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   for (i = n = 0; i < MAXDOT; ++i) {
  64     if (dot[i].t) {
  65       ++n;
  66     }
  67   }
  68   myfwrite32(n, h);
  69   for (i = 0; i < MAXDOT; ++i) {
  70     if (dot[i].t) {
  71       myfwrite32(dot[i].o.x, h);
  72       myfwrite32(dot[i].o.y, h);
  73       myfwrite32(dot[i].o.xv, h);
  74       myfwrite32(dot[i].o.yv, h);
  75       myfwrite32(dot[i].o.vx, h);
  76       myfwrite32(dot[i].o.vy, h);
  77       myfwrite32(dot[i].o.r, h);
  78       myfwrite32(dot[i].o.h, h);
  79       myfwrite8(dot[i].c, h);
  80       myfwrite8(dot[i].t, h);
  81     }
  82   }
  83 }
  84
  85 void DOT_loadgame (FILE *h) {
  86   int i, n;
  87   myfread32(&n, h);
  88   for (i = 0; i < n; i++) {
  89     myfread32(&dot[i].o.x, h);
  90     myfread32(&dot[i].o.y, h);
  91     myfread32(&dot[i].o.xv, h);
  92     myfread32(&dot[i].o.yv, h);
  93     myfread32(&dot[i].o.vx, h);
  94     myfread32(&dot[i].o.vy, h);
  95     myfread32(&dot[i].o.r, h);
  96     myfread32(&dot[i].o.h, h);
  97     myfread8(&dot[i].c, h);
  98     myfread8(&dot[i].t, h);
  99   }
 100 }
 101
 102 void DOT_init(void) {
 103   int i;
 104
 105   for(i=0;i<MAXDOT;++i) {dot[i].t=0;dot[i].o.r=0;dot[i].o.h=1;}
 106   ldot=0;
 107 }
 108
 109 static void incldot(void) {
 110   if(++ldot>=MAXDOT) ldot=0;
 111 }
 112
 113 void DOT_alloc(void) {
 114   int i;
 115
 116   for(i=0;i<MAXINI;++i) {
 117         bl_ini[i].xv=myrand(BL_XV*2+1)-BL_XV;
 118         bl_ini[i].yv=-myrand(BL_YV);
 119         bl_ini[i].c=0xB0+myrand(16);
 120         bl_ini[i].t=myrand(BL_MAXT-BL_MINT+1)+BL_MINT;
 121         sp_ini[i].xv=myrand(SP_V*2+1)-SP_V;
 122         sp_ini[i].yv=myrand(SP_V*2+1)-SP_V;
 123         sp_ini[i].c=0xA0+myrand(6);
 124         sp_ini[i].t=myrand(SP_MAXT-SP_MINT+1)+SP_MINT;
 125   }
 126   for(i=0;i<MAXSR;++i) {
 127         sxr[i]=myrand(2*2+1)-2;
 128         syr[i]=myrand(2*2+1)-2;
 129   }
 130   bl_r=sp_r=sr_r=0;
 131 }
 132
 133 void DOT_act(void) {
 134   int i,s,xv,yv;
 135
 136   z_dot=1;
 137   for(i=0;i<MAXDOT;++i) if(dot[i].t) {
 138     xv=dot[i].o.xv+dot[i].o.vx;
 139     yv=dot[i].o.yv+dot[i].o.vy;
 140     s=Z_moveobj(&dot[i].o);
 141     if(dot[i].t<254) --dot[i].t;
 142     if(s&(Z_HITWATER|Z_FALLOUT)) {dot[i].t=0;continue;}
 143     if(s&Z_HITLAND) {
 144       if(!dot[i].o.xv) {
 145         if(yv>2) {
 146           if(!xv) dot[i].o.vx=(rand()&1)?-1:1;
 147           else dot[i].o.vx=Z_sign(dot[i].o.vx);
 148           if(rand()%yv==0) dot[i].o.vx*=2;
 149           dot[i].o.yv=yv-2;
 150         }
 151       }
 152       dot[i].o.xv=0;
 153       if(dot[i].t>4 && dot[i].t!=255) dot[i].t=4;
 154     }
 155     if(s&Z_HITWALL) {
 156       dot[i].o.vx=Z_sign(xv)*2;
 157       dot[i].o.yv=Z_sign(dot[i].o.yv);
 158       if(dot[i].o.yv>=0) if(rand()&3) --dot[i].o.yv;
 159       if(dot[i].o.yv>=0) if(rand()&1) --dot[i].o.yv;
 160     }
 161     if(s&Z_HITCEIL) {dot[i].o.xv=0;dot[i].o.yv=(myrand(100))?-2:0;}
 162   }
 163   z_dot=0;
 164 }
 165
 166 void DOT_draw(void) {
 167   int i;
 168
 169   for(i=0;i<MAXDOT;++i)
 170     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);
 171 }
 172
 173 void DOT_add(int x,int y,char xv,char yv,byte c,byte t) {
 174   int i;
 175
 176   if(!Z_canfit(x,y,0,1)) return;
 177   i=ldot;
 178   dot[i].o.x=x;dot[i].o.y=y;
 179   dot[i].o.xv=xv;dot[i].o.yv=yv;
 180   dot[i].c=c;dot[i].t=t;
 181   dot[i].o.vx=dot[i].o.vy=0;
 182   incldot();
 183 }
 184
 185 void DOT_blood(int x,int y,int xv,int yv,int n) {
 186   int i,k,dx,dy;
 187
 188   for(k=n;k;--k) {
 189     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 190     if(!Z_canfit(x,y,0,1)) continue;
 191     i=ldot;
 192         dot[i].o.x=dx;dot[i].o.y=dy;
 193         dot[i].o.xv=bl_ini[bl_r].xv+Z_dec(xv,3);
 194         dot[i].o.yv=bl_ini[bl_r].yv+Z_dec(yv,3)-3;
 195         dot[i].c=bl_ini[bl_r].c;
 196         dot[i].t=255;
 197         dot[i].o.vx=dot[i].o.vy=0;
 198         if(++bl_r>=MAXINI) bl_r=0;
 199         if(++sr_r>=MAXSR) sr_r=0;
 200     incldot();
 201   }
 202 }
 203
 204 void DOT_spark(int x,int y,int xv,int yv,int n) {
 205   int i,k,dx,dy;
 206
 207   for(k=n;k;--k) {
 208     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 209     if(!Z_canfit(x,y,0,1)) continue;
 210     i=ldot;
 211         dot[i].o.x=dx;dot[i].o.y=dy;
 212         dot[i].o.xv=sp_ini[sp_r].xv-xv/4;
 213         dot[i].o.yv=sp_ini[sp_r].yv-yv/4;
 214         dot[i].c=sp_ini[sp_r].c;
 215         dot[i].t=sp_ini[sp_r].t;
 216         dot[i].o.vx=dot[i].o.vy=0;
 217         if(++sp_r>=MAXINI) sp_r=0;
 218         if(++sr_r>=MAXSR) sr_r=0;
 219     incldot();
 220   }
 221 }
 222
 223 void DOT_water(int x,int y,int xv,int yv,int n,int c) {
 224   int i,k,dx,dy;
 225   static byte ct[3]={0xC0,0x70,0xB0};
 226
 227   if(c<0 || c>=3) return;
 228   c=ct[c];
 229   for(k=n;k;--k) {
 230     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 231     if(!Z_canfit(x,y,0,1)) continue;
 232     i=ldot;
 233         dot[i].o.x=dx;dot[i].o.y=dy;
 234         dot[i].o.xv=bl_ini[bl_r].xv-Z_dec(xv,3);
 235         dot[i].o.yv=bl_ini[bl_r].yv-abs(yv);
 236         dot[i].c=bl_ini[bl_r].c-0xB0+c;
 237         dot[i].t=254;
 238         dot[i].o.vx=dot[i].o.vy=0;
 239         if(++bl_r>=MAXINI) bl_r=0;
 240         if(++sr_r>=MAXSR) sr_r=0;
 241     incldot();
 242   }
 243 }