int obtain( Character& ch ) override {
if( !what ) {
return INT_MIN;
}
// invalidate this item_location
auto it = get_item();
what = nullptr;
int mv = 0;
bool was_worn = false;
item *holster = who->find_parent( *it );
if( holster && who->is_worn( *holster ) && holster->can_holster( *it, true ) ) {
// Immediate parent is a worn holster capable of holding this item
auto ptr = dynamic_cast<const holster_actor *>( holster->type->get_use( "holster" )->get_actor_ptr() );
mv += dynamic_cast<player *>( who )->item_handling_cost( *it, false, ptr->draw_cost );
was_worn = true;
} else {
// Unpack the object followed by any nested containers starting with the innermost
mv += dynamic_cast<player *>( who )->item_handling_cost( *it );
for( auto obj = who->find_parent( *it ); obj && who->find_parent( *obj ); obj = who->find_parent( *obj ) ) {
mv += dynamic_cast<player *>( who )->item_handling_cost( *obj );
}
}
if( who->is_worn( *it ) ) {
it->on_takeoff( *( dynamic_cast<player *>( who ) ) );
} else if( !was_worn ) {
mv *= INVENTORY_HANDLING_FACTOR;
}
if( &ch != who ) {
// @todo implement movement cost for transfering item between characters
}
who->moves -= mv;
if( &ch.i_at( ch.get_item_position( it ) ) == it ) {
// item already in target characters inventory at base of stack
return ch.get_item_position( it );
} else {
return ch.get_item_position( &ch.i_add( who->i_rem( it ) ) );
}
}
std::list<item> visitable<Character>::remove_items_with( const
std::function<bool( const item &e )> &filter, int count )
{
auto ch = static_cast<Character *>( this );
std::list<item> res;
if( count <= 0 ) {
return res; // nothing to do
}
// first try and remove items from the inventory
res = ch->inv.remove_items_with( filter, count );
count -= res.size();
if( count == 0 ) {
return res;
}
// then try any worn items
for( auto iter = ch->worn.begin(); iter != ch->worn.end(); ) {
if( filter( *iter ) ) {
iter->on_takeoff( *ch );
res.splice( res.end(), ch->worn, iter++ );
if( --count == 0 ) {
return res;
}
} else {
remove_internal( filter, *iter, count, res );
if( count == 0 ) {
return res;
}
++iter;
}
}
// finally try the currently wielded item (if any)
if( filter( ch->weapon ) ) {
res.push_back( ch->remove_weapon() );
count--;
} else {
remove_internal( filter, ch->weapon, count, res );
}
return res;
}
