/// <summary>
/// This updates the trade. This is called at an interval of a
/// default of 800ms, not including the execution time of the
/// method itself.
/// </summary>
/// <returns><c>true</c> if the other trade partner performed an action; otherwise <c>false</c>.</returns>
public bool Poll()
{
bool otherDidSomething = false;
if (!TradeStarted)
{
tradeStarted = true;
// since there is no feedback to let us know that the trade
// is fully initialized we assume that it is when we start polling.
if (OnAfterInit != null)
{
OnAfterInit();
}
}
TradeStatus status = session.GetStatus();
if (status == null)
{
throw new TradeException("The web command to get the trade status failed.");
}
switch (status.trade_status)
{
// Nothing happened. i.e. trade hasn't closed yet.
case 0:
break;
// Successful trade
case 1:
HasTradeCompletedOk = true;
return(otherDidSomething);
// All other known values (3, 4) correspond to trades closing.
default:
if (OnError != null)
{
OnError("Trade was closed by other user. Trade status: " + status.trade_status);
}
OtherUserCancelled = true;
return(otherDidSomething);
}
if (status.newversion)
{
// handle item adding and removing
session.Version = status.version;
TradeEvent trdEvent = status.GetLastEvent();
TradeEventType actionType = (TradeEventType)trdEvent.action;
HandleTradeVersionChange(status);
return(true);
}
else if (status.version > session.Version)
{
// oh crap! we missed a version update abort so we don't get
// scammed. if we could get what steam thinks what's in the
// trade then this wouldn't be an issue. but we can only get
// that when we see newversion == true
throw new TradeException("The trade version does not match. Aborting.");
}
var events = status.GetAllEvents();
foreach (var tradeEvent in events)
{
if (eventList.Contains(tradeEvent))
{
continue;
}
//add event to processed list, as we are taking care of this event now
eventList.Add(tradeEvent);
bool isBot = tradeEvent.steamid == MySteamId.ConvertToUInt64().ToString();
// dont process if this is something the bot did
if (isBot)
{
continue;
}
otherDidSomething = true;
/* Trade Action ID's
* 0 = Add item (itemid = "assetid")
* 1 = remove item (itemid = "assetid")
* 2 = Toggle ready
* 3 = Toggle not ready
* 4 = ?
* 5 = ? - maybe some sort of cancel
* 6 = ?
* 7 = Chat (message = "text") */
switch ((TradeEventType)tradeEvent.action)
{
case TradeEventType.ItemAdded:
FireOnUserAddItem(tradeEvent);
break;
case TradeEventType.ItemRemoved:
FireOnUserRemoveItem(tradeEvent);
break;
case TradeEventType.UserSetReady:
otherIsReady = true;
OnUserSetReady(true);
break;
case TradeEventType.UserSetUnReady:
otherIsReady = false;
OnUserSetReady(false);
break;
case TradeEventType.UserAccept:
OnUserAccept();
break;
case TradeEventType.UserChat:
OnMessage(tradeEvent.text);
break;
default:
// Todo: add an OnWarning or similar event
if (OnError != null)
{
OnError("Unknown Event ID: " + tradeEvent.action);
}
break;
}
}
// Update Local Variables
if (status.them != null)
{
otherIsReady = status.them.ready == 1;
meIsReady = status.me.ready == 1;
}
if (status.logpos != 0)
{
session.LogPos = status.logpos;
}
return(otherDidSomething);
}
