Home » Archimedes archive » Acorn User » AU 1997-05 B.adf » Regulars » StarInfo/clouds/Brown/c/inter

StarInfo/clouds/Brown/c/inter

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Archimedes archive » Acorn User » AU 1997-05 B.adf » Regulars
Filename: StarInfo/clouds/Brown/c/inter
Read OK:
File size: 10B1 bytes
Load address: 0000
Exec address: 0000
File contents
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#include "kernel.h"

#include "sat.h"
#include "mapfn.h"

#define GRID_SIZE 256

#define MIN(A,B) ((A)<(B) ? (A) : (B))
#define MAX(A,B) ((A)>(B) ? (A) : (B))
#define RNG(A,B,N) (MAX((A),MIN((B),(N))))

#define readloc(B,X,Y) (int)(B[(((Y)&0xff)*320)+((X)&0xff)])

void writeloc(char* base, int x, int y, int value)
{
  base[(y&0xff)*320+(x&0xff)]=RNG(0,255,value);
}

int main(void)
{
  int powsize, actsize, halfsize;
  register int xloop, yloop;
  char *screenbase;
  double root2=sqrt(2.0);
  char pal[3][16]={  202,202,202,202,
                     202,202,206,207,
                     249,250,251,255,
                     255,254,253,252,

                     20,21,22,23,
                     55,87,119,87,
                     55,23,31,151,
                     159,191,223,255,

                     8,9,10,11,
                     129,130,136,137,
                     138,139,138,137,
                     136,130,129,11        };
  char cols[16];
  int choice=-1, loop;
  int* map;
  int b;

  puts("Cloudmapper, � Julian Brown 1997");
  puts("");
  puts("Move mouse left and right to rotate view");
  puts("Hold down Select to move forwards");
  puts("Hold down Adjust to move backwards");
  puts("Click Menu a few times to quit");
  puts("");
  puts("Please select a palette:");
  puts("  1. Natural(ish)tic");
  puts("  2. Alien toxic chemical haze");
  puts("  3. Dark blue (late evening?)");

  while (choice<1 || choice>3) scanf("%d", &choice);

  for (loop=0; loop<16; loop++) cols[loop]=pal[choice-1][loop];

  srand(sat_timeop());

  sat_screenmode(13);
  vdustr(5,23,0,10,16,0,0,0,0,0,0,-1); /* turn off cursor */

  screenbase=(char*)sat_getscreenbase();

  /* fill an array with a sparse random grid */
  for (yloop=0; yloop<GRID_SIZE; yloop+=64)
    for (xloop=0; xloop<GRID_SIZE; xloop+=64)
      writeloc(screenbase, xloop, yloop, abs(rand()%256));

  /* interpolate sparse random grid into big smoothly interpolated grid */

  for (powsize=6; powsize>0; powsize--)
  {
    actsize=1<<powsize;
    halfsize=actsize/2;

    for (yloop=0; yloop<GRID_SIZE; yloop+=actsize)
    {
      for (xloop=0; xloop<GRID_SIZE; xloop+=actsize)
      {
        writeloc(screenbase, xloop+halfsize, yloop+halfsize,
         ((readloc(screenbase, xloop,         yloop)            +
          readloc(screenbase, xloop+actsize, yloop)            +
          readloc(screenbase, xloop+actsize, yloop+actsize)    +
          readloc(screenbase, xloop,         yloop+actsize))/4 +
          rand()%(int)(((float)actsize*root2)*16)-actsize*8));
      }
    }

    for (yloop=0; yloop<GRID_SIZE; yloop+=actsize)
    {
      for (xloop=0; xloop<GRID_SIZE; xloop+=actsize)
      {
        writeloc(screenbase, xloop+halfsize, yloop,
        (((readloc(screenbase, xloop, yloop)             +
          readloc(screenbase, xloop+actsize, yloop))/2) +
          rand()%(actsize*16)-actsize*8));
        writeloc(screenbase, xloop, yloop+halfsize,
        (((readloc(screenbase, xloop, yloop)             +
          readloc(screenbase, xloop, yloop+actsize))/2) +
          rand()%(actsize*16)-actsize*8));
      }
    }
  }

  for (xloop=0; xloop<GRID_SIZE; xloop++)
  {
    for (yloop=0; yloop<GRID_SIZE; yloop++)
    {
      int col=(readloc(screenbase, xloop, yloop)+rand()%16-8)/16;
      writeloc(screenbase, xloop, yloop, cols[RNG(0,15,col)]);
    }
  }

  map=malloc(81920);

  copy((int*)screenbase, map);

  do {
    static int x2=0,y2=0,x=0,y=0;
    static int time=0, otime=0;
    int a, cx, cy, speed;
    paramblock in;
    char oswordin[6]={3,128,2,0,2};

    otime=time;
    time=sat_timeop();
    speed=(time-otime)*2;

    sat_mouseop(&x2,&y2,&b);
    _kernel_osword(21,(int*)oswordin); /* mouse to 640,512 */
    x+=x2-640;
    y+=y2-512;

    a=-x/4;
    if (b==4) {
      cx+=(int)(speed*sin(a/57.2957795));
      cy+=(int)(speed*cos(a/57.2957795));
    }
    if (b==1) {
      cx-=(int)(speed*sin(a/57.2957795));
      cy-=(int)(speed*cos(a/57.2957795));
    }
    in.screenbase=(int*)screenbase;
    in.source=map;
    in.sin=(int)(sin(a/57.2957795)*2048.0);
    in.cos=(int)(cos(a/57.2957795)*2048.0);
    in.diffx=cx;
    in.diffz=cy;
    maptoceil(&in);
  } while (b!=2);

  return 0;
}
00000000  23 69 6e 63 6c 75 64 65  20 3c 73 74 64 69 6f 2e  |#include <stdio.|
00000010  68 3e 0a 23 69 6e 63 6c  75 64 65 20 3c 73 74 64  |h>.#include <std|
00000020  6c 69 62 2e 68 3e 0a 23  69 6e 63 6c 75 64 65 20  |lib.h>.#include |
00000030  3c 6d 61 74 68 2e 68 3e  0a 0a 23 69 6e 63 6c 75  |<math.h>..#inclu|
00000040  64 65 20 22 6b 65 72 6e  65 6c 2e 68 22 0a 0a 23  |de "kernel.h"..#|
00000050  69 6e 63 6c 75 64 65 20  22 73 61 74 2e 68 22 0a  |include "sat.h".|
00000060  23 69 6e 63 6c 75 64 65  20 22 6d 61 70 66 6e 2e  |#include "mapfn.|
00000070  68 22 0a 0a 23 64 65 66  69 6e 65 20 47 52 49 44  |h"..#define GRID|
00000080  5f 53 49 5a 45 20 32 35  36 0a 0a 23 64 65 66 69  |_SIZE 256..#defi|
00000090  6e 65 20 4d 49 4e 28 41  2c 42 29 20 28 28 41 29  |ne MIN(A,B) ((A)|
000000a0  3c 28 42 29 20 3f 20 28  41 29 20 3a 20 28 42 29  |<(B) ? (A) : (B)|
000000b0  29 0a 23 64 65 66 69 6e  65 20 4d 41 58 28 41 2c  |).#define MAX(A,|
000000c0  42 29 20 28 28 41 29 3e  28 42 29 20 3f 20 28 41  |B) ((A)>(B) ? (A|
000000d0  29 20 3a 20 28 42 29 29  0a 23 64 65 66 69 6e 65  |) : (B)).#define|
000000e0  20 52 4e 47 28 41 2c 42  2c 4e 29 20 28 4d 41 58  | RNG(A,B,N) (MAX|
000000f0  28 28 41 29 2c 4d 49 4e  28 28 42 29 2c 28 4e 29  |((A),MIN((B),(N)|
00000100  29 29 29 0a 0a 23 64 65  66 69 6e 65 20 72 65 61  |)))..#define rea|
00000110  64 6c 6f 63 28 42 2c 58  2c 59 29 20 28 69 6e 74  |dloc(B,X,Y) (int|
00000120  29 28 42 5b 28 28 28 59  29 26 30 78 66 66 29 2a  |)(B[(((Y)&0xff)*|
00000130  33 32 30 29 2b 28 28 58  29 26 30 78 66 66 29 5d  |320)+((X)&0xff)]|
00000140  29 0a 0a 76 6f 69 64 20  77 72 69 74 65 6c 6f 63  |)..void writeloc|
00000150  28 63 68 61 72 2a 20 62  61 73 65 2c 20 69 6e 74  |(char* base, int|
00000160  20 78 2c 20 69 6e 74 20  79 2c 20 69 6e 74 20 76  | x, int y, int v|
00000170  61 6c 75 65 29 0a 7b 0a  20 20 62 61 73 65 5b 28  |alue).{.  base[(|
00000180  79 26 30 78 66 66 29 2a  33 32 30 2b 28 78 26 30  |y&0xff)*320+(x&0|
00000190  78 66 66 29 5d 3d 52 4e  47 28 30 2c 32 35 35 2c  |xff)]=RNG(0,255,|
000001a0  76 61 6c 75 65 29 3b 0a  7d 0a 0a 69 6e 74 20 6d  |value);.}..int m|
000001b0  61 69 6e 28 76 6f 69 64  29 0a 7b 0a 20 20 69 6e  |ain(void).{.  in|
000001c0  74 20 70 6f 77 73 69 7a  65 2c 20 61 63 74 73 69  |t powsize, actsi|
000001d0  7a 65 2c 20 68 61 6c 66  73 69 7a 65 3b 0a 20 20  |ze, halfsize;.  |
000001e0  72 65 67 69 73 74 65 72  20 69 6e 74 20 78 6c 6f  |register int xlo|
000001f0  6f 70 2c 20 79 6c 6f 6f  70 3b 0a 20 20 63 68 61  |op, yloop;.  cha|
00000200  72 20 2a 73 63 72 65 65  6e 62 61 73 65 3b 0a 20  |r *screenbase;. |
00000210  20 64 6f 75 62 6c 65 20  72 6f 6f 74 32 3d 73 71  | double root2=sq|
00000220  72 74 28 32 2e 30 29 3b  0a 20 20 63 68 61 72 20  |rt(2.0);.  char |
00000230  70 61 6c 5b 33 5d 5b 31  36 5d 3d 7b 20 20 32 30  |pal[3][16]={  20|
00000240  32 2c 32 30 32 2c 32 30  32 2c 32 30 32 2c 0a 20  |2,202,202,202,. |
00000250  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000260  20 20 20 20 32 30 32 2c  32 30 32 2c 32 30 36 2c  |    202,202,206,|
00000270  32 30 37 2c 0a 20 20 20  20 20 20 20 20 20 20 20  |207,.           |
00000280  20 20 20 20 20 20 20 20  20 20 32 34 39 2c 32 35  |          249,25|
00000290  30 2c 32 35 31 2c 32 35  35 2c 0a 20 20 20 20 20  |0,251,255,.     |
000002a0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
000002b0  32 35 35 2c 32 35 34 2c  32 35 33 2c 32 35 32 2c  |255,254,253,252,|
000002c0  0a 0a 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |..              |
000002d0  20 20 20 20 20 20 20 32  30 2c 32 31 2c 32 32 2c  |       20,21,22,|
000002e0  32 33 2c 0a 20 20 20 20  20 20 20 20 20 20 20 20  |23,.            |
000002f0  20 20 20 20 20 20 20 20  20 35 35 2c 38 37 2c 31  |         55,87,1|
00000300  31 39 2c 38 37 2c 0a 20  20 20 20 20 20 20 20 20  |19,87,.         |
00000310  20 20 20 20 20 20 20 20  20 20 20 20 35 35 2c 32  |            55,2|
00000320  33 2c 33 31 2c 31 35 31  2c 0a 20 20 20 20 20 20  |3,31,151,.      |
00000330  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 31  |               1|
00000340  35 39 2c 31 39 31 2c 32  32 33 2c 32 35 35 2c 0a  |59,191,223,255,.|
00000350  0a 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |.               |
00000360  20 20 20 20 20 20 38 2c  39 2c 31 30 2c 31 31 2c  |      8,9,10,11,|
00000370  0a 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |.               |
00000380  20 20 20 20 20 20 31 32  39 2c 31 33 30 2c 31 33  |      129,130,13|
00000390  36 2c 31 33 37 2c 0a 20  20 20 20 20 20 20 20 20  |6,137,.         |
000003a0  20 20 20 20 20 20 20 20  20 20 20 20 31 33 38 2c  |            138,|
000003b0  31 33 39 2c 31 33 38 2c  31 33 37 2c 0a 20 20 20  |139,138,137,.   |
000003c0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
000003d0  20 20 31 33 36 2c 31 33  30 2c 31 32 39 2c 31 31  |  136,130,129,11|
000003e0  20 20 20 20 20 20 20 20  7d 3b 0a 20 20 63 68 61  |        };.  cha|
000003f0  72 20 63 6f 6c 73 5b 31  36 5d 3b 0a 20 20 69 6e  |r cols[16];.  in|
00000400  74 20 63 68 6f 69 63 65  3d 2d 31 2c 20 6c 6f 6f  |t choice=-1, loo|
00000410  70 3b 0a 20 20 69 6e 74  2a 20 6d 61 70 3b 0a 20  |p;.  int* map;. |
00000420  20 69 6e 74 20 62 3b 0a  0a 20 20 70 75 74 73 28  | int b;..  puts(|
00000430  22 43 6c 6f 75 64 6d 61  70 70 65 72 2c 20 a9 20  |"Cloudmapper, . |
00000440  4a 75 6c 69 61 6e 20 42  72 6f 77 6e 20 31 39 39  |Julian Brown 199|
00000450  37 22 29 3b 0a 20 20 70  75 74 73 28 22 22 29 3b  |7");.  puts("");|
00000460  0a 20 20 70 75 74 73 28  22 4d 6f 76 65 20 6d 6f  |.  puts("Move mo|
00000470  75 73 65 20 6c 65 66 74  20 61 6e 64 20 72 69 67  |use left and rig|
00000480  68 74 20 74 6f 20 72 6f  74 61 74 65 20 76 69 65  |ht to rotate vie|
00000490  77 22 29 3b 0a 20 20 70  75 74 73 28 22 48 6f 6c  |w");.  puts("Hol|
000004a0  64 20 64 6f 77 6e 20 53  65 6c 65 63 74 20 74 6f  |d down Select to|
000004b0  20 6d 6f 76 65 20 66 6f  72 77 61 72 64 73 22 29  | move forwards")|
000004c0  3b 0a 20 20 70 75 74 73  28 22 48 6f 6c 64 20 64  |;.  puts("Hold d|
000004d0  6f 77 6e 20 41 64 6a 75  73 74 20 74 6f 20 6d 6f  |own Adjust to mo|
000004e0  76 65 20 62 61 63 6b 77  61 72 64 73 22 29 3b 0a  |ve backwards");.|
000004f0  20 20 70 75 74 73 28 22  43 6c 69 63 6b 20 4d 65  |  puts("Click Me|
00000500  6e 75 20 61 20 66 65 77  20 74 69 6d 65 73 20 74  |nu a few times t|
00000510  6f 20 71 75 69 74 22 29  3b 0a 20 20 70 75 74 73  |o quit");.  puts|
00000520  28 22 22 29 3b 0a 20 20  70 75 74 73 28 22 50 6c  |("");.  puts("Pl|
00000530  65 61 73 65 20 73 65 6c  65 63 74 20 61 20 70 61  |ease select a pa|
00000540  6c 65 74 74 65 3a 22 29  3b 0a 20 20 70 75 74 73  |lette:");.  puts|
00000550  28 22 20 20 31 2e 20 4e  61 74 75 72 61 6c 28 69  |("  1. Natural(i|
00000560  73 68 29 74 69 63 22 29  3b 0a 20 20 70 75 74 73  |sh)tic");.  puts|
00000570  28 22 20 20 32 2e 20 41  6c 69 65 6e 20 74 6f 78  |("  2. Alien tox|
00000580  69 63 20 63 68 65 6d 69  63 61 6c 20 68 61 7a 65  |ic chemical haze|
00000590  22 29 3b 0a 20 20 70 75  74 73 28 22 20 20 33 2e  |");.  puts("  3.|
000005a0  20 44 61 72 6b 20 62 6c  75 65 20 28 6c 61 74 65  | Dark blue (late|
000005b0  20 65 76 65 6e 69 6e 67  3f 29 22 29 3b 0a 0a 20  | evening?)");.. |
000005c0  20 77 68 69 6c 65 20 28  63 68 6f 69 63 65 3c 31  | while (choice<1|
000005d0  20 7c 7c 20 63 68 6f 69  63 65 3e 33 29 20 73 63  | || choice>3) sc|
000005e0  61 6e 66 28 22 25 64 22  2c 20 26 63 68 6f 69 63  |anf("%d", &choic|
000005f0  65 29 3b 0a 0a 20 20 66  6f 72 20 28 6c 6f 6f 70  |e);..  for (loop|
00000600  3d 30 3b 20 6c 6f 6f 70  3c 31 36 3b 20 6c 6f 6f  |=0; loop<16; loo|
00000610  70 2b 2b 29 20 63 6f 6c  73 5b 6c 6f 6f 70 5d 3d  |p++) cols[loop]=|
00000620  70 61 6c 5b 63 68 6f 69  63 65 2d 31 5d 5b 6c 6f  |pal[choice-1][lo|
00000630  6f 70 5d 3b 0a 0a 20 20  73 72 61 6e 64 28 73 61  |op];..  srand(sa|
00000640  74 5f 74 69 6d 65 6f 70  28 29 29 3b 0a 0a 20 20  |t_timeop());..  |
00000650  73 61 74 5f 73 63 72 65  65 6e 6d 6f 64 65 28 31  |sat_screenmode(1|
00000660  33 29 3b 0a 20 20 76 64  75 73 74 72 28 35 2c 32  |3);.  vdustr(5,2|
00000670  33 2c 30 2c 31 30 2c 31  36 2c 30 2c 30 2c 30 2c  |3,0,10,16,0,0,0,|
00000680  30 2c 30 2c 30 2c 2d 31  29 3b 20 2f 2a 20 74 75  |0,0,0,-1); /* tu|
00000690  72 6e 20 6f 66 66 20 63  75 72 73 6f 72 20 2a 2f  |rn off cursor */|
000006a0  0a 0a 20 20 73 63 72 65  65 6e 62 61 73 65 3d 28  |..  screenbase=(|
000006b0  63 68 61 72 2a 29 73 61  74 5f 67 65 74 73 63 72  |char*)sat_getscr|
000006c0  65 65 6e 62 61 73 65 28  29 3b 0a 0a 20 20 2f 2a  |eenbase();..  /*|
000006d0  20 66 69 6c 6c 20 61 6e  20 61 72 72 61 79 20 77  | fill an array w|
000006e0  69 74 68 20 61 20 73 70  61 72 73 65 20 72 61 6e  |ith a sparse ran|
000006f0  64 6f 6d 20 67 72 69 64  20 2a 2f 0a 20 20 66 6f  |dom grid */.  fo|
00000700  72 20 28 79 6c 6f 6f 70  3d 30 3b 20 79 6c 6f 6f  |r (yloop=0; yloo|
00000710  70 3c 47 52 49 44 5f 53  49 5a 45 3b 20 79 6c 6f  |p<GRID_SIZE; ylo|
00000720  6f 70 2b 3d 36 34 29 0a  20 20 20 20 66 6f 72 20  |op+=64).    for |
00000730  28 78 6c 6f 6f 70 3d 30  3b 20 78 6c 6f 6f 70 3c  |(xloop=0; xloop<|
00000740  47 52 49 44 5f 53 49 5a  45 3b 20 78 6c 6f 6f 70  |GRID_SIZE; xloop|
00000750  2b 3d 36 34 29 0a 20 20  20 20 20 20 77 72 69 74  |+=64).      writ|
00000760  65 6c 6f 63 28 73 63 72  65 65 6e 62 61 73 65 2c  |eloc(screenbase,|
00000770  20 78 6c 6f 6f 70 2c 20  79 6c 6f 6f 70 2c 20 61  | xloop, yloop, a|
00000780  62 73 28 72 61 6e 64 28  29 25 32 35 36 29 29 3b  |bs(rand()%256));|
00000790  0a 0a 20 20 2f 2a 20 69  6e 74 65 72 70 6f 6c 61  |..  /* interpola|
000007a0  74 65 20 73 70 61 72 73  65 20 72 61 6e 64 6f 6d  |te sparse random|
000007b0  20 67 72 69 64 20 69 6e  74 6f 20 62 69 67 20 73  | grid into big s|
000007c0  6d 6f 6f 74 68 6c 79 20  69 6e 74 65 72 70 6f 6c  |moothly interpol|
000007d0  61 74 65 64 20 67 72 69  64 20 2a 2f 0a 0a 20 20  |ated grid */..  |
000007e0  66 6f 72 20 28 70 6f 77  73 69 7a 65 3d 36 3b 20  |for (powsize=6; |
000007f0  70 6f 77 73 69 7a 65 3e  30 3b 20 70 6f 77 73 69  |powsize>0; powsi|
00000800  7a 65 2d 2d 29 0a 20 20  7b 0a 20 20 20 20 61 63  |ze--).  {.    ac|
00000810  74 73 69 7a 65 3d 31 3c  3c 70 6f 77 73 69 7a 65  |tsize=1<<powsize|
00000820  3b 0a 20 20 20 20 68 61  6c 66 73 69 7a 65 3d 61  |;.    halfsize=a|
00000830  63 74 73 69 7a 65 2f 32  3b 0a 0a 20 20 20 20 66  |ctsize/2;..    f|
00000840  6f 72 20 28 79 6c 6f 6f  70 3d 30 3b 20 79 6c 6f  |or (yloop=0; ylo|
00000850  6f 70 3c 47 52 49 44 5f  53 49 5a 45 3b 20 79 6c  |op<GRID_SIZE; yl|
00000860  6f 6f 70 2b 3d 61 63 74  73 69 7a 65 29 0a 20 20  |oop+=actsize).  |
00000870  20 20 7b 0a 20 20 20 20  20 20 66 6f 72 20 28 78  |  {.      for (x|
00000880  6c 6f 6f 70 3d 30 3b 20  78 6c 6f 6f 70 3c 47 52  |loop=0; xloop<GR|
00000890  49 44 5f 53 49 5a 45 3b  20 78 6c 6f 6f 70 2b 3d  |ID_SIZE; xloop+=|
000008a0  61 63 74 73 69 7a 65 29  0a 20 20 20 20 20 20 7b  |actsize).      {|
000008b0  0a 20 20 20 20 20 20 20  20 77 72 69 74 65 6c 6f  |.        writelo|
000008c0  63 28 73 63 72 65 65 6e  62 61 73 65 2c 20 78 6c  |c(screenbase, xl|
000008d0  6f 6f 70 2b 68 61 6c 66  73 69 7a 65 2c 20 79 6c  |oop+halfsize, yl|
000008e0  6f 6f 70 2b 68 61 6c 66  73 69 7a 65 2c 0a 20 20  |oop+halfsize,.  |
000008f0  20 20 20 20 20 20 20 28  28 72 65 61 64 6c 6f 63  |       ((readloc|
00000900  28 73 63 72 65 65 6e 62  61 73 65 2c 20 78 6c 6f  |(screenbase, xlo|
00000910  6f 70 2c 20 20 20 20 20  20 20 20 20 79 6c 6f 6f  |op,         yloo|
00000920  70 29 20 20 20 20 20 20  20 20 20 20 20 20 2b 0a  |p)            +.|
00000930  20 20 20 20 20 20 20 20  20 20 72 65 61 64 6c 6f  |          readlo|
00000940  63 28 73 63 72 65 65 6e  62 61 73 65 2c 20 78 6c  |c(screenbase, xl|
00000950  6f 6f 70 2b 61 63 74 73  69 7a 65 2c 20 79 6c 6f  |oop+actsize, ylo|
00000960  6f 70 29 20 20 20 20 20  20 20 20 20 20 20 20 2b  |op)            +|
00000970  0a 20 20 20 20 20 20 20  20 20 20 72 65 61 64 6c  |.          readl|
00000980  6f 63 28 73 63 72 65 65  6e 62 61 73 65 2c 20 78  |oc(screenbase, x|
00000990  6c 6f 6f 70 2b 61 63 74  73 69 7a 65 2c 20 79 6c  |loop+actsize, yl|
000009a0  6f 6f 70 2b 61 63 74 73  69 7a 65 29 20 20 20 20  |oop+actsize)    |
000009b0  2b 0a 20 20 20 20 20 20  20 20 20 20 72 65 61 64  |+.          read|
000009c0  6c 6f 63 28 73 63 72 65  65 6e 62 61 73 65 2c 20  |loc(screenbase, |
000009d0  78 6c 6f 6f 70 2c 20 20  20 20 20 20 20 20 20 79  |xloop,         y|
000009e0  6c 6f 6f 70 2b 61 63 74  73 69 7a 65 29 29 2f 34  |loop+actsize))/4|
000009f0  20 2b 0a 20 20 20 20 20  20 20 20 20 20 72 61 6e  | +.          ran|
00000a00  64 28 29 25 28 69 6e 74  29 28 28 28 66 6c 6f 61  |d()%(int)(((floa|
00000a10  74 29 61 63 74 73 69 7a  65 2a 72 6f 6f 74 32 29  |t)actsize*root2)|
00000a20  2a 31 36 29 2d 61 63 74  73 69 7a 65 2a 38 29 29  |*16)-actsize*8))|
00000a30  3b 0a 20 20 20 20 20 20  7d 0a 20 20 20 20 7d 0a  |;.      }.    }.|
00000a40  0a 20 20 20 20 66 6f 72  20 28 79 6c 6f 6f 70 3d  |.    for (yloop=|
00000a50  30 3b 20 79 6c 6f 6f 70  3c 47 52 49 44 5f 53 49  |0; yloop<GRID_SI|
00000a60  5a 45 3b 20 79 6c 6f 6f  70 2b 3d 61 63 74 73 69  |ZE; yloop+=actsi|
00000a70  7a 65 29 0a 20 20 20 20  7b 0a 20 20 20 20 20 20  |ze).    {.      |
00000a80  66 6f 72 20 28 78 6c 6f  6f 70 3d 30 3b 20 78 6c  |for (xloop=0; xl|
00000a90  6f 6f 70 3c 47 52 49 44  5f 53 49 5a 45 3b 20 78  |oop<GRID_SIZE; x|
00000aa0  6c 6f 6f 70 2b 3d 61 63  74 73 69 7a 65 29 0a 20  |loop+=actsize). |
00000ab0  20 20 20 20 20 7b 0a 20  20 20 20 20 20 20 20 77  |     {.        w|
00000ac0  72 69 74 65 6c 6f 63 28  73 63 72 65 65 6e 62 61  |riteloc(screenba|
00000ad0  73 65 2c 20 78 6c 6f 6f  70 2b 68 61 6c 66 73 69  |se, xloop+halfsi|
00000ae0  7a 65 2c 20 79 6c 6f 6f  70 2c 0a 20 20 20 20 20  |ze, yloop,.     |
00000af0  20 20 20 28 28 28 72 65  61 64 6c 6f 63 28 73 63  |   (((readloc(sc|
00000b00  72 65 65 6e 62 61 73 65  2c 20 78 6c 6f 6f 70 2c  |reenbase, xloop,|
00000b10  20 79 6c 6f 6f 70 29 20  20 20 20 20 20 20 20 20  | yloop)         |
00000b20  20 20 20 20 2b 0a 20 20  20 20 20 20 20 20 20 20  |    +.          |
00000b30  72 65 61 64 6c 6f 63 28  73 63 72 65 65 6e 62 61  |readloc(screenba|
00000b40  73 65 2c 20 78 6c 6f 6f  70 2b 61 63 74 73 69 7a  |se, xloop+actsiz|
00000b50  65 2c 20 79 6c 6f 6f 70  29 29 2f 32 29 20 2b 0a  |e, yloop))/2) +.|
00000b60  20 20 20 20 20 20 20 20  20 20 72 61 6e 64 28 29  |          rand()|
00000b70  25 28 61 63 74 73 69 7a  65 2a 31 36 29 2d 61 63  |%(actsize*16)-ac|
00000b80  74 73 69 7a 65 2a 38 29  29 3b 0a 20 20 20 20 20  |tsize*8));.     |
00000b90  20 20 20 77 72 69 74 65  6c 6f 63 28 73 63 72 65  |   writeloc(scre|
00000ba0  65 6e 62 61 73 65 2c 20  78 6c 6f 6f 70 2c 20 79  |enbase, xloop, y|
00000bb0  6c 6f 6f 70 2b 68 61 6c  66 73 69 7a 65 2c 0a 20  |loop+halfsize,. |
00000bc0  20 20 20 20 20 20 20 28  28 28 72 65 61 64 6c 6f  |       (((readlo|
00000bd0  63 28 73 63 72 65 65 6e  62 61 73 65 2c 20 78 6c  |c(screenbase, xl|
00000be0  6f 6f 70 2c 20 79 6c 6f  6f 70 29 20 20 20 20 20  |oop, yloop)     |
00000bf0  20 20 20 20 20 20 20 20  2b 0a 20 20 20 20 20 20  |        +.      |
00000c00  20 20 20 20 72 65 61 64  6c 6f 63 28 73 63 72 65  |    readloc(scre|
00000c10  65 6e 62 61 73 65 2c 20  78 6c 6f 6f 70 2c 20 79  |enbase, xloop, y|
00000c20  6c 6f 6f 70 2b 61 63 74  73 69 7a 65 29 29 2f 32  |loop+actsize))/2|
00000c30  29 20 2b 0a 20 20 20 20  20 20 20 20 20 20 72 61  |) +.          ra|
00000c40  6e 64 28 29 25 28 61 63  74 73 69 7a 65 2a 31 36  |nd()%(actsize*16|
00000c50  29 2d 61 63 74 73 69 7a  65 2a 38 29 29 3b 0a 20  |)-actsize*8));. |
00000c60  20 20 20 20 20 7d 0a 20  20 20 20 7d 0a 20 20 7d  |     }.    }.  }|
00000c70  0a 0a 20 20 66 6f 72 20  28 78 6c 6f 6f 70 3d 30  |..  for (xloop=0|
00000c80  3b 20 78 6c 6f 6f 70 3c  47 52 49 44 5f 53 49 5a  |; xloop<GRID_SIZ|
00000c90  45 3b 20 78 6c 6f 6f 70  2b 2b 29 0a 20 20 7b 0a  |E; xloop++).  {.|
00000ca0  20 20 20 20 66 6f 72 20  28 79 6c 6f 6f 70 3d 30  |    for (yloop=0|
00000cb0  3b 20 79 6c 6f 6f 70 3c  47 52 49 44 5f 53 49 5a  |; yloop<GRID_SIZ|
00000cc0  45 3b 20 79 6c 6f 6f 70  2b 2b 29 0a 20 20 20 20  |E; yloop++).    |
00000cd0  7b 0a 20 20 20 20 20 20  69 6e 74 20 63 6f 6c 3d  |{.      int col=|
00000ce0  28 72 65 61 64 6c 6f 63  28 73 63 72 65 65 6e 62  |(readloc(screenb|
00000cf0  61 73 65 2c 20 78 6c 6f  6f 70 2c 20 79 6c 6f 6f  |ase, xloop, yloo|
00000d00  70 29 2b 72 61 6e 64 28  29 25 31 36 2d 38 29 2f  |p)+rand()%16-8)/|
00000d10  31 36 3b 0a 20 20 20 20  20 20 77 72 69 74 65 6c  |16;.      writel|
00000d20  6f 63 28 73 63 72 65 65  6e 62 61 73 65 2c 20 78  |oc(screenbase, x|
00000d30  6c 6f 6f 70 2c 20 79 6c  6f 6f 70 2c 20 63 6f 6c  |loop, yloop, col|
00000d40  73 5b 52 4e 47 28 30 2c  31 35 2c 63 6f 6c 29 5d  |s[RNG(0,15,col)]|
00000d50  29 3b 0a 20 20 20 20 7d  0a 20 20 7d 0a 0a 20 20  |);.    }.  }..  |
00000d60  6d 61 70 3d 6d 61 6c 6c  6f 63 28 38 31 39 32 30  |map=malloc(81920|
00000d70  29 3b 0a 0a 20 20 63 6f  70 79 28 28 69 6e 74 2a  |);..  copy((int*|
00000d80  29 73 63 72 65 65 6e 62  61 73 65 2c 20 6d 61 70  |)screenbase, map|
00000d90  29 3b 0a 0a 20 20 64 6f  20 7b 0a 20 20 20 20 73  |);..  do {.    s|
00000da0  74 61 74 69 63 20 69 6e  74 20 78 32 3d 30 2c 79  |tatic int x2=0,y|
00000db0  32 3d 30 2c 78 3d 30 2c  79 3d 30 3b 0a 20 20 20  |2=0,x=0,y=0;.   |
00000dc0  20 73 74 61 74 69 63 20  69 6e 74 20 74 69 6d 65  | static int time|
00000dd0  3d 30 2c 20 6f 74 69 6d  65 3d 30 3b 0a 20 20 20  |=0, otime=0;.   |
00000de0  20 69 6e 74 20 61 2c 20  63 78 2c 20 63 79 2c 20  | int a, cx, cy, |
00000df0  73 70 65 65 64 3b 0a 20  20 20 20 70 61 72 61 6d  |speed;.    param|
00000e00  62 6c 6f 63 6b 20 69 6e  3b 0a 20 20 20 20 63 68  |block in;.    ch|
00000e10  61 72 20 6f 73 77 6f 72  64 69 6e 5b 36 5d 3d 7b  |ar oswordin[6]={|
00000e20  33 2c 31 32 38 2c 32 2c  30 2c 32 7d 3b 0a 0a 20  |3,128,2,0,2};.. |
00000e30  20 20 20 6f 74 69 6d 65  3d 74 69 6d 65 3b 0a 20  |   otime=time;. |
00000e40  20 20 20 74 69 6d 65 3d  73 61 74 5f 74 69 6d 65  |   time=sat_time|
00000e50  6f 70 28 29 3b 0a 20 20  20 20 73 70 65 65 64 3d  |op();.    speed=|
00000e60  28 74 69 6d 65 2d 6f 74  69 6d 65 29 2a 32 3b 0a  |(time-otime)*2;.|
00000e70  0a 20 20 20 20 73 61 74  5f 6d 6f 75 73 65 6f 70  |.    sat_mouseop|
00000e80  28 26 78 32 2c 26 79 32  2c 26 62 29 3b 0a 20 20  |(&x2,&y2,&b);.  |
00000e90  20 20 5f 6b 65 72 6e 65  6c 5f 6f 73 77 6f 72 64  |  _kernel_osword|
00000ea0  28 32 31 2c 28 69 6e 74  2a 29 6f 73 77 6f 72 64  |(21,(int*)osword|
00000eb0  69 6e 29 3b 20 2f 2a 20  6d 6f 75 73 65 20 74 6f  |in); /* mouse to|
00000ec0  20 36 34 30 2c 35 31 32  20 2a 2f 0a 20 20 20 20  | 640,512 */.    |
00000ed0  78 2b 3d 78 32 2d 36 34  30 3b 0a 20 20 20 20 79  |x+=x2-640;.    y|
00000ee0  2b 3d 79 32 2d 35 31 32  3b 0a 0a 20 20 20 20 61  |+=y2-512;..    a|
00000ef0  3d 2d 78 2f 34 3b 0a 20  20 20 20 69 66 20 28 62  |=-x/4;.    if (b|
00000f00  3d 3d 34 29 20 7b 0a 20  20 20 20 20 20 63 78 2b  |==4) {.      cx+|
00000f10  3d 28 69 6e 74 29 28 73  70 65 65 64 2a 73 69 6e  |=(int)(speed*sin|
00000f20  28 61 2f 35 37 2e 32 39  35 37 37 39 35 29 29 3b  |(a/57.2957795));|
00000f30  0a 20 20 20 20 20 20 63  79 2b 3d 28 69 6e 74 29  |.      cy+=(int)|
00000f40  28 73 70 65 65 64 2a 63  6f 73 28 61 2f 35 37 2e  |(speed*cos(a/57.|
00000f50  32 39 35 37 37 39 35 29  29 3b 0a 20 20 20 20 7d  |2957795));.    }|
00000f60  0a 20 20 20 20 69 66 20  28 62 3d 3d 31 29 20 7b  |.    if (b==1) {|
00000f70  0a 20 20 20 20 20 20 63  78 2d 3d 28 69 6e 74 29  |.      cx-=(int)|
00000f80  28 73 70 65 65 64 2a 73  69 6e 28 61 2f 35 37 2e  |(speed*sin(a/57.|
00000f90  32 39 35 37 37 39 35 29  29 3b 0a 20 20 20 20 20  |2957795));.     |
00000fa0  20 63 79 2d 3d 28 69 6e  74 29 28 73 70 65 65 64  | cy-=(int)(speed|
00000fb0  2a 63 6f 73 28 61 2f 35  37 2e 32 39 35 37 37 39  |*cos(a/57.295779|
00000fc0  35 29 29 3b 0a 20 20 20  20 7d 0a 20 20 20 20 69  |5));.    }.    i|
00000fd0  6e 2e 73 63 72 65 65 6e  62 61 73 65 3d 28 69 6e  |n.screenbase=(in|
00000fe0  74 2a 29 73 63 72 65 65  6e 62 61 73 65 3b 0a 20  |t*)screenbase;. |
00000ff0  20 20 20 69 6e 2e 73 6f  75 72 63 65 3d 6d 61 70  |   in.source=map|
00001000  3b 0a 20 20 20 20 69 6e  2e 73 69 6e 3d 28 69 6e  |;.    in.sin=(in|
00001010  74 29 28 73 69 6e 28 61  2f 35 37 2e 32 39 35 37  |t)(sin(a/57.2957|
00001020  37 39 35 29 2a 32 30 34  38 2e 30 29 3b 0a 20 20  |795)*2048.0);.  |
00001030  20 20 69 6e 2e 63 6f 73  3d 28 69 6e 74 29 28 63  |  in.cos=(int)(c|
00001040  6f 73 28 61 2f 35 37 2e  32 39 35 37 37 39 35 29  |os(a/57.2957795)|
00001050  2a 32 30 34 38 2e 30 29  3b 0a 20 20 20 20 69 6e  |*2048.0);.    in|
00001060  2e 64 69 66 66 78 3d 63  78 3b 0a 20 20 20 20 69  |.diffx=cx;.    i|
00001070  6e 2e 64 69 66 66 7a 3d  63 79 3b 0a 20 20 20 20  |n.diffz=cy;.    |
00001080  6d 61 70 74 6f 63 65 69  6c 28 26 69 6e 29 3b 0a  |maptoceil(&in);.|
00001090  20 20 7d 20 77 68 69 6c  65 20 28 62 21 3d 32 29  |  } while (b!=2)|
000010a0  3b 0a 0a 20 20 72 65 74  75 72 6e 20 30 3b 0a 7d  |;..  return 0;.}|
000010b0  0a                                                |.|
000010b1