[Mod] Gran Turismo 2 plus (bug fixes, restored content and new content)

Discussion in 'Gran Turismo 2' started by pez2k, May 18, 2018.

  1. Masgel

    Masgel

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    51
    Here's some more headache:
    1. That "damage model" function in 2P mode. Is it possible to incorporate it in GT mode in any way?
    2. Would it be viable to apply tyre wear for the GT300 and GT500 championships? I feel like it's too easy to cheese these races by simply choosing SS racing tyre, since all GT300/500 cars come with most tyres from the go.
     
  2. pez2k

    pez2k

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    614
    No idea about the damage model - as it's not used anywhere in GT mode there hasn't been anything documented in the data that could relate to it. Tyre wear was roughly figured out by Submaniac I believe, so it would be possible to enable it. I'm not planning to make any events more difficult though - it's up to the player what sort of challenge they want, and if someone enjoys just cruising through the game with an Escudo or whatever then they should have that choice.
     
    Masgel likes this.
  3. Masgel

    Masgel

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    51
    Do you plan on ousting the few early 90's cars from the 80's sports car championship?
     
  4. pez2k

    pez2k

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    614
    Probably not - they're all just slightly newer trim levels of cars that were in production in the 80s. Only the JZA70 Supra wasn't available in the 80s in that particular spec, but the GA70 and MA70 models were.
     
  5. sir_racealot

    sir_racealot

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    21
    Excuse me for asking, why does the update 5.1 for the European version look very small compared to others?
     
  6. sir_racealot

    sir_racealot

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    21
    And another question: is it possible to put the 5.1 update on an image patched with version 4.1, or do you need a clean image of the game?
     
  7. pez2k

    pez2k

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    614
    The mod is based on the PAL game as it contains the most fixes and the most cars out of the box. The PAL patch size is actually quite representative of the amount of files added or changed - the patches for the other regions are much larger as they're updating those versions of the game to use most of the PAL data. The biggest patches are for the older versions of the US and Japanese releases, which apply all of the updates from the newer versions, then PAL over the top.

    I don't provide upgrade patches from older versions of the mod, so you'll need to start from your original disc image again. It's already a lot of work building 20 different patches for each release, so also providing patches for upgrades from what is now four previous versions is just too much to be feasible.
     
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  8. sir_racealot

    sir_racealot

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    21
    Thank You sir, it's clear now. And Happy New Year to You.
     
  9. 80T

    80T

    Messages:
    33
    Location:
    Romania
    Just a quick one as I don't know if this would fall under the scope of this here project:

    Is there any chance for the Others > Racing modification to be "unlocked" so that once you've won a prize car or purchased a racing modification you could buy it again just so you could change the livery for the cost ? It's been bugging me forever that I can win some cars ex. eduro races just so that the color it's not the one that I wanted. I would gladly pay the Cr for the racing modification / livery color scheme.


    Cheers!
     
    RainbowBlade likes this.
  10. RainbowBlade

    RainbowBlade

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    165
    Or better yet, just make it so that once purchased, can be changed on a whim. I actually thought that this could be done since one can actually go back and look at the different modifications and even select the purchase option (turns out this is not so). I meant to inquire about this myself, but completely forgot... :/
     
    girabyt3 likes this.
  11. pez2k

    pez2k

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    614
    No, the game will only allow a part to be purchased once per car. The chosen colour isn't part of the upgrade data either, setting the car colour is a special action done at the same time as purchasing and equipping the RM part. Editing the savegame or values in RAM is the only way to repaint a car.
     
  12. 80T

    80T

    Messages:
    33
    Location:
    Romania
    Happy new 2021! :cheers::gtpflag:
     
  13. RainbowBlade

    RainbowBlade

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    165
    Would it be possible to add a repaint button type thing that does this? Or, would that be completely impossible without heavily editing the codebase?
     
  14. pez2k

    pez2k

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    614
    That would need the source code of the game, which we don't have and very probably will never have.
     
    RainbowBlade likes this.
  15. DRess_CODE

    DRess_CODE

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    9
    Hello, please tell me if it is possible to transfer some unique wheels from GT1 to GT2? For example, the Toyota Chaser tourer V RM in GT1 has wheels (photo attached) that are not present in GT2.
     

    Attached Files:

  16. pez2k

    pez2k

    Messages:
    614
    Unfortunately not - GT1's wheel textures are angular heptagons while GT2's are circles, and because they're so low-resolution they can't be scaled up to fit.

    The NSX-R LM GT2 fortunately already had its wheels used for an RM in GT2, but for the Chaser LM Submaniac actually had to model a similar set of wheels in 3D, render them face-on, then shrink and tweak the texture until it looked good in-game. This is also why the special colour cars ported from GT1 don't have their unique wheels.
     
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  17. submaniac93

    submaniac93

    Messages:
    1,304
    Location:
    France
    Actually, GT1's wheels are circles, just the faces are 8 quads instead of 16 tris and the mapping isn't perfectly circular. They're still 16-sided cylinders. The resolution is where the issue is. IIRC, GT1's wheels are something like 31x31, and include tire sidewalls, while GT2 has rim-only textures in 47x47. The tradeoff is no more tire tread and writings, but much cleaner and more detailed wheel textures. GT2's wheels are also 16-sided cylinders, but made in a very different way, and nearly 3x as polygon-heavy as GT1's

    Yeah, i had to make the Chaser LM's wheels from scratch in 3D and render them as a 47x47 texture. It works so well i'm certain this is how PD made wheel textures for GT2. I used the hidden wheelshop's screens that were found in GT1's Trial Demo as reference to make them, as it has higher resolution images of pretty much every wheel design used on LMs and RMs in GT1.
    I'd been meaning to make them for GT2 but never got around to actually do it besides for the Chaser
     
    Last edited: Jan 3, 2021
    RainbowBlade likes this.
  18. DRess_CODE

    DRess_CODE

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    9
    :bowdown:Sorry for the inappropriate question, are there any differences between the Honda NSX-R LM GT2 and the Honda NSX-R GT1 Turbo?
     
  19. pez2k

    pez2k

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    614
    Yes - the bodywork is quite significantly different, the GT1 car has fixed headlights instead of popups, more aero work put into it, more vents, wider arches, and so on. The GT2 car uses more stock-looking bodywork. The GT1 car is also quite a bit more powerful (~380ps vs ~650ps in real life, but the GT2 car is at 550ps in Gran Turismo), and should be faster around a track.

    GT1:
    [​IMG]

    GT2:
    [​IMG]
     
  20. girabyt3

    girabyt3 Premium

    Messages:
    1,931
    Location:
    Peru
    sorry... wrong thread...
     
    Last edited: Jan 3, 2021
  21. DRess_CODE

    DRess_CODE

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    9
    Hello, I bought a Peugeot 206 gti, but in the garage this car is marked as Peugeot 106 1.6 s16, please fix this error.
     

    Attached Files:

  22. Masgel

    Masgel

    Messages:
    51
    I'm guessing it was a copy-paste work if the GT mode features 2P settings even if it doesn't need to?
     
  23. pez2k

    pez2k

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    614
    It's a bug from the original US version which isn't normally noticeable due to the Exxon version of the car being used. It's already on the to-do list.

    I'm not entirely sure what you mean - if you're referring to the settings menu before entering GT mode, then yeah, it's the same on both discs as it's editing one common area of settings.
     
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  24. Masgel

    Masgel

    Messages:
    51
    So I'm guessing that removing the 2P settings part from GT mode is going to be out of the question anyway? Even though it serves no real purpose for GT mode in the first place.
     
  25. pez2k

    pez2k

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    614
    Yeah, those menus are in the executable somewhere, they're not part of the GT mode menus.
     
  26. Masgel

    Masgel

    Messages:
    51
    Is there a reason for the massive price difference between the Lotus Esprit V8 GT (87320 c) and the V8 SE (226940 c) models? Only main difference I see between these two cars is the rear wing.
     
    RainbowBlade likes this.
  27. Dave A

    Dave A Premium

    Messages:
    27,859
    Location:
    United Kingdom
    Not really, AFAIK the GT and SE were quite similar cars IRL, perhaps it was meant to be 126,940Cr but there's nothing to actually confirm the price is a bug/mistake so just as much chance it's meant to be that much in the game. In real life the SE was the more expensive of the two but the differences weren't huge.

    Probably not relevent to this GT2 restoration mod though.
     
    Last edited: Jan 5, 2021
    RainbowBlade likes this.
  28. pez2k

    pez2k

    Messages:
    614
    The prices are just wacky in general - I swapped the A4 and S4 prices and swapped the Cougar prices because they seemed really obviously wrong, but there are so many that don't make much sense.
     
    RainbowBlade likes this.
  29. tiagoadcosta

    tiagoadcosta

    Messages:
    19
    Location:
    Portugal
    Great Work pez2k!!!
    I'm wondering if something could be done about forcing some race restrictions. Maybe for a more realistic/harder version of the mod.
    Please check this post i did years ago:

    https://www.gtplanet.net/forum/threads/modding-race-events-restrictions.357045/#post-11887383
     
  30. pez2k

    pez2k

    Messages:
    614
    The game doesn't support any restrictions other than what it currently uses - aspiration, RM / non-RM, power limit, drivetrain, and entry whitelists.

    The manufacturer race entry whitelists are limited to a maximum of 32 cars, while Suzuki alone has 20 Kei cars (as RM versions are counted as separate entries in the list). The Impreza one-make event likely doesn't have a RM version for that reason - there are way too many Imprezas to fit in one entry list if RMs are included.
     
    RainbowBlade likes this.