src/fx.c

   1 /*
   2    Copyright (C) Prikol Software 1996-1997
   3    Copyright (C) Aleksey Volynskov 1996-1997
   4
   5    This file is part of the Doom2D:Rembo project.
   6
   7    Doom2D:Rembo is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation.
  10
  11    Doom2D:Rembo is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, see <http://www.gnu.org/licenses/> or
  18    write to the Free Software Foundation, Inc.,
  19    51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  20 */
  21
  22 #include "glob.h"
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include "view.h"
  27 #include "fx.h"
  28 #include "misc.h"
  29 #include "my.h"
  30
  31 enum{NONE,TFOG,IFOG,BUBL};
  32
  33 fx_t fx[MAXFX];
  34
  35 static void *bsnd[2];
  36 static char bubsn;
  37 static int last;
  38
  39 //unsigned char fx_scr1[64000],fx_scr2[64000];
  40
  41 #define SINP 256
  42 #define SINPM (SINP-1)
  43 #define W (SINP/100)
  44
  45 static int stdsin[SINP]={
  46 #include "fx1sin.dat"
  47 };
  48 static int sintab[SINP];
  49
  50 static unsigned char dmap[32*32];
  51
  52 static int isin(int a) {
  53   return sintab[a&SINPM];
  54 }
  55
  56 static void setamp(int a) {
  57   int i;
  58
  59   for(i=0;i<SINP;++i) sintab[i]=stdsin[i]*a;
  60 }
  61
  62 /*
  63 void FX_trans1 (int t) {
  64   int x,y,u,v;
  65   static unsigned char k;
  66   unsigned p;
  67
  68   setamp(t);
  69   k=t;
  70   t*=W;
  71   for(y=0,p=0;y<200;++y)
  72     for(x=0;x<320;++x,++p) {
  73       if(dmap[(y&31)*32+(x&31)]>=k) {
  74         u=x+((isin(y+t))>>16);
  75         v=y+((isin(u+t))>>16);
  76         if(u<0 || u>=320 || v<0 || v>=200) scra[p]=0;
  77         else scra[p]=fx_scr1[v*320+u];
  78       }else scra[p]=fx_scr2[p];
  79     }
  80 }
  81 */
  82
  83 static void init_fx1sin(void) {
  84   int j,r,l,rr;
  85   unsigned i;
  86
  87   memset(dmap,0,32*32);
  88   for(i=1,rr=32*32;i<64;++i) {
  89     for(l=32*32/64;l;--l,--rr) {
  90       r=rand()%rr;
  91       for(j=0;r;--r,++j) {
  92         for(;dmap[j];++j);
  93       }
  94       for(;dmap[j];++j);
  95       dmap[j]=i;
  96     }
  97   }
  98 }
  99
 100 void FX_savegame (FILE *h) {
 101   int i, n;
 102   for (i = n = 0; i < MAXFX; ++i) {
 103     if (fx[i].t) {
 104       ++n;
 105     }
 106   }
 107   myfwrite32(n, h);
 108   for (i = 0; i < MAXFX; ++i) {
 109     if (fx[i].t) {
 110       myfwrite32(fx[i].x, h);
 111       myfwrite32(fx[i].y, h);
 112       myfwrite32(fx[i].xv, h);
 113       myfwrite32(fx[i].yv, h);
 114       myfwrite8(fx[i].t, h);
 115       myfwrite8(fx[i].s, h);
 116     }
 117   }
 118 }
 119
 120 void FX_loadgame (FILE *h) {
 121   int i, n;
 122   n = myfread32(h);
 123   for (i = 0; i < n; i++) {
 124     fx[i].x = myfread32(h);
 125     fx[i].y = myfread32(h);
 126     fx[i].xv = myfread32(h);
 127     fx[i].yv = myfread32(h);
 128     fx[i].t = myfread8(h);
 129     fx[i].s = myfread8(h);
 130   }
 131 }
 132
 133 void FX_alloc (void) {
 134   bsnd[0]=Z_getsnd("BUBL1");
 135   bsnd[1]=Z_getsnd("BUBL2");
 136   init_fx1sin();
 137 }
 138
 139 void FX_init (void) {
 140   int i;
 141
 142   for(i=0;i<MAXFX;++i) fx[i].t=0;
 143   bubsn=0;
 144   last=0;
 145 }
 146
 147 void FX_act (void) {
 148   int i;
 149   byte b;
 150
 151   bubsn=0;
 152   for(i=0;i<MAXFX;++i) switch(fx[i].t) {
 153     case TFOG:
 154       if(++fx[i].s>=20) fx[i].t=0;
 155       break;
 156     case IFOG:
 157       if(++fx[i].s>=10) fx[i].t=0;
 158       break;
 159     case BUBL:
 160       fx[i].yv-=5;
 161       fx[i].xv=Z_dec(fx[i].xv,20);
 162       fx[i].x+=fx[i].xv;
 163       fx[i].y+=fx[i].yv;
 164       if((b=fld[fx[i].y>>11][fx[i].x>>11]) < 5 || b>7) fx[i].t=0;
 165       break;
 166   }
 167 }
 168
 169 static int findfree (void) {
 170   int i;
 171
 172   for(i=0;i<MAXFX;++i) if(!fx[i].t) return i;
 173   for(i=0;i<MAXFX;++i) if(fx[i].t==IFOG) return i;
 174   if(++last>=MAXFX) last=0;
 175   return last;
 176 }
 177
 178 void FX_tfog (int x, int y) {
 179   int i;
 180
 181   i=findfree();
 182         fx[i].t=TFOG;fx[i].s=0;
 183         fx[i].x=x;fx[i].y=y;
 184 }
 185
 186 void FX_ifog (int x, int y) {
 187   int i;
 188
 189   i=findfree();
 190     fx[i].t=IFOG;fx[i].s=0;
 191     fx[i].x=x;fx[i].y=y;
 192 }
 193
 194 void FX_bubble (int x, int y, int xv, int yv, int n) {
 195   int i;
 196
 197   if(!bubsn) {Z_sound(bsnd[rand()&1],128);bubsn=1;}
 198   for(;n>0;--n) {
 199         i=findfree();
 200         fx[i].t=BUBL;fx[i].s=rand()&3;
 201         fx[i].x=(x<<8)+myrand(513)-256;fx[i].y=(y<<8)+myrand(513)-256;
 202         fx[i].xv=xv;fx[i].yv=yv-myrand(256)-768;
 203   }
 204 }