src/dots.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 <stdio.h>
  25 #include <stdlib.h>
  26 #include "view.h"
  27 #include "dots.h"
  28 #include "misc.h"
  29 #include "my.h"
  30
  31 #define MAXINI 50
  32 #define MAXSR 20
  33
  34 #define BL_XV 4
  35 #define BL_YV 4
  36 #define BL_MINT 10
  37 #define BL_MAXT 14
  38
  39 #define SP_V 2
  40 #define SP_MINT 5
  41 #define SP_MAXT 7
  42
  43 typedef struct{
  44   int xv,yv;
  45   byte c,t;
  46 }init_t;
  47
  48 dot_t dot[MAXDOT];
  49
  50 static init_t bl_ini[MAXINI],sp_ini[MAXINI];
  51 static int bl_r,sp_r,sr_r,sxr[MAXSR],syr[MAXSR];
  52 static int ldot;
  53
  54 void DOT_init(void) {
  55   int i;
  56
  57   for(i=0;i<MAXDOT;++i) {dot[i].t=0;dot[i].o.r=0;dot[i].o.h=1;}
  58   ldot=0;
  59 }
  60
  61 static void incldot(void) {
  62   if(++ldot>=MAXDOT) ldot=0;
  63 }
  64
  65 void DOT_alloc(void) {
  66   int i;
  67
  68   for(i=0;i<MAXINI;++i) {
  69         bl_ini[i].xv=myrand(BL_XV*2+1)-BL_XV;
  70         bl_ini[i].yv=-myrand(BL_YV);
  71         bl_ini[i].c=0xB0+myrand(16);
  72         bl_ini[i].t=myrand(BL_MAXT-BL_MINT+1)+BL_MINT;
  73         sp_ini[i].xv=myrand(SP_V*2+1)-SP_V;
  74         sp_ini[i].yv=myrand(SP_V*2+1)-SP_V;
  75         sp_ini[i].c=0xA0+myrand(6);
  76         sp_ini[i].t=myrand(SP_MAXT-SP_MINT+1)+SP_MINT;
  77   }
  78   for(i=0;i<MAXSR;++i) {
  79         sxr[i]=myrand(2*2+1)-2;
  80         syr[i]=myrand(2*2+1)-2;
  81   }
  82   bl_r=sp_r=sr_r=0;
  83 }
  84
  85 void DOT_act(void) {
  86   int i,s,xv,yv;
  87
  88   z_dot=1;
  89   for(i=0;i<MAXDOT;++i) if(dot[i].t) {
  90     xv=dot[i].o.xv+dot[i].o.vx;
  91     yv=dot[i].o.yv+dot[i].o.vy;
  92     s=Z_moveobj(&dot[i].o);
  93     if(dot[i].t<254) --dot[i].t;
  94     if(s&(Z_HITWATER|Z_FALLOUT)) {dot[i].t=0;continue;}
  95     if(s&Z_HITLAND) {
  96       if(!dot[i].o.xv) {
  97         if(yv>2) {
  98           if(!xv) dot[i].o.vx=(rand()&1)?-1:1;
  99           else dot[i].o.vx=Z_sign(dot[i].o.vx);
 100           if(rand()%yv==0) dot[i].o.vx*=2;
 101           dot[i].o.yv=yv-2;
 102         }
 103       }
 104       dot[i].o.xv=0;
 105       if(dot[i].t>4 && dot[i].t!=255) dot[i].t=4;
 106     }
 107     if(s&Z_HITWALL) {
 108       dot[i].o.vx=Z_sign(xv)*2;
 109       dot[i].o.yv=Z_sign(dot[i].o.yv);
 110       if(dot[i].o.yv>=0) if(rand()&3) --dot[i].o.yv;
 111       if(dot[i].o.yv>=0) if(rand()&1) --dot[i].o.yv;
 112     }
 113     if(s&Z_HITCEIL) {dot[i].o.xv=0;dot[i].o.yv=(myrand(100))?-2:0;}
 114   }
 115   z_dot=0;
 116 }
 117
 118 void DOT_add(int x,int y,char xv,char yv,byte c,byte t) {
 119   int i;
 120
 121   if(!Z_canfit(x,y,0,1)) return;
 122   i=ldot;
 123   dot[i].o.x=x;dot[i].o.y=y;
 124   dot[i].o.xv=xv;dot[i].o.yv=yv;
 125   dot[i].c=c;dot[i].t=t;
 126   dot[i].o.vx=dot[i].o.vy=0;
 127   incldot();
 128 }
 129
 130 void DOT_blood(int x,int y,int xv,int yv,int n) {
 131   int i,k,dx,dy;
 132
 133   for(k=n;k;--k) {
 134     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 135     if(!Z_canfit(x,y,0,1)) continue;
 136     i=ldot;
 137         dot[i].o.x=dx;dot[i].o.y=dy;
 138         dot[i].o.xv=bl_ini[bl_r].xv+Z_dec(xv,3);
 139         dot[i].o.yv=bl_ini[bl_r].yv+Z_dec(yv,3)-3;
 140         dot[i].c=bl_ini[bl_r].c;
 141         dot[i].t=255;
 142         dot[i].o.vx=dot[i].o.vy=0;
 143         if(++bl_r>=MAXINI) bl_r=0;
 144         if(++sr_r>=MAXSR) sr_r=0;
 145     incldot();
 146   }
 147 }
 148
 149 void DOT_spark(int x,int y,int xv,int yv,int n) {
 150   int i,k,dx,dy;
 151
 152   for(k=n;k;--k) {
 153     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 154     if(!Z_canfit(x,y,0,1)) continue;
 155     i=ldot;
 156         dot[i].o.x=dx;dot[i].o.y=dy;
 157         dot[i].o.xv=sp_ini[sp_r].xv-xv/4;
 158         dot[i].o.yv=sp_ini[sp_r].yv-yv/4;
 159         dot[i].c=sp_ini[sp_r].c;
 160         dot[i].t=sp_ini[sp_r].t;
 161         dot[i].o.vx=dot[i].o.vy=0;
 162         if(++sp_r>=MAXINI) sp_r=0;
 163         if(++sr_r>=MAXSR) sr_r=0;
 164     incldot();
 165   }
 166 }
 167
 168 void DOT_water(int x,int y,int xv,int yv,int n,int c) {
 169   int i,k,dx,dy;
 170   static byte ct[3]={0xC0,0x70,0xB0};
 171
 172   if(c<0 || c>=3) return;
 173   c=ct[c];
 174   for(k=n;k;--k) {
 175     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 176     if(!Z_canfit(x,y,0,1)) continue;
 177     i=ldot;
 178         dot[i].o.x=dx;dot[i].o.y=dy;
 179         dot[i].o.xv=bl_ini[bl_r].xv-Z_dec(xv,3);
 180         dot[i].o.yv=bl_ini[bl_r].yv-abs(yv);
 181         dot[i].c=bl_ini[bl_r].c-0xB0+c;
 182         dot[i].t=254;
 183         dot[i].o.vx=dot[i].o.vy=0;
 184         if(++bl_r>=MAXINI) bl_r=0;
 185         if(++sr_r>=MAXSR) sr_r=0;
 186     incldot();
 187   }
 188 }