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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177 void CA_OpenDebug(void)
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179 unlink("DEBUG.TXT");
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180 debughandle = open("DEBUG.TXT", O_CREAT | O_WRONLY | O_TEXT);
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183 void CA_CloseDebug(void)
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185 close debughandle);
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191 ============================
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193 = CAL_GetGrChunkLength
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195 = Gets the length of an explicit length chunk (not tiles)
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196 = The file pointer is positioned so the compressed data can be read in next.
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198 ============================
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201 void CAL_GetGrChunkLength (int chunk)
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203 lseek(grhandle,GRFILEPOS(chunk),SEEK_SET);
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204 read(grhandle,&chunkexplen,sizeof(chunkexplen));
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205 chunkcomplen = GRFILEPOS(chunk+1)-GRFILEPOS(chunk)-4;
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210 ==========================
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214 = Read from a file to a far pointer
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216 ==========================
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219 boolean CA_FarRead(int handle, byte huge *dest, dword length, mminfo_t *mm)
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224 //if(mm->EMSVer<0x40)
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228 segm=(length%0xfffflu)-1;
231 // printf("CA_FarRead doesn't support 64K reads yet!\n");
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240 mov cx,[WORD PTR length]
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241 mov dx,[WORD PTR dest]
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242 mov ds,[WORD PTR dest+2]
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243 mov ah,0x3f // READ w/handle
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251 cmp ax,[WORD PTR length]
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253 // errno = EINVFMT; // user manager knows this is bad read
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261 }else return 0;//todo: EXPAND!!!
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266 ==========================
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270 = Write from a file to a far pointer
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272 ==========================
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275 boolean CA_FarWrite(int handle, byte huge *source, dword length, mminfo_t *mm)
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280 //if(mm->EMSVer<0x40)
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284 segm=(length%0xfffflu)-1;
287 // printf("CA_FarRead doesn't support 64K reads yet!\n");
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296 mov cx,[WORD PTR length]
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297 mov dx,[WORD PTR source]
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298 mov ds,[WORD PTR source+2]
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299 mov ah,0x40 // WRITE w/handle
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307 cmp ax,[WORD PTR length]
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309 //errno = ENOMEM; // user manager knows this is bad write
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322 ==========================
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326 = Reads a file into an allready allocated buffer
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328 ==========================
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331 boolean CA_ReadFile(char *filename, memptr *ptr, mminfo_t *mm)
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336 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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339 size = filelength(handle);
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340 if(!CA_FarRead(handle,*ptr,size, mm))
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352 ==========================
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356 = Allocate space for and load a file
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358 ==========================
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361 boolean CA_LoadFile(char *filename, memptr *ptr, mminfo_t *mm, mminfotype *mmi)
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366 if((handle = open(filename,O_RDONLY | O_BINARY, S_IREAD)) == -1)
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369 size = filelength (handle);
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370 MM_GetPtr(ptr,size, mm, mmi);
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371 if(!CA_FarRead(handle,*ptr,size, mm))
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381 ============================================================================
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383 COMPRESSION routines, see JHUFF.C for more
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385 ============================================================================
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393 = CAL_OptimizeNodes
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395 = Goes through a huffman table and changes the 256-511 node numbers to the
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396 = actular address of the node. Must be called before CAL_HuffExpand
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401 void CAL_OptimizeNodes(huffnode *table)
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408 for (i=0;i<255;i++)
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410 if (node->bit0 >= 256)
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411 node->bit0 = (unsigned)(table+(node->bit0-256));
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412 if (node->bit1 >= 256)
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413 node->bit1 = (unsigned)(table+(node->bit1-256));
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421 ======================
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425 = Length is the length of the EXPANDED data
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427 ======================
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430 /*++++void CAL_HuffExpand (byte huge *source, byte huge *dest,
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431 long length,huffnode *hufftable)
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433 // unsigned bit,byte,node,code;
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434 unsigned sourceseg,sourceoff,destseg,destoff,endoff;
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436 // huffnode *nodeon;
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438 headptr = hufftable+254; // head node is allways node 254
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440 source++; // normalize
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445 sourceseg = FP_SEG(source);
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446 sourceoff = FP_OFF(source);
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447 destseg = FP_SEG(dest);
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448 destoff = FP_OFF(dest);
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449 endoff = destoff+length;
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454 // ss:bx node pointer
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457 if (length <0xfff0)
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460 //--------------------------
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461 // expand less than 64k of data
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462 //--------------------------
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474 mov ch,[si] // load first byte
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479 test ch,cl // bit set?
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481 mov dx,[ss:bx] // take bit0 path from node
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482 shl cl,1 // advance to next bit position
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487 asm mov dx,[ss:bx+2] // take bit1 path
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488 asm shl cl,1 // advance to next bit position
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489 asm jnc sourceupshort
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492 asm mov ch,[si] // load next byte
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494 asm mov cl,1 // back to first bit
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497 asm or dh,dh // if dx<256 its a byte, else move node
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498 asm jz storebyteshort
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499 asm mov bx,dx // next node = (huffnode *)code
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500 asm jmp expandshort
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504 asm inc di // write a decopmpressed byte out
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505 asm mov bx,[headptr] // back to the head node for next bit
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507 asm cmp di,ax // done?
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508 asm jne expandshort
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514 //--------------------------
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515 // expand more than 64k of data
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516 //--------------------------
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522 asm mov bx,[headptr]
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525 asm mov si,[sourceoff]
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526 asm mov di,[destoff]
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527 asm mov es,[destseg]
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528 asm mov ds,[sourceseg]
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530 asm lodsb // load first byte
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533 asm test al,cl // bit set?
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535 asm mov dx,[ss:bx] // take bit0 path from node
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538 asm mov dx,[ss:bx+2] // take bit1 path
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541 asm shl cl,1 // advance to next bit position
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544 asm cmp si,0x10 // normalize ds:si
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551 asm mov cl,1 // back to first bit
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554 asm or dh,dh // if dx<256 its a byte, else move node
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556 asm mov bx,dx // next node = (huffnode *)code
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561 asm inc di // write a decopmpressed byte out
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562 asm mov bx,[headptr] // back to the head node for next bit
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564 asm cmp di,0x10 // normalize es:di
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572 asm sub [WORD PTR ss:length],1
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574 asm dec [WORD PTR ss:length+2]
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575 asm jns expand // when length = ffff ffff, done
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589 ======================
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591 = CAL_CarmackExpand
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593 = Length is the length of the EXPANDED data
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595 ======================
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598 #define NEARTAG 0xa7
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599 #define FARTAG 0xa8
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601 void CAL_CarmackExpand (unsigned far *source, unsigned far *dest, unsigned length)
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603 unsigned ch,chhigh,count,offset;
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604 unsigned far *copyptr, far *inptr, far *outptr;
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615 if (chhigh == NEARTAG)
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619 { // have to insert a word containing the tag byte
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620 ch |= *((unsigned char far *)inptr)++;
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626 offset = *((unsigned char far *)inptr)++;
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627 copyptr = outptr - offset;
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630 *outptr++ = *copyptr++;
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633 else if (chhigh == FARTAG)
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637 { // have to insert a word containing the tag byte
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638 ch |= *((unsigned char far *)inptr)++;
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645 copyptr = dest + offset;
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648 *outptr++ = *copyptr++;
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662 ======================
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666 ======================
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669 long CA_RLEWCompress (unsigned huge *source, long length, unsigned huge *dest,
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673 unsigned value,count,i;
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674 unsigned huge *start,huge *end;
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678 end = source + (length+1)/2;
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687 while (*source == value && source<end)
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692 if (count>3 || value == rlewtag)
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695 // send a tag / count / value string
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704 // send word without compressing
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706 for (i=1;i<=count;i++)
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710 } while (source<end);
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712 complength = 2*(dest-start);
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718 ======================
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721 = length is EXPANDED length
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723 ======================
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726 void CA_RLEWexpand (unsigned huge *source, unsigned huge *dest,long length,
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729 // unsigned value,count,i;
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730 unsigned huge *end;
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731 unsigned sourceseg,sourceoff,destseg,destoff,endseg,endoff;
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741 if (value != rlewtag)
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749 // compressed string
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753 for (i=1;i<=count;i++)
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756 } while (dest<end);
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759 end = dest + (length)/2;
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760 sourceseg = FP_SEG(source);
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761 sourceoff = FP_OFF(source);
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762 destseg = FP_SEG(dest);
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763 destoff = FP_OFF(dest);
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764 endseg = FP_SEG(end);
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765 endoff = FP_OFF(end);
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769 // ax = source value
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771 // cx = repeat counts
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774 // NOTE: A repeat count that produces 0xfff0 bytes can blow this!
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778 asm mov si,sourceoff
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781 asm mov ds,sourceseg
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792 asm mov cx,ax // repeat count
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793 asm lodsw // repeat value
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798 asm cmp si,0x10 // normalize ds:si
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810 asm cmp di,0x10 // normalize es:di
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823 asm cmp di,ss:endoff
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826 asm cmp ax,ss:endseg
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837 =============================================================================
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839 CACHE MANAGER ROUTINES
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841 =============================================================================
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845 ======================
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849 ======================
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852 /*void CAL_SetupGrFile (void)
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857 #ifdef GRHEADERLINKED
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859 #if GRMODE == EGAGR
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860 grhuffman = (huffnode *)&EGAdict;
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861 grstarts = (long _seg *)FP_SEG(&EGAhead);
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863 #if GRMODE == CGAGR
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864 grhuffman = (huffnode *)&CGAdict;
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865 grstarts = (long _seg *)FP_SEG(&CGAhead);
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868 CAL_OptimizeNodes (grhuffman);
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873 // load ???dict.ext (huffman dictionary for graphics files)
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876 if ((handle = open(GREXT"DICT."EXT,
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877 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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878 Quit ("Can't open "GREXT"DICT."EXT"!");
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880 read(handle, &grhuffman, sizeof(grhuffman));
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882 CAL_OptimizeNodes (grhuffman);
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884 // load the data offsets from ???head.ext
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886 MM_GetPtr (&(memptr)grstarts,(NUMCHUNKS+1)*FILEPOSSIZE);
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888 if ((handle = open(GREXT"HEAD."EXT,
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889 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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890 Quit ("Can't open "GREXT"HEAD."EXT"!");
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892 CA_FarRead(handle, (memptr)grstarts, (NUMCHUNKS+1)*FILEPOSSIZE);
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900 // Open the graphics file, leaving it open until the game is finished
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902 grhandle = open(GREXT"GRAPH."EXT, O_RDONLY | O_BINARY);
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903 if (grhandle == -1)
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904 Quit ("Cannot open "GREXT"GRAPH."EXT"!");
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908 // load the pic and sprite headers into the arrays in the data segment
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911 MM_GetPtr(&(memptr)pictable,NUMPICS*sizeof(pictabletype));
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912 CAL_GetGrChunkLength(STRUCTPIC); // position file pointer
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913 MM_GetPtr(&compseg,chunkcomplen);
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914 CA_FarRead (grhandle,compseg,chunkcomplen);
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915 CAL_HuffExpand (compseg, (byte huge *)pictable,NUMPICS*sizeof(pictabletype),grhuffman);
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916 MM_FreePtr(&compseg);
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920 MM_GetPtr(&(memptr)picmtable,NUMPICM*sizeof(pictabletype));
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921 CAL_GetGrChunkLength(STRUCTPICM); // position file pointer
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922 MM_GetPtr(&compseg,chunkcomplen);
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923 CA_FarRead (grhandle,compseg,chunkcomplen);
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924 CAL_HuffExpand (compseg, (byte huge *)picmtable,NUMPICS*sizeof(pictabletype),grhuffman);
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925 MM_FreePtr(&compseg);
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929 MM_GetPtr(&(memptr)spritetable,NUMSPRITES*sizeof(spritetabletype));
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930 CAL_GetGrChunkLength(STRUCTSPRITE); // position file pointer
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931 MM_GetPtr(&compseg,chunkcomplen);
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932 CA_FarRead (grhandle,compseg,chunkcomplen);
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933 CAL_HuffExpand (compseg, (byte huge *)spritetable,NUMSPRITES*sizeof(spritetabletype),grhuffman);
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934 MM_FreePtr(&compseg);
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939 //==========================================================================
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943 ======================
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947 ======================
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950 /*void CAL_SetupMapFile (void)
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956 // load maphead.ext (offsets and tileinfo for map file)
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958 #ifndef MAPHEADERLINKED
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959 if ((handle = open("MAPHEAD."EXT,
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960 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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961 Quit ("Can't open MAPHEAD."EXT"!");
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962 length = filelength(handle);
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963 MM_GetPtr (&(memptr)tinf,length);
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964 CA_FarRead(handle, tinf, length);
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968 tinf = (byte _seg *)FP_SEG(&maphead);
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973 // open the data file
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975 #ifdef MAPHEADERLINKED
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976 if ((maphandle = open("GAMEMAPS."EXT,
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977 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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978 Quit ("Can't open GAMEMAPS."EXT"!");
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980 if ((maphandle = open("MAPTEMP."EXT,
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981 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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982 Quit ("Can't open MAPTEMP."EXT"!");
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986 //==========================================================================
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990 ======================
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992 = CAL_SetupAudioFile
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994 ======================
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997 /*void CAL_SetupAudioFile (void)
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1003 // load maphead.ext (offsets and tileinfo for map file)
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1005 #ifndef AUDIOHEADERLINKED
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1006 if ((handle = open("AUDIOHED."EXT,
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1007 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1008 Quit ("Can't open AUDIOHED."EXT"!");
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1009 length = filelength(handle);
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1010 MM_GetPtr (&(memptr)audiostarts,length);
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1011 CA_FarRead(handle, (byte far *)audiostarts, length);
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1014 audiohuffman = (huffnode *)&audiodict;
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1015 CAL_OptimizeNodes (audiohuffman);
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1016 audiostarts = (long _seg *)FP_SEG(&audiohead);
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1020 // open the data file
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1022 #ifndef AUDIOHEADERLINKED
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1023 if ((audiohandle = open("AUDIOT."EXT,
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1024 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1025 Quit ("Can't open AUDIOT."EXT"!");
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1027 if ((audiohandle = open("AUDIO."EXT,
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1028 O_RDONLY | O_BINARY, S_IREAD)) == -1)
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1029 Quit ("Can't open AUDIO."EXT"!");
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1033 //==========================================================================
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1037 ======================
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1041 = Open all files and load in headers
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1043 ======================
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1046 void CA_Startup(void)
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1049 unlink("PROFILE.TXT");
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1050 profilehandle = open("PROFILE.TXT", O_CREAT | O_WRONLY | O_TEXT);
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1053 // MDM begin - (GAMERS EDGE)
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1055 if(!FindFile("AUDIO."EXT,NULL,2))
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1056 Quit("CA_Startup(): Can't find audio files.");
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1061 CAL_SetupAudioFile();
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1064 // MDM begin - (GAMERS EDGE)
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1066 if (!FindFile("GAMEMAPS."EXT,NULL,1))
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1067 Quit("CA_Startup(): Can't find level files.");
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1072 CAL_SetupMapFile ();
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1075 // MDM begin - (GAMERS EDGE)
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1077 if (!FindFile("EGAGRAPH."EXT,NULL,2))
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1078 Quit("CA_Startup(): Can't find graphics files.");
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1082 #ifndef NOGRAPHICS
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1083 CAL_SetupGrFile ();
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1090 drawcachebox = CAL_DialogDraw;
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1091 updatecachebox = CAL_DialogUpdate;
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1092 finishcachebox = CAL_DialogFinish;*/
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1095 //==========================================================================
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1099 ======================
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1103 = Closes all files
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1105 ======================
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1108 void CA_Shutdown(void)
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1111 close(profilehandle);
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1116 close(audiohandle);*/
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1119 //===========================================================================
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1122 ======================
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1124 = CA_CacheAudioChunk
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1126 ======================
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1129 void CA_CacheAudioChunk (int chunk)
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1131 long pos,compressed;
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1132 #ifdef AUDIOHEADERLINKED
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1134 memptr bigbufferseg;
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1138 if (audiosegs[chunk])
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1140 MM_SetPurge (&(memptr)audiosegs[chunk],0);
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1141 return; // allready in memory
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1144 // MDM begin - (GAMERS EDGE)
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1146 if (!FindFile("AUDIO."EXT,NULL,2))
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1147 Quit("CA_CacheAudioChunk(): Can't find audio files.");
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1152 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
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1153 // a larger buffer
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1155 pos = audiostarts[chunk];
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1156 compressed = audiostarts[chunk+1]-pos;
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1158 lseek(audiohandle,pos,SEEK_SET);
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1160 #ifndef AUDIOHEADERLINKED
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1162 MM_GetPtr (&(memptr)audiosegs[chunk],compressed);
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1166 CA_FarRead(audiohandle,audiosegs[chunk],compressed);
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1170 if (compressed<=BUFFERSIZE)
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1172 CA_FarRead(audiohandle,bufferseg,compressed);
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1173 source = bufferseg;
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1177 MM_GetPtr(&bigbufferseg,compressed);
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1180 MM_SetLock (&bigbufferseg,true);
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1181 CA_FarRead(audiohandle,bigbufferseg,compressed);
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1182 source = bigbufferseg;
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1185 expanded = *(long far *)source;
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1186 source += 4; // skip over length
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1187 MM_GetPtr (&(memptr)audiosegs[chunk],expanded);
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1190 CAL_HuffExpand (source,audiosegs[chunk],expanded,audiohuffman);
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1193 if (compressed>BUFFERSIZE)
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1194 MM_FreePtr(&bigbufferseg);
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1198 //===========================================================================
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1201 ======================
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1203 = CA_LoadAllSounds
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1205 = Purges all sounds, then loads all new ones (mode switch)
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1207 ======================
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1210 void CA_LoadAllSounds (void)
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1214 switch (oldsoundmode)
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1219 start = STARTPCSOUNDS;
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1222 start = STARTADLIBSOUNDS;
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1226 for (i=0;i<NUMSOUNDS;i++,start++)
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1227 if (audiosegs[start])
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1228 MM_SetPurge (&(memptr)audiosegs[start],3); // make purgable
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1232 switch (SoundMode)
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1237 start = STARTPCSOUNDS;
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1240 start = STARTADLIBSOUNDS;
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1244 for (i=0;i<NUMSOUNDS;i++,start++)
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1245 CA_CacheAudioChunk (start);
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1247 oldsoundmode = SoundMode;
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1250 //===========================================================================
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1252 //++++#if GRMODE == EGAGR
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1255 ======================
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1259 = Make a shifted (one byte wider) copy of a sprite into another area
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1261 ======================
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1264 unsigned static sheight,swidth;
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1265 boolean static dothemask;
\r
1267 void CAL_ShiftSprite (unsigned segment,unsigned source,unsigned dest,
\r
1268 unsigned width, unsigned height, unsigned pixshift, boolean domask)
\r
1271 sheight = height; // because we are going to reassign bp
\r
1273 dothemask = domask;
\r
1275 asm mov ax,[segment]
\r
1276 asm mov ds,ax // source and dest are in same segment, and all local
\r
1278 asm mov bx,[source]
\r
1281 asm mov bp,[pixshift]
\r
1283 asm mov bp,WORD PTR [shifttabletable+bp] // bp holds pointer to shift table
\r
1285 asm cmp [ss:dothemask],0
\r
1289 // table shift the mask
\r
1291 asm mov dx,[ss:sheight]
\r
1295 asm mov BYTE PTR [di],255 // 0xff first byte
\r
1296 asm mov cx,ss:[swidth]
\r
1300 asm mov al,[bx] // source
\r
1302 asm inc bx // next source byte
\r
1306 asm mov ax,[bp+si] // table shift into two bytes
\r
1308 asm and [di],al // and with first byte
\r
1310 asm mov [di],ah // replace next byte
\r
1312 asm loop domaskbyte
\r
1314 asm inc di // the last shifted byte has 1s in it
\r
1321 // table shift the data
\r
1323 asm mov dx,ss:[sheight]
\r
1325 asm shl dx,1 // four planes of data
\r
1329 asm mov BYTE PTR [di],0 // 0 first byte
\r
1330 asm mov cx,ss:[swidth]
\r
1334 asm mov al,[bx] // source
\r
1335 asm inc bx // next source byte
\r
1339 asm mov ax,[bp+si] // table shift into two bytes
\r
1340 asm or [di],al // or with first byte
\r
1342 asm mov [di],ah // replace next byte
\r
1344 asm loop dodatabyte
\r
1346 asm inc di // the last shifted byte has 0s in it
\r
1354 asm mov ax,ss // restore data segment
\r
1361 //===========================================================================
\r
1364 ======================
\r
1368 = Generate shifts and set up sprite structure for a given sprite
\r
1370 ======================
\r
1373 void CAL_CacheSprite (int chunk, byte far *compressed)
\r
1376 unsigned shiftstarts[5];
\r
1377 unsigned smallplane,bigplane,expanded;
\r
1378 spritetabletype far *spr;
\r
1379 spritetype _seg *dest;
\r
1381 #if GRMODE == CGAGR
\r
1383 // CGA has no pel panning, so shifts are never needed
\r
1385 spr = &spritetable[chunk-STARTSPRITES];
\r
1386 smallplane = spr->width*spr->height;
\r
1387 MM_GetPtr (&grsegs[chunk],smallplane*2+MAXSHIFTS*6);
\r
1390 dest = (spritetype _seg *)grsegs[chunk];
\r
1391 dest->sourceoffset[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1392 dest->planesize[0] = smallplane;
\r
1393 dest->width[0] = spr->width;
\r
1396 // expand the unshifted shape
\r
1398 CAL_HuffExpand (compressed, &dest->data[0],smallplane*2,grhuffman);
\r
1403 #if GRMODE == EGAGR
\r
1406 // calculate sizes
\r
1408 spr = &spritetable[chunk-STARTSPRITES];
\r
1409 smallplane = spr->width*spr->height;
\r
1410 bigplane = (spr->width+1)*spr->height;
\r
1412 shiftstarts[0] = MAXSHIFTS*6; // start data after 3 unsigned tables
\r
1413 shiftstarts[1] = shiftstarts[0] + smallplane*5; // 5 planes in a sprite
\r
1414 shiftstarts[2] = shiftstarts[1] + bigplane*5;
\r
1415 shiftstarts[3] = shiftstarts[2] + bigplane*5;
\r
1416 shiftstarts[4] = shiftstarts[3] + bigplane*5; // nothing ever put here
\r
1418 expanded = shiftstarts[spr->shifts];
\r
1419 MM_GetPtr (&grsegs[chunk],expanded);
\r
1422 dest = (spritetype _seg *)grsegs[chunk];
\r
1425 // expand the unshifted shape
\r
1427 CAL_HuffExpand (compressed, &dest->data[0],smallplane*5,grhuffman);
\r
1430 // make the shifts!
\r
1432 switch (spr->shifts)
\r
1437 dest->sourceoffset[i] = shiftstarts[0];
\r
1438 dest->planesize[i] = smallplane;
\r
1439 dest->width[i] = spr->width;
\r
1446 dest->sourceoffset[i] = shiftstarts[0];
\r
1447 dest->planesize[i] = smallplane;
\r
1448 dest->width[i] = spr->width;
\r
1452 dest->sourceoffset[i] = shiftstarts[1];
\r
1453 dest->planesize[i] = bigplane;
\r
1454 dest->width[i] = spr->width+1;
\r
1456 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1457 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1461 dest->sourceoffset[0] = shiftstarts[0];
\r
1462 dest->planesize[0] = smallplane;
\r
1463 dest->width[0] = spr->width;
\r
1465 dest->sourceoffset[1] = shiftstarts[1];
\r
1466 dest->planesize[1] = bigplane;
\r
1467 dest->width[1] = spr->width+1;
\r
1468 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1469 dest->sourceoffset[1],spr->width,spr->height,2,true);
\r
1471 dest->sourceoffset[2] = shiftstarts[2];
\r
1472 dest->planesize[2] = bigplane;
\r
1473 dest->width[2] = spr->width+1;
\r
1474 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1475 dest->sourceoffset[2],spr->width,spr->height,4,true);
\r
1477 dest->sourceoffset[3] = shiftstarts[3];
\r
1478 dest->planesize[3] = bigplane;
\r
1479 dest->width[3] = spr->width+1;
\r
1480 CAL_ShiftSprite ((unsigned)grsegs[chunk],dest->sourceoffset[0],
\r
1481 dest->sourceoffset[3],spr->width,spr->height,6,true);
\r
1486 Quit ("CAL_CacheSprite: Bad shifts number!");
\r
1492 //===========================================================================
\r
1496 ======================
\r
1498 = CAL_ExpandGrChunk
\r
1500 = Does whatever is needed with a pointer to a compressed chunk
\r
1502 ======================
\r
1505 void CAL_ExpandGrChunk (int chunk, byte far *source)
\r
1510 if (chunk >= STARTTILE8 && chunk < STARTEXTERNS)
\r
1513 // expanded sizes of tile8/16/32 are implicit
\r
1516 #if GRMODE == EGAGR
\r
1518 #define MASKBLOCK 40
\r
1521 #if GRMODE == CGAGR
\r
1523 #define MASKBLOCK 32
\r
1526 if (chunk<STARTTILE8M) // tile 8s are all in one chunk!
\r
1527 expanded = BLOCK*NUMTILE8;
\r
1528 else if (chunk<STARTTILE16)
\r
1529 expanded = MASKBLOCK*NUMTILE8M;
\r
1530 else if (chunk<STARTTILE16M) // all other tiles are one/chunk
\r
1531 expanded = BLOCK*4;
\r
1532 else if (chunk<STARTTILE32)
\r
1533 expanded = MASKBLOCK*4;
\r
1534 else if (chunk<STARTTILE32M)
\r
1535 expanded = BLOCK*16;
\r
1537 expanded = MASKBLOCK*16;
\r
1542 // everything else has an explicit size longword
\r
1544 expanded = *(long far *)source;
\r
1545 source += 4; // skip over length
\r
1549 // allocate final space, decompress it, and free bigbuffer
\r
1550 // Sprites need to have shifts made and various other junk
\r
1552 if (chunk>=STARTSPRITES && chunk< STARTTILE8)
\r
1553 CAL_CacheSprite(chunk,source);
\r
1556 MM_GetPtr (&grsegs[chunk],expanded);
\r
1559 CAL_HuffExpand (source,grsegs[chunk],expanded,grhuffman);
\r
1565 ======================
\r
1569 = Gets a chunk off disk, optimizing reads to general buffer
\r
1571 ======================
\r
1574 void CAL_ReadGrChunk (int chunk)
\r
1576 long pos,compressed;
\r
1577 memptr bigbufferseg;
\r
1582 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1583 // a larger buffer
\r
1585 pos = GRFILEPOS(chunk);
\r
1586 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1590 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1593 compressed = GRFILEPOS(next)-pos;
\r
1595 lseek(grhandle,pos,SEEK_SET);
\r
1597 if (compressed<=BUFFERSIZE)
\r
1599 CA_FarRead(grhandle,bufferseg,compressed);
\r
1600 source = bufferseg;
\r
1604 MM_GetPtr(&bigbufferseg,compressed);
\r
1607 MM_SetLock (&bigbufferseg,true);
\r
1608 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
1609 source = bigbufferseg;
\r
1612 CAL_ExpandGrChunk (chunk,source);
\r
1614 if (compressed>BUFFERSIZE)
\r
1615 MM_FreePtr(&bigbufferseg);
\r
1619 ======================
\r
1623 = Makes sure a given chunk is in memory, loadiing it if needed
\r
1625 ======================
\r
1628 void CA_CacheGrChunk (int chunk)
\r
1630 long pos,compressed;
\r
1631 memptr bigbufferseg;
\r
1635 grneeded[chunk] |= ca_levelbit; // make sure it doesn't get removed
\r
1636 if (grsegs[chunk])
\r
1638 MM_SetPurge (&grsegs[chunk],0);
\r
1639 return; // allready in memory
\r
1642 // MDM begin - (GAMERS EDGE)
\r
1644 if (!FindFile("EGAGRAPH."EXT,NULL,2))
\r
1645 Quit("CA_CacheGrChunk(): Can't find graphics files.");
\r
1650 // load the chunk into a buffer, either the miscbuffer if it fits, or allocate
\r
1651 // a larger buffer
\r
1653 pos = GRFILEPOS(chunk);
\r
1654 if (pos<0) // $FFFFFFFF start is a sparse tile
\r
1658 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
1661 compressed = GRFILEPOS(next)-pos;
\r
1663 lseek(grhandle,pos,SEEK_SET);
\r
1665 if (compressed<=BUFFERSIZE)
\r
1667 CA_FarRead(grhandle,bufferseg,compressed);
\r
1668 source = bufferseg;
\r
1672 MM_GetPtr(&bigbufferseg,compressed);
\r
1673 MM_SetLock (&bigbufferseg,true);
\r
1674 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
1675 source = bigbufferseg;
\r
1678 CAL_ExpandGrChunk (chunk,source);
\r
1680 if (compressed>BUFFERSIZE)
\r
1681 MM_FreePtr(&bigbufferseg);
\r
1686 //==========================================================================
\r
1689 ======================
\r
1693 ======================
\r
1696 void CA_CacheMap (int mapnum)
\r
1698 long pos,compressed;
\r
1700 memptr *dest,bigbufferseg;
\r
1702 unsigned far *source;
\r
1703 #ifdef MAPHEADERLINKED
\r
1704 memptr buffer2seg;
\r
1709 // MDM begin - (GAMERS EDGE)
\r
1711 if (!FindFile("GAMEMAPS."EXT,NULL,1))
\r
1712 Quit("CA_CacheMap(): Can't find level files.");
\r
1718 // free up memory from last map
\r
1720 if (mapon>-1 && mapheaderseg[mapon])
\r
1721 MM_SetPurge (&(memptr)mapheaderseg[mapon],3);
\r
1722 for (plane=0;plane<MAPPLANES;plane++)
\r
1723 if (mapsegs[plane])
\r
1724 MM_FreePtr (&(memptr)mapsegs[plane]);
\r
1730 // load map header
\r
1731 // The header will be cached if it is still around
\r
1733 if (!mapheaderseg[mapnum])
\r
1735 pos = ((mapfiletype _seg *)tinf)->headeroffsets[mapnum];
\r
1736 if (pos<0) // $FFFFFFFF start is a sparse map
\r
1737 Quit ("CA_CacheMap: Tried to load a non existent map!");
\r
1739 MM_GetPtr(&(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1740 lseek(maphandle,pos,SEEK_SET);
\r
1741 CA_FarRead (maphandle,(memptr)mapheaderseg[mapnum],sizeof(maptype));
\r
1744 MM_SetPurge (&(memptr)mapheaderseg[mapnum],0);
\r
1747 // load the planes in
\r
1748 // If a plane's pointer still exists it will be overwritten (levels are
\r
1749 // allways reloaded, never cached)
\r
1752 size = mapheaderseg[mapnum]->width * mapheaderseg[mapnum]->height * 2;
\r
1754 for (plane = 0; plane<MAPPLANES; plane++)
\r
1756 pos = mapheaderseg[mapnum]->planestart[plane];
\r
1757 compressed = mapheaderseg[mapnum]->planelength[plane];
\r
1760 continue; // the plane is not used in this game
\r
1762 dest = &(memptr)mapsegs[plane];
\r
1763 MM_GetPtr(dest,size);
\r
1765 lseek(maphandle,pos,SEEK_SET);
\r
1766 if (compressed<=BUFFERSIZE)
\r
1767 source = bufferseg;
\r
1770 MM_GetPtr(&bigbufferseg,compressed);
\r
1771 MM_SetLock (&bigbufferseg,true);
\r
1772 source = bigbufferseg;
\r
1775 CA_FarRead(maphandle,(byte far *)source,compressed);
\r
1776 #ifdef MAPHEADERLINKED
\r
1778 // unhuffman, then unRLEW
\r
1779 // The huffman'd chunk has a two byte expanded length first
\r
1780 // The resulting RLEW chunk also does, even though it's not really
\r
1783 expanded = *source;
\r
1785 MM_GetPtr (&buffer2seg,expanded);
\r
1786 CAL_CarmackExpand (source, (unsigned far *)buffer2seg,expanded);
\r
1787 CA_RLEWexpand (((unsigned far *)buffer2seg)+1,*dest,size,
\r
1788 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
1789 MM_FreePtr (&buffer2seg);
\r
1793 // unRLEW, skipping expanded length
\r
1795 CA_RLEWexpand (source+1, *dest,size,
\r
1796 ((mapfiletype _seg *)tinf)->RLEWtag);
\r
1799 if (compressed>BUFFERSIZE)
\r
1800 MM_FreePtr(&bigbufferseg);
\r
1804 //===========================================================================
\r
1807 ======================
\r
1811 = Goes up a bit level in the needed lists and clears it out.
\r
1812 = Everything is made purgable
\r
1814 ======================
\r
1817 void CA_UpLevel (void)
\r
1819 if (ca_levelnum==7)
\r
1820 Quit ("CA_UpLevel: Up past level 7!");
\r
1826 //===========================================================================
\r
1829 ======================
\r
1833 = Goes down a bit level in the needed lists and recaches
\r
1834 = everything from the lower level
\r
1836 ======================
\r
1839 void CA_DownLevel (void)
\r
1842 Quit ("CA_DownLevel: Down past level 0!");
\r
1845 CA_CacheMarks(NULL);
\r
1848 //===========================================================================
\r
1851 ======================
\r
1855 = Clears out all the marks at the current level
\r
1857 ======================
\r
1860 void CA_ClearMarks (void)
\r
1864 for (i=0;i<NUMCHUNKS;i++)
\r
1865 grneeded[i]&=~ca_levelbit;
\r
1869 //===========================================================================
\r
1872 ======================
\r
1874 = CA_ClearAllMarks
\r
1876 = Clears out all the marks on all the levels
\r
1878 ======================
\r
1881 void CA_ClearAllMarks (void)
\r
1883 _fmemset (grneeded,0,sizeof(grneeded));
\r
1889 //===========================================================================
\r
1892 ======================
\r
1896 ======================
\r
1899 void CA_FreeGraphics (void)
\r
1903 for (i=0;i<NUMCHUNKS;i++)
\r
1905 MM_SetPurge (&(memptr)grsegs[i],3);
\r
1910 ======================
\r
1914 = Make everything possible purgable
\r
1916 ======================
\r
1919 void CA_SetAllPurge (void)
\r
1926 // free cursor sprite and background save
\r
1931 // free map headers and map planes
\r
1933 for (i=0;i<NUMMAPS;i++)
\r
1934 if (mapheaderseg[i])
\r
1935 MM_SetPurge (&(memptr)mapheaderseg[i],3);
\r
1939 MM_FreePtr (&(memptr)mapsegs[i]);
\r
1944 for (i=0;i<NUMSNDCHUNKS;i++)
\r
1946 MM_SetPurge (&(memptr)audiosegs[i],3);
\r
1951 CA_FreeGraphics ();
\r
1955 void CA_SetGrPurge (void)
\r
1962 for (i=0;i<NUMCHUNKS;i++)
\r
1964 MM_SetPurge (&(memptr)grsegs[i],3);
\r
1968 //===========================================================================
\r
1972 ======================
\r
1976 ======================
\r
1979 #define NUMBARS (17l*8)
\r
1982 unsigned thx,thy,lastx;
\r
1983 long barx,barstep;
\r
1985 void CAL_DialogDraw (char *title,unsigned numcache)
\r
1987 unsigned homex,homey,x;
\r
1989 barstep = (NUMBARS<<16)/numcache;
\r
1992 // draw dialog window (masked tiles 12 - 20 are window borders)
\r
1994 US_CenterWindow (20,8);
\r
1998 US_CPrint ("Loading");
\r
1999 fontcolor = F_SECONDCOLOR;
\r
2000 US_CPrint (title);
\r
2001 fontcolor = F_BLACK;
\r
2004 // draw thermometer bar
\r
2008 VWB_DrawTile8(thx,thy,0); // CAT3D numbers
\r
2009 VWB_DrawTile8(thx,thy+8,3);
\r
2010 VWB_DrawTile8(thx,thy+16,6);
\r
2011 VWB_DrawTile8(thx+17*8,thy,2);
\r
2012 VWB_DrawTile8(thx+17*8,thy+8,5);
\r
2013 VWB_DrawTile8(thx+17*8,thy+16,8);
\r
2014 for (x=thx+8;x<thx+17*8;x+=8)
\r
2016 VWB_DrawTile8(x,thy,1);
\r
2017 VWB_DrawTile8(x,thy+8,4);
\r
2018 VWB_DrawTile8(x,thy+16,7);
\r
2021 thx += 4; // first line location
\r
2023 barx = (long)thx<<16;
\r
2026 VW_UpdateScreen();
\r
2031 ======================
\r
2033 = CAL_DialogUpdate
\r
2035 ======================
\r
2038 void CAL_DialogUpdate (void)
\r
2044 if (xh - lastx > BARSTEP)
\r
2046 for (x=lastx;x<=xh;x++)
\r
2047 #if GRMODE == EGAGR
\r
2048 VWB_Vlin (thy,thy+13,x,14);
\r
2050 #if GRMODE == CGAGR
\r
2051 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2054 VW_UpdateScreen();
\r
2059 ======================
\r
2061 = CAL_DialogFinish
\r
2063 ======================
\r
2066 void CAL_DialogFinish (void)
\r
2070 xh = thx + NUMBARS;
\r
2071 for (x=lastx;x<=xh;x++)
\r
2072 #if GRMODE == EGAGR
\r
2073 VWB_Vlin (thy,thy+13,x,14);
\r
2075 #if GRMODE == CGAGR
\r
2076 VWB_Vlin (thy,thy+13,x,SECONDCOLOR);
\r
2078 VW_UpdateScreen();
\r
2082 //===========================================================================
\r
2085 ======================
\r
2089 ======================
\r
2091 #define MAXEMPTYREAD 1024
\r
2093 void CA_CacheMarks (char *title)
\r
2096 int i,next,numcache;
\r
2097 long pos,endpos,nextpos,nextendpos,compressed;
\r
2098 long bufferstart,bufferend; // file position of general buffer
\r
2100 memptr bigbufferseg;
\r
2102 dialog = (title!=NULL);
\r
2106 // go through and make everything not needed purgable
\r
2108 for (i=0;i<NUMCHUNKS;i++)
\r
2109 if (grneeded[i]&ca_levelbit)
\r
2111 if (grsegs[i]) // its allready in memory, make
\r
2112 MM_SetPurge(&grsegs[i],0); // sure it stays there!
\r
2118 if (grsegs[i]) // not needed, so make it purgeable
\r
2119 MM_SetPurge(&grsegs[i],3);
\r
2122 if (!numcache) // nothing to cache!
\r
2125 // MDM begin - (GAMERS EDGE)
\r
2127 if (!FindFile("EGAGRAPH."EXT,NULL,2))
\r
2128 Quit("CA_CacheMarks(): Can't find graphics files.");
\r
2135 write(profilehandle,title,strlen(title));
\r
2136 write(profilehandle,"\n",1);
\r
2139 drawcachebox(title,numcache);
\r
2143 // go through and load in anything still needed
\r
2145 bufferstart = bufferend = 0; // nothing good in buffer now
\r
2147 for (i=0;i<NUMCHUNKS;i++)
\r
2148 if ( (grneeded[i]&ca_levelbit) && !grsegs[i])
\r
2151 // update thermometer
\r
2153 if (dialog && updatecachebox)
\r
2154 updatecachebox ();
\r
2156 pos = GRFILEPOS(i);
\r
2161 while (GRFILEPOS(next) == -1) // skip past any sparse tiles
\r
2164 compressed = GRFILEPOS(next)-pos;
\r
2165 endpos = pos+compressed;
\r
2167 if (compressed<=BUFFERSIZE)
\r
2169 if (bufferstart<=pos
\r
2170 && bufferend>= endpos)
\r
2172 // data is allready in buffer
\r
2173 source = (byte _seg *)bufferseg+(pos-bufferstart);
\r
2177 // load buffer with a new block from disk
\r
2178 // try to get as many of the needed blocks in as possible
\r
2179 while ( next < NUMCHUNKS )
\r
2181 while (next < NUMCHUNKS &&
\r
2182 !(grneeded[next]&ca_levelbit && !grsegs[next]))
\r
2184 if (next == NUMCHUNKS)
\r
2187 nextpos = GRFILEPOS(next);
\r
2188 while (GRFILEPOS(++next) == -1) // skip past any sparse tiles
\r
2190 nextendpos = GRFILEPOS(next);
\r
2191 if (nextpos - endpos <= MAXEMPTYREAD
\r
2192 && nextendpos-pos <= BUFFERSIZE)
\r
2193 endpos = nextendpos;
\r
2195 next = NUMCHUNKS; // read pos to posend
\r
2198 lseek(grhandle,pos,SEEK_SET);
\r
2199 CA_FarRead(grhandle,bufferseg,endpos-pos);
\r
2200 bufferstart = pos;
\r
2201 bufferend = endpos;
\r
2202 source = bufferseg;
\r
2207 // big chunk, allocate temporary buffer
\r
2208 MM_GetPtr(&bigbufferseg,compressed);
\r
2211 MM_SetLock (&bigbufferseg,true);
\r
2212 lseek(grhandle,pos,SEEK_SET);
\r
2213 CA_FarRead(grhandle,bigbufferseg,compressed);
\r
2214 source = bigbufferseg;
\r
2217 CAL_ExpandGrChunk (i,source);
\r
2221 if (compressed>BUFFERSIZE)
\r
2222 MM_FreePtr(&bigbufferseg);
\r
2227 // finish up any thermometer remnants
\r
2229 if (dialog && finishcachebox)
\r