/**
* Calculate how much of an item is can be carried in the inventory or quiver.
*
* Optionally only return a positive value if there is already a similar object.
*/
int inven_carry_num(const struct object *obj, bool stack)
{
struct object *gear_obj;
int i, num_left = obj->number;
/* Check for similarity */
if (stack) {
for (gear_obj = player->gear; gear_obj; gear_obj = gear_obj->next) {
/* Skip equipped items and non-objects */
if (object_is_equipped(player->body, gear_obj))
continue;
if (!gear_obj)
continue;
/* Check if the two items can be combined */
if (object_stackable(gear_obj, obj, OSTACK_PACK))
break;
}
/* No similar object, so no stacking */
if (!gear_obj) return 0;
}
/* Free inventory slots, so there is definitely room */
if (pack_slots_used(player) < z_info->pack_size) return obj->number;
/* Absorb as many as we can in the quiver */
num_left -= quiver_absorb_num(obj);
/* See if we can add to a part full inventory slot */
for (i = 0; i < z_info->pack_size; i++) {
struct object *inven_obj = player->upkeep->inven[i];
if (!inven_obj) continue;
if (!object_stackable(inven_obj, obj, OSTACK_PACK)) continue;
num_left -= z_info->stack_size - inven_obj->number;
}
/* Return the number we can absorb */
num_left = MAX(num_left, 0);
return obj->number - num_left;
}
/**
* Calculate how much of an item is can be carried in the inventory or quiver.
*
* Optionally only return a positive value if there is already a similar object.
*/
int inven_carry_num(const struct object *obj, bool stack)
{
/* Check for similarity */
if (stack) {
struct object *gear_obj;
for (gear_obj = player->gear; gear_obj; gear_obj = gear_obj->next) {
if (!object_is_equipped(player->body, gear_obj) &&
object_stackable(gear_obj, obj, OSTACK_PACK)) {
break;
}
}
/* No similar object, so no stacking */
if (!gear_obj) {
return 0;
}
}
/* Free inventory slots, so there is definitely room */
if (pack_slots_used(player) < z_info->pack_size) {
return obj->number;
} else {
int i;
/* Absorb as many as we can in the quiver */
int num_left = obj->number - quiver_absorb_num(obj);
/* See if we can add to a part full inventory slot */
for (i = 0; i < z_info->pack_size; i++) {
struct object *inven_obj = player->upkeep->inven[i];
if (inven_obj && object_stackable(inven_obj, obj, OSTACK_PACK)) {
num_left -= inven_obj->kind->base->max_stack - inven_obj->number;
}
}
/* Return the number we can absorb */
return obj->number - MAX(num_left, 0);
}
}
