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 "files.h"
  27 #include "memory.h"
  28 #include "vga.h"
  29 #include "error.h"
  30 #include "keyb.h"
  31 #include "sound.h"
  32 #include "view.h"
  33 #include "dots.h"
  34 #include "misc.h"
  35
  36 #define MAXINI 50
  37 #define MAXSR 20
  38
  39 #define BL_XV 4
  40 #define BL_YV 4
  41 #define BL_MINT 10
  42 #define BL_MAXT 14
  43
  44 #define SP_V 2
  45 #define SP_MINT 5
  46 #define SP_MAXT 7
  47
  48 extern byte z_dot;
  49
  50 #pragma pack(1)
  51 typedef struct{
  52   obj_t o;
  53   byte c,t;
  54 }dot_t;
  55 #pragma pack()
  56
  57 typedef struct{
  58   int xv,yv;
  59   byte c,t;
  60 }init_t;
  61
  62 static dot_t dot[MAXDOT];
  63 static init_t bl_ini[MAXINI],sp_ini[MAXINI];
  64 static int bl_r,sp_r,sr_r,sxr[MAXSR],syr[MAXSR];
  65 static int ldot;
  66
  67 void DOT_savegame(FILE* h) {
  68   int i,n;
  69
  70   for(i=n=0;i<MAXDOT;++i) if(dot[i].t) ++n;
  71   myfwrite(&n,1,4,h);
  72   for(i=0;i<MAXDOT;++i) if(dot[i].t) myfwrite(&dot[i],1,sizeof(dot_t),h);
  73 }
  74
  75 void DOT_loadgame(FILE* h) {
  76   int n;
  77
  78   myfread(&n,1,4,h);
  79   myfread(dot,1,n*sizeof(dot_t),h);
  80 }
  81
  82 void DOT_init(void) {
  83   int i;
  84
  85   for(i=0;i<MAXDOT;++i) {dot[i].t=0;dot[i].o.r=0;dot[i].o.h=1;}
  86   ldot=0;
  87 }
  88
  89 static void incldot(void) {
  90   if(++ldot>=MAXDOT) ldot=0;
  91 }
  92
  93 void DOT_alloc(void) {
  94   int i;
  95
  96   for(i=0;i<MAXINI;++i) {
  97         bl_ini[i].xv=myrand(BL_XV*2+1)-BL_XV;
  98         bl_ini[i].yv=-myrand(BL_YV);
  99         bl_ini[i].c=0xB0+myrand(16);
 100         bl_ini[i].t=myrand(BL_MAXT-BL_MINT+1)+BL_MINT;
 101         sp_ini[i].xv=myrand(SP_V*2+1)-SP_V;
 102         sp_ini[i].yv=myrand(SP_V*2+1)-SP_V;
 103         sp_ini[i].c=0xA0+myrand(6);
 104         sp_ini[i].t=myrand(SP_MAXT-SP_MINT+1)+SP_MINT;
 105   }
 106   for(i=0;i<MAXSR;++i) {
 107         sxr[i]=myrand(2*2+1)-2;
 108         syr[i]=myrand(2*2+1)-2;
 109   }
 110   bl_r=sp_r=sr_r=0;
 111 }
 112
 113 void DOT_act(void) {
 114   int i,s,xv,yv;
 115
 116   z_dot=1;
 117   for(i=0;i<MAXDOT;++i) if(dot[i].t) {
 118     xv=dot[i].o.xv+dot[i].o.vx;
 119     yv=dot[i].o.yv+dot[i].o.vy;
 120     s=Z_moveobj(&dot[i].o);
 121     if(dot[i].t<254) --dot[i].t;
 122     if(s&(Z_HITWATER|Z_FALLOUT)) {dot[i].t=0;continue;}
 123     if(s&Z_HITLAND) {
 124       if(!dot[i].o.xv) {
 125         if(yv>2) {
 126           if(!xv) dot[i].o.vx=(rand()&1)?-1:1;
 127           else dot[i].o.vx=Z_sign(dot[i].o.vx);
 128           if(rand()%yv==0) dot[i].o.vx*=2;
 129           dot[i].o.yv=yv-2;
 130         }
 131       }
 132       dot[i].o.xv=0;
 133       if(dot[i].t>4 && dot[i].t!=255) dot[i].t=4;
 134     }
 135     if(s&Z_HITWALL) {
 136       dot[i].o.vx=Z_sign(xv)*2;
 137       dot[i].o.yv=Z_sign(dot[i].o.yv);
 138       if(dot[i].o.yv>=0) if(rand()&3) --dot[i].o.yv;
 139       if(dot[i].o.yv>=0) if(rand()&1) --dot[i].o.yv;
 140     }
 141     if(s&Z_HITCEIL) {dot[i].o.xv=0;dot[i].o.yv=(myrand(100))?-2:0;}
 142   }
 143   z_dot=0;
 144 }
 145
 146 void DOT_draw(void) {
 147   int i;
 148
 149   for(i=0;i<MAXDOT;++i)
 150     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);
 151 }
 152
 153 void DOT_add(int x,int y,char xv,char yv,byte c,byte t) {
 154   int i;
 155
 156   if(!Z_canfit(x,y,0,1)) return;
 157   i=ldot;
 158   dot[i].o.x=x;dot[i].o.y=y;
 159   dot[i].o.xv=xv;dot[i].o.yv=yv;
 160   dot[i].c=c;dot[i].t=t;
 161   dot[i].o.vx=dot[i].o.vy=0;
 162   incldot();
 163 }
 164
 165 void DOT_blood(int x,int y,int xv,int yv,int n) {
 166   int i,k,dx,dy;
 167
 168   for(k=n;k;--k) {
 169     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 170     if(!Z_canfit(x,y,0,1)) continue;
 171     i=ldot;
 172         dot[i].o.x=dx;dot[i].o.y=dy;
 173         dot[i].o.xv=bl_ini[bl_r].xv+Z_dec(xv,3);
 174         dot[i].o.yv=bl_ini[bl_r].yv+Z_dec(yv,3)-3;
 175         dot[i].c=bl_ini[bl_r].c;
 176         dot[i].t=255;
 177         dot[i].o.vx=dot[i].o.vy=0;
 178         if(++bl_r>=MAXINI) bl_r=0;
 179         if(++sr_r>=MAXSR) sr_r=0;
 180     incldot();
 181   }
 182 }
 183
 184 void DOT_spark(int x,int y,int xv,int yv,int n) {
 185   int i,k,dx,dy;
 186
 187   for(k=n;k;--k) {
 188     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 189     if(!Z_canfit(x,y,0,1)) continue;
 190     i=ldot;
 191         dot[i].o.x=dx;dot[i].o.y=dy;
 192         dot[i].o.xv=sp_ini[sp_r].xv-xv/4;
 193         dot[i].o.yv=sp_ini[sp_r].yv-yv/4;
 194         dot[i].c=sp_ini[sp_r].c;
 195         dot[i].t=sp_ini[sp_r].t;
 196         dot[i].o.vx=dot[i].o.vy=0;
 197         if(++sp_r>=MAXINI) sp_r=0;
 198         if(++sr_r>=MAXSR) sr_r=0;
 199     incldot();
 200   }
 201 }
 202
 203 void DOT_water(int x,int y,int xv,int yv,int n,int c) {
 204   int i,k,dx,dy;
 205   static byte ct[3]={0xC0,0x70,0xB0};
 206
 207   if(c<0 || c>=3) return;
 208   c=ct[c];
 209   for(k=n;k;--k) {
 210     dx=x+sxr[sr_r];dy=y+syr[sr_r];
 211     if(!Z_canfit(x,y,0,1)) continue;
 212     i=ldot;
 213         dot[i].o.x=dx;dot[i].o.y=dy;
 214         dot[i].o.xv=bl_ini[bl_r].xv-Z_dec(xv,3);
 215         dot[i].o.yv=bl_ini[bl_r].yv-abs(yv);
 216         dot[i].c=bl_ini[bl_r].c-0xB0+c;
 217         dot[i].t=254;
 218         dot[i].o.vx=dot[i].o.vy=0;
 219         if(++bl_r>=MAXINI) bl_r=0;
 220         if(++sr_r>=MAXSR) sr_r=0;
 221     incldot();
 222   }
 223 }