Function m_everyturn_effect

src/monmove.c:649–663

called every turn for each living monster on the map, and the hero; caller makes sure that we're not called for DEADMONSTER() */

/* called every turn for each living monster on the map, and the hero;
   caller makes sure that we're not called for DEADMONSTER() */
void
m_everyturn_effect(struct monst *mtmp)
{
    boolean is_u = (mtmp == &gy.youmonst) ? TRUE : FALSE;
    coordxy x = is_u ? u.ux : mtmp->mx,
            y = is_u ? u.uy : mtmp->my;

    if (mtmp->data == &mons[PM_FOG_CLOUD]) {
        /* don't leave a vapor cloud if some other gas cloud is already
           present, or when flowing under closed doors so that visibility
           changes aren't mixed with messages about doing such */
        if (!closed_door(x, y) && !visible_region_at(x, y))
            create_gas_cloud(x, y, 1, 0); /* harmless vapor */
    }
}

/* do whatever effects monster has after moving.
   called for both monsters and polyed hero.