src/items.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 "error.h"
  26 #include "view.h"
  27 #include "items.h"
  28 #include "fx.h"
  29 #include "player.h"
  30 #include "monster.h"
  31 #include "things.h"
  32 #include "misc.h"
  33 #include "map.h"
  34 #include "my.h"
  35 #include "files.h"
  36 #include "game.h"
  37 item_t it[MAXITEM];
  38
  39 static void *snd[4];
  40 static int tsndtm, rsndtm;
  41
  42 int itm_rtime = 1092;
  43
  44 void IT_alloc (void) {
  45   int i, j, n;
  46   static char nm[][6] = {
  47     "ITEMUP", "WPNUP", "GETPOW", "ITMBK"
  48   };
  49   for (i = 0; i < 4; ++i) {
  50     snd[i] = Z_getsnd(nm[i]);
  51   }
  52   for (i = 0; i < MAXITEM; ++i) {
  53     it[i].o.r = 10;
  54     it[i].o.h = 8;
  55   }
  56 }
  57
  58 void IT_init (void) {
  59   int i;
  60   for (i = 0; i < MAXITEM; ++i) {
  61     it[i].t = I_NONE;
  62     it[i].o.xv = 0;
  63     it[i].o.yv = 0;
  64     it[i].o.vx = 0;
  65     it[i].o.vy = 0;
  66   }
  67   tsndtm = 0;
  68   rsndtm = 0;
  69 }
  70
  71 static void takesnd (int t) {
  72   if(tsndtm) return;
  73   t&=0x7FFF;
  74   if(t<=I_CELP || (t>=I_BPACK && t<=I_BFG) || t==I_GUN2)
  75     {tsndtm=Z_sound(snd[1],128);return;}
  76   if(t==I_MEGA || t==I_INVL || t==I_SUPER)
  77     {tsndtm=Z_sound(snd[2],192);return;}
  78   tsndtm=Z_sound(snd[0], 255);
  79 }
  80
  81 void IT_act (void) {
  82   int i,j;
  83
  84   if(tsndtm) --tsndtm;
  85   if(rsndtm) --rsndtm;
  86   for(i=0;i<MAXITEM;++i) if(it[i].t)
  87     if(it[i].s<0) {
  88       if(++it[i].s==-8) {
  89                 FX_ifog(it[i].o.x,it[i].o.y);
  90                 if(!rsndtm) rsndtm=Z_sound(snd[3],128);
  91           }
  92         }else{
  93           switch(it[i].t) {
  94                 case I_ARM1: case I_ARM2:
  95                   if(++it[i].s>=18) it[i].s=0; break;
  96                 case I_MEGA: case I_INVL:
  97                 case I_SUPER: case I_RTORCH: case I_GTORCH: case I_BTORCH:
  98                   if(++it[i].s>=8) it[i].s=0; break;
  99                 case I_GOR1: case I_FCAN:
 100                   if(++it[i].s>=6) it[i].s=0; break;
 101       }
 102           if(it[i].t&0x8000) {
 103                 if((j=Z_moveobj(&it[i].o))&Z_FALLOUT) {it[i].t=0;continue;}
 104                 else if(j&Z_HITWATER) Z_splash(&it[i].o,it[i].o.r+it[i].o.h);
 105           }
 106       if(Z_overlap(&it[i].o,&pl1.o))
 107                 if(PL_give(&pl1,it[i].t&0x7FFF)) {
 108                   takesnd(it[i].t);
 109                   if(_2pl) if((it[i].t&0x7FFF)>=I_KEYR && (it[i].t&0x7FFF)<=I_KEYB) continue;
 110                   if(!(it[i].s=-itm_rtime) || (it[i].t&0x8000)) it[i].t=0;
 111                   continue;
 112                 }
 113           if(_2pl) if(Z_overlap(&it[i].o,&pl2.o))
 114                 if(PL_give(&pl2,it[i].t&0x7FFF)) {
 115                   takesnd(it[i].t);
 116                   if((it[i].t&0x7FFF)>=I_KEYR && (it[i].t&0x7FFF)<=I_KEYB) continue;
 117                   if(!(it[i].s=-itm_rtime) || (it[i].t&0x8000)) it[i].t=0;
 118                   continue;
 119                 }
 120         }
 121 }
 122
 123 void IT_spawn (int x,int y,int t) {
 124   int i;
 125
 126   for(i=0;i<MAXITEM;++i) if(!it[i].t) {
 127         it[i].t=t|0x8000;it[i].s=0;
 128     it[i].o.x=x;it[i].o.y=y;
 129     it[i].o.xv=it[i].o.yv=it[i].o.vx=it[i].o.vy=0;
 130     it[i].o.r=10;it[i].o.h=8;
 131     return;
 132   }
 133 }
 134
 135 void IT_drop_ammo (int t, int n, int x, int y) {
 136   static int an[8]={10,4,1,40,50,25,5,100};
 137   int a;
 138
 139 again:;
 140   for(a=an[t-I_CLIP];n>=a;n-=a)
 141         IT_spawn(x+myrand(3*2+1)-3,y-myrand(7),t);
 142   if(t>=I_AMMO) {t-=4;goto again;}
 143 }