Thread View: alt.games.microprose.transport-tyc
6 messages
6 total messages
Started by Marcin Grzegorczyk
Tue, 11 May 2004 10:30
IDB update, routing in TTD, aiboost
Author: Marcin Grzegorczyk
Date: Tue, 11 May 2004 10:30
Date: Tue, 11 May 2004 10:30
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Hello all, Last weekend I took it upon myself to finish annotating TTD's route tracing code (which TTD uses to route vehicles, to search for the nearest railway or road depot, and to update the state of signals) and, after a long break, release an updated IDA database, available at <http://kufel.immt.pwr.wroc.pl/~mgrzegor/ttdpatch/ida/> as usual, for those who aren't daunted by 80386 assembly. Thus, we now have the definite answer to the old question: how far TTD 'looks ahead' when trying to find a route to the destination? The answer is: for trains and road vehicles, the limit is 64 tiles or 7 junctions (whichever is reached first); for ships, the limit is 50 tiles or 4 turns. (This does not answer the question of how TTD selects the 'best' route; that'll need more investigation, which I hope I'll have time to do in a couple of next weeks.) Now I also know for 100% sure what I've long suspected: the 'aiboost' switch never worked as expected because it patched the wrong code (the code that traces existing routes, not the AI route planning code). That's also why it was a major CPU hog even if no AI company was present... The 'aiboost' switch in its old form could result in a minor routing improvement, though, so it was not entirely useless. (In the few latest alphas the switch does nothing.) That's it for now, have to get back to my PhD thesis... :-) -- Marcin Grzegorczyk
Re: IDB update, routing in TTD, aiboost
Author: Michael Blunck
Date: Tue, 11 May 2004 11:21
Date: Tue, 11 May 2004 11:21
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Marcin Grzegorczyk wrote: [important work on IDB] > That's it for now, have to get back to my PhD thesis... Well, I hope you´ll finish this soon to have again more time for other things. :o) regard Michael
TTD internals corrected as well
Author: Marcin Grzegorczyk
Date: Tue, 11 May 2004 14:36
Date: Tue, 11 May 2004 14:36
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I almost forgot. My TTD savegame internals file, <http://kufel.immt.pwr.wroc.pl/~mgrzegor/sv1tool/TTD-locations.html>, has been updated too. The description of vehicle structure field 0x62 for railway vehicles used to replicate an error found in a comment in TTDPatch sources (ttdprot.ah). I'm not sure how I managed to overlook this error, but it's OK now, at least in my internals file. -- Marcin Grzegorczyk
Re: IDB update, routing in TTD, aiboost
Author: Afoklala
Date: Thu, 13 May 2004 10:56
Date: Thu, 13 May 2004 10:56
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Op Tue, 11 May 2004 12:30:57 +0200 schreef Marcin Grzegorczyk: > Now I also know for 100% sure what I've long suspected: the 'aiboost' > switch never worked as expected because it patched the wrong code (the > code that traces existing routes, not the AI route planning code). So, would that mean that it is now possible to change things so that the RIGHT code will be patched? > That's it for now, have to get back to my PhD thesis... :-) You do that, first things first! Good luck! -- Jan Willem from Odijk, Netherlands jw dot van dot dormolen at hccnet dot nl New to this newsgroup? Please read the Frequently Asked Questions (FAQ) at <http://www.tt-forums.net/faq/>. Thanks. I hate it when people tell me I cannot take criticism.
Re: IDB update, routing in TTD, aiboost
Author: Marcin Grzegorczyk
Date: Fri, 14 May 2004 09:36
Date: Fri, 14 May 2004 09:36
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Afoklala wrote: > Op Tue, 11 May 2004 12:30:57 +0200 schreef Marcin Grzegorczyk: >>Now I also know for 100% sure what I've long suspected: the 'aiboost' >>switch never worked as expected because it patched the wrong code (the >>code that traces existing routes, not the AI route planning code). > > So, would that mean that it is now possible to change things so that the > RIGHT code will be patched? Maybe; at least we know now which procedures are responsible for the AI's construction planning. The question still open is, *how* to patch the code to get good results. -- Marcin Grzegorczyk
Re: IDB update, routing in TTD, aiboost
Author: Afoklala
Date: Sat, 15 May 2004 08:35
Date: Sat, 15 May 2004 08:35
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Op Fri, 14 May 2004 11:36:07 +0200 schreef Marcin Grzegorczyk: > Afoklala wrote: >> Op Tue, 11 May 2004 12:30:57 +0200 schreef Marcin Grzegorczyk: >>>Now I also know for 100% sure what I've long suspected: the 'aiboost' >>>switch never worked as expected because it patched the wrong code (the >>>code that traces existing routes, not the AI route planning code). >> >> So, would that mean that it is now possible to change things so that the >> RIGHT code will be patched? > > Maybe; at least we know now which procedures are responsible for the > AI's construction planning. > > The question still open is, *how* to patch the code to get good results. OK, I won't hold my breath then. It would be really great though... proper AI. -- Jan Willem from Odijk, Netherlands jw dot van dot dormolen at hccnet dot nl New to this newsgroup? Please read the Frequently Asked Questions (FAQ) at <http://www.tt-forums.net/faq/>. Thanks. If you try to fail, and succeed, which have you done?
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