src/switch.c

   1 /* Copyright (C) 1996-1997 Aleksey Volynskov
   2  * Copyright (C) 2011 Rambo
   3  * Copyright (C) 2020 SovietPony
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, version 3 of the License ONLY.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "glob.h"
  19 #include <string.h>
  20 #include "view.h"
  21 #include "bmap.h"
  22 #include "switch.h"
  23 #include "player.h"
  24 #include "misc.h"
  25 #include "map.h"
  26 #include "files.h"
  27 #include "game.h"
  28 #include "monster.h"
  29 #include "render.h"
  30
  31 int sw_secrets;
  32 sw_t sw[MAXSW];
  33
  34 static void *sndswn, *sndswx, *sndnoway, *sndbdo, *sndbdc, *sndnotele;
  35 static int swsnd;
  36 static byte cht, chto, chf, f_ch;
  37
  38 void SW_alloc (void) {
  39   sndswn=Z_getsnd("SWTCHN");
  40   sndswx=Z_getsnd("SWTCHX");
  41   sndnoway=Z_getsnd("NOWAY");
  42   sndbdo=Z_getsnd("BDOPN");
  43   sndbdc=Z_getsnd("BDCLS");
  44   sndnotele=Z_getsnd("NOTELE");
  45 }
  46
  47 void SW_init (void) {
  48   int i;
  49   for (i = 0; i < MAXSW; i++) {
  50     sw[i].t = 0;
  51   }
  52   swsnd = 0;
  53 }
  54
  55 static void door(byte x,byte y) {
  56   byte ex;
  57
  58   if(x>=FLDW || y>=FLDH) return;
  59   if(fld[y][x]!=cht) return;
  60   ex=x+1;
  61   for(;x && fld[y][x-1]==cht;--x);
  62   for(;ex<FLDW && fld[y][ex]==cht;++ex);
  63   memset(fld[y]+x,chto,ex-x);
  64   if(f_ch) memset(fldf[y]+x,chf,ex-x);
  65   for(;x<ex;++x) {
  66         door(x,y-1);
  67         door(x,y+1);
  68   }
  69 }
  70
  71 void Z_water_trap (obj_t *o) {
  72   int i,j,sx,sy,x,y;
  73
  74   if((y=o->y)>=FLDH*CELH+o->h) return;
  75   if((x=o->x)<0 || o->x>FLDW*CELW) return;
  76   sx=(x-o->r)/CELW;
  77   sy=(y-o->h+1)/CELH;
  78   x=(x+o->r)/CELW;
  79   y=(y-o->h/2)/CELH;
  80   for(i=sx;i<=x;++i)
  81         for(j=sy;j<=y;++j)
  82           if(fld[j][i]==5) {
  83                 cht=5;chto=255;f_ch=0;
  84                 door(i,j);
  85           }
  86 }
  87
  88 void Z_untrap (byte t) {
  89   byte *p;
  90   word n;
  91
  92   for(p=(byte*)fld,n=FLDW*FLDH;n;--n,++p)
  93         if(*p==255) *p=t;
  94 }
  95
  96 static void opendoor(int i) {
  97   int j;
  98
  99   swsnd=Z_sound(sndbdo,128);
 100   j=fldf[sw[i].b][sw[i].a];
 101   cht=2;chto=3;chf=0;f_ch=1;
 102   door(sw[i].a,sw[i].b);
 103   fldf[sw[i].b][sw[i].a]=j;
 104   fld_need_remap=1;
 105 }
 106
 107 static int shutdoor(int i) {
 108   int j;
 109
 110   cht=3;chto=255;chf=fldf[sw[i].b][sw[i].a];f_ch=1;
 111   door(sw[i].a,sw[i].b);
 112   cht=255;
 113   if(Z_chktrap(0,0,-3,HIT_SOME)) {
 114         j=fldf[sw[i].b][sw[i].a];
 115         chto=3;chf=0;f_ch=1;
 116         door(sw[i].a,sw[i].b);
 117         fldf[sw[i].b][sw[i].a]=j;
 118         return 0;
 119   }
 120   chto=2;
 121   door(sw[i].a,sw[i].b);
 122   fld_need_remap=1;
 123   swsnd=Z_sound(sndbdc,128);
 124   return 1;
 125 }
 126
 127 void SW_act (void) {
 128   int i;
 129
 130   if(swsnd) --swsnd;
 131   for(i=0;i<MAXSW;++i) if(sw[i].t) {
 132     if(sw[i].tm) --sw[i].tm;
 133     switch(sw[i].t) {
 134       case SW_DOOR5: case SW_DOOR: case SW_SHUTDOOR:
 135         if(!sw[i].d) break;
 136         if(fld[sw[i].b][sw[i].a]!=3) {sw[i].d=0;break;}
 137         if(--sw[i].d==0) if(!shutdoor(i)) sw[i].d=9;
 138         break;
 139       case SW_TRAP:
 140         if(!sw[i].d) break;
 141         if(fld[sw[i].b][sw[i].a]!=2) {sw[i].d=0;break;}
 142         if(--sw[i].d==0) {opendoor(i);sw[i].tm=18;}
 143         break;
 144     }
 145   }
 146 }
 147
 148 static int doortime(int t) {
 149   switch(t) {
 150         case SW_DOOR5:          return 90;
 151   }
 152   return 0;
 153 }
 154
 155 void SW_cheat_open (void) {
 156   int i;
 157
 158   for(i=0;i<MAXSW;++i) if(sw[i].t && !sw[i].tm) switch(sw[i].t) {
 159         case SW_DOOR: case SW_DOOR5:
 160         case SW_OPENDOOR:
 161           if(fld[sw[i].b][sw[i].a]!=2) break;
 162           SW_press(sw[i].x*CELW+4,sw[i].y*CELH+4,1,1,0xFF,-3);
 163           break;
 164   }
 165 }
 166
 167 int SW_press (int x, int y, int r, int h, byte t, int o) {
 168   int sx,sy,i,p;
 169
 170   sx=(x-r)/CELW;sy=(y-h+1)/CELH;
 171   x=(x+r)/CELW;y/=CELH;
 172   for(i=p=0;i<MAXSW;++i) if(sw[i].t && !sw[i].tm) {
 173     if(sw[i].x>=sx && sw[i].x<=x && sw[i].y>=sy && sw[i].y<=y && ((sw[i].f&0x8F)&t)) {
 174       if(sw[i].f&0x70) if((sw[i].f&(t&0x70))!=(sw[i].f&0x70)) continue;
 175       switch(sw[i].t) {
 176                 case SW_EXIT:
 177                   g_exit=1;sw[i].tm=9;swsnd=Z_sound(sndswx,128);break;
 178                 case SW_EXITS:
 179                   g_exit=2;sw[i].tm=9;swsnd=Z_sound(sndswx,128);break;
 180                 case SW_DOOR: case SW_DOOR5:
 181                   switch(fld[sw[i].b][sw[i].a]) {
 182                         case 2:
 183                           opendoor(i);sw[i].tm=9;sw[i].d=doortime(sw[i].t);break;
 184                         case 3:
 185                           if(shutdoor(i)) {sw[i].tm=9;sw[i].d=0;}
 186                           else {
 187                             if(!swsnd) swsnd=Z_sound(sndnoway,128);
 188                             sw[i].d=2;
 189                           }break;
 190                   }break;
 191                 case SW_PRESS:
 192                   sw[i].tm=9;
 193                   SW_press((dword)sw[i].a*8+4,(dword)sw[i].b*8+12,8,16,(t&0x70)|0x80,o);
 194                   break;
 195                 case SW_TELE:
 196                   if(o < -2) break;
 197                   if(!Z_canfit((dword)sw[i].a*8+4,(dword)sw[i].b*8+7,r,h)) {
 198                     if(!swsnd) swsnd=Z_sound(sndnotele,128);
 199                     break;
 200                   }Z_teleobj(o,(dword)sw[i].a*8+4,(dword)sw[i].b*8+7);
 201                   sw[i].tm=1;
 202                   break;
 203                 case SW_OPENDOOR:
 204                   if(fld[sw[i].b][sw[i].a]!=2) break;
 205                   opendoor(i);
 206                   sw[i].tm=1;
 207                   break;
 208                 case SW_SHUTDOOR:
 209                   if(fld[sw[i].b][sw[i].a]!=3) break;
 210                   if(shutdoor(i)) {sw[i].tm=1;sw[i].d=0;}
 211                   else {
 212                     if(!swsnd) swsnd=Z_sound(sndnoway,128);
 213                     sw[i].d=2;
 214                   }break;
 215                 case SW_SHUTTRAP: case SW_TRAP:
 216                   if(fld[sw[i].b][sw[i].a]!=3) break;
 217                   cht=3;chto=255;chf=fldf[sw[i].b][sw[i].a];f_ch=1;
 218                   door(sw[i].a,sw[i].b);
 219                   Z_chktrap(1,100,-3,HIT_TRAP);
 220                   cht=255;chto=2;
 221                   door(sw[i].a,sw[i].b);
 222                   fld_need_remap=1;
 223                   swsnd=Z_sound(sndswn,128);
 224                   sw[i].tm=1;sw[i].d=20;
 225                   break;
 226                 case SW_LIFT:
 227                   if(fld[sw[i].b][sw[i].a]==10) {
 228                     cht=10;chto=9;f_ch=0;
 229                   }else if(fld[sw[i].b][sw[i].a]==9) {
 230                     cht=9;chto=10;f_ch=0;
 231                   }else break;
 232                   door(sw[i].a,sw[i].b);
 233                   fld_need_remap=1;
 234                   swsnd=Z_sound(sndswx,128);
 235                   sw[i].tm=9;
 236                   break;
 237                 case SW_LIFTUP:
 238                   if(fld[sw[i].b][sw[i].a]!=10) break;
 239                   cht=10;chto=9;f_ch=0;
 240                   door(sw[i].a,sw[i].b);
 241                   fld_need_remap=1;
 242                   swsnd=Z_sound(sndswx,128);
 243                   sw[i].tm=1;
 244                   break;
 245                 case SW_LIFTDOWN:
 246                   if(fld[sw[i].b][sw[i].a]!=9) break;
 247                   cht=9;chto=10;f_ch=0;
 248                   door(sw[i].a,sw[i].b);
 249                   fld_need_remap=1;
 250                   swsnd=Z_sound(sndswx,128);
 251                   sw[i].tm=1;
 252                   break;
 253                 case SW_SECRET:
 254                   if(o!=-1 && o!=-2) break;
 255                   if(o==-1) ++pl1.secrets;
 256                   else ++pl2.secrets;
 257                   sw[i].tm=1;sw[i].t=0;break;
 258       }
 259       if (sw[i].tm != 0) {
 260         R_switch_texture(sw[i].x, sw[i].y);
 261         p = 1;
 262       }
 263       if(sw[i].tm==1) sw[i].tm=0;
 264     }
 265   }
 266   return p;
 267 }