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 <stdlib.h>
  25 #include "vga.h"
  26 #include "view.h"
  27 #include "dots.h"
  28 #include "misc.h"
  29
  30 #define MAXINI 50
  31 #define MAXSR 20
  32
  33 #define BL_XV 4
  34 #define BL_YV 4
  35 #define BL_MINT 10
  36 #define BL_MAXT 14
  37
  38 #define SP_V 2
  39 #define SP_MINT 5
  40 #define SP_MAXT 7
  41
  42 extern byte z_dot;
  43
  44 #pragma pack(1)
  45 typedef struct{
  46   obj_t o;
  47   byte c,t;
  48 }dot_t;
  49 #pragma pack()
  50
  51 typedef struct{
  52   int xv,yv;
  53   byte c,t;
  54 }init_t;
  55
  56 static dot_t dot[MAXDOT];
  57 static init_t bl_ini[MAXINI],sp_ini[MAXINI];
  58 static int bl_r,sp_r,sr_r,sxr[MAXSR],syr[MAXSR];
  59 static int ldot;
  60
  61 void DOT_savegame(FILE* h) {
  62   int i,n;
  63
  64   for(i=n=0;i<MAXDOT;++i) if(dot[i].t) ++n;
  65   myfwrite(&n,1,4,h);
  66   for(i=0;i<MAXDOT;++i) if(dot[i].t) myfwrite(&dot[i],1,sizeof(dot_t),h);
  67 }
  68
  69 void DOT_loadgame(FILE* h) {
  70   int n;
  71
  72   myfread(&n,1,4,h);
  73   myfread(dot,1,n*sizeof(dot_t),h);
  74 }
  75
  76 void DOT_init(void) {
  77   int i;
  78
  79   for(i=0;i<MAXDOT;++i) {dot[i].t=0;dot[i].o.r=0;dot[i].o.h=1;}
  80   ldot=0;
  81 }
  82
  83 static void incldot(void) {
  84   if(++ldot>=MAXDOT) ldot=0;
  85 }
  86
  87 void DOT_alloc(void) {
  88   int i;
  89
  90   for(i=0;i<MAXINI;++i) {
  91         bl_ini[i].xv=myrand(BL_XV*2+1)-BL_XV;
  92         bl_ini[i].yv=-myrand(BL_YV);
  93         bl_ini[i].c=0xB0+myrand(16);
  94         bl_ini[i].t=myrand(BL_MAXT-BL_MINT+1)+BL_MINT;
  95         sp_ini[i].xv=myrand(SP_V*2+1)-SP_V;
  96         sp_ini[i].yv=myrand(SP_V*2+1)-SP_V;
  97         sp_ini[i].c=0xA0+myrand(6);
  98         sp_ini[i].t=myrand(SP_MAXT-SP_MINT+1)+SP_MINT;
  99   }
 100   for(i=0;i<MAXSR;++i) {
 101         sxr[i]=myrand(2*2+1)-2;
 102         syr[i]=myrand(2*2+1)-2;
 103   }
 104   bl_r=sp_r=sr_r=0;
 105 }
 106
 107 void DOT_act(void) {
 108   int i,s,xv,yv;
 109
 110   z_dot=1;
 111   for(i=0;i<MAXDOT;++i) if(dot[i].t) {
 112     xv=dot[i].o.xv+dot[i].o.vx;
 113     yv=dot[i].o.yv+dot[i].o.vy;
 114     s=Z_moveobj(&dot[i].o);
 115     if(dot[i].t<254) --dot[i].t;
 116     if(s&(Z_HITWATER|Z_FALLOUT)) {dot[i].t=0;continue;}
 117     if(s&Z_HITLAND) {
 118       if(!dot[i].o.xv) {
 119         if(yv>2) {
 120           if(!xv) dot[i].o.vx=(rand()&1)?-1:1;
 121           else dot[i].o.vx=Z_sign(dot[i].o.vx);
 122           if(rand()%yv==0) dot[i].o.vx*=2;
 123           dot[i].o.yv=yv-2;
 124         }
 125       }
 126       dot[i].o.xv=0;
 127       if(dot[i].t>4 && dot[i].t!=255) dot[i].t=4;
 128     }
 129     if(s&Z_HITWALL) {
 130       dot[i].o.vx=Z_sign(xv)*2;
 131       dot[i].o.yv=Z_sign(dot[i].o.yv);
 132       if(dot[i].o.yv>=0) if(rand()&3) --dot[i].o.yv;
 133       if(dot[i].o.yv>=0) if(rand()&1) --dot[i].o.yv;
 134     }
 135     if(s&Z_HITCEIL) {dot[i].o.xv=0;dot[i].o.yv=(myrand(100))?-2:0;}
 136   }
 137   z_dot=0;
 138 }
 139
 140 void DOT_draw(void) {
 141   int i;
 142
 143   for(i=0;i<MAXDOT;++i)
 144     if(dot[i].t) V_dot(dot[i].o.x-w_x+WD/2,dot[i].o.y-w_y+HT/2+1+w_o,dot[i].c);//if(dot[i].t) V_dot(dot[i].o.x-w_x+100,dot[i].o.y-w_y+50+w_o,dot[i].c);
 145 }
 146
 147 void DOT_add(int x,int y,char xv,char yv,byte c,byte t) {
 148   int i;
 149
 150   if(!Z_canfit(x,y,0,1)) return;
 151   i=ldot;
 152   dot[i].o.x=x;dot[i].o.y=y;
 153   dot[i].o.xv=xv;dot[i].o.yv=yv;
 154   dot[i].c=c;dot[i].t=t;
 155   dot[i].o.vx=dot[i].o.vy=0;
 156   incldot();
 157 }
 158
 159 void DOT_blood(int x,int y,int xv,int yv,int n) {
 160   int i,k,dx,dy;
 161
 162   for(k=n;k;--k) {
 163     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 164     if(!Z_canfit(x,y,0,1)) continue;
 165     i=ldot;
 166         dot[i].o.x=dx;dot[i].o.y=dy;
 167         dot[i].o.xv=bl_ini[bl_r].xv+Z_dec(xv,3);
 168         dot[i].o.yv=bl_ini[bl_r].yv+Z_dec(yv,3)-3;
 169         dot[i].c=bl_ini[bl_r].c;
 170         dot[i].t=255;
 171         dot[i].o.vx=dot[i].o.vy=0;
 172         if(++bl_r>=MAXINI) bl_r=0;
 173         if(++sr_r>=MAXSR) sr_r=0;
 174     incldot();
 175   }
 176 }
 177
 178 void DOT_spark(int x,int y,int xv,int yv,int n) {
 179   int i,k,dx,dy;
 180
 181   for(k=n;k;--k) {
 182     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 183     if(!Z_canfit(x,y,0,1)) continue;
 184     i=ldot;
 185         dot[i].o.x=dx;dot[i].o.y=dy;
 186         dot[i].o.xv=sp_ini[sp_r].xv-xv/4;
 187         dot[i].o.yv=sp_ini[sp_r].yv-yv/4;
 188         dot[i].c=sp_ini[sp_r].c;
 189         dot[i].t=sp_ini[sp_r].t;
 190         dot[i].o.vx=dot[i].o.vy=0;
 191         if(++sp_r>=MAXINI) sp_r=0;
 192         if(++sr_r>=MAXSR) sr_r=0;
 193     incldot();
 194   }
 195 }
 196
 197 void DOT_water(int x,int y,int xv,int yv,int n,int c) {
 198   int i,k,dx,dy;
 199   static byte ct[3]={0xC0,0x70,0xB0};
 200
 201   if(c<0 || c>=3) return;
 202   c=ct[c];
 203   for(k=n;k;--k) {
 204     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 205     if(!Z_canfit(x,y,0,1)) continue;
 206     i=ldot;
 207         dot[i].o.x=dx;dot[i].o.y=dy;
 208         dot[i].o.xv=bl_ini[bl_r].xv-Z_dec(xv,3);
 209         dot[i].o.yv=bl_ini[bl_r].yv-abs(yv);
 210         dot[i].c=bl_ini[bl_r].c-0xB0+c;
 211         dot[i].t=254;
 212         dot[i].o.vx=dot[i].o.vy=0;
 213         if(++bl_r>=MAXINI) bl_r=0;
 214         if(++sr_r>=MAXSR) sr_r=0;
 215     incldot();
 216   }
 217 }