williams missile command clone

[technosaurus]

here is the source code (obfuscated to protect the innocent)

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#include <X11/Xlib.h>
#include <unistd.h>
typedef long O; typedef struct                    { O b,f,u,s,c,a,t,e,d; } C;
Display *d; Window w; GC g; XEvent e;
char Q[] = "Level %d   Score %d", m[222];
#define N(r) (random()%(r))
#define U I[n++]=L[n]=l; n%=222
#define K c=-l.u; l=I[i]; l.t=0; c+=l.u
#define E l.e--&&!--L[l.e].d&&(L[l.e].t=3)
#define M(a,e,i,o) a[0]=e,(a[1]=i)&&XFillPolygon(d,w,g,(void*)a,o,1,1)
#define F return
#define R while(
#define Y if(l.t


                      O p                                           ,B,
                   D,A=6,Z                                         ,S=0,v=
                0,n=0,W=400                                       ,H=300,a[7]
              ={ 33,99, 165,                                     231,297,363} ;
            XGCValues G={ 6,0                                   ,~0L,0,1} ; short
           T[]={ 0,300,-20,0,4                                 ,-20,4,10,4,-5,4,5,
         4,-20,4,20,4,-5,4,5,4,                               -10,4,20},b[]={ 0,0,4,
        0,-4,4,-4,-4,4,-4,4,4} ;                             C L[222],I[222];dC(O x){
       M(T,a[x],H,12); } Ne(C l,O                           s) { l.f=l.a=1; l.b=l.u=s;
      l.t=16; l.e=0; U; } nL(O t,O                         a,O b,O x,O y,O s,O p){ C l;
     l.d=0; l.f=s; l.t=t; y-=l.c=b;                       l.e=t==2?x:p; x-=l.s=a;s=(x|1)
    %2*x; t=(y|1)%2*y; l.u=(a=s>t?s:                     t)>>9;l.a=(x<<9)/a;l.b=(y<<9)/a;
   U; } di(C I){ O p,q,r,s,i=222;C l;                   B=D=0; R i--){ l=L[i]; Y>7){ p=I.s
  -l.s>>9; q=I.c-l.c>>9; r=l.t==8?l.b:                 l.a; s=p*p+q*q; if(s<r*r||I.t==2&&s<
  26) F S+=10; s=(20<<9)/(s|1); B+=p*s;               D+=q*s; }} F 0; } hi(O x,O d){ O i=A;
 R i--&&(x<a[i]-d||x>a[i]+d)); F i; }      dL(){ O      c,r=0, i=222,h; C l; R i--){ l=L[i];
 Y){ r++;c=l.f; Y==3){c=l.u; l.t=0;     E; }R c--){--     l.u;h=l.c>>9; Y>7){XDrawArc(d,w,g,
(l.s>>9)-++l.a,h-l.a,l.a*2,l.a*2,0   ,90<<8); if(!l.u){    I[i].t-=8; l=I[i]; } } else Y==2)M
(b,l.s>>9,h,6); else XDrawPoint(d    ,w,g,(l.s+=l.a)>>9,    h=(l.c+=l.b)>>9); Y==4&&!l.u){ Ne
(l,20); K; } Y&&l.t<3&&(di(l)||h>    H)){ if(h>H&&(c=hi(    l.s>>9,25))>=0){ dC(c); a[c]=a[--
A]; }Ne(l,30); Y==1){ E;K; } else    c=l.t=0;} Y==1&&h<H    -75&&!N(p*77)){ do{ nL(1,l.s,l.c,
                                      N(W<<9),H<<9,1,i+
                                        1); I[i].d++;
                                           }R N(3)

                                        );         K;
                                       l.u=c; c=0; } Y
                                      ==2){ l.s+=l.a+B;
                                     l.a= (l.e-l.s)/((H+
                                    20-h)|1); l.c+=l.b+D;
                                   M(b,l.s>>9,l.c>>9,6); }
                                  } L[i]=l; } } F r; } J(){
                                 R A) { XFlush(d); v&&sleep(
                                3); Z=++v*10; p=50-v; v%2&&hi
                               ((a[A]=N(W-50)+25),50)<0 &&A++;
                              XClearWindow (d,w); for(B=0; B<A;
                             dC(B++)); R Z|dL()){ Z&&!N(p)&&(Z--
                            ,nL(1+!N(p),N(W<<9), 0,N(W<<9),H<<9,1
                           ,0)); usleep(p*200); XCheckMaskEvent(d,
                          4,&e)&&A&&--S&&nL(4,a[N(A)]<<9,H-10<<9,e.
                         xbutton.x<<9,e.xbutton.y<<9,5,0);}S+=A*100;
                             B=sprintf(m,Q,v,S); XDrawString(d,w
                                     ,g,W/3,H/2,m,B); } }

main ()
{
O i=2;
d=XOpenDisplay(0);
w=RootWindow(d,0);
R i--) XMapWindow(d,w=XCreateSimpleWindow(d,w,0,0,W,H,0,0,0));
XSelectInput(d,w,4|1<<15);
XMaskEvent(d,1<<15,&e);
g=XCreateGC(d,w,829,&G);
srandom(time(0));
J();
puts(m);
}