Function calc_capacity

src/hack.c:4371–4382

* Returns 0 if below normal capacity, or the number of "capacity units" * over the normal capacity the player is loaded. Max is 5. */

 * over the normal capacity the player is loaded.  Max is 5.
 */
int
calc_capacity(int xtra_wt)
{
    int cap, wt = inv_weight() + xtra_wt;

    if (wt <= 0)
        return UNENCUMBERED;
    if (gw.wc <= 1)
        return OVERLOADED;
    cap = (wt * 2 / gw.wc) + 1;
    return min(cap, OVERLOADED);
}

int
near_capacity(void)