src/weapons.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 "view.h"
  26 #include "bmap.h"
  27 #include "dots.h"
  28 #include "smoke.h"
  29 #include "weapons.h"
  30 #include "misc.h"
  31
  32 extern int hit_xv,hit_yv;
  33
  34 void bfg_fly(int x,int y,int own);
  35
  36 enum{NONE=0,ROCKET,PLASMA,APLASMA,BALL1,BALL2,BALL7,BFGBALL,BFGHIT,
  37      MANF,REVF,FIRE};
  38
  39 #pragma pack(1)
  40 typedef struct{
  41   obj_t o;
  42   byte t,s;
  43   int own;
  44   short target;
  45 }weapon_t;
  46 #pragma pack()
  47
  48 static void *snd[14],*spr[49*2];
  49 static char sprd[49*2];
  50 static weapon_t wp[MAXWPN];
  51
  52 static void throw(int,int,int,int,int,int,int,int);
  53
  54 void WP_savegame(FILE* h) {
  55   int n;
  56
  57   for(n=MAXWPN;--n;) if(wp[n].t) break;
  58   ++n;myfwrite(&n,1,4,h);myfwrite(wp,1,n*sizeof(wp[0]),h);
  59 }
  60
  61 void WP_loadgame(FILE* h) {
  62   int n;
  63
  64   myfread(&n,1,4,h);myfread(wp,1,n*sizeof(wp[0]),h);
  65 }
  66
  67 void WP_alloc(void) {
  68   int i;
  69   static char nm[14][6]={
  70         "PISTOL",
  71         "SHOTGN",
  72         "DSHTGN",
  73         "RLAUNC",
  74         "RXPLOD",
  75         "PLASMA",
  76         "FIRSHT",
  77         "FIRXPL",
  78         "BAREXP",
  79         "PUNCH",
  80         "SAWHIT",
  81         "MGUN",
  82         "SPARK1",
  83         "SPARK2"
  84   };
  85
  86   for(i=0;i<4;++i) {
  87         spr[i*2]=Z_getspr("MISL",i,1,sprd+i*2);
  88         spr[i*2+1]=Z_getspr("MISL",i,2,sprd+i*2+1);
  89   }
  90   for(;i<6;++i) {
  91         spr[i*2]=Z_getspr("PLSS",i-4,1,sprd+i*2);
  92         spr[i*2+1]=Z_getspr("PLSS",i-4,2,sprd+i*2+1);
  93   }
  94   for(;i<11;++i) {
  95     spr[i*2]=Z_getspr("PLSE",i-6,1,sprd+i*2);
  96     spr[i*2+1]=Z_getspr("PLSE",i-6,2,sprd+i*2+1);
  97   }
  98   for(;i<13;++i) {
  99     spr[i*2]=Z_getspr("APLS",i-11,1,sprd+i*2);
 100     spr[i*2+1]=Z_getspr("APLS",i-11,2,sprd+i*2+1);
 101   }
 102   for(;i<18;++i) {
 103     spr[i*2]=Z_getspr("APBX",i-13,1,sprd+i*2);
 104     spr[i*2+1]=Z_getspr("APBX",i-13,2,sprd+i*2+1);
 105   }
 106   for(;i<20;++i) {
 107     spr[i*2]=Z_getspr("BFS1",i-18,1,sprd+i*2);
 108     spr[i*2+1]=Z_getspr("BFS1",i-18,2,sprd+i*2+1);
 109   }
 110   for(;i<26;++i) {
 111         spr[i*2]=Z_getspr("BFE1",i-20,1,sprd+i*2);
 112         spr[i*2+1]=Z_getspr("BFE1",i-20,2,sprd+i*2+1);
 113   }
 114   for(;i<30;++i) {
 115     spr[i*2]=Z_getspr("BFE2",i-26,1,sprd+i*2);
 116     spr[i*2+1]=Z_getspr("BFE2",i-26,2,sprd+i*2+1);
 117   }
 118   for(;i<32;++i) {
 119     spr[i*2]=Z_getspr("MISL",i-30+4,1,sprd+i*2);
 120     spr[i*2+1]=Z_getspr("MISL",i-30+4,2,sprd+i*2+1);
 121   }
 122   for(;i<37;++i) {
 123         spr[i*2]=Z_getspr("BAL1",i-32,1,sprd+i*2);
 124         spr[i*2+1]=Z_getspr("BAL1",i-32,2,sprd+i*2+1);
 125   }
 126   for(;i<42;++i) {
 127         spr[i*2]=Z_getspr("BAL7",i-37,1,sprd+i*2);
 128         spr[i*2+1]=Z_getspr("BAL7",i-37,2,sprd+i*2+1);
 129   }
 130   for(;i<47;++i) {
 131         spr[i*2]=Z_getspr("BAL2",i-42,1,sprd+i*2);
 132         spr[i*2+1]=Z_getspr("BAL2",i-42,2,sprd+i*2+1);
 133   }
 134   for(;i<49;++i) {
 135         spr[i*2]=Z_getspr("MANF",i-47,1,sprd+i*2);
 136         spr[i*2+1]=Z_getspr("MANF",i-47,2,sprd+i*2+1);
 137   }
 138   for(i=0;i<14;++i) snd[i]=Z_getsnd(nm[i]);
 139 }
 140
 141 void WP_init(void) {
 142   int i;
 143
 144   for(i=0;i<MAXWPN;++i) wp[i].t=NONE;
 145 }
 146
 147 void WP_act(void) {
 148   int i,st;
 149   static obj_t o;
 150
 151   for(i=0;i<MAXWPN;++i) if(wp[i].t) {
 152         if(wp[i].t==ROCKET || wp[i].t==REVF)
 153           SMK_gas(wp[i].o.x+Z_sign(wp[i].o.xv)*2,
 154             wp[i].o.y-wp[i].o.h/2,3,3,
 155             wp[i].o.xv+wp[i].o.vx,wp[i].o.yv+wp[i].o.vy,64
 156           );
 157         --wp[i].o.yv;st=Z_moveobj(&wp[i].o);
 158         if(st&Z_FALLOUT) {wp[i].t=0;continue;}
 159         if(st&Z_HITWATER) switch(wp[i].t) {
 160           case PLASMA: case APLASMA:
 161           case BFGBALL:
 162                 break;
 163           default:
 164                 Z_splash(&wp[i].o,wp[i].o.r+wp[i].o.h);break;
 165         }
 166         switch(wp[i].t) {
 167           case REVF:
 168                 if(Z_getobjpos(wp[i].target,&o))
 169                   throw(i,wp[i].o.x,wp[i].o.y-2,o.x+o.xv+o.vx,o.y+o.yv+o.vy,2,5,12);
 170           case ROCKET:
 171                 if(wp[i].s>=2) {if(++wp[i].s>=8) wp[i].t=0; break;}
 172                 if(st&Z_HITAIR) Z_set_speed(&wp[i].o,12);
 173                 if(st&(Z_HITWALL|Z_HITCEIL|Z_HITLAND)) {
 174                   wp[i].s=2;wp[i].o.xv=wp[i].o.yv=0;Z_sound(snd[4],128);
 175                   Z_explode(wp[i].o.x,wp[i].o.y,30,wp[i].own);break;}
 176                 else if(Z_hit(&wp[i].o,10,wp[i].own,HIT_SOME)) {
 177                   wp[i].s=2;wp[i].o.xv=wp[i].o.yv=0;Z_sound(snd[4],128);
 178                   Z_explode(wp[i].o.x,wp[i].o.y-wp[i].o.h/2,30,wp[i].own);break;}
 179                 bfg_fly(wp[i].o.x,wp[i].o.y-wp[i].o.h/2,wp[i].own);
 180                 break;
 181           case PLASMA:
 182           case APLASMA:
 183                 if(st&Z_INWATER) {
 184                   Z_sound(snd[12],128);
 185                   Z_water_trap(&wp[i].o);
 186                   Z_chktrap(1,10,wp[i].own,HIT_ELECTRO);
 187                   Z_untrap(5);
 188                   wp[i].t=0;break;
 189                 }
 190           case BALL1:
 191           case BALL7:
 192           case BALL2:
 193           case MANF:
 194                 if(wp[i].s>=2)
 195                   {if(++wp[i].s>=((wp[i].t==BALL1 || wp[i].t==BALL7 || wp[i].t==BALL2 || wp[i].t==MANF)?8:12)) wp[i].t=0; break;}
 196                 if(st&Z_HITAIR) Z_set_speed(&wp[i].o,16);
 197                 if(st&(Z_HITWALL|Z_HITCEIL|Z_HITLAND))
 198                   {wp[i].s=2;wp[i].o.xv=wp[i].o.yv=0;Z_sound(snd[7],128);break;}
 199                 else if(Z_hit(&wp[i].o,(wp[i].t==BALL7 || wp[i].t==MANF)?40:((wp[i].t==BALL2)?20:5),wp[i].own,HIT_SOME))
 200                   {wp[i].s=2;wp[i].o.xv=wp[i].o.yv=0;Z_sound(snd[7],128);break;}
 201                 wp[i].s^=1;break;
 202           case BFGBALL:
 203                 if(st&Z_INWATER) {
 204                   Z_sound(snd[8],40);Z_sound(snd[13],128);
 205                   Z_water_trap(&wp[i].o);
 206                   Z_chktrap(1,1000,wp[i].own,HIT_ELECTRO);
 207                   Z_untrap(5);
 208                   wp[i].t=0;break;
 209                 }
 210                 if(wp[i].s>=2) {if(++wp[i].s>=14) wp[i].t=0; break;}
 211                 else if(st&(Z_HITWALL|Z_HITCEIL|Z_HITLAND)) {
 212                   Z_bfg9000(wp[i].o.x,wp[i].o.y,wp[i].own);
 213                   wp[i].s=2;wp[i].o.xv=wp[i].o.yv=0;Z_sound(snd[8],128);break;}
 214                 else if(Z_hit(&wp[i].o,100,wp[i].own,HIT_BFG)) {
 215                   Z_bfg9000(wp[i].o.x,wp[i].o.y,wp[i].own);
 216                   wp[i].s=2;wp[i].o.xv=wp[i].o.yv=0;Z_sound(snd[8],128);break;}
 217                 bfg_fly(wp[i].o.x,wp[i].o.y-wp[i].o.h/2,wp[i].own);
 218                 wp[i].s^=1;break;
 219           case BFGHIT:
 220                 if(++wp[i].s>=8) wp[i].t=0;
 221                 break;
 222           default: break;
 223         }
 224   }
 225 }
 226
 227 void WP_draw(void) {
 228   int i,s,d,x,y;
 229
 230   for(i=0;i<MAXWPN;++i) {
 231     s=-1;d=0;
 232     switch(wp[i].t) {
 233       case NONE: default: break;
 234       case REVF:
 235       case ROCKET:
 236                 if((d=wp[i].s)<2) {
 237                   d=(wp[i].o.xv>0)?1:0;
 238                   x=abs(wp[i].o.xv);y=wp[i].o.yv;s=0;
 239                   if(y<0) {if(-y>=x) s=30;}
 240                   else if(y>0) if(y>=x/2) s=31;
 241                 }else {s=(d-2)/2+1;d=0;}
 242                 break;
 243           case MANF:
 244             if((s=wp[i].s)>=2) {s/=2;break;}
 245           case PLASMA:
 246           case APLASMA:
 247           case BALL1:
 248           case BALL7:
 249           case BALL2:
 250                 if((s=wp[i].s)>=2) s=s/2+1;
 251                 switch(wp[i].t) {
 252                   case PLASMA: s+=4;break;
 253                   case APLASMA: s+=11;break;
 254                   case BALL1: s+=32;break;
 255                   case BALL2: s+=42;break;
 256                   case BALL7: s+=37;d=(wp[i].o.xv>=0)?1:0;break;
 257                   case MANF: s+=47;d=(wp[i].o.xv>=0)?1:0;break;
 258                 }break;
 259           case BFGBALL:
 260                 if((s=wp[i].s)>=2) s=s/2+1;
 261                 s+=18;break;
 262           case BFGHIT:
 263                 s=wp[i].s/2+26;break;
 264     }
 265     if(s>=0) Z_drawspr(wp[i].o.x,wp[i].o.y,spr[s*2+d],sprd[s*2+d]);
 266   }
 267 }
 268
 269 void WP_gun(int x,int y,int xd,int yd,int o,int v) {
 270   register dword d,m;
 271   int sx,sy,lx,ly;
 272   dword xe,ye,s;
 273   byte f;
 274
 275   f=BM_MONSTER|BM_WALL;
 276   if(o!=-1) f|=BM_PLR1;
 277   if(o!=-2) f|=BM_PLR2;
 278   if((xd-=x)>0) sx=1;
 279   else if(xd<0) sx=-1;
 280   else sx=0;
 281   if((yd-=y)>0) sy=1;
 282   else if(yd<0) sy=-1;
 283   else sy=0;
 284   if(!xd && !yd) return;
 285   if((xd=abs(xd)) > (yd=abs(yd))) d=xd; else d=yd;
 286   hit_xv=xd*10/d*sx;
 287   hit_yv=yd*10/d*sy;
 288   xe=ye=0;
 289   lx=x;ly=y;
 290   for(;;) {
 291         if(x<0 || x>=FLDW*8 || y<0 || y>=FLDH*8) break;
 292         if(((m=bmap[y>>5][x>>5])&f)) {
 293           if(m&BM_WALL) if(fld[y>>3][x>>3]==1 || fld[y>>3][x>>3]==2) {
 294                 for(x=lx,y=ly,xe=ye=0;fld[y>>3][x>>3]!=1 && fld[y>>3][x>>3]!=2;) {
 295                   lx=x;ly=y;
 296                   if((xe+=xd)>=d) {xe-=d;x+=sx;}
 297                   if((ye+=yd)>=d) {ye-=d;y+=sy;}
 298                 }
 299                 DOT_spark(lx,ly,sx*10,sy*10,1);
 300                 break;
 301           }
 302           if(m&(BM_MONSTER|BM_PLR1|BM_PLR2)) if(Z_gunhit(x,y,o,sx*v,sy*v)) break;
 303           lx=x;ly=y;
 304           if((xe+=(xd<<3))>=d) {
 305                 x+=xe/d*sx;xe=xe%d;
 306           }
 307           if((ye+=(yd<<3))>=d) {
 308                 y+=ye/d*sy;ye=ye%d;
 309           }
 310         }else{
 311           if(sx==0) m=0;
 312           else{m=x&31;if(sx>0) m^=31; ++m;}
 313           if(sy==0) s=0;
 314           else{s=y&31;if(sy>0) s^=31; ++s;}
 315           if((s<m && s!=0) || m==0) m=s;
 316           lx=x;ly=y;
 317                 x+=(xd*m+xe)/d*sx;xe=(xd*m+xe)%d;
 318                 y+=(yd*m+ye)/d*sy;ye=(yd*m+ye)%d;
 319         }
 320   }
 321 }
 322
 323 void WP_punch(int x,int y,int d,int own) {
 324   obj_t o;
 325
 326   o.x=x;o.y=y;o.r=12;o.h=26;
 327   o.xv=o.yv=o.vx=o.vy=0;
 328   if(Z_hit(&o,d,own,HIT_SOME)) Z_sound(snd[9],128);
 329 }
 330
 331 int WP_chainsaw(int x,int y,int d,int own) {
 332   obj_t o;
 333
 334   o.x=x;o.y=y;o.r=12;o.h=26;
 335   o.xv=o.yv=o.vx=o.vy=0;
 336   if(Z_hit(&o,d,own,HIT_SOME)) return 1;
 337   return 0;
 338 }
 339
 340 static void throw(int i,int x,int y,int xd,int yd,int r,int h,int s) {
 341   int m;
 342
 343   wp[i].o.x=x;wp[i].o.y=y+h/2;
 344   yd-=y;xd-=x;
 345   if(!(m=max(abs(xd),abs(yd)))) m=1;
 346   wp[i].o.xv=xd*s/m;wp[i].o.yv=yd*s/m;
 347   wp[i].o.r=r;wp[i].o.h=h;
 348   wp[i].o.vx=wp[i].o.vy=0;
 349 }
 350
 351 void WP_rocket(int x,int y,int xd,int yd,int o) {
 352   int i;
 353
 354   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 355     Z_sound(snd[3],128);
 356     wp[i].t=ROCKET;wp[i].s=(xd>=x)?1:0;
 357         wp[i].own=o;
 358         throw(i,x,y,xd,yd,2,5,12);
 359         return;
 360   }
 361 }
 362
 363 void WP_revf(int x,int y,int xd,int yd,int o,int t) {
 364   int i;
 365
 366   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 367     Z_sound(snd[3],128);
 368     wp[i].t=REVF;wp[i].s=(xd>=x)?1:0;
 369         wp[i].own=o;wp[i].target=t;
 370         throw(i,x,y,xd,yd,2,5,12);
 371         return;
 372   }
 373 }
 374
 375 void WP_plasma(int x,int y,int xd,int yd,int o) {
 376   int i;
 377
 378   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 379     Z_sound(snd[5],64);
 380     wp[i].t=PLASMA;wp[i].s=0;
 381         wp[i].own=o;
 382         throw(i,x,y,xd,yd,2,5,16);
 383     return;
 384   }
 385 }
 386
 387 void WP_ball1(int x,int y,int xd,int yd,int o) {
 388   int i;
 389
 390   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 391         wp[i].t=BALL1;wp[i].s=0;
 392         wp[i].own=o;
 393         throw(i,x,y,xd,yd,2,5,16);
 394         return;
 395   }
 396 }
 397
 398 void WP_ball2(int x,int y,int xd,int yd,int o) {
 399   int i;
 400
 401   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 402         wp[i].t=BALL2;wp[i].s=0;
 403         wp[i].own=o;
 404         throw(i,x,y,xd,yd,2,5,16);
 405         return;
 406   }
 407 }
 408
 409 void WP_ball7(int x,int y,int xd,int yd,int o) {
 410   int i;
 411
 412   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 413         wp[i].t=BALL7;wp[i].s=0;
 414         wp[i].own=o;
 415         throw(i,x,y,xd,yd,2,5,16);
 416         return;
 417   }
 418 }
 419
 420 void WP_aplasma(int x,int y,int xd,int yd,int o) {
 421   int i;
 422
 423   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 424         Z_sound(snd[5],64);
 425         wp[i].t=APLASMA;wp[i].s=0;
 426         wp[i].own=o;
 427         throw(i,x,y,xd,yd,2,5,16);
 428         return;
 429   }
 430 }
 431
 432 void WP_manfire(int x,int y,int xd,int yd,int o) {
 433   int i;
 434
 435   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 436         Z_sound(snd[6],128);
 437         wp[i].t=MANF;wp[i].s=0;
 438         wp[i].own=o;
 439         throw(i,x,y,xd,yd,5,11,16);
 440         return;
 441   }
 442 }
 443
 444 void WP_bfgshot(int x,int y,int xd,int yd,int o) {
 445   int i;
 446
 447   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 448     wp[i].t=BFGBALL;wp[i].s=0;
 449         wp[i].own=o;
 450         throw(i,x,y,xd,yd,5,12,16);
 451         return;
 452   }
 453 }
 454
 455 void WP_bfghit(int x,int y,int o) {
 456   int i;
 457
 458   for(i=0;i<MAXWPN;++i) if(!wp[i].t) {
 459     wp[i].t=BFGHIT;wp[i].s=0;
 460     wp[i].o.x=x;wp[i].o.y=y;
 461     wp[i].o.xv=wp[i].o.yv=0;
 462     wp[i].o.r=0;wp[i].o.h=1;
 463     wp[i].o.vx=wp[i].o.vy=0;
 464     wp[i].own=o;
 465     return;
 466   }
 467 }
 468
 469 void WP_pistol(int x,int y,int xd,int yd,int o) {
 470   Z_sound(snd[0],96);
 471   WP_gun(x,y,xd,yd,o,1);
 472   if(g_dm) {
 473     WP_gun(x,y+1,xd,yd+1,o,1);
 474     WP_gun(x,y-1,xd,yd-1,o,1);
 475   }
 476 }
 477
 478 void WP_mgun(int x,int y,int xd,int yd,int o) {
 479   Z_sound(snd[11],128);
 480   WP_gun(x,y,xd,yd,o,1);
 481 }
 482
 483 void WP_shotgun(int x,int y,int xd,int yd,int o) {
 484   int i,j;
 485
 486   Z_sound(snd[1],128);
 487   for(i=0;i<10;++i) {
 488     j=myrand(4*2+1)-4;
 489     WP_gun(x,y+j,xd,yd+j,o,i&1);
 490   }
 491 }
 492
 493 void WP_dshotgun(int x,int y,int xd,int yd,int o) {
 494   int i,j;
 495
 496   Z_sound(snd[2],128);
 497   for(i=(g_dm)?25:20;i>=0;--i) {
 498     j=myrand(10*2+1)-10;
 499     WP_gun(x,y+j,xd,yd+j,o,(i%3)?0:1);
 500   }
 501 }
 502
 503 void WP_ognemet(int x,int y,int xd,int yd,int xv,int yv,int o) {
 504   int m;
 505
 506   m=abs(xd-x);if(!m) m=abs(yd-y);
 507   SMK_flame(x,y,xv,yv,2,2,(xd-x)*3000/m,(yd-y)*3000/m,1,o);
 508 }