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C/C++ Source or Header  |  1987-10-28  |  11KB  |  146 lines
  1.  
  2. /* (4,3) linear cellular automaton    */
  3. /*                    */
  4. /* Reference:                */
  5. /*                    */
  6. /*    Kenneth E. Perry            */
  7. /*    Abstract Mathematical Art        */
  8. /*    BYTE                */
  9. /*    December, 1986            */
  10. /*    pages 181-192            */
  11.  
  12. /*    Copyright (C) 1987        */
  13. /*    Harold V. McIntosh        */
  14. /*    Gerardo Cisneros S.        */
  15.  
  16. /* G. Cisneros, 4.3.87 */
  17. /* 10 April 1987 - Adapted for second neighbors [HVM] */
  18. /* 25 April 1987 - Collection of sample rules [HVM] */
  19. /* 26 April 1987 - Multiple menus [HVM] */
  20. /* 28 April 1987 - version for XVI Feria de Puebla [HVM] */
  21. /* 23 May 1987 - adapted for (4,3) [HVM] */
  22.  
  23. # include <bdos.h>
  24.  
  25. # define COLGRAF     4  /* graph resolution */
  26. # define T80X25      3  /* text resolution */
  27. # define WHCYMAG     1  /* color quad for normal screen */
  28. # define AL        320  /* array length (screen width) */
  29. # define DS        22  /* number of distinct sums */
  30. # define NX         18    /* number of sample rules */
  31.  
  32. char xrule[] =
  33.  
  34.     "0000002311131003311110"  /* class iv green edge */
  35.     "0000011112232212000000"  /* class iv stills */
  36.     "0000011212031312213203"  /* gradual breakdown */
  37.     "0000011212323121001200"  /* cycles */
  38.     "0000012133331121000000"  /* interesting background */
  39.  
  40.     "0000013121031030323210"  /* long lasting */
  41.     "0000013201102233120133"  /* */
  42.     "0000021230011320000000"  /* nice gliders & 2-sided cycles */
  43.     "0000101112332221001003"  /* 2's want to grow */
  44.     "0001101112302221001333"  /* red sea */
  45.  
  46.     "0001101112302221001333"  /* */
  47.     "0010020103132231021003"  /* class iv */
  48.     "0003233200313222310200"  /* almost class iv */
  49.     "0100011112232212000000"  /* class iv stills */
  50.     "1001003111003132203010"  /* */
  51.  
  52.     "1300320111220222313133"  /* speckled */
  53.     "3101123221102332133320"  /* mottled */
  54.     "3103310311333113301220"  /* black dots and green bars */
  55.  
  56.     ;
  57.  
  58. char  xx[4], rule[DS+1];
  59. int   arule[DS], arr1[AL], arr2[AL];
  60.  
  61. main()
  62. {
  63. int c, i, jj, n;
  64. int  more = 'r';
  65.  
  66.     videopalette(WHCYMAG);                /* white/cyan/magenta */
  67.  
  68.     tuto();
  69.     while (!kbdst()) jj=rand();                /* wait for keypress */
  70.     c=kbdin();                        /* ignore it */
  71.     jj=rand()%NX;
  72.     for (i=0; i<DS; i++) rule[i] = xrule[DS*jj+i];    /* random sample rule */
  73.     rule[DS]=0;
  74.     for (i=0; i<AL; i++) {                /* random initial array */
  75.     if (i%4 == 0) c=rand();
  76.     arr1[i]=c&3; c>>=2;};
  77.     videomode(T80X25);
  78.     videoscroll(3,0,4,71,0,3);                /* menu on blue background */
  79.     videoscroll(16,0,21,71,0,3);
  80.     xmenu(jj+1);                    /* show initial rule */
  81.  
  82.     while (more!='n') {                    /* execute multiple runs */
  83.     rmenu();
  84.     lmenu();
  85.     while (0<1) {                    /* set up one run */
  86.     c=kbdin();
  87.     if (c=='g') break;                    /* go draw graph */
  88.     if (c=='q') more='n';                /* quit for good */
  89.     if (more=='n') break;
  90.     switch (c) {
  91.         case 'r':                    /* edit rule */    
  92.         xblnk();
  93.         edrule();
  94.         videocursor(0,3,0);
  95.         rmenu();
  96.         break;
  97.         case 'l':                    /* edit cell string */
  98.         xblnk();
  99.         edline();
  100.         videocursor(0,3,0);
  101.         lmenu();
  102.         break;
  103.         case '#':                    /* read stored rule */
  104.         xmenu(NX);
  105.         n=DS*((i=lim(1,numin(0),NX))-1);
  106.         xmenu(i);
  107.         for (i=0; i<DS; i++) rule[i] = xrule[n+i];
  108.         rmenu();
  109.             break;
  110.         case 'u':
  111.         xblnk();
  112.         for (i=0; i<AL; i++) arr1[i]=0;
  113.         arr1[AL/4]=1;
  114.             arr1[AL/2]=2;
  115.             arr1[(3*AL)/4]=3;
  116.         lmenu();
  117.             break;
  118.     case 'x':                    /* random rule */
  119.         xblnk();
  120.             for (i=0; i<DS; i++) {
  121.             if (i%4 == 0) c = rand();
  122.             rule[i] = '0'+(c & 3);
  123.             c >>= 2;
  124.             };
  125.         rmenu();
  126.         break;
  127.     case 'y':                    /* random line */
  128.         xblnk();
  129.         for (i=0; i<AL; i++) {
  130.             if (i%4 == 0) c = rand();
  131.             arr1[i] = c & 3;
  132.             c >>= 2;
  133.             };
  134.             lmenu();
  135.         break;
  136.         default: break;
  137.         };
  138.     };
  139.     if (more=='n') break;
  140.     do {
  141.     evolve(rule);
  142.     videocursor(0,0,0);
  143.     scrstr("More?");
  144.     videocursor(0,0,30);
  145.     scrstr("y/n/cr");
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