Function map_object

src/display.c:332–366

* map_object() * * Map the given object. This routine assumes that the hero can physically * see the location of the object. Update the screen if directed. * [Note: feel_location() -> map_location() -> map_object() contradicts * the claim here that the hero can see obj's .] */

 * the claim here that the hero can see obj's <ox,oy>.]
 */
void
map_object(struct obj *obj, int show)
{
    coordxy x = obj->ox, y = obj->oy;
    int glyph = obj_to_glyph(obj, newsym_rn2);

    /* if this object is already displayed as a generic object, it might
       become a specific one now */
    if (glyph_is_generic_object(glyph) && cansee(x, y) && !Hallucination) {
        /* these 'r' and 'neardist' calculations match distant_name(objnam.c)
           and see_nearby_objects(below); we assume that this is a lone
           object or a pile-top, not something below the top of a pile */
        int r = (u.xray_range > 2) ? u.xray_range : 2,
            /* neardist produces a small square with rounded corners */
            neardist = (r * r) * 2 - r; /* same as r*r + r*(r-1) */

        if (distu(x, y) <= neardist) {
            observe_object(obj);
            glyph = obj_to_glyph(obj, newsym_rn2);
        }
    }

    if (svl.level.flags.hero_memory) {
        /* MRKR: While hallucinating, statues are seen as random monsters */
        /*       but remembered as random objects.                        */

        if (Hallucination && obj->otyp == STATUE) {
            levl[x][y].glyph = random_obj_to_glyph(newsym_rn2);
        } else {
            levl[x][y].glyph = glyph;
        }
    }
    if (show)
        show_glyph(x, y, glyph);
}

/*
 * map_invisible()