Files
nethack/src/selvar.c
nhmall 50811037f3 split some code into separate files
new .h files: hacklib.h selvar.h stairs.h

new .c files: calendar.c, getpos.c, report.c, selvar.c, stairs.c,
              strutil.c, wizcmds.c

cleanup of hacklib.c and mdlib.c

hacklib contains functions that do not have to link with the core

relocate wiz commands from cmd.c to wizcmds.c

relocate CRASHREPORT stuff to report.c

relocate getpos stuff from do_name.c to getpos.c

remove temporary struct definition from extern.h

cross-compile PRE-section split into cross-pre1.370 and cross-pre2.370

Windows sys/windows/Makefile.nmake and sys/windows/Makefile.mingw32 and
visual studio project file updates

Unix sys/unix/Makefile.src, sys/unix/Makefile.utl

populate selvar.c and selvar.h

build on MS-DOS (not cross-compile) Makefile updates
for sys/msdos/Makefile.GCC (untested)

vms updates for above (untested)
2024-03-07 11:01:04 -05:00

803 lines
21 KiB
C

/* NetHack 3.7 selvar.c $NHDT-Date: 1709677544 2024/03/05 22:25:44 $ $NHDT-Branch: keni-mdlib-followup $:$NHDT-Revision: 1.360 $ */
/* Copyright (c) 2024 by Pasi Kallinen */
/* NetHack may be freely redistributed. See license for details. */
#include "hack.h"
#include "selvar.h"
#include "sp_lev.h"
static boolean sel_flood_havepoint(coordxy, coordxy, coordxy *, coordxy *, int);
static long line_dist_coord(long, long, long, long, long, long);
/* selection */
struct selectionvar *
selection_new(void)
{
struct selectionvar *tmps = (struct selectionvar *) alloc(sizeof *tmps);
tmps->wid = COLNO;
tmps->hei = ROWNO;
tmps->bounds_dirty = FALSE;
tmps->bounds.lx = COLNO;
tmps->bounds.ly = ROWNO;
tmps->bounds.hx = tmps->bounds.hy = 0;
tmps->map = (char *) alloc((COLNO * ROWNO) + 1);
(void) memset(tmps->map, 1, (COLNO * ROWNO));
tmps->map[(COLNO * ROWNO)] = '\0';
return tmps;
}
void
selection_free(struct selectionvar *sel, boolean freesel)
{
if (sel) {
if (sel->map)
free(sel->map);
sel->map = NULL;
if (freesel)
free((genericptr_t) sel);
else
(void) memset((genericptr_t) sel, 0, sizeof *sel);
}
}
/* clear selection, setting all locations to value val */
void
selection_clear(struct selectionvar *sel, int val)
{
(void) memset(sel->map, 1 + val, (COLNO * ROWNO));
if (val) {
sel->bounds.lx = 0;
sel->bounds.ly = 0;
sel->bounds.hx = COLNO - 1;
sel->bounds.hy = ROWNO - 1;
} else {
sel->bounds.lx = COLNO;
sel->bounds.ly = ROWNO;
sel->bounds.hx = sel->bounds.hy = 0;
}
sel->bounds_dirty = FALSE;
}
struct selectionvar *
selection_clone(struct selectionvar *sel)
{
struct selectionvar *tmps = (struct selectionvar *) alloc(sizeof *tmps);
*tmps = *sel;
tmps->map = dupstr(sel->map);
return tmps;
}
/* get boundary rect of selection sel into b */
void
selection_getbounds(struct selectionvar *sel, NhRect *b)
{
if (!sel || !b)
return;
selection_recalc_bounds(sel);
if (sel->bounds.lx >= sel->wid) {
b->lx = 0;
b->ly = 0;
b->hx = COLNO - 1;
b->hy = ROWNO - 1;
} else {
b->lx = sel->bounds.lx;
b->ly = sel->bounds.ly;
b->hx = sel->bounds.hx;
b->hy = sel->bounds.hy;
}
}
/* recalc the boundary of selection, if necessary */
void
selection_recalc_bounds(struct selectionvar *sel)
{
coordxy x, y;
NhRect r;
if (!sel->bounds_dirty)
return;
sel->bounds.lx = COLNO;
sel->bounds.ly = ROWNO;
sel->bounds.hx = sel->bounds.hy = 0;
r.lx = r.ly = r.hx = r.hy = -1;
/* left */
for (x = 0; x < sel->wid; x++) {
for (y = 0; y < sel->hei; y++) {
if (selection_getpoint(x, y, sel)) {
r.lx = x;
break;
}
}
if (r.lx > -1)
break;
}
if (r.lx > -1) {
/* right */
for (x = sel->wid-1; x >= r.lx; x--) {
for (y = 0; y < sel->hei; y++) {
if (selection_getpoint(x, y, sel)) {
r.hx = x;
break;
}
}
if (r.hx > -1)
break;
}
/* top */
for (y = 0; y < sel->hei; y++) {
for (x = r.lx; x <= r.hx; x++) {
if (selection_getpoint(x, y, sel)) {
r.ly = y;
break;
}
}
if (r.ly > -1)
break;
}
/* bottom */
for (y = sel->hei-1; y >= r.ly; y--) {
for (x = r.lx; x <= r.hx; x++) {
if (selection_getpoint(x, y, sel)) {
r.hy = y;
break;
}
}
if (r.hy > -1)
break;
}
sel->bounds = r;
}
sel->bounds_dirty = FALSE;
}
coordxy
selection_getpoint(
coordxy x, coordxy y,
struct selectionvar *sel)
{
if (!sel || !sel->map)
return 0;
if (x < 0 || y < 0 || x >= sel->wid || y >= sel->hei)
return 0;
return (sel->map[sel->wid * y + x] - 1);
}
void
selection_setpoint(
coordxy x, coordxy y,
struct selectionvar *sel,
int c)
{
if (!sel || !sel->map)
return;
if (x < 0 || y < 0 || x >= sel->wid || y >= sel->hei)
return;
if (c && !sel->bounds_dirty) {
if (sel->bounds.lx > x) sel->bounds.lx = x;
if (sel->bounds.ly > y) sel->bounds.ly = y;
if (sel->bounds.hx < x) sel->bounds.hx = x;
if (sel->bounds.hy < y) sel->bounds.hy = y;
} else {
sel->bounds_dirty = TRUE;
}
sel->map[sel->wid * y + x] = (char) (c + 1);
}
struct selectionvar *
selection_not(struct selectionvar *s)
{
int x, y;
NhRect tmprect = cg.zeroNhRect;
for (x = 0; x < s->wid; x++)
for (y = 0; y < s->hei; y++)
selection_setpoint(x, y, s, selection_getpoint(x, y, s) ? 0 : 1);
selection_getbounds(s, &tmprect);
return s;
}
struct selectionvar *
selection_filter_percent(
struct selectionvar *ov,
int percent)
{
int x, y;
struct selectionvar *ret;
NhRect rect = cg.zeroNhRect;
if (!ov)
return NULL;
ret = selection_new();
selection_getbounds(ov, &rect);
for (x = rect.lx; x <= rect.hx; x++)
for (y = rect.ly; y <= rect.hy; y++)
if (selection_getpoint(x, y, ov) && (rn2(100) < percent))
selection_setpoint(x, y, ret, 1);
return ret;
}
struct selectionvar *
selection_filter_mapchar(struct selectionvar *ov, xint16 typ, int lit)
{
int x, y;
struct selectionvar *ret;
NhRect rect = cg.zeroNhRect;
if (!ov)
return NULL;
ret = selection_new();
selection_getbounds(ov, &rect);
for (x = rect.lx; x <= rect.hx; x++)
for (y = rect.ly; y <= rect.hy; y++)
if (selection_getpoint(x, y, ov)
&& match_maptyps(typ, levl[x][y].typ)) {
switch (lit) {
default:
case -2:
selection_setpoint(x, y, ret, 1);
break;
case -1:
selection_setpoint(x, y, ret, rn2(2));
break;
case 0:
case 1:
if (levl[x][y].lit == (unsigned int) lit)
selection_setpoint(x, y, ret, 1);
break;
}
}
return ret;
}
int
selection_rndcoord(
struct selectionvar *ov,
coordxy *x, coordxy *y,
boolean removeit)
{
int idx = 0;
int c;
int dx, dy;
NhRect rect = cg.zeroNhRect;
selection_getbounds(ov, &rect);
for (dx = rect.lx; dx <= rect.hx; dx++)
for (dy = rect.ly; dy <= rect.hy; dy++)
if (selection_getpoint(dx, dy, ov))
idx++;
if (idx) {
c = rn2(idx);
for (dx = rect.lx; dx <= rect.hx; dx++)
for (dy = rect.ly; dy <= rect.hy; dy++)
if (selection_getpoint(dx, dy, ov)) {
if (!c) {
*x = dx;
*y = dy;
if (removeit)
selection_setpoint(dx, dy, ov, 0);
return 1;
}
c--;
}
}
*x = *y = -1;
return 0;
}
void
selection_do_grow(struct selectionvar *ov, int dir)
{
coordxy x, y;
struct selectionvar *tmp;
NhRect rect = cg.zeroNhRect;
if (!ov)
return;
tmp = selection_new();
if (dir == W_RANDOM)
dir = random_wdir();
selection_getbounds(ov, &rect);
for (x = max(0, rect.lx-1); x <= min(COLNO-1, rect.hx+1); x++)
for (y = max(0, rect.ly-1); y <= min(ROWNO-1, rect.hy+1); y++) {
/* note: dir is a mask of multiple directions, but the only
way to specify diagonals is by including the two adjacent
orthogonal directions, which effectively specifies three-
way growth [WEST|NORTH => WEST plus WEST|NORTH plus NORTH] */
if (((dir & W_WEST) && selection_getpoint(x + 1, y, ov))
|| (((dir & (W_WEST | W_NORTH)) == (W_WEST | W_NORTH))
&& selection_getpoint(x + 1, y + 1, ov))
|| ((dir & W_NORTH) && selection_getpoint(x, y + 1, ov))
|| (((dir & (W_NORTH | W_EAST)) == (W_NORTH | W_EAST))
&& selection_getpoint(x - 1, y + 1, ov))
|| ((dir & W_EAST) && selection_getpoint(x - 1, y, ov))
|| (((dir & (W_EAST | W_SOUTH)) == (W_EAST | W_SOUTH))
&& selection_getpoint(x - 1, y - 1, ov))
|| ((dir & W_SOUTH) && selection_getpoint(x, y - 1, ov))
|| (((dir & (W_SOUTH | W_WEST)) == (W_SOUTH | W_WEST))
&& selection_getpoint(x + 1, y - 1, ov))) {
selection_setpoint(x, y, tmp, 1);
}
}
selection_getbounds(tmp, &rect);
for (x = rect.lx; x <= rect.hx; x++)
for (y = rect.ly; y <= rect.hy; y++)
if (selection_getpoint(x, y, tmp))
selection_setpoint(x, y, ov, 1);
selection_free(tmp, TRUE);
}
static int (*selection_flood_check_func)(coordxy, coordxy);
void
set_selection_floodfillchk(int (*f)(coordxy, coordxy))
{
selection_flood_check_func = f;
}
/* check whethere <x,y> is already in xs[],ys[] */
static boolean
sel_flood_havepoint(
coordxy x, coordxy y,
coordxy xs[], coordxy ys[],
int n)
{
coordxy xx = x, yy = y;
while (n > 0) {
--n;
if (xs[n] == xx && ys[n] == yy)
return TRUE;
}
return FALSE;
}
void
selection_floodfill(
struct selectionvar *ov,
coordxy x, coordxy y,
boolean diagonals)
{
struct selectionvar *tmp = selection_new();
#define SEL_FLOOD_STACK (COLNO * ROWNO)
#define SEL_FLOOD(nx, ny) \
do { \
if (idx < SEL_FLOOD_STACK) { \
dx[idx] = (nx); \
dy[idx] = (ny); \
idx++; \
} else \
panic(floodfill_stack_overrun); \
} while (0)
#define SEL_FLOOD_CHKDIR(mx, my, sel) \
do { \
if (isok((mx), (my)) \
&& (*selection_flood_check_func)((mx), (my)) \
&& !selection_getpoint((mx), (my), (sel)) \
&& !sel_flood_havepoint((mx), (my), dx, dy, idx)) \
SEL_FLOOD((mx), (my)); \
} while (0)
static const char floodfill_stack_overrun[] = "floodfill stack overrun";
int idx = 0;
coordxy dx[SEL_FLOOD_STACK];
coordxy dy[SEL_FLOOD_STACK];
if (selection_flood_check_func == (int (*)(coordxy, coordxy)) 0) {
selection_free(tmp, TRUE);
return;
}
SEL_FLOOD(x, y);
do {
idx--;
x = dx[idx];
y = dy[idx];
if (isok(x, y)) {
selection_setpoint(x, y, ov, 1);
selection_setpoint(x, y, tmp, 1);
}
SEL_FLOOD_CHKDIR((x + 1), y, tmp);
SEL_FLOOD_CHKDIR((x - 1), y, tmp);
SEL_FLOOD_CHKDIR(x, (y + 1), tmp);
SEL_FLOOD_CHKDIR(x, (y - 1), tmp);
if (diagonals) {
SEL_FLOOD_CHKDIR((x + 1), (y + 1), tmp);
SEL_FLOOD_CHKDIR((x - 1), (y - 1), tmp);
SEL_FLOOD_CHKDIR((x - 1), (y + 1), tmp);
SEL_FLOOD_CHKDIR((x + 1), (y - 1), tmp);
}
} while (idx > 0);
#undef SEL_FLOOD
#undef SEL_FLOOD_STACK
#undef SEL_FLOOD_CHKDIR
selection_free(tmp, TRUE);
}
/* McIlroy's Ellipse Algorithm */
void
selection_do_ellipse(
struct selectionvar *ov,
int xc, int yc,
int a, int b,
int filled)
{ /* e(x,y) = b^2*x^2 + a^2*y^2 - a^2*b^2 */
int x = 0, y = b;
long a2 = (long) a * a, b2 = (long) b * b;
long crit1 = -(a2 / 4 + a % 2 + b2);
long crit2 = -(b2 / 4 + b % 2 + a2);
long crit3 = -(b2 / 4 + b % 2);
long t = -a2 * y; /* e(x+1/2,y-1/2) - (a^2+b^2)/4 */
long dxt = 2 * b2 * x, dyt = -2 * a2 * y;
long d2xt = 2 * b2, d2yt = 2 * a2;
long width = 1;
long i;
if (!ov)
return;
filled = !filled;
if (!filled) {
while (y >= 0 && x <= a) {
selection_setpoint(xc + x, yc + y, ov, 1);
if (x != 0 || y != 0)
selection_setpoint(xc - x, yc - y, ov, 1);
if (x != 0 && y != 0) {
selection_setpoint(xc + x, yc - y, ov, 1);
selection_setpoint(xc - x, yc + y, ov, 1);
}
if (t + b2 * x <= crit1 /* e(x+1,y-1/2) <= 0 */
|| t + a2 * y <= crit3) { /* e(x+1/2,y) <= 0 */
x++;
dxt += d2xt;
t += dxt;
} else if (t - a2 * y > crit2) { /* e(x+1/2,y-1) > 0 */
y--;
dyt += d2yt;
t += dyt;
} else {
x++;
dxt += d2xt;
t += dxt;
y--;
dyt += d2yt;
t += dyt;
}
}
} else {
while (y >= 0 && x <= a) {
if (t + b2 * x <= crit1 /* e(x+1,y-1/2) <= 0 */
|| t + a2 * y <= crit3) { /* e(x+1/2,y) <= 0 */
x++;
dxt += d2xt;
t += dxt;
width += 2;
} else if (t - a2 * y > crit2) { /* e(x+1/2,y-1) > 0 */
for (i = 0; i < width; i++)
selection_setpoint(xc - x + i, yc - y, ov, 1);
if (y != 0)
for (i = 0; i < width; i++)
selection_setpoint(xc - x + i, yc + y, ov, 1);
y--;
dyt += d2yt;
t += dyt;
} else {
for (i = 0; i < width; i++)
selection_setpoint(xc - x + i, yc - y, ov, 1);
if (y != 0)
for (i = 0; i < width; i++)
selection_setpoint(xc - x + i, yc + y, ov, 1);
x++;
dxt += d2xt;
t += dxt;
y--;
dyt += d2yt;
t += dyt;
width += 2;
}
}
}
}
/* square of distance from line segment (x1,y1, x2,y2) to point (x3,y3) */
static long
line_dist_coord(long x1, long y1, long x2, long y2, long x3, long y3)
{
long px = x2 - x1;
long py = y2 - y1;
long s = px * px + py * py;
long x, y, dx, dy, distsq = 0;
float lu = 0;
if (x1 == x2 && y1 == y2)
return dist2(x1, y1, x3, y3);
lu = ((x3 - x1) * px + (y3 - y1) * py) / (float) s;
if (lu > 1)
lu = 1;
else if (lu < 0)
lu = 0;
x = x1 + lu * px;
y = y1 + lu * py;
dx = x - x3;
dy = y - y3;
distsq = dx * dx + dy * dy;
return distsq;
}
/* guts of l_selection_gradient */
void
selection_do_gradient(
struct selectionvar *ov,
long x, long y,
long x2,long y2,
long gtyp,
long mind, long maxd)
{
long dx, dy, dofs;
if (mind > maxd) {
long tmp = mind;
mind = maxd;
maxd = tmp;
}
dofs = maxd * maxd - mind * mind;
if (dofs < 1)
dofs = 1;
switch (gtyp) {
default:
impossible("Unrecognized gradient type! Defaulting to radial...");
/* FALLTHRU */
case SEL_GRADIENT_RADIAL: {
for (dx = 0; dx < COLNO; dx++)
for (dy = 0; dy < ROWNO; dy++) {
long d0 = line_dist_coord(x, y, x2, y2, dx, dy);
if (d0 <= mind * mind
|| (d0 <= maxd * maxd && d0 - mind * mind < rn2(dofs)))
selection_setpoint(dx, dy, ov, 1);
}
break;
}
case SEL_GRADIENT_SQUARE: {
for (dx = 0; dx < COLNO; dx++)
for (dy = 0; dy < ROWNO; dy++) {
long d1 = line_dist_coord(x, y, x2, y2, x, dy);
long d2 = line_dist_coord(x, y, x2, y2, dx, y);
long d3 = line_dist_coord(x, y, x2, y2, x2, dy);
long d4 = line_dist_coord(x, y, x2, y2, dx, y2);
long d5 = line_dist_coord(x, y, x2, y2, dx, dy);
long d0 = min(d5, min(max(d1, d2), max(d3, d4)));
if (d0 <= mind * mind
|| (d0 <= maxd * maxd && d0 - mind * mind < rn2(dofs)))
selection_setpoint(dx, dy, ov, 1);
}
break;
} /*case*/
} /*switch*/
}
/* bresenham line algo */
void
selection_do_line(
coordxy x1, coordxy y1,
coordxy x2, coordxy y2,
struct selectionvar *ov)
{
int d0, dx, dy, ai, bi, xi, yi;
if (x1 < x2) {
xi = 1;
dx = x2 - x1;
} else {
xi = -1;
dx = x1 - x2;
}
if (y1 < y2) {
yi = 1;
dy = y2 - y1;
} else {
yi = -1;
dy = y1 - y2;
}
selection_setpoint(x1, y1, ov, 1);
if (!dx && !dy) {
/* single point - already all done */
;
} else if (dx > dy) {
ai = (dy - dx) * 2;
bi = dy * 2;
d0 = bi - dx;
do {
if (d0 >= 0) {
y1 += yi;
d0 += ai;
} else
d0 += bi;
x1 += xi;
selection_setpoint(x1, y1, ov, 1);
} while (x1 != x2);
} else {
ai = (dx - dy) * 2;
bi = dx * 2;
d0 = bi - dy;
do {
if (d0 >= 0) {
x1 += xi;
d0 += ai;
} else
d0 += bi;
y1 += yi;
selection_setpoint(x1, y1, ov, 1);
} while (y1 != y2);
}
}
void
selection_do_randline(
coordxy x1, coordxy y1,
coordxy x2, coordxy y2,
schar rough,
schar rec,
struct selectionvar *ov)
{
int mx, my;
int dx, dy;
if (rec < 1 || (x2 == x1 && y2 == y1))
return;
if (rough > max(abs(x2 - x1), abs(y2 - y1)))
rough = max(abs(x2 - x1), abs(y2 - y1));
if (rough < 2) {
mx = ((x1 + x2) / 2);
my = ((y1 + y2) / 2);
} else {
do {
dx = rn2(rough) - (rough / 2);
dy = rn2(rough) - (rough / 2);
mx = ((x1 + x2) / 2) + dx;
my = ((y1 + y2) / 2) + dy;
} while ((mx > COLNO - 1 || mx < 0 || my < 0 || my > ROWNO - 1));
}
if (!selection_getpoint(mx, my, ov)) {
selection_setpoint(mx, my, ov, 1);
}
rough = (rough * 2) / 3;
rec--;
selection_do_randline(x1, y1, mx, my, rough, rec, ov);
selection_do_randline(mx, my, x2, y2, rough, rec, ov);
selection_setpoint(x2, y2, ov, 1);
}
void
selection_iterate(
struct selectionvar *ov,
select_iter_func func,
genericptr_t arg)
{
coordxy x, y;
NhRect rect = cg.zeroNhRect;
if (!ov)
return;
selection_getbounds(ov, &rect);
for (x = rect.lx; x <= rect.hx; x++)
for (y = rect.ly; y <= rect.hy; y++)
if (isok(x,y) && selection_getpoint(x, y, ov))
(*func)(x, y, arg);
}
/* selection is not rectangular, or has holes in it */
boolean
selection_is_irregular(struct selectionvar *sel)
{
coordxy x, y;
NhRect rect = cg.zeroNhRect;
selection_getbounds(sel, &rect);
for (x = rect.lx; x <= rect.hx; x++)
for (y = rect.ly; y <= rect.hy; y++)
if (isok(x,y) && !selection_getpoint(x, y, sel))
return TRUE;
return FALSE;
}
/* return a description of the selection size */
char *
selection_size_description(struct selectionvar *sel, char *buf)
{
NhRect rect = cg.zeroNhRect;
coordxy dx, dy;
selection_getbounds(sel, &rect);
dx = rect.hx - rect.lx + 1;
dy = rect.hy - rect.ly + 1;
Sprintf(buf, "%s %i by %i", selection_is_irregular(sel) ? "irregularly shaped"
: (dx == dy) ? "square"
: "rectangular",
dx, dy);
return buf;
}
struct selectionvar *
selection_from_mkroom(struct mkroom *croom)
{
struct selectionvar *sel = selection_new();
coordxy x, y;
unsigned rmno;
if (!croom && gc.coder && gc.coder->croom)
croom = gc.coder->croom;
if (!croom)
return sel;
rmno = (unsigned)((croom - gr.rooms) + ROOMOFFSET);
for (y = croom->ly; y <= croom->hy; y++)
for (x = croom->lx; x <= croom->hx; x++)
if (isok(x, y) && !levl[x][y].edge
&& levl[x][y].roomno == rmno)
selection_setpoint(x, y, sel, 1);
return sel;
}
void
selection_force_newsyms(struct selectionvar *sel)
{
coordxy x, y;
for (x = 1; x < sel->wid; x++)
for (y = 0; y < sel->hei; y++)
if (selection_getpoint(x, y, sel))
newsym_force(x, y);
}
/*selvar.c*/