src/files.c

   1 /*
   2    Copyright (C) Prikol Software 1996-1997
   3    Copyright (C) Aleksey Volynskov 1996-1997
   4    Copyright (C) <ARembo@gmail.com> 2011
   5
   6    This file is part of the Doom2D:Rembo project.
   7
   8    Doom2D:Rembo is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License version 2 as
  10    published by the Free Software Foundation.
  11
  12    Doom2D:Rembo is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, see <http://www.gnu.org/licenses/> or
  19    write to the Free Software Foundation, Inc.,
  20    51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  21 */
  22
  23 #include "glob.h"
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <stdlib.h>
  27 #include <sys/stat.h>
  28 #include "files.h"
  29 #include "map.h"
  30 #include "my.h"
  31 #include "game.h"
  32 #include "view.h"
  33 #include "dots.h"
  34 #include "smoke.h"
  35 #include "fx.h"
  36 #include "items.h"
  37 #include "monster.h"
  38 #include "player.h"
  39 #include "switch.h"
  40 #include "weapons.h"
  41 #include "error.h"
  42 #include "cp866.h"
  43
  44 typedef struct {
  45   byte n, i, v, d;
  46 } dmv;
  47
  48 int d_start, d_end;
  49 mwad_t wad[MAX_WAD];
  50 char wads[MAX_WADS][__MAX_PATH];
  51 FILE* wadh[MAX_WADS];
  52
  53 static byte seq[255];
  54 static byte seqn;
  55 static int inum=0;
  56 static dmv *pat=NULL;
  57 static unsigned *patp;
  58 static void **dmi;
  59
  60 static int m_start, m_end;
  61 static int s_start, s_end;
  62 static int wad_num;
  63
  64 static char f_drive[__MAX_DRIVE];
  65 static char f_dir[__MAX_DIR];
  66 static char f_name[__MAX_FNAME];
  67 static char f_ext[__MAX_EXT];
  68
  69 void F_startup (void) {
  70   logo("F_startup: настройка файловой системы\n");
  71   memset(wads,0,sizeof(wads));
  72 }
  73
  74 void F_addwad (const char *fn) {
  75   int i;
  76
  77   for(i=0;i<MAX_WADS;++i) if(wads[i][0]==0) {
  78     strcpy(wads[i],fn);return;
  79   }
  80   ERR_failinit("Не могу добавить WAD %s",fn);
  81 }
  82
  83 static int myfilelength (FILE *h) {
  84     int pos = ftell(h);
  85     fseek (h, 0, SEEK_END);
  86     int len = ftell(h);
  87     fseek (h, pos, SEEK_SET);
  88     return len;
  89 }
  90
  91 // build wad directory
  92 void F_initwads (void) {
  93   int i, j, k, p;
  94   FILE *h;
  95   char s[4];
  96   int n, o;
  97   wad_t w;
  98
  99   logo("F_initwads: подключение WAD-файлов\n");
 100   for (i = 0; i < MAX_WAD; ++i) {
 101     wad[i].n[0] = 0;
 102   }
 103
 104   logo("   подключается  %s\n", wads[0]);
 105   if ((wadh[0] = h = fopen(wads[0], "rb")) == NULL) {
 106     ERR_failinit("Не могу открыть файл: %s", wads[0]);
 107   }
 108
 109   s[0] = '\0';
 110   myfread(s, 1, 4, h);
 111   if (strncmp(s, "IWAD", 4) != 0 && strncmp(s, "PWAD", 4) != 0) {
 112     ERR_failinit("Нет подписи IWAD или PWAD (1)");
 113   }
 114
 115   p = 0; // wad number
 116   n = myfread32(h); // num
 117   o = myfread32(h); // offset
 118   fseek(h, o, SEEK_SET);
 119   for (j = 0; j < n; ++j) {
 120     w.o = myfread32(h); // offset
 121     w.l = myfread32(h); // len
 122     myfread(w.n, 1, 8, h); // name
 123     if (p >= MAX_WAD) {
 124       ERR_failinit("Слишком много элементов WAD'а");
 125     }
 126     wad[p].o = w.o;
 127     wad[p].l = w.l;
 128     memcpy(wad[p].n, w.n, 8);
 129     wad[p].f = 0;
 130     ++p;
 131   }
 132
 133   //fclose(h);
 134
 135   for (i = 1; i < MAX_WADS; ++i) {
 136     if (wads[i][0] != 0) {
 137       logo("  подключается %s\n", wads[i]);
 138       if ((wadh[i] = h = fopen(wads[i], "rb")) == NULL) {
 139         ERR_failinit("Не могу открыть файл2:  %s", wads[i]);
 140       }
 141       mysplitpath(wads[i], f_drive, f_dir, f_name, f_ext);
 142       if (cp866_strcasecmp(f_ext, ".lmp") == 0) {
 143         for (k = 0; k < MAX_WAD; ++k) {
 144           if (cp866_strncasecmp(wad[k].n, f_name, 8) == 0) {
 145             wad[k].o = 0;
 146             wad[k].l = myfilelength(h);
 147             wad[k].f = i;
 148             break;
 149           }
 150           if (k >= MAX_WAD) {
 151             if (p >= MAX_WAD) {
 152               ERR_failinit("Слишком много элементов WAD'а");
 153             }
 154             memset(wad[p].n, 0, 8);
 155             strncpy(wad[p].n, f_name, 8);
 156             wad[p].o = 0;
 157             wad[p].l = myfilelength(h);
 158             wad[p].f = i;
 159             ++p;
 160           }
 161         }
 162
 163         s[0] = '\0';
 164         myfread(s, 1, 4, h);
 165         if (strncmp(s, "IWAD", 4) != 0 && strncmp(s, "PWAD", 4) != 0) {
 166           ERR_failinit("Нет подписи IWAD или PWAD (2)");
 167         }
 168         n = myfread32(h); // num
 169         o = myfread32(h); // offset
 170         fseek(h, o, SEEK_SET);
 171         for (j = 0; j < n; ++j) {
 172           w.o = myfread32(h); // offset
 173           w.o = myfread32(h); // len
 174           myfread(w.n, 1, 8, h); // name
 175           for (k = 0; k < MAX_WAD; ++k) {
 176             if (cp866_strncasecmp(wad[k].n, w.n, 8) == 0) {
 177               wad[k].o = w.o;
 178               wad[k].l = w.l;
 179               wad[k].f = i;
 180               break;
 181             }
 182             if (k >= MAX_WAD) {
 183               if (p >= MAX_WAD) {
 184                 ERR_failinit("Слишком много элементов WAD'а");
 185               }
 186               memcpy(wad[p].n, w.n, 8);
 187               wad[p].o = w.o;
 188               wad[p].l = w.l;
 189               wad[p].f = i;
 190               ++p;
 191             }
 192           }
 193         }
 194       }
 195     }
 196         }
 197
 198   wad_num = p;
 199 }
 200
 201 // allocate resources
 202 // (called from M_startup)
 203 void F_allocres (void) {
 204   d_start=F_getresid("D_START");
 205   d_end=F_getresid("D_END");
 206   m_start=F_getresid("M_START");
 207   m_end=F_getresid("M_END");
 208   s_start=F_getresid("S_START");
 209   s_end=F_getresid("S_END");
 210 }
 211
 212 // load resource
 213 void F_loadres (int r, void *p, dword o, dword l) {
 214
 215   int oo;
 216   FILE *fh;
 217
 218
 219   oo=ftell(fh=wadh[wad[r].f]);
 220
 221   if(fseek(fh,wad[r].o+o,SEEK_SET)!=0)
 222     ERR_fatal("Ошибка при чтении файла");
 223
 224   if((dword)myfreadc(p,1,l,fh)!=l)
 225     ERR_fatal("Ошибка при загрузке ресурса %.8s",wad[r].n);
 226
 227   fseek(fh,oo,SEEK_SET);
 228
 229 }
 230
 231 /*
 232 // unused
 233 void F_saveres(int r, void *p, dword o, dword l) {
 234   FILE* fh = wadh[wad[r].f];
 235   int oo = ftell(fh);
 236   if (fseek(fh, wad[r].o + o, SEEK_SET) != 0) {
 237     ERR_fatal("Ошибка при чтении файла");
 238   }
 239   myfwrite(p, l, 1, fh);
 240   fseek(fh, oo, SEEK_SET);
 241 }
 242 */
 243
 244 // get resource id
 245 int F_findres (const char n[8]) {
 246   int i;
 247   for (i = 0; i < wad_num; i++) {
 248     if (cp866_strncasecmp(wad[i].n, n, 8) == 0) {
 249       return i;
 250     }
 251   }
 252   return -1;
 253 }
 254
 255 // get resource id
 256 int F_getresid (const char n[8]) {
 257   int i = F_findres(n);
 258   if (i == -1) {
 259     ERR_fatal("F_getresid: ресурс %.8s не найден", n);
 260   }
 261   return i;
 262 }
 263
 264 void F_getresname (char n[8], int r) {
 265   memcpy(n, wad[r].n, 8);
 266 }
 267
 268 // get sprite id
 269 int F_getsprid (const char n[4], int s, int d, char *dir) {
 270   int i;
 271   byte a, b;
 272   s += 'A';
 273   d += '0';
 274   for (i = s_start + 1; i < s_end; i++) {
 275     if (cp866_strncasecmp(wad[i].n, n, 4) == 0 && (wad[i].n[4] == s || wad[i].n[6] == s)) {
 276       a = wad[i].n[4] == s ? wad[i].n[5] : 0;
 277       b = wad[i].n[6] == s ? wad[i].n[7] : 0;
 278       if (a == '0' || b == '0' || a == d || b == d) {
 279         if (dir != NULL) {
 280           *dir = a != '0' && b == '0' || a != d && b == d;
 281         }
 282         return i;
 283       }
 284     }
 285   }
 286   ERR_fatal("F_getsprid: image %.4s%c%c not found", n, s, d);
 287   return -1;
 288 }
 289
 290 int F_getreslen (int r) {
 291   return wad[r].l;
 292 }
 293
 294 void F_nextmus (char *s) {
 295   int i;
 296   i=F_findres(s);
 297   if(i<=m_start || i>=m_end) i=m_start;
 298   for(++i;;++i) {
 299     if(i>=m_end) i=m_start+1;
 300
 301     if (cp866_strcasecmp(wad[i].n,"MENU") == 0 ||
 302         cp866_strcasecmp(wad[i].n,"INTERMUS") == 0 ||
 303         cp866_strcasecmp(wad[i].n,"\x8a\x8e\x8d\x85\x96\x0") == 0)
 304         continue;
 305
 306     if(cp866_strncasecmp(wad[i].n,"DMI",3)!=0) break;
 307   }
 308   memcpy(s,wad[i].n,8);
 309 }
 310
 311 void F_randmus (char *s) {
 312   int i;
 313   int n = myrand(10);
 314   for (i = 0; i < n; i++) {
 315     F_nextmus(s);
 316   }
 317 }
 318
 319 // reads bytes from file until CR
 320 void F_readstr (FILE* h, char *s, int m) {
 321   int i = 0;
 322   size_t len = 0;
 323   static char c = 0;
 324   while (i < m) {
 325     c = 13;
 326     len = myfreadc(&c, 1, 1, h);
 327     if (len == 0 || c == 13 || c == 10) {
 328       break;
 329     }
 330     s[i] = c;
 331     i++;
 332   }
 333   s[i] = 0;
 334 }
 335
 336 /*
 337 // unused
 338 // reads bytes from file until NUL
 339 void F_readstrz (FILE* h,char *s,int m) {
 340   int i = 0;
 341   size_t len = 0;
 342   static char c = 0;
 343   while (i < m) {
 344     c = 0;
 345     len = myfreadc(&c, 1, 1, h);
 346     if (len == 0 || c == 0) {
 347       break;
 348     }
 349     s[i] = c;
 350     i++;
 351   }
 352   s[i] = 0;
 353 }
 354 */
 355
 356 /*void F_freemus(void) {
 357
 358   int i;
 359
 360   if(!pat) return;
 361   S_stopmusic();
 362   free(pat);free(patp);
 363   for(i=0;i<inum;++i) if(dmi[i]!=NULL) free(dmi[i]);
 364   free(dmi);
 365   pat=NULL;
 366
 367 }
 368 */
 369
 370 /*void F_loadmus(char n[8]) {
 371   int r,i,j;
 372   FILE *h;
 373   int o;
 374   struct{
 375         char id[4];
 376         byte ver,pat;
 377         word psz;
 378   }d;
 379   struct{byte t;char n[13];word r;}di;
 380
 381   if((r=F_findres(n))==-1) return;
 382   fseek(h=wadh[wad[r].f],wad[r].o,SEEK_SET);
 383   myfread(&d,1,sizeof(d),h);
 384   if(memcmp(d.id,"DMM",4)!=0) return;
 385   if(!(pat=malloc(d.psz<<2))) return;
 386   myfread(pat,1,d.psz<<2,h);
 387   myfread(&seqn,1,1,h);if(seqn) myfread(seq,1,seqn,h);
 388   inum=0;myfread(&inum,1,1,h);
 389   if(!(dmi=malloc(inum*4))) {free(pat);pat=NULL;return;}
 390   if(!(patp=malloc((word)d.pat*32))) {free(pat);free(dmi);pat=NULL;return;}
 391   for(i=0;i<inum;++i) {
 392         dmi[i]=NULL;
 393         myfread(&di,1,16,h);o=ftell(h);
 394         for(r=0;r<12;++r) if(di.n[r]=='.') di.n[r]=0;
 395         if((r=F_findres(di.n))==-1) continue;
 396         if(!(dmi[i]=malloc(wad[r].l+8))) continue;
 397         memset(dmi[i],0,16);
 398         F_loadres(r,dmi[i],0,2);
 399         F_loadres(r,(int*)dmi[i]+1,2,2);
 400         F_loadres(r,(int*)dmi[i]+2,4,2);
 401         F_loadres(r,(int*)dmi[i]+3,6,2);
 402         F_loadres(r,(int*)dmi[i]+4,8,wad[r].l-8);
 403         fseek(h,o,SEEK_SET);
 404   }
 405   for(i=r=0,j=(word)d.pat<<3;i<j;++i) {
 406         patp[i]=r<<2;
 407         while(pat[r++].v!=0x80);
 408   }
 409  }
 410 */
 411