/*==========================================
* Initiates a trade request.
*------------------------------------------*/
void trade_traderequest(struct map_session_data *sd, struct map_session_data *target_sd)
{
nullpo_retv(sd);
if (map[sd->bl.m].flag.notrade) {
clif_displaymessage (sd->fd, msg_txt(272));
return; //Can't trade in notrade mapflag maps.
}
if (target_sd == NULL || sd == target_sd) {
clif_tradestart(sd, 1); // character does not exist
return;
}
if (target_sd->npc_id)
{ //Trade fails if you are using an NPC.
clif_tradestart(sd, 2);
return;
}
if (!battle_config.invite_request_check) {
if (target_sd->guild_invite > 0 || target_sd->party_invite > 0 || target_sd->adopt_invite) {
clif_tradestart(sd, 2);
return;
}
}
if ( sd->trade_partner != 0 ) { // If a character tries to trade to another one then cancel the previous one
struct map_session_data *previous_sd = map_id2sd(sd->trade_partner);
if( previous_sd ){
previous_sd->trade_partner = 0;
clif_tradecancelled(previous_sd);
} // Once cancelled then continue to the new one.
sd->trade_partner = 0;
clif_tradecancelled(sd);
}
if (target_sd->trade_partner != 0) {
clif_tradestart(sd, 2); // person is in another trade
return;
}
if (!pc_can_give_items(sd) || !pc_can_give_items(target_sd)) //check if both GMs are allowed to trade
{
clif_displaymessage(sd->fd, msg_txt(246));
clif_tradestart(sd, 2); // GM is not allowed to trade
return;
}
// Players can not request trade from far away, unless they are allowed to use @trade.
if (!pc_can_use_command(sd, "trade", COMMAND_ATCOMMAND) &&
(sd->bl.m != target_sd->bl.m || !check_distance_bl(&sd->bl, &target_sd->bl, TRADE_DISTANCE))) {
clif_tradestart(sd, 0); // too far
return ;
}
target_sd->trade_partner = sd->status.account_id;
sd->trade_partner = target_sd->status.account_id;
clif_traderequest(target_sd, sd->status.name);
}
// This function only check if the mail operations are valid
bool mail_invalid_operation(struct map_session_data *sd)
{
if( !map[sd->bl.m].flag.town && !pc_can_use_command(sd, "mail", COMMAND_ATCOMMAND) )
{
ShowWarning("clif_parse_Mail: char '%s' trying to do invalid mail operations.\n", sd->status.name);
return true;
}
return false;
}
/*==========================================
* Reply to a trade-request.
* Type values:
* 0: Char is too far
* 1: Character does not exist
* 2: Trade failed
* 3: Accept
* 4: Cancel
* Weird enough, the client should only send 3/4
* and the server is the one that can reply 0~2
*------------------------------------------*/
void trade_tradeack (struct map_session_data *sd, int type)
{
struct map_session_data *tsd;
nullpo_retv (sd);
sd->state.can_tradeack = 0;
if (sd->state.trading || !sd->trade_partner)
return; //Already trading or no partner set.
if ( (tsd = map_id2sd (sd->trade_partner)) == NULL) {
clif_tradestart (sd, 1); // character does not exist
sd->trade_partner = 0;
return;
}
if (tsd->state.trading || tsd->trade_partner != sd->bl.id) {
clif_tradestart (sd, 2);
sd->trade_partner = 0;
return; //Already trading or wrong partner.
}
if (type == 4) { // Cancel
clif_tradestart (tsd, type);
clif_tradestart (sd, type);
sd->state.deal_locked = 0;
sd->trade_partner = 0;
tsd->state.deal_locked = 0;
tsd->trade_partner = 0;
return;
}
if (type != 3)
return; //If client didn't send accept, it's a broken packet?
// Players can not request trade from far away, unless they are allowed to use @trade.
// Check here as well since the original character could had warped.
if (!pc_can_use_command (sd, "trade", COMMAND_ATCOMMAND) &&
(sd->bl.m != tsd->bl.m || !check_distance_bl (&sd->bl, &tsd->bl, TRADE_DISTANCE))) {
clif_tradestart (sd, 0); // too far
sd->trade_partner = 0;
tsd->trade_partner = 0;
return;
}
//Check if you can start trade.
if (sd->npc_id || sd->state.vending || sd->state.buyingstore || sd->state.storage_flag ||
tsd->npc_id || tsd->state.vending || tsd->state.buyingstore || tsd->state.storage_flag) {
//Fail
clif_tradestart (sd, 2);
clif_tradestart (tsd, 2);
sd->state.deal_locked = 0;
sd->trade_partner = 0;
tsd->state.deal_locked = 0;
tsd->trade_partner = 0;
return;
}
//Initiate trade
sd->state.trading = 1;
tsd->state.trading = 1;
memset (&sd->deal, 0, sizeof (sd->deal));
memset (&tsd->deal, 0, sizeof (tsd->deal));
clif_tradestart (tsd, type);
clif_tradestart (sd, type);
}
