src/switch.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 <string.h>
  25 #include "view.h"
  26 #include "bmap.h"
  27 #include "switch.h"
  28 #include "player.h"
  29 #include "misc.h"
  30 #include "map.h"
  31
  32 #define MAXSW 100
  33
  34 extern map_block_t blk;
  35
  36 #pragma pack(1)
  37 typedef struct{
  38   byte x,y;
  39   byte t,tm;
  40   byte a,b,c,d;
  41   byte f;
  42 }sw_t;
  43 #pragma pack()
  44
  45 static sw_t sw[MAXSW];
  46
  47 static void *sndswn,*sndswx,*sndnoway,*sndbdo,*sndbdc,*sndnotele;
  48 static int swsnd;
  49
  50 int sw_secrets;
  51
  52 void SW_savegame (FILE *h) {
  53   int i, n;
  54   for (n = MAXSW - 1; n >= 0 && sw[n].t == 0; n--) {
  55     // empty
  56   }
  57   n += 1;
  58   myfwrite32(n, h);
  59   for (i = 0; i < n; i++) {
  60     myfwrite8(sw[i].x, h);
  61     myfwrite8(sw[i].y, h);
  62     myfwrite8(sw[i].t, h);
  63     myfwrite8(sw[i].tm, h);
  64     myfwrite8(sw[i].a, h);
  65     myfwrite8(sw[i].b, h);
  66     myfwrite8(sw[i].c, h);
  67     myfwrite8(sw[i].d, h);
  68     myfwrite8(sw[i].f, h);
  69   }
  70   myfwrite32(sw_secrets, h);
  71 }
  72
  73 void SW_loadgame (FILE *h) {
  74   int i, n;
  75   myfread32(&n, h);
  76   for (i = 0; i < n; i++) {
  77     myfread8(&sw[i].x, h);
  78     myfread8(&sw[i].y, h);
  79     myfread8(&sw[i].t, h);
  80     myfread8(&sw[i].tm, h);
  81     myfread8(&sw[i].a, h);
  82     myfread8(&sw[i].b, h);
  83     myfread8(&sw[i].c, h);
  84     myfread8(&sw[i].d, h);
  85     myfread8(&sw[i].f, h);
  86   }
  87   myfread32(&sw_secrets, h);
  88 }
  89
  90 int SW_load (FILE *h) {
  91   int i;
  92   switch(blk.t) {
  93         case MB_SWITCH2:
  94           sw_secrets = 0;
  95           for (i = 0; i < MAXSW && blk.sz > 0; ++i, blk.sz -= 9) {
  96       myfread8(&sw[i].x, h);
  97       myfread8(&sw[i].y, h);
  98       myfread8(&sw[i].t, h);
  99       myfread8(&sw[i].tm, h); // unused
 100       myfread8(&sw[i].a, h);
 101       myfread8(&sw[i].b, h);
 102       myfread8(&sw[i].c, h);
 103       myfread8(&sw[i].d, h); // unused
 104       myfread8(&sw[i].f, h);
 105       sw[i].tm = 0;
 106       sw[i].d = 0;
 107       sw[i].f |= 0x80;
 108       if (sw[i].t == SW_SECRET) {
 109         ++sw_secrets;
 110       }
 111           }
 112           return 1;
 113   }
 114   return 0;
 115 }
 116
 117 void SW_alloc(void) {
 118   sndswn=Z_getsnd("SWTCHN");
 119   sndswx=Z_getsnd("SWTCHX");
 120   sndnoway=Z_getsnd("NOWAY");
 121   sndbdo=Z_getsnd("BDOPN");
 122   sndbdc=Z_getsnd("BDCLS");
 123   sndnotele=Z_getsnd("NOTELE");
 124 }
 125
 126 void SW_init(void) {
 127   int i;
 128
 129   for(i=0;i<MAXSW;++i) sw[i].t=0;
 130   swsnd=0;
 131 }
 132
 133 static byte cht,chto,chf,f_ch;
 134
 135 static void door(byte x,byte y) {
 136   byte ex;
 137
 138   if(x>=FLDW || y>=FLDH) return;
 139   if(fld[y][x]!=cht) return;
 140   ex=x+1;
 141   for(;x && fld[y][x-1]==cht;--x);
 142   for(;ex<FLDW && fld[y][ex]==cht;++ex);
 143   memset(fld[y]+x,chto,ex-x);
 144   if(f_ch) memset(fldf[y]+x,chf,ex-x);
 145   for(;x<ex;++x) {
 146         door(x,y-1);
 147         door(x,y+1);
 148   }
 149 }
 150
 151 void Z_water_trap(obj_t *o) {
 152   int i,j,sx,sy,x,y;
 153
 154   if((y=o->y)>=FLDH*CELH+o->h) return;
 155   if((x=o->x)<0 || o->x>FLDW*CELW) return;
 156   sx=(x-o->r)/CELW;
 157   sy=(y-o->h+1)/CELH;
 158   x=(x+o->r)/CELW;
 159   y=(y-o->h/2)/CELH;
 160   for(i=sx;i<=x;++i)
 161         for(j=sy;j<=y;++j)
 162           if(fld[j][i]==5) {
 163                 cht=5;chto=255;f_ch=0;
 164                 door(i,j);
 165           }
 166 }
 167
 168 void Z_untrap(byte t) {
 169   byte *p;
 170   word n;
 171
 172   for(p=(byte*)fld,n=FLDW*FLDH;n;--n,++p)
 173         if(*p==255) *p=t;
 174 }
 175
 176 static void opendoor(int i) {
 177   int j;
 178
 179   swsnd=Z_sound(sndbdo,128);
 180   j=fldf[sw[i].b][sw[i].a];
 181   cht=2;chto=3;chf=0;f_ch=1;
 182   door(sw[i].a,sw[i].b);
 183   fldf[sw[i].b][sw[i].a]=j;
 184   fld_need_remap=1;
 185 }
 186
 187 static int shutdoor(int i) {
 188   int j;
 189
 190   cht=3;chto=255;chf=fldf[sw[i].b][sw[i].a];f_ch=1;
 191   door(sw[i].a,sw[i].b);
 192   cht=255;
 193   if(Z_chktrap(0,0,-3,HIT_SOME)) {
 194         j=fldf[sw[i].b][sw[i].a];
 195         chto=3;chf=0;f_ch=1;
 196         door(sw[i].a,sw[i].b);
 197         fldf[sw[i].b][sw[i].a]=j;
 198         return 0;
 199   }
 200   chto=2;
 201   door(sw[i].a,sw[i].b);
 202   fld_need_remap=1;
 203   swsnd=Z_sound(sndbdc,128);
 204   return 1;
 205 }
 206
 207 void SW_act(void) {
 208   int i;
 209
 210   if(swsnd) --swsnd;
 211   for(i=0;i<MAXSW;++i) if(sw[i].t) {
 212     if(sw[i].tm) --sw[i].tm;
 213     switch(sw[i].t) {
 214       case SW_DOOR5: case SW_DOOR: case SW_SHUTDOOR:
 215         if(!sw[i].d) break;
 216         if(fld[sw[i].b][sw[i].a]!=3) {sw[i].d=0;break;}
 217         if(--sw[i].d==0) if(!shutdoor(i)) sw[i].d=9;
 218         break;
 219       case SW_TRAP:
 220         if(!sw[i].d) break;
 221         if(fld[sw[i].b][sw[i].a]!=2) {sw[i].d=0;break;}
 222         if(--sw[i].d==0) {opendoor(i);sw[i].tm=18;}
 223         break;
 224     }
 225   }
 226 }
 227
 228 static int doortime(int t) {
 229   switch(t) {
 230         case SW_DOOR5:          return 90;
 231   }
 232   return 0;
 233 }
 234
 235 void SW_cheat_open(void) {
 236   int i;
 237
 238   for(i=0;i<MAXSW;++i) if(sw[i].t && !sw[i].tm) switch(sw[i].t) {
 239         case SW_DOOR: case SW_DOOR5:
 240         case SW_OPENDOOR:
 241           if(fld[sw[i].b][sw[i].a]!=2) break;
 242           SW_press(sw[i].x*CELW+4,sw[i].y*CELH+4,1,1,0xFF,-3);
 243           break;
 244   }
 245 }
 246
 247 int SW_press(int x,int y,int r,int h,byte t,int o) {
 248   int sx,sy,i,p;
 249
 250   sx=(x-r)/CELW;sy=(y-h+1)/CELH;
 251   x=(x+r)/CELW;y/=CELH;
 252   for(i=p=0;i<MAXSW;++i) if(sw[i].t && !sw[i].tm) {
 253     if(sw[i].x>=sx && sw[i].x<=x && sw[i].y>=sy && sw[i].y<=y && ((sw[i].f&0x8F)&t)) {
 254       if(sw[i].f&0x70) if((sw[i].f&(t&0x70))!=(sw[i].f&0x70)) continue;
 255       switch(sw[i].t) {
 256                 case SW_EXIT:
 257                   g_exit=1;sw[i].tm=9;swsnd=Z_sound(sndswx,128);break;
 258                 case SW_EXITS:
 259                   g_exit=2;sw[i].tm=9;swsnd=Z_sound(sndswx,128);break;
 260                 case SW_DOOR: case SW_DOOR5:
 261                   switch(fld[sw[i].b][sw[i].a]) {
 262                         case 2:
 263                           opendoor(i);sw[i].tm=9;sw[i].d=doortime(sw[i].t);break;
 264                         case 3:
 265                           if(shutdoor(i)) {sw[i].tm=9;sw[i].d=0;}
 266                           else {
 267                             if(!swsnd) swsnd=Z_sound(sndnoway,128);
 268                             sw[i].d=2;
 269                           }break;
 270                   }break;
 271                 case SW_PRESS:
 272                   sw[i].tm=9;
 273                   SW_press((dword)sw[i].a*8+4,(dword)sw[i].b*8+12,8,16,(t&0x70)|0x80,o);
 274                   break;
 275                 case SW_TELE:
 276                   if(o < -2) break;
 277                   if(!Z_canfit((dword)sw[i].a*8+4,(dword)sw[i].b*8+7,r,h)) {
 278                     if(!swsnd) swsnd=Z_sound(sndnotele,128);
 279                     break;
 280                   }Z_teleobj(o,(dword)sw[i].a*8+4,(dword)sw[i].b*8+7);
 281                   sw[i].tm=1;
 282                   break;
 283                 case SW_OPENDOOR:
 284                   if(fld[sw[i].b][sw[i].a]!=2) break;
 285                   opendoor(i);
 286                   sw[i].tm=1;
 287                   break;
 288                 case SW_SHUTDOOR:
 289                   if(fld[sw[i].b][sw[i].a]!=3) break;
 290                   if(shutdoor(i)) {sw[i].tm=1;sw[i].d=0;}
 291                   else {
 292                     if(!swsnd) swsnd=Z_sound(sndnoway,128);
 293                     sw[i].d=2;
 294                   }break;
 295                 case SW_SHUTTRAP: case SW_TRAP:
 296                   if(fld[sw[i].b][sw[i].a]!=3) break;
 297                   cht=3;chto=255;chf=fldf[sw[i].b][sw[i].a];f_ch=1;
 298                   door(sw[i].a,sw[i].b);
 299                   Z_chktrap(1,100,-3,HIT_TRAP);
 300                   cht=255;chto=2;
 301                   door(sw[i].a,sw[i].b);
 302                   fld_need_remap=1;
 303                   swsnd=Z_sound(sndswn,128);
 304                   sw[i].tm=1;sw[i].d=20;
 305                   break;
 306                 case SW_LIFT:
 307                   if(fld[sw[i].b][sw[i].a]==10) {
 308                     cht=10;chto=9;f_ch=0;
 309                   }else if(fld[sw[i].b][sw[i].a]==9) {
 310                     cht=9;chto=10;f_ch=0;
 311                   }else break;
 312                   door(sw[i].a,sw[i].b);
 313                   fld_need_remap=1;
 314                   swsnd=Z_sound(sndswx,128);
 315                   sw[i].tm=9;
 316                   break;
 317                 case SW_LIFTUP:
 318                   if(fld[sw[i].b][sw[i].a]!=10) break;
 319                   cht=10;chto=9;f_ch=0;
 320                   door(sw[i].a,sw[i].b);
 321                   fld_need_remap=1;
 322                   swsnd=Z_sound(sndswx,128);
 323                   sw[i].tm=1;
 324                   break;
 325                 case SW_LIFTDOWN:
 326                   if(fld[sw[i].b][sw[i].a]!=9) break;
 327                   cht=9;chto=10;f_ch=0;
 328                   door(sw[i].a,sw[i].b);
 329                   fld_need_remap=1;
 330                   swsnd=Z_sound(sndswx,128);
 331                   sw[i].tm=1;
 332                   break;
 333                 case SW_SECRET:
 334                   if(o!=-1 && o!=-2) break;
 335                   if(o==-1) ++pl1.secrets;
 336                   else ++pl2.secrets;
 337                   sw[i].tm=1;sw[i].t=0;break;
 338       }
 339       if(sw[i].tm)
 340         {fldb[sw[i].y][sw[i].x]=walswp[fldb[sw[i].y][sw[i].x]];p=1;}
 341       if(sw[i].tm==1) sw[i].tm=0;
 342     }
 343   }
 344   return p;
 345 }