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xenocara/app/xlockmore/modes/bug.c
matthieu 110b2a9207 Importing xlockmore 5.22
2006-11-26 11:07:42 +00:00

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/* -*- Mode: C; tab-width: 4 -*- */
/* bug --- Michael Palmiter's simulated evolution */
#if !defined( lint ) && !defined( SABER )
static const char sccsid[] = "@(#)bug.c 5.00 2000/11/01 xlockmore";
#endif
/*-
* Copyright (c) 1995 by David Bagley.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation.
*
* This file is provided AS IS with no warranties of any kind. The author
* shall have no liability with respect to the infringement of copyrights,
* trade secrets or any patents by this file or any part thereof. In no
* event will the author be liable for any lost revenue or profits or
* other special, indirect and consequential damages.
*
* Revision History:
* 01-Nov-2000: Allocation checks
* 10-May-1997: Compatible with xscreensaver
* 24-Aug-1995: Coded from A.K. Dewdney's, "Computer Recreations", Scientific
* American Magazine" May 1989 pp138-141 and Sept 1989 p 183.
* also used wator.c as a guide.
*/
/*-
* Bugs learn to hunt bacteria (or die) in the Garden of Eden and outside.
* They start as jitterbugs and "evolve" to move straight (in the Garden
* they may evolve to twirl around).
*/
#ifdef STANDALONE
#define MODE_bug
#define PROGCLASS "Bug"
#define HACK_INIT init_bug
#define HACK_DRAW draw_bug
#define bug_opts xlockmore_opts
#define DEFAULTS "*delay: 75000 \n" \
"*count: 10 \n" \
"*cycles: 32767 \n" \
"*size: -4 \n" \
"*ncolors: 64 \n"
#include "xlockmore.h" /* in xscreensaver distribution */
#else /* STANDALONE */
#include "xlock.h" /* in xlockmore distribution */
#endif /* STANDALONE */
#include "automata.h"
#ifdef MODE_bug
#define DEF_NEIGHBORS "0" /* choose random value */
#define DEF_EYES "False"
static int neighbors;
static Bool eyes;
static XrmOptionDescRec opts[] =
{
{(char *) "-neighbors", (char *) ".bug.neighbors", XrmoptionSepArg, (caddr_t) NULL},
{(char *) "-eyes", (char *) ".bug.eyes", XrmoptionNoArg, (caddr_t) "on"},
{(char *) "+eyes", (char *) ".bug.eyes", XrmoptionNoArg, (caddr_t) "off"},
};
static argtype vars[] =
{
{(void *) & neighbors, (char *) "neighbors", (char *) "Neighbors", (char *) DEF_NEIGHBORS, t_Int},
{(void *) & eyes, (char *) "eyes", (char *) "Eyes", (char *) DEF_EYES, t_Bool},
};
static OptionStruct desc[] =
{
{(char *) "-neighbors num", (char *) "squares 4 or 8, hexagons 6"},
{(char *) "-/+eyes", (char *) "turn on/off eyes"}
};
ModeSpecOpt bug_opts =
{sizeof opts / sizeof opts[0], opts, sizeof vars / sizeof vars[0], vars, desc};
#ifdef USE_MODULES
ModStruct bug_description =
{"bug", "init_bug", "draw_bug", "release_bug",
"refresh_bug", "init_bug", (char *) NULL, &bug_opts,
75000, 10, 32767, -4, 64, 1.0, "",
"Shows Palmiter's bug evolution and garden of Eden", 0, NULL};
#endif
#ifdef DEBUG
#include <assert.h>
#endif
#define BUGBITS(n,w,h)\
if ((bp->pixmaps[bp->init_bits]=\
XCreatePixmapFromBitmapData(display,window,(char *)n,w,h,1,0,1))==None){\
free_bug(display,bp); return;} else {bp->init_bits++;}
#define BACTERIA 0
#define BUG 1
#define MAXENERGY 1500 /* Max energy storage */
#define INITENERGY 400 /* Initial energy */
#define FOODPERCYCLE 1
#define BACTERIAENERGY 40
#define STRONG 1000 /* Min energy to breed */
#define MATURE 800 /* Breeding time of bugs */
#define MAXGENE 6
#define MINGENE (-MAXGENE)
#define REDRAWSTEP 2000 /* How many bacteria to draw per cycle */
#define MINGRIDSIZE 24
#define MINSIZE 1
#define ANGLES 360
#define MAXNEIGHBORS 12
/* Relative hex bug moves */
/* Forward, Right, Hard Right, Reverse, Hard Left, Left */
/* Bug data */
typedef struct {
char direction;
int age, energy;
unsigned int color;
int col, row;
int gene[MAXNEIGHBORS];
double gene_prob[MAXNEIGHBORS];
#if EXTRA_GENES
int lgene[MAXNEIGHBORS];
double lgene_prob[MAXNEIGHBORS];
#endif
} bugstruct;
/* Doublely linked list */
typedef struct _BugList {
bugstruct info;
struct _BugList *previous, *next;
} BugList;
typedef struct {
Bool painted;
int neighbors;
int nbugs; /* Number of bugs */
int eden; /* Does the garden exist? */
int generation;
int ncols, nrows;
int width, height;
int edenwidth, edenheight;
int edenstartx, edenstarty;
int xs, ys, xb, yb;
int redrawing, redrawpos;
int eyes;
BugList *currbug, *babybug, *lastbug, *firstbug, *lasttemp, *firsttemp;
BugList **arr; /* 0=empty or pts to a bug */
char *bacteria; /* 0=empty or food */
int init_bits;
GC stippledGC;
Pixmap pixmaps[NUMSTIPPLES - 1];
union {
XPoint hexagon[6];
XPoint triangle[2][3];
} shape;
} bugfarmstruct;
static double genexp[MAXGENE - MINGENE + 1];
static char plots[] =
{3, 4, 6, 8,
#ifdef NUMBER_9
9,
#endif
12}; /* Neighborhoods */
#define NEIGHBORKINDS (long) (sizeof plots / sizeof *plots)
static bugfarmstruct *bugfarms = (bugfarmstruct *) NULL;
#if 0
static void
position_of_neighbor(bugfarmstruct * bp, int dir, int *pcol, int *prow)
{
int col = *pcol, row = *prow;
/* NO WRAPING */
if (bp->neighbors == 4 || bp->neighbors == 6 || bp->neighbors == 8) {
switch (dir) {
case 0:
col = col + 1;
break;
case 45:
col = col + 1;
row = row - 1;
break;
case 60:
if (!(row & 1))
col = col + 1;
row = row - 1;
break;
case 90:
row = row - 1;
break;
case 120:
if (row & 1)
col = col - 1;
row = row - 1;
break;
case 135:
col = col - 1;
row = row - 1;
break;
case 180:
col = col - 1;
break;
case 225:
col = col - 1;
row = row + 1;
break;
case 240:
if (row & 1)
col = col - 1;
row = row + 1;
break;
case 270:
row = row + 1;
break;
case 300:
if (!(row & 1))
col = col + 1;
row = row + 1;
break;
case 315:
col = col + 1;
row = row + 1;
break;
default:
(void) fprintf(stderr, "wrong direction %d\n", dir);
}
} else { /* TRI */
switch (dir) {
case 0:
col = col + 1;
break;
case 20:
case 30:
case 40:
col = col + 1;
row = row - 1;
break;
case 60:
if ((col + row) % 2) { /* right */
row = row - 1;
} else { /* left */
col = col + 1;
row = row - 2;
}
break;
case 80:
case 90:
case 100:
row = row - 2;
break;
case 120:
if ((col + row) % 2) { /* right */
col = col - 1;
row = row - 2;
} else { /* left */
row = row - 1;
}
break;
case 140:
case 150:
case 160:
col = col - 1;
row = row - 1;
break;
case 180:
col = col - 1;
break;
case 200:
case 210:
case 220:
col = col - 1;
row = row + 1;
break;
case 240:
if ((col + row) % 2) { /* right */
col = col - 1;
row = row + 2;
} else { /* left */
row = row + 1;
}
break;
case 260:
case 270:
case 280:
row = row + 2;
break;
case 300:
if ((col + row) % 2) { /* right */
row = row + 1;
} else { /* left */
col = col + 1;
row = row + 2;
}
break;
case 320:
case 330:
case 340:
col = col + 1;
row = row + 1;
break;
default:
(void) fprintf(stderr, "wrong direction %d\n", dir);
}
}
*pcol = col;
*prow = row;
}
#endif
#if 0
static void
screen2grid(bugfarmstruct *bp, int sx, int sy, int x, int y)
{
*y = sy / 2;
if (bp->neighbors == 6) {
*x = (sx + 1) / 2 - 1;
} else if (bp->neighbors == 4 || bp->neighbors == 8) {
*x = sx / 2;
} else { /* TRI */
/* Wrong but... */
*x = sx / 3;
}
}
#endif
static void
grid2screen(bugfarmstruct *bp, int x, int y, int *sx, int *sy)
{
*sy = y * 2 + 1;
if (bp->neighbors == 6) {
*sx = 2 * x + 1 + !(y & 1);
} else if (bp->neighbors == 4 || bp->neighbors == 8) {
*sx = x * 2 + 1;
} else { /* TRI */
*sx = x * 3 + 1 + ((y & 1) ? (x & 1) : !(x & 1));
}
}
static char
dirmove(bugfarmstruct * bp, int x, int y, int dir, int *nx, int *ny)
{
if (bp->neighbors == 6) {
switch (dir) {
case 0:
*ny = y;
*nx = x + 1;
return (*nx < bp->ncols - !(*ny & 1));
case 60:
*ny = y - 1;
*nx = x + (int) !(y & 1);
return (*ny >= 0 && *nx < bp->ncols - !(*ny & 1));
case 120:
*ny = y - 1;
*nx = x - (int) (y & 1);
return (*ny >= 0 && *nx >= 0);
case 180:
*ny = y;
*nx = x - 1;
return (*nx >= 0);
case 240:
*ny = y + 1;
*nx = x - (int) (y & 1);
return (*ny < bp->nrows && *nx >= 0);
case 300:
*ny = y + 1;
*nx = x + (int) !(y & 1);
return (*ny < bp->nrows && *nx < bp->ncols - !(*ny & 1));
default:
(void) fprintf(stderr, "wrong direction %d\n", dir);
}
} else if (bp->neighbors == 4 || bp->neighbors == 8) {
switch (dir) {
case 0:
*ny = y;
*nx = x + 1;
return (*nx < bp->ncols);
case 45:
*ny = y - 1;
*nx = x + 1;
return (*ny >= 0 && *nx < bp->ncols);
case 90:
*ny = y - 1;
*nx = x;
return (*ny >= 0);
case 135:
*ny = y - 1;
*nx = x - 1;
return (*ny >= 0 && *nx >= 0);
case 180:
*ny = y;
*nx = x - 1;
return (*nx >= 0);
case 225:
*ny = y + 1;
*nx = x - 1;
return (*ny < bp->nrows && *nx >= 0);
case 270:
*ny = y + 1;
*nx = x;
return (*ny < bp->nrows);
case 315:
*ny = y + 1;
*nx = x + 1;
return (*ny < bp->nrows && *nx < bp->ncols);
default:
(void) fprintf(stderr, "wrong direction %d\n", dir);
}
} else { /* TRI */
switch (dir) {
case 0:
*nx = x + 1;
*ny = y;
return (*nx < bp->ncols);
case 20:
case 30:
case 40:
*nx = x + 1;
*ny = y - 1;
return (*nx < bp->ncols && *ny >= 0);
case 60:
if ((x + y) % 2) { /* right */
*nx = x;
*ny = y - 1;
return (*ny >= 0);
} else { /* left */
*nx = x + 1;
*ny = y - 2;
return (*nx < bp->ncols && *ny >= 0);
}
case 80:
case 90:
case 100:
*nx = x;
*ny = y - 2;
return (*ny >= 0);
case 120:
if ((x + y) % 2) { /* right */
*nx = x - 1;
*ny = y - 2;
return (*nx >= 0 && *ny >= 0);
} else { /* left */
*nx = x;
*ny = y - 1;
return (*ny >= 0);
}
case 140:
case 150:
case 160:
*nx = x - 1;
*ny = y - 1;
return (*nx >= 0 && *ny >= 0);
case 180:
*nx = x - 1;
*ny = y;
return (*nx >= 0);
case 200:
case 210:
case 220:
*nx = x - 1;
*ny = y + 1;
return (*nx >= 0 && *ny < bp->nrows);
case 240:
if ((x + y) % 2) { /* right */
*nx = x - 1;
*ny = y + 2;
return (*nx >= 0 && *ny < bp->nrows);
} else { /* left */
*nx = x;
*ny = y + 1;
return (*ny < bp->nrows);
}
case 260:
case 270:
case 280:
*nx = x;
*ny = y + 2;
return (*ny < bp->nrows);
case 300:
if ((x + y) % 2) { /* right */
*nx = x;
*ny = y + 1;
return (*ny < bp->nrows);
} else { /* left */
*nx = x + 1;
*ny = y + 2;
return (*nx < bp->ncols && *ny < bp->nrows);
}
case 320:
case 330:
case 340:
*nx = x + 1;
*ny = y + 1;
return (*nx < bp->ncols && *ny < bp->nrows);
default:
(void) fprintf(stderr, "wrong direction %d\n", dir);
}
}
*nx = -1;
*ny = -1;
return 0;
}
/* This keeps bugs from walking over each other and escaping off the screen */
static int
has_neighbor(bugfarmstruct * bp, int col, int row)
{
int colrow = col + row * bp->ncols;
if (bp->neighbors == 6) {
if ((row > 0) && bp->arr[colrow - bp->ncols])
return True;
if ((row < bp->nrows - 1) && bp->arr[colrow + bp->ncols])
return True;
if (col > 0) {
if (bp->arr[colrow - 1])
return True;
if (row & 1) {
if ((row > 0) && bp->arr[colrow - 1 - bp->ncols])
return True;
if ((row < bp->nrows - 1) && bp->arr[colrow - 1 + bp->ncols])
return True;
}
}
if (col < bp->ncols - 1) {
if (bp->arr[colrow + 1])
return True;
if (!(row & 1)) {
if ((row > 0) && bp->arr[colrow + 1 - bp->ncols])
return True;
if ((row < bp->nrows - 1) && bp->arr[colrow + 1 + bp->ncols])
return True;
}
}
} else if (bp->neighbors == 4 || bp->neighbors == 8) {
/* Same for both because the bug square takes up the space regardless */
if ((row > 0) && bp->arr[colrow - bp->ncols])
return True;
if ((row < bp->nrows - 1) && bp->arr[colrow + bp->ncols])
return True;
if ((col > 0) && bp->arr[colrow - 1])
return True;
if ((col < bp->ncols - 1) && bp->arr[colrow + 1])
return True;
if (row > 0 && col > 0 && bp->arr[colrow - bp->ncols - 1])
return True;
if (row > 0 && col < bp->ncols - 1 && bp->arr[colrow - bp->ncols + 1])
return True;
if (row < bp->nrows - 1 && col > 0 && bp->arr[colrow + bp->ncols - 1])
return True;
if (row < bp->nrows - 1 && col < bp->ncols - 1 && bp->arr[colrow + bp->ncols + 1])
return True;
} else { /* TRI */
/* Same for all three neighbor kinds. Only care about 3
adjacent spots because that is all the squares will
overlap.*/
if (((row & 1) && (col & 1)) || ((!(row & 1)) && (!(col & 1)))) {
if ((col < bp->ncols - 1) && bp->arr[colrow + 1])
return True;
} else {
if ((col > 0) && bp->arr[colrow - 1])
return True;
}
if ((row > 0) && bp->arr[colrow - bp->ncols])
return True;
if ((row < bp->nrows - 1) && bp->arr[colrow + bp->ncols])
return True;
}
return False;
}
static void
drawabacterium(ModeInfo * mi, int col, int row, unsigned char color)
{
bugfarmstruct *bp = &bugfarms[MI_SCREEN(mi)];
int ccol, crow;
if (color)
XSetForeground(MI_DISPLAY(mi), MI_GC(mi), MI_WHITE_PIXEL(mi));
else
XSetForeground(MI_DISPLAY(mi), MI_GC(mi), MI_BLACK_PIXEL(mi));
grid2screen(bp, col, row, &ccol, &crow);
XFillRectangle(MI_DISPLAY(mi), MI_WINDOW(mi), MI_GC(mi),
bp->xb + bp->xs * ccol, bp->yb + bp->ys * crow,
bp->xs, bp->ys);
}
static void
drawabug(ModeInfo * mi, int col, int row, unsigned int color, int direction)
{
bugfarmstruct *bp = &bugfarms[MI_SCREEN(mi)];
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
int ccol, crow;
GC gc;
if (MI_NPIXELS(mi) > 3) {
XSetForeground(display, MI_GC(mi), MI_PIXEL(mi, color));
gc = MI_GC(mi);
} else {
XGCValues gcv;
gcv.stipple = bp->pixmaps[color];
gcv.foreground = MI_WHITE_PIXEL(mi);
gcv.background = MI_BLACK_PIXEL(mi);
XChangeGC(MI_DISPLAY(mi), bp->stippledGC,
GCStipple | GCForeground | GCBackground, &gcv);
gc = bp->stippledGC;
}
grid2screen(bp, col, row, &ccol, &crow);
ccol = bp->xb + bp->xs * (ccol - 1);
crow = bp->yb + bp->ys * (crow - 1);
XFillRectangle(display, window, gc,
ccol, crow, 3 * bp->xs, 3 * bp->ys);
if (bp->eyes && bp->xs >= 1 && bp->ys >= 1) { /* Draw Eyes */
XSetForeground(display, MI_GC(mi), MI_BLACK_PIXEL(mi));
switch (direction) {
case 0:
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs - 2,
crow + 3 * bp->ys / 2 - 1);
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs - 2,
crow + 3 * bp->ys / 2 + 1);
break;
case 20:
case 30:
case 40:
case 45:
case 60:
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs - 3,
crow + 1);
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs - 2,
crow + 2);
break;
case 80:
case 90:
case 100:
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs / 2 - 1,
crow + 1);
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs / 2 + 1,
crow + 1);
break;
case 120:
case 135:
case 140:
case 150:
case 160:
XDrawPoint(display, window, MI_GC(mi),
ccol + 2,
crow + 1);
XDrawPoint(display, window, MI_GC(mi),
ccol + 1,
crow + 2);
break;
case 180:
XDrawPoint(display, window, MI_GC(mi),
ccol + 1,
crow + 3 * bp->ys / 2 - 1);
XDrawPoint(display, window, MI_GC(mi),
ccol + 1,
crow + 3 * bp->ys / 2 + 1);
break;
case 200:
case 210:
case 220:
case 225:
case 240:
XDrawPoint(display, window, MI_GC(mi),
ccol + 2,
crow + 3 * bp->ys - 2);
XDrawPoint(display, window, MI_GC(mi),
ccol + 1,
crow + 3 * bp->ys - 3);
break;
case 260:
case 270:
case 280:
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs / 2 - 1,
crow + 3 * bp->ys - 2);
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs / 2 + 1,
crow + 3 * bp->ys - 2);
break;
case 300:
case 315:
case 320:
case 330:
case 340:
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs - 3,
crow + 3 * bp->ys - 2);
XDrawPoint(display, window, MI_GC(mi),
ccol + 3 * bp->xs - 2,
crow + 3 * bp->ys - 3);
break;
default:
(void) fprintf(stderr, "wrong direction %d\n", direction);
}
}
}
static void
eraseabug(ModeInfo * mi, int col, int row)
{
bugfarmstruct *bp = &bugfarms[MI_SCREEN(mi)];
int ccol, crow;
XSetForeground(MI_DISPLAY(mi), MI_GC(mi), MI_BLACK_PIXEL(mi));
grid2screen(bp, col, row, &ccol, &crow);
XFillRectangle(MI_DISPLAY(mi), MI_WINDOW(mi), MI_GC(mi),
bp->xb + bp->xs * (ccol - 1), bp->yb + bp->ys * (crow - 1),
3 * bp->xs, 3 * bp->ys);
}
static void
flush_buglist(bugfarmstruct * bp)
{
while (bp->lastbug->previous != bp->firstbug) {
bp->currbug = bp->lastbug->previous;
bp->currbug->previous->next = bp->lastbug;
bp->lastbug->previous = bp->currbug->previous;
/*bp->arr[bp->currbug->info.col + bp->currbug->info.row * bp->ncols] = 0; */
free(bp->currbug);
}
while (bp->lasttemp->previous != bp->firsttemp) {
bp->currbug = bp->lasttemp->previous;
bp->currbug->previous->next = bp->lasttemp;
bp->lasttemp->previous = bp->currbug->previous;
/*bp->arr[bp->currbug->info.col + bp->currbug->info.row * bp->ncols] = 0; */
free(bp->currbug);
}
}
static void
free_buglist(bugfarmstruct *bp)
{
if (bp->firstbug != NULL) {
flush_buglist(bp);
free(bp->firstbug);
bp->firstbug = (BugList *) NULL;
}
if (bp->lastbug != NULL) {
free(bp->lastbug);
bp->lastbug = (BugList *) NULL;
}
if (bp->lasttemp != NULL) {
free(bp->lasttemp);
bp->lasttemp = (BugList *) NULL;
}
if (bp->firsttemp != NULL) {
free(bp->firsttemp);
bp->firsttemp = (BugList *) NULL;
}
}
static Bool
init_buglist(bugfarmstruct * bp)
{
/* Waste some space at the beginning and end of list
so we do not have to complicated checks against falling off the ends. */
if ((bp->lastbug = (BugList *) malloc(sizeof (BugList))) == NULL) {
free_buglist(bp);
return False;
}
if ((bp->firstbug = (BugList *) malloc(sizeof (BugList))) == NULL) {
free_buglist(bp);
return False;
}
bp->firstbug->previous = bp->lastbug->next = (struct _BugList *) NULL;
bp->firstbug->next = bp->lastbug->previous = (struct _BugList *) NULL;
bp->firstbug->next = bp->lastbug;
bp->lastbug->previous = bp->firstbug;
if ((bp->lasttemp = (BugList *) malloc(sizeof (BugList))) == NULL) {
free_buglist(bp);
return False;
}
if ((bp->firsttemp = (BugList *) malloc(sizeof (BugList))) == NULL) {
free_buglist(bp);
return False;
}
bp->firsttemp->previous = bp->lasttemp->next = (struct _BugList *) NULL;
bp->firsttemp->next = bp->lasttemp->previous = (struct _BugList *) NULL;
bp->firsttemp->next = bp->lasttemp;
bp->lasttemp->previous = bp->firsttemp;
return True;
}
static void
addto_buglist(bugfarmstruct * bp, bugstruct info)
{
if ((bp->currbug = (BugList *) malloc(sizeof (BugList))) == NULL) {
free_buglist(bp);
return;
}
bp->lastbug->previous->next = bp->currbug;
bp->currbug->previous = bp->lastbug->previous;
bp->currbug->next = bp->lastbug;
bp->lastbug->previous = bp->currbug;
bp->currbug->info = info;
}
static void
removefrom_buglist(bugfarmstruct * bp, BugList * ptr)
{
ptr->previous->next = ptr->next;
ptr->next->previous = ptr->previous;
bp->arr[ptr->info.col + ptr->info.row * bp->ncols] = 0;
free(ptr);
}
static void
dupin_buglist(bugfarmstruct * bp)
{
BugList *temp;
if ((temp = (BugList *) malloc(sizeof (BugList))) == NULL) {
free_buglist(bp);
return;
}
temp->previous = bp->babybug;
temp->next = bp->babybug->next;
bp->babybug->next = temp;
temp->next->previous = temp;
temp->info = bp->babybug->info;
bp->babybug = temp;
}
/*-
* new bug at end of list, this rotates who goes first, young bugs go last
* this most likely will not change the feel to any real degree
*/
static void
cutfrom_buglist(bugfarmstruct * bp)
{
bp->babybug = bp->currbug;
bp->currbug = bp->currbug->previous;
bp->currbug->next = bp->babybug->next;
bp->babybug->next->previous = bp->currbug;
bp->babybug->next = bp->lasttemp;
bp->babybug->previous = bp->lasttemp->previous;
bp->babybug->previous->next = bp->babybug;
bp->babybug->next->previous = bp->babybug;
}
static void
reattach_buglist(bugfarmstruct * bp)
{
bp->currbug = bp->lastbug->previous;
bp->currbug->next = bp->firsttemp->next;
bp->currbug->next->previous = bp->currbug;
bp->lastbug->previous = bp->lasttemp->previous;
bp->lasttemp->previous->next = bp->lastbug;
bp->lasttemp->previous = bp->firsttemp;
bp->firsttemp->next = bp->lasttemp;
}
static int
dirbug(bugstruct * info, int local_neighbors)
{
double sum = 0.0, prob;
int i;
prob = (double) LRAND() / MAXRAND;
#if EXTRA_GENES
if ((local_neighbors % 2) && !((info->col + info->row) & 1)) {
for (i = 0; i < local_neighbors; i++) {
sum += info->lgene_prob[i];
if (prob < sum)
return i;
}
} else
#endif
{
for (i = 0; i < local_neighbors; i++) {
sum += info->gene_prob[i];
if (prob < sum)
return i;
}
}
return local_neighbors - 1; /* Could miss due to rounding */
}
static void
mutatebug(bugstruct * info, int local_neighbors)
{
double sum = 0.0;
int gene;
gene = NRAND(local_neighbors);
if (LRAND() & 1) {
if (info->gene[gene] == MAXGENE)
return;
info->gene[gene]++;
} else {
if (info->gene[gene] == MINGENE)
return;
info->gene[gene]--;
}
for (gene = 0; gene < local_neighbors; gene++)
sum += genexp[info->gene[gene] + MAXGENE];
for (gene = 0; gene < local_neighbors; gene++)
info->gene_prob[gene] = genexp[info->gene[gene] + MAXGENE] / sum;
#if EXTRA_GENES
if (local_neighbors % 2) {
sum = 0.0;
gene = NRAND(local_neighbors);
if (LRAND() & 1) {
if (info->lgene[gene] == MAXGENE)
return;
info->lgene[gene]++;
} else {
if (info->lgene[gene] == MINGENE)
return;
info->lgene[gene]--;
}
for (gene = 0; gene < local_neighbors; gene++)
sum += genexp[info->lgene[gene] + MAXGENE];
for (gene = 0; gene < local_neighbors; gene++)
info->lgene_prob[gene] = genexp[info->lgene[gene] + MAXGENE] / sum;
}
#endif
}
static void
makebacteria(ModeInfo * mi,
int n, int startx, int starty, int width, int height, Bool draw)
{
int nbacteria = 0, ntries = 0, col, row, colrow;
bugfarmstruct *bp = &bugfarms[MI_SCREEN(mi)];
/* Make bacteria but if can not, exit */
while (nbacteria < n && ntries < 2 * n) {
row = NRAND(height) + starty;
if (bp->neighbors == 6) {
if (width - (!(row & 1)) > 0)
col = NRAND(width - (!(row & 1))) + startx;
else
col = startx;
} else { /* RECT or TRI */
col = NRAND(width) + startx;
}
colrow = col + row * bp->ncols;
ntries++;
if (!bp->arr[colrow] && !bp->bacteria[colrow]) {
nbacteria++;
bp->bacteria[colrow] = True;
drawabacterium(mi, col, row, draw);
}
}
}
static void
redrawbacteria(ModeInfo * mi, int colrow)
{
int col, row;
bugfarmstruct *bp = &bugfarms[MI_SCREEN(mi)];
if (!bp->bacteria[colrow])
return;
row = colrow / bp->ncols;
col = colrow % bp->ncols;
drawabacterium(mi, col, row, True);
}
static void
free_bug(Display *display, bugfarmstruct *bp)
{
int shade;
if (bp->stippledGC != None) {
XFreeGC(display, bp->stippledGC);
bp->stippledGC = None;
}
for (shade = 0; shade < bp->init_bits; shade++) {
if (bp->pixmaps[shade] != None) {
XFreePixmap(display, bp->pixmaps[shade]);
bp->pixmaps[shade] = None;
}
}
bp->init_bits = 0;
if (bp->firstbug != NULL) {
flush_buglist(bp);
free(bp->firstbug);
bp->firstbug = (BugList *) NULL;
}
if (bp->lastbug != NULL) {
free(bp->lastbug);
bp->lastbug = (BugList *) NULL;
}
if (bp->lasttemp != NULL) {
free(bp->lasttemp);
bp->lasttemp = (BugList *) NULL;
}
if (bp->firsttemp != NULL) {
free(bp->firsttemp);
bp->firsttemp = (BugList *) NULL;
}
if (bp->arr != NULL) {
free(bp->arr);
bp->arr = (BugList **) NULL;
}
if (bp->bacteria != NULL) {
free(bp->bacteria);
bp->bacteria = (char *) NULL;
}
}
void
init_bug(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
int size = MI_SIZE(mi);
XGCValues gcv;
int nbugs = 0, ntries = 0, col = 0, row, gene, colrow, i;
int nccols, ncrows;
double sum;
bugstruct info;
bugfarmstruct *bp;
if (bugfarms == NULL) {
if ((bugfarms = (bugfarmstruct *) calloc(MI_NUM_SCREENS(mi),
sizeof (bugfarmstruct))) == NULL)
return;
}
bp = &bugfarms[MI_SCREEN(mi)];
if (MI_NPIXELS(mi) <= 3) {
if (bp->stippledGC == None) {
gcv.fill_style = FillOpaqueStippled;
if ((bp->stippledGC = XCreateGC(display, window,
GCFillStyle, &gcv)) == None) {
free_bug(display, bp);
return;
}
}
if (bp->init_bits == 0) {
for (i = 1; i < NUMSTIPPLES; i++) {
BUGBITS(stipples[i], STIPPLESIZE, STIPPLESIZE);
}
}
}
bp->generation = 0;
if (bp->firstbug == NULL) { /* Genesis */
/* Set up what will be a 'triply' linked list.
doubly linked list, doubly linked to an array */
if (!init_buglist(bp)) {
free_bug(display, bp);
return;
}
genexp[MAXGENE] = 1;
for (i = 1; i <= MAXGENE; i++) {
genexp[MAXGENE + i] = genexp[MAXGENE + i - 1] * M_E;
genexp[MAXGENE - i] = 1.0 / genexp[MAXGENE + i];
}
} else /* Apocolypse now */
flush_buglist(bp);
for (i = 0; i < NEIGHBORKINDS; i++) {
if (neighbors == plots[i]) {
bp->neighbors = plots[i];
break;
}
if (i == NEIGHBORKINDS - 1) {
bp->neighbors = plots[NRAND(NEIGHBORKINDS)];
break;
}
}
bp->width = MI_WIDTH(mi);
bp->height = MI_HEIGHT(mi);
if (bp->width < 8)
bp->width = 8;
if (bp->height < 8)
bp->height = 8;
if (size < -MINSIZE)
bp->ys = NRAND(MIN(-size, MAX(MINSIZE, MIN(bp->width, bp->height) /
MINGRIDSIZE)) - MINSIZE + 1) + MINSIZE;
else if (size < MINSIZE) {
if (!size)
bp->ys = MAX(MINSIZE, MIN(bp->width, bp->height) / MINGRIDSIZE);
else
bp->ys = MINSIZE;
} else
bp->ys = MIN(size, MAX(MINSIZE, MIN(bp->width, bp->height) /
MINGRIDSIZE));
bp->xs = bp->ys;
nccols = MAX(bp->width / bp->xs - 2, 2);
ncrows = MAX(bp->height / bp->ys - 1, 2);
bp->nrows = ncrows / 2;
if ((bp->neighbors % 2) || bp->neighbors == 12) {
bp->ncols = nccols / 3;
if (bp->ncols & 1)
bp->ncols--; /* Must be odd for no wrap */
if (bp->ncols < 2)
bp->ncols = 2;
if (!(bp->nrows & 1))
bp->nrows--; /* Must be even for no wrap */
} else
bp->ncols = nccols / 2;
if (bp->neighbors == 6 && !(bp->nrows & 1))
bp->nrows--; /* Must be odd for no wrap */
bp->xb = (bp->width - bp->xs * nccols) / 2;
bp->yb = (bp->height - bp->ys * ncrows) / 2;
if (bp->arr != NULL)
free(bp->arr);
if ((bp->arr = (BugList **) calloc(bp->ncols * bp->nrows,
sizeof (BugList *))) == NULL) {
free_bug(display, bp);
return;
}
if (bp->bacteria != NULL)
free(bp->bacteria);
if ((bp->bacteria = (char *) calloc(bp->ncols * bp->nrows,
sizeof (char))) == NULL) {
free_bug(display, bp);
return;
}
bp->edenheight = bp->nrows / 4;
bp->edenwidth = bp->ncols / 4;
if ((bp->neighbors % 2) || bp->neighbors == 12) {
if (bp->edenwidth & 1)
bp->edenwidth--;
if (!(bp->edenheight & 1))
bp->edenheight--;
} else if (bp->neighbors == 6 && bp->edenheight && !(bp->edenheight & 1))
bp->edenheight--; /* Make sure its odd */
bp->eden = (bp->edenwidth > 1 && bp->edenheight > 1);
if (bp->eden) {
bp->edenstartx = NRAND(bp->ncols - bp->edenwidth);
bp->edenstarty = NRAND(bp->nrows - bp->edenheight);
if ((bp->neighbors % 2) || bp->neighbors == 12) {
if (bp->edenstartx & 1) {
bp->edenstartx--;
bp->eden = (bp->edenwidth > 1);
}
if (bp->edenstarty & 1) {
bp->edenstarty--;
bp->eden = (bp->edenheight > 1);
}
} else if (bp->neighbors == 6 && (bp->edenstarty & 1)) {
bp->edenstarty--;
bp->eden = (bp->edenheight > 1);
}
}
/* Play G-d with these numbers... the genes */
nbugs = MI_COUNT(mi);
if (nbugs < 0)
nbugs = NRAND(-nbugs) + 1;
bp->nbugs = 0;
MI_CLEARWINDOW(mi);
bp->painted = False;
if (MI_IS_FULLRANDOM(mi)) {
bp->eyes = (Bool) (LRAND() & 1);
} else {
bp->eyes = eyes;
}
bp->eyes = (bp->eyes && bp->xs > 1 && bp->ys > 1);
/* Try to make bugs, but if can not, exit */
while (bp->nbugs < nbugs && ntries < 2 * nbugs) {
row = NRAND(bp->nrows);
if (bp->neighbors == 6) {
if (bp->ncols - (!(row & 1)) > 0)
col = NRAND(bp->ncols - (!(row & 1)));
else
col = 0;
} else { /* RECT or TRI */
col = NRAND(bp->ncols);
}
colrow = col + row * bp->ncols;
ntries++;
if (!bp->arr[colrow] && !has_neighbor(bp, col, row)) {
bp->nbugs++;
info.age = 0;
info.energy = INITENERGY;
info.direction = NRAND(bp->neighbors);
for (gene = 0; gene < bp->neighbors; gene++)
#if 0
/* Some creationalism, may create gliders or twirlers */
do {
double temp = (double) LRAND() / MAXRAND;
info.gene[gene] = ((int) (1.0 / (1.0 - temp * temp)) - 1) *
((LRAND() & 1) ? -1 : 1);
} while (info.gene[gene] > MAXGENE / 2 ||
info.gene[gene] < MINGENE / 2);
#else /* Jitterbugs, evolve or die */
info.gene[gene] = 0;
#endif
sum = 0;
for (gene = 0; gene < bp->neighbors; gene++)
sum += genexp[info.gene[gene] + MAXGENE];
for (gene = 0; gene < bp->neighbors; gene++)
info.gene_prob[gene] = genexp[info.gene[gene] + MAXGENE] / sum;
#if EXTRA_GENES
if (bp->neighbors % 2) {
for (gene = 0; gene < bp->neighbors; gene++)
#if 0
/* Some creationalism, may create gliders or twirlers */
do {
double temp = (double) LRAND() / MAXRAND;
info.lgene[gene] = ((int) (1.0 / (1.0 - temp * temp)) - 1) *
((LRAND() & 1) ? -1 : 1);
} while (info.lgene[gene] > MAXGENE / 2 ||
info.lgene[gene] < MINGENE / 2);
#else /* Jitterbugs, evolve or die */
info.lgene[gene] = 0;
#endif
sum = 0;
for (gene = 0; gene < bp->neighbors; gene++)
sum += genexp[info.lgene[gene] + MAXGENE];
for (gene = 0; gene < bp->neighbors; gene++)
info.lgene_prob[gene] = genexp[info.lgene[gene] + MAXGENE] / sum;
}
#endif
if (MI_NPIXELS(mi) > 3)
info.color = NRAND(MI_NPIXELS(mi));
else
info.color = NRAND(NUMSTIPPLES - 1);
info.col = col;
info.row = row;
addto_buglist(bp, info);
if (bp->firstbug == NULL) {
free_bug(display, bp);
return;
}
bp->arr[colrow] = bp->currbug;
drawabug(mi, col, row, bp->currbug->info.color, (int) bp->currbug->info.direction * ANGLES / bp->neighbors);
}
}
makebacteria(mi, bp->ncols * bp->nrows / 2, 0, 0, bp->ncols, bp->nrows,
False);
if (bp->eden)
makebacteria(mi, bp->edenwidth * bp->edenheight / 2,
bp->edenstartx, bp->edenstarty, bp->edenwidth, bp->edenheight, False);
bp->redrawing = 1;
bp->redrawpos = 0;
}
#define ENOUGH 16
void
draw_bug(ModeInfo * mi)
{
int col, row, ncol = -1, nrow = -1, colrow, ncolrow;
int absdir = 0, tryit, dir;
bugfarmstruct *bp;
if (bugfarms == NULL)
return;
bp = &bugfarms[MI_SCREEN(mi)];
if (bp->firstbug == NULL)
return;
MI_IS_DRAWN(mi) = True;
bp->painted = True;
bp->currbug = bp->firstbug->next;
while (bp->currbug != bp->lastbug) {
col = bp->currbug->info.col;
row = bp->currbug->info.row;
colrow = col + row * bp->ncols;
if (bp->currbug->info.energy-- < 0) { /* Time to die, Bug */
#ifdef DEBUG
assert(bp->currbug == bp->arr[colrow]);
#endif
/* back up one or else in void */
bp->currbug = bp->currbug->previous;
removefrom_buglist(bp, bp->arr[colrow]);
#ifdef DEBUG
assert(bp->arr[colrow] == 0);
#endif
bp->arr[colrow] = 0;
eraseabug(mi, col, row);
bp->nbugs--;
} else { /* try to move */
bp->arr[colrow] = 0; /* Don't want neighbor to detect itself */
tryit = 0;
do {
if (tryit++ > ENOUGH) {
break;
}
absdir = (bp->currbug->info.direction +
dirbug(&bp->currbug->info, bp->neighbors)) % bp->neighbors;
dir = absdir * ANGLES / bp->neighbors;
if (bp->neighbors % 2) {
if ((col + row) & 1)
dir = (3 * ANGLES / 2 - dir) % ANGLES;
else
dir = (ANGLES - dir) % ANGLES;
}
} while (!dirmove(bp, col, row, dir,
&ncol, &nrow) || has_neighbor(bp, ncol, nrow) ||
bp->arr[ncol + nrow * bp->ncols]);
bp->currbug->info.age++;
bp->currbug->info.energy--;
if (tryit <= ENOUGH) {
ncolrow = ncol + nrow * bp->ncols;
if (bp->bacteria[ncolrow]) {
bp->currbug->info.energy += BACTERIAENERGY;
bp->bacteria[ncolrow] = 0;
if (bp->currbug->info.energy > MAXENERGY)
bp->currbug->info.energy = MAXENERGY;
}
bp->currbug->info.col = ncol;
bp->currbug->info.row = nrow;
bp->currbug->info.direction = absdir;
#ifdef DEBUG
assert(bp->arr[ncolrow] == 0);
#endif
bp->arr[ncolrow] = bp->currbug;
if (bp->currbug->info.energy > STRONG &&
bp->currbug->info.age > MATURE) { /* breed */
drawabug(mi, ncol, nrow, bp->currbug->info.color, (int) bp->currbug->info.direction * ANGLES / bp->neighbors);
cutfrom_buglist(bp); /* This rotates out who goes first */
bp->babybug->info.age = 0;
bp->babybug->info.energy = INITENERGY;
dupin_buglist(bp);
if (bp->firstbug == NULL) {
free_bug(MI_DISPLAY(mi), bp);
return;
}
mutatebug(&bp->babybug->previous->info, bp->neighbors);
mutatebug(&bp->babybug->info, bp->neighbors);
bp->arr[colrow] = bp->babybug;
bp->babybug->info.col = col;
bp->babybug->info.row = row;
bp->nbugs++;
} else {
eraseabug(mi, col, row);
drawabug(mi, ncol, nrow, bp->currbug->info.color, (int) bp->currbug->info.direction * ANGLES / bp->neighbors);
}
} else
bp->arr[colrow] = bp->currbug;
}
bp->currbug = bp->currbug->next;
}
reattach_buglist(bp);
makebacteria(mi, FOODPERCYCLE, 0, 0, bp->ncols, bp->nrows, True);
if (bp->eden)
makebacteria(mi, FOODPERCYCLE,
bp->edenstartx, bp->edenstarty, bp->edenwidth, bp->edenheight, True);
if (!bp->nbugs || bp->generation >= MI_CYCLES(mi))
init_bug(mi);
bp->generation++;
if (bp->redrawing) {
int i;
for (i = 0; i < REDRAWSTEP; i++) {
if (bp->bacteria[bp->redrawpos])
redrawbacteria(mi, bp->redrawpos);
if (++(bp->redrawpos) >= bp->ncols * bp->nrows) {
bp->redrawing = 0;
break;
}
}
}
}
void
release_bug(ModeInfo * mi)
{
if (bugfarms != NULL) {
int screen;
for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++)
free_bug(MI_DISPLAY(mi), &bugfarms[screen]);
free(bugfarms);
bugfarms = (bugfarmstruct *) NULL;
}
}
void
refresh_bug(ModeInfo * mi)
{
bugfarmstruct *bp;
if (bugfarms == NULL)
return;
bp = &bugfarms[MI_SCREEN(mi)];
if (bp->painted) {
MI_CLEARWINDOW(mi);
bp->painted = False;
bp->redrawing = 1;
bp->redrawpos = 0;
}
}
#endif /* MODE_bug */
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