int pc_useitem(struct map_session_data *sd,int n) {
	int64 tick = timer->gettick();
	int amount, nameid, i, char_id = 0;
	struct script_code *item_script;

	nullpo_ret(sd);

	if( sd->npc_id || sd->state.workinprogress&1 ){
		/* TODO: add to clif->messages enum */
#ifdef RENEWAL
		clif->msg(sd, 0x783); // TODO look for the client date that has this message.
#endif
		return 0;
	}

	if( sd->status.inventory[n].nameid <= 0 || sd->status.inventory[n].amount <= 0 )
		return 0;

#ifdef ADELAYS
	//Adelays in pc_useitem
	if (!adelays_canuseitem(sd->status.inventory[n].nameid, sd->ud.canact_tick)){
		return 0;
	}
#endif

	if( sd->state.only_walk )
		return 0;

	if( !pc->isUseitem(sd,n) )
		return 0;

	// Store information for later use before it is lost (via pc->delitem) [Paradox924X]
	nameid = sd->inventory_data[n]->nameid;
	if( sd->status.inventory[n].card[0] == CARD0_CREATE )
	{ // Do not allow use BG - Ancient Items on invalid maps
		char_id = MakeDWord(sd->status.inventory[n].card[2],sd->status.inventory[n].card[3]);
		if( battle_config.bg_reserved_char_id && char_id == battle_config.bg_reserved_char_id && !map_bg_items(sd->bl.m) )
			return 0;
		if( battle_config.woe_reserved_char_id && char_id == battle_config.woe_reserved_char_id && !map_gvg_items(sd->bl.m) )
			return 0;
	}