the needed blocks in as possible
\r
2137 while ( next < NUMCHUNKS )
\r
2139 while (next < NUMCHUNKS &&
\r
2140 !(grneeded[next]&ca_levelbit && !grsegs[next]))
\r
2142 if (next == NUMCHUNKS)
\r
2145 nextpos = GRFILEPOS(next);
\r
2146 while (GRFILEPOS(++next) == -1) // skip past any sparse tiles
\r
2148 nextendpos = GRFILEPOS(next);
\r
2149 if (nextpos - endpos <= MAXEMPTYREAD
\r
2150 && nextendpos-pos <= BUFFERSIZE)
\r
2151 endpos = nextendpos;
\r
2153 next = NUMCHUNKS; // read pos to posend
\r
2156 lseek(grhandle,pos,SEEK_SET);
\r
2157 CA_FarRead(grhandle,bufferseg,endpos-pos);
\r
2158 bufferstart = pos;
\r
2159 bufferend = endpos;
\r
2160 source = bufferseg;
\r
2165 // big chunk, allocate temporary buffer
\r
2166 MM_GetPtr(&bigbufferseg,compressed);
\r
2169 MM_SetLock (&bigbufferseg,true);
\r
2170 lseek(grhandle,pos,SEEK_SET);
\r
2171 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
2172 source = bigbufferseg;
\r
2175 CAL_ExpandGrChunk (i,source);
\r
2179 if (compressed>BUFFERSIZE)
\r
2180 MM_FreePtr(&bigbufferseg);
\r
2185 // finish up any thermometer remnants
\r
2187 if (dialog && finishcachebox)
\r