System.ArgumentOutOfRangeException at ORTS.AITrain.ProcessEndOfPath (X3169, 3DTrains WP 3rd Sub, CZ Eastbound)

[Derek Morton]

running wp3.
I was not at the controls at the time.

[Carlo Santucci (carlosanit1)]

This happened to the autopiloted train. Had it arrived at its last station?

[Derek Morton (derek-a)]

Hi Carlo,

As it was a crash to desktop and I was not at the controls, I am unable
to confirm.

cheers
Derek

On 25/06/2015 6:33, Carlo Santucci wrote:
> This happened to the autopiloted train. Had it arrived at its last
> station?
>

[James Ross (twpol)]

Might be the same as bug 1213361, though that has no further details either.

[Carlo Santucci (carlosanit1)]

James, thanks for the link.
The immediate cause is quite surely the same ( PresentPosition[0].RouteListIndex = -1 ), that is train front off path, the initial cause however is probably different. In bug 1213361 the train was voluntarily put off path, while this is not Derek's case (computer unattended and autopiloted player train running). A check on RouteListIndex == -1 should be added, however what should be done then? If it is a pure AI train, it could be simply removed, as standard for AI trains off path, but if it is the autopiloted player train this would replace a crash with a game end, which has the same effect. I see that in Derek's case ProcessEndOfPath is called when the train is at a station. So maybe the path is terminated just within (or immediately after) the station's platform.
Derek, could you pls. attach a screenshot of the path's end taken with the MSTS activity editor?

[Derek Morton (derek-a)]

Hi Carlo,

Is this pic good enough?

cheers
Derek

On 25/06/2015 19:09, Carlo Santucci wrote:
> James, thanks for the link.
> The immediate cause is quite surely the same ( PresentPosition[0].RouteListIndex = -1 ), that is train front off path, the initial cause however is probably different. In bug 1213361 the train was voluntarily put off path, while this is not Derek's case (computer unattended and autopiloted player train running). A check on RouteListIndex == -1 should be added, however what should be done then? If it is a pure AI train, it could be simply removed, as standard for AI trains off path, but if it is the autopiloted player train this would replace a crash with a game end, which has the same effect. I see that in Derek's case ProcessEndOfPath is called when the train is at a station. So maybe the path is terminated just within (or immediately after) the station's platform.
> Derek, could you pls. attach a screenshot of the path's end taken with the MSTS activity editor?
>

[Carlo Santucci (carlosanit1)]

Thanks Derek,
unfortunately it's not an OR screenshot what I need. You should open the MSTS activity editor, load the problematic activity, go select the player service, then its path, entering the path editor, and then you should enlarge the final part of the path and take a screenshot.

[Derek Morton (derek-a)]

Hi Carlo,

second try

On 26/06/2015 1:35, Carlo Santucci wrote:
> Thanks Derek,
> unfortunately it's not an OR screenshot what I need. You should open the MSTS activity editor, load the problematic activity, go select the player service, then its path, entering the path editor, and then you should enlarge the final part of the path and take a screenshot.
>

[Carlo Santucci (carlosanit1)]

Thanks Derek, that's the right one, and it's as I suspected. The path ends just before the switch. For some reason I expect the train reached the switch (off path) and stopped. The method called is not protected against off path positions.

[Carlo Santucci (carlosanit1)]

First fix in x.3176.
Derek, could you pls. check if it avoids the crash? The program should now bypass the point that causes the crash, but I don't know if it crashes a bit further, because I can't kill an autopiloted train. If necessary a check shall be added further down the code.

[Carlo Santucci (carlosanit1)]

By the way, if you have an intermediate save you can restart from it. Pls. run in autopilot mode as happened when you had the crash.

[Derek Morton (derek-a)]

Hi Carlo,

No crash, and the train stops right next to the point.

cheers

On 27/06/2015 3:14, Carlo Santucci wrote:
> By the way, if you have an intermediate save you can restart from it.
> Pls. run in autopilot mode as happened when you had the crash.
>

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