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 "vga.h"
  26 #include "view.h"
  27 #include "smoke.h"
  28 #include "fx.h"
  29 #include "misc.h"
  30
  31 #define MAXSR 20
  32
  33 #define SMSN 10
  34 #define FLSN 8
  35
  36 #pragma pack(1)
  37 typedef struct{
  38   int x,y,xv,yv;
  39   byte t,s;
  40   short o;
  41 }smoke_t;
  42 #pragma pack()
  43
  44 static smoke_t sm[MAXSMOK];
  45 static int sr_r,sxr[MAXSR],syr[MAXSR];
  46 static int lsm;
  47
  48 static void *spr[SMSN],*fspr[FLSN];
  49 static void *burnsnd;
  50 static int burntm=0;
  51
  52 byte flametab[16]={
  53 0xBC,0xBA,0xB8,0xB6,0xB4,0xB2,0xB0,0xD5,0xD6,0xD7,0xA1,0xA0,0xE3,0xE2,0xE1,0xE0
  54 };
  55
  56 void SMK_savegame(FILE* h) {
  57   int i,n;
  58
  59   for(i=n=0;i<MAXSMOK;++i) if(sm[i].t) ++n;
  60   myfwrite(&n,1,4,h);
  61   for(i=0;i<MAXSMOK;++i) if(sm[i].t) myfwrite(&sm[i],1,sizeof(sm[0]),h);
  62 }
  63
  64 void SMK_loadgame(FILE* h) {
  65   int n;
  66
  67   myfread(&n,1,4,h);
  68   myfread(sm,1,n*sizeof(sm[0]),h);
  69 }
  70
  71 void SMK_init(void) {
  72   int i;
  73
  74   for(i=0;i<MAXSMOK;++i) {sm[i].t=0;}
  75   lsm=0;
  76   burntm=0;
  77 }
  78
  79 void SMK_alloc(void) {
  80   int i;
  81
  82   burnsnd=Z_getsnd("BURN");
  83   for(i=0;i<SMSN;++i) spr[i]=Z_getspr("SMOK",i,0,NULL);
  84   for(i=0;i<FLSN;++i) fspr[i]=Z_getspr("FLAM",i,0,NULL);
  85   for(i=0;i<MAXSR;++i) {
  86     sxr[i]=myrand(256*2+1)-256;
  87     syr[i]=myrand(256*2+1)-256;
  88   }
  89   sr_r=0;
  90 }
  91
  92 static void inclast(void) {
  93   if(++lsm>=MAXSMOK) lsm=0;
  94 }
  95
  96 void SMK_act(void) {
  97   int i,ox,oy;
  98   static obj_t o;
  99
 100   if(burntm) --burntm;
 101   for(i=0;i<MAXSMOK;++i) if(sm[i].t) {
 102     if(sm[i].s) {
 103       ox=sm[i].x;oy=sm[i].y;
 104       sm[i].xv=Z_dec(sm[i].xv,20);
 105       sm[i].yv=Z_dec(sm[i].yv,20);
 106       sm[i].x+=sm[i].xv/2;sm[i].y+=sm[i].yv/2;
 107       if(!Z_canfit(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 108         sm[i].x=ox;sm[i].y=oy;
 109       }else if(Z_inwater(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 110         sm[i].x=ox;sm[i].y=oy;
 111       }
 112       ox=sm[i].x;oy=sm[i].y;
 113       sm[i].x+=sm[i].xv/2;sm[i].y+=sm[i].yv/2;
 114       if(!Z_canfit(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 115         sm[i].x=ox;sm[i].y=oy;
 116       }else if(Z_inwater(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 117         sm[i].x=ox;sm[i].y=oy;
 118       }
 119       if(sm[i].o!=-3) {
 120         o.x=sm[i].x>>8;o.y=sm[i].y>>8;
 121         o.xv=sm[i].xv>>10;o.yv=sm[i].yv>>10;
 122         o.vx=o.vy=0;
 123         if(!(g_time&3)) Z_hit(&o,1,sm[i].o,HIT_FLAME);
 124       }
 125     }else{
 126       ox=sm[i].x;oy=sm[i].y;
 127       sm[i].xv=Z_dec(sm[i].xv,20);
 128       sm[i].yv=Z_dec(sm[i].yv,20);
 129       sm[i].x+=sm[i].xv;sm[i].y+=sm[i].yv;
 130       if(!Z_canfit(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 131         sm[i].x=ox;sm[i].y=oy;
 132       }else if(Z_inwater(sm[i].x>>8,(sm[i].y>>8)+3,3,7)) {
 133         sm[i].x=ox;sm[i].y=oy;
 134       }
 135     }
 136     --sm[i].t;
 137   }
 138 }
 139
 140 void SMK_draw(void) {
 141   int i,s;
 142
 143   for(i=0;i<MAXSMOK;++i) if(sm[i].t) switch(sm[i].s) {
 144     case 0:
 145       if((s=sm[i].t)>=(SMSN-1)*3) s=0; else s=SMSN-1-s/3;
 146       V_sprf((sm[i].x>>8)-w_x+WD/2,(sm[i].y>>8)-w_y+HT/2+1+w_o,spr[s],&smoke_sprf);//V_sprf((sm[i].x>>8)-w_x+100,(sm[i].y>>8)-w_y+50+w_o,spr[s],&smoke_sprf);
 147       break;
 148     case 1:
 149       if((s=sm[i].t)>=(FLSN-1)) s=0; else s=FLSN-1-s;
 150       V_sprf((sm[i].x>>8)-w_x+WD/2,(sm[i].y>>8)-w_y+HT/2+1+w_o,fspr[s],&flame_sprf);//V_sprf((sm[i].x>>8)-w_x+100,(sm[i].y>>8)-w_y+50+w_o,fspr[s],&flame_sprf);
 151       break;
 152   }
 153 }
 154
 155 void SMK_add(int x,int y,int xv,int yv,byte t,byte s,short o) {
 156   int i;
 157
 158   if(!Z_canfit(x>>8,(y>>8)+3,3,7)) return;
 159   if(Z_inwater(x>>8,(y>>8)+3,3,7)) {FX_bubble(x>>8,y>>8,xv,yv,1);return;}
 160   i=lsm;
 161   sm[i].x=x;sm[i].y=y;
 162   sm[i].xv=xv;sm[i].yv=yv;
 163   sm[i].t=t;sm[i].s=s;
 164   sm[i].o=o;
 165   inclast();
 166 }
 167
 168 void SMK_gas(int x0,int y0,int xr,int yr,int xv,int yv,int k) {
 169   int i,x,y;
 170   static int sxv,syv;
 171
 172   xv=-xv;yv=-yv;
 173   sxv=xv*k;syv=yv*k;
 174   k=max(abs(xv),abs(yv));
 175   if(!k) return;
 176   for(i=0;i<=k;i+=3) {
 177     x=((xv*i/k+x0)<<8)+sxr[sr_r]*xr;
 178     y=((yv*i/k+y0)<<8)+syr[sr_r]*yr;
 179     if(++sr_r>=MAXSR) sr_r=0;
 180     SMK_add(x,y,sxv,syv,SMSN*3,0,-3);
 181   }
 182 }
 183
 184 void SMK_flame(int x0,int y0,int ox,int oy,int xr,int yr,int xv,int yv,int k,int o) {
 185   int i,x,y;
 186   static int sxv,syv;
 187
 188   sxv=xv*k;syv=yv*k;
 189   xv=xv-(ox<<8);yv=yv-(oy<<8);
 190   k=max(abs(xv),abs(yv));
 191   if(!k) return;
 192   if(!burntm) burntm=Z_sound(burnsnd,128);
 193   for(i=0;i<=k;i+=200) {
 194     x=xv*i/k+(x0<<8)+sxr[sr_r]*xr;
 195     y=yv*i/k+(y0<<8)+syr[sr_r]*yr;
 196     if(++sr_r>=MAXSR) sr_r=0;
 197     SMK_add(x,y,sxv,syv,FLSN,1,o);
 198   }
 199 }