/**
* Light or Darken the town
*/
void cave_illuminate(struct chunk *c, bool daytime)
{
int y, x, i;
/* Apply light or darkness */
for (y = 0; y < c->height; y++)
for (x = 0; x < c->width; x++) {
int d;
bool light = FALSE;
feature_type *f_ptr = &f_info[c->squares[y][x].feat];
/* Skip grids with no surrounding floors or stairs */
for (d = 0; d < 9; d++) {
/* Extract adjacent (legal) location */
int yy = y + ddy_ddd[d];
int xx = x + ddx_ddd[d];
/* Paranoia */
if (!square_in_bounds_fully(c, yy, xx)) continue;
/* Test */
if (square_isfloor(c, yy, xx) || square_isstairs(c, yy, xx))
light = TRUE;
}
if (!light) continue;
/* Only interesting grids at night */
if (daytime || !tf_has(f_ptr->flags, TF_FLOOR)) {
sqinfo_on(c->squares[y][x].info, SQUARE_GLOW);
sqinfo_on(c->squares[y][x].info, SQUARE_MARK);
} else {
sqinfo_off(c->squares[y][x].info, SQUARE_GLOW);
sqinfo_off(c->squares[y][x].info, SQUARE_MARK);
}
}
/* Light shop doorways */
for (y = 0; y < c->height; y++) {
for (x = 0; x < c->width; x++) {
if (!square_isshop(c, y, x))
continue;
for (i = 0; i < 8; i++) {
int yy = y + ddy_ddd[i];
int xx = x + ddx_ddd[i];
sqinfo_on(c->squares[yy][xx].info, SQUARE_GLOW);
sqinfo_on(c->squares[yy][xx].info, SQUARE_MARK);
}
}
}
/* Fully update the visuals */
player->upkeep->update |= (PU_FORGET_VIEW | PU_UPDATE_VIEW | PU_MONSTERS);
/* Redraw map, monster list */
player->upkeep->redraw |= (PR_MAP | PR_MONLIST | PR_ITEMLIST);
}
/**
* Determine if a given location may be "destroyed"
*
* Used by destruction spells, and for placing stairs, etc.
*/
bool square_changeable(struct chunk *c, int y, int x)
{
object_type *obj;
/* Forbid perma-grids */
if (square_isperm(c, y, x) || square_isshop(c, y, x) ||
square_isstairs(c, y, x))
return (FALSE);
/* Check objects */
for (obj = square_object(c, y, x); obj; obj = obj->next)
/* Forbid artifact grids */
if (obj->artifact) return (FALSE);
/* Accept */
return (TRUE);
}
/**
* Place the player at a random starting location.
* \param c current chunk
* \param p the player
*/
void new_player_spot(struct chunk *c, struct player *p)
{
int y, x;
/* Try to find a good place to put the player */
if (OPT(p, birth_levels_persist) &&
square_in_bounds_fully(c, p->py, p->px) &&
square_isstairs(c, p->py, p->px)) {
y = p->py;
x = p->px;
} else if (!find_start(c, &y, &x)) {
quit("Failed to place player!");
}
/* Create stairs the player came down if allowed and necessary */
if (!OPT(p, birth_connect_stairs))
;
else if (p->upkeep->create_down_stair)
square_set_feat(c, y, x, FEAT_MORE);
else if (p->upkeep->create_up_stair)
square_set_feat(c, y, x, FEAT_LESS);
player_place(c, p, y, x);
}