src/smoke.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 <stdlib.h>
  25 #include "view.h"
  26 #include "smoke.h"
  27 #include "fx.h"
  28 #include "misc.h"
  29 #include "my.h"
  30
  31 #define MAXSR 20
  32
  33 smoke_t sm[MAXSMOK];
  34
  35 static int sr_r,sxr[MAXSR],syr[MAXSR];
  36 static int lsm;
  37
  38 static void *burnsnd;
  39 static int burntm=0;
  40
  41 void SMK_savegame (FILE *h) {
  42   int i, n;
  43   for (i = n = 0; i < MAXSMOK; ++i) {
  44     if (sm[i].t) {
  45       ++n;
  46     }
  47   }
  48   myfwrite32(n, h);
  49   for (i = 0; i < MAXSMOK; ++i) {
  50     if (sm[i].t) {
  51       myfwrite32(sm[i].x, h);
  52       myfwrite32(sm[i].y, h);
  53       myfwrite32(sm[i].xv, h);
  54       myfwrite32(sm[i].xv, h);
  55       myfwrite8(sm[i].t, h);
  56       myfwrite8(sm[i].s, h);
  57       myfwrite16(sm[i].o, h);
  58     }
  59   }
  60 }
  61
  62 void SMK_loadgame (FILE *h) {
  63   int i, n;
  64   n = myfread32(h);
  65   for (i = 0; i < n; ++i) {
  66     sm[i].x = myfread32(h);
  67     sm[i].y = myfread32(h);
  68     sm[i].xv = myfread32(h);
  69     sm[i].xv = myfread32(h);
  70     sm[i].t = myfread8(h);
  71     sm[i].s = myfread8(h);
  72     sm[i].o = myfread16(h);
  73   }
  74 }
  75
  76 void SMK_init(void) {
  77   int i;
  78
  79   for(i=0;i<MAXSMOK;++i) {sm[i].t=0;}
  80   lsm=0;
  81   burntm=0;
  82 }
  83
  84 void SMK_alloc(void) {
  85   int i;
  86   burnsnd=Z_getsnd("BURN");
  87   for(i=0;i<MAXSR;++i) {
  88     sxr[i]=myrand(256*2+1)-256;
  89     syr[i]=myrand(256*2+1)-256;
  90   }
  91   sr_r=0;
  92 }
  93
  94 static void inclast(void) {
  95   if(++lsm>=MAXSMOK) lsm=0;
  96 }
  97
  98 void SMK_act(void) {
  99   int i,ox,oy;
 100   static obj_t o;
 101
 102   if(burntm) --burntm;
 103   for(i=0;i<MAXSMOK;++i) if(sm[i].t) {
 104     if(sm[i].s) {
 105       ox=sm[i].x;oy=sm[i].y;
 106       sm[i].xv=Z_dec(sm[i].xv,20);
 107       sm[i].yv=Z_dec(sm[i].yv,20);
 108       sm[i].x+=sm[i].xv/2;sm[i].y+=sm[i].yv/2;
 109       if(!Z_canfit(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 110         sm[i].x=ox;sm[i].y=oy;
 111       }else if(Z_inwater(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 112         sm[i].x=ox;sm[i].y=oy;
 113       }
 114       ox=sm[i].x;oy=sm[i].y;
 115       sm[i].x+=sm[i].xv/2;sm[i].y+=sm[i].yv/2;
 116       if(!Z_canfit(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 117         sm[i].x=ox;sm[i].y=oy;
 118       }else if(Z_inwater(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 119         sm[i].x=ox;sm[i].y=oy;
 120       }
 121       if(sm[i].o!=-3) {
 122         o.x=sm[i].x>>8;o.y=sm[i].y>>8;
 123         o.xv=sm[i].xv>>10;o.yv=sm[i].yv>>10;
 124         o.vx=o.vy=0;
 125         if(!(g_time&3)) Z_hit(&o,1,sm[i].o,HIT_FLAME);
 126       }
 127     }else{
 128       ox=sm[i].x;oy=sm[i].y;
 129       sm[i].xv=Z_dec(sm[i].xv,20);
 130       sm[i].yv=Z_dec(sm[i].yv,20);
 131       sm[i].x+=sm[i].xv;sm[i].y+=sm[i].yv;
 132       if(!Z_canfit(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 133         sm[i].x=ox;sm[i].y=oy;
 134       }else if(Z_inwater(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 135         sm[i].x=ox;sm[i].y=oy;
 136       }
 137     }
 138     --sm[i].t;
 139   }
 140 }
 141
 142 void SMK_add(int x,int y,int xv,int yv,byte t,byte s,short o) {
 143   int i;
 144
 145   if(!Z_canfit(x>>8,(y>>8)+3,3,7)) return;
 146   if(Z_inwater(x>>8,(y>>8)+3,3,7)) {FX_bubble(x>>8,y>>8,xv,yv,1);return;}
 147   i=lsm;
 148   sm[i].x=x;sm[i].y=y;
 149   sm[i].xv=xv;sm[i].yv=yv;
 150   sm[i].t=t;sm[i].s=s;
 151   sm[i].o=o;
 152   inclast();
 153 }
 154
 155 void SMK_gas(int x0,int y0,int xr,int yr,int xv,int yv,int k) {
 156   int i,x,y;
 157   static int sxv,syv;
 158
 159   xv=-xv;yv=-yv;
 160   sxv=xv*k;syv=yv*k;
 161   k=max(abs(xv),abs(yv));
 162   if(!k) return;
 163   for(i=0;i<=k;i+=3) {
 164     x=((xv*i/k+x0)<<8)+sxr[sr_r]*xr;
 165     y=((yv*i/k+y0)<<8)+syr[sr_r]*yr;
 166     if(++sr_r>=MAXSR) sr_r=0;
 167     SMK_add(x,y,sxv,syv,SMSN*3,0,-3);
 168   }
 169 }
 170
 171 void SMK_flame(int x0,int y0,int ox,int oy,int xr,int yr,int xv,int yv,int k,int o) {
 172   int i,x,y;
 173   static int sxv,syv;
 174
 175   sxv=xv*k;syv=yv*k;
 176   xv=xv-(ox<<8);yv=yv-(oy<<8);
 177   k=max(abs(xv),abs(yv));
 178   if(!k) return;
 179   if(!burntm) burntm=Z_sound(burnsnd,128);
 180   for(i=0;i<=k;i+=200) {
 181     x=xv*i/k+(x0<<8)+sxr[sr_r]*xr;
 182     y=yv*i/k+(y0<<8)+syr[sr_r]*yr;
 183     if(++sr_r>=MAXSR) sr_r=0;
 184     SMK_add(x,y,sxv,syv,FLSN,1,o);
 185   }
 186 }