Gran Turismo 4 Modding Discussion

[TheAdmiester]

Does this mean that it's going to be possible to add all the TT exclusive tracks and other potential layouts as seperate tracks with their own events and such? I have the mod that replaces some tracks with the TT tracks and it's such a janky mess sometimes.

It is possible with a caveat. As you can see in the pic you quoted they're already added as separate tracks, which supersedes the old hacky way (just cramming the tracks in and replacing GT4 ones without touching the UI). What isn't particularly possible yet is making the AI good at them, as their pathing is set up for the AI to drive bikes on them, not cars.

That, combined with the fact that the game can only have so many unique events, means I'm not going to bother wasting event slots on them and will just have them available in arcade mode (and possibly World Circuits).

 

[FRR35H]

It is possible with a caveat. As you can see in the pic you quoted they're already added as separate tracks, which supersedes the old hacky way (just cramming the tracks in and replacing GT4 ones without touching the UI). What isn't particularly possible yet is making the AI good at them, as their pathing is set up for the AI to drive bikes on them, not cars.

That, combined with the fact that the game can only have so many unique events, means I'm not going to bother wasting event slots on them and will just have them available in arcade mode (and possibly World Circuits).

Valencia, at least, is setup already on GTPSP, would this not help the port? Using those AI lines?

 

[Korza]

Valencia, at least, is setup already on GTPSP, would this not help the port? Using those AI lines?

Unlikely as GTPSP runs on a different game engine.

 

[TheAdmiester]

Finally reached a point where I think this is presentable...

I thought this was quite a glaring omission from the English versions, and I was never really a fan of the way the JP version crammed all of this text into a single-line scrolling tooltip, so I wanted to try and make it work better.
Descriptions are taken from GT5/6 and reworded where appropriate (primarily to fit the available space).

 

[wolop953]

Will these sorts of features be added as well?

 

[TheAdmiester]

Will these sorts of features be added as well?

No, races use lesser-detailed models for a reason.

 

[Nenkai]

Everything is the way they are in the base game for good reasons (such as limiting memory usage), it will not be touched because it may break the game in rare, unexpected ways. I'm sure this is not TheAdmiester's intent, others perhaps.

 

[TheAdmiester]

Forgot to post this one as I finished it quite late last night - working 4:3 scaling for the car description UI (ignore the Description/Purchase labels underneath as they haven't been touched yet):

As the game has no way of checking when text runs beyond its container I figured the best solution was to just scale the entire description down when it detects you're in 4:3 mode. Not the prettiest solution as it leaves some blank space at the bottom, but rather that than having text cut off!

 

[TheAdmiester]

Family Cup has been replaced with a per-track Event Synthesizer:

Thought it would be nice to offer the option to generate an event on a chosen track as well as the random option on the main map - it's effectively the same as Family Cup but this means it's an actual event that's worth something.
You might notice I also switched the icons around - I figured the beginner driver symbol makes more sense for practice and the helmet icon makes more sense for an actual race.

 

[Keroyon]

The amount of work put in here by you guys is unbelievable, kudos to you all !

 

[evo_fan]

am wondering something...do the upgrade of turbos change the BOV on the mod?

 

[TheAdmiester]

am wondering something...do the upgrade of turbos change the BOV on the mod?

Not possibly sadly. The game just has one hardcoded turbo sound applied to every car that has one.

 

[Vangormel]

Absolutely can't wait for the release of this, great job so far! Some things I would personally love to see in this if possible:
Checking what kind of opponents you will face in an event WITHOUT entering the event first (like Typical Opponents in later games), maybe as an extra menu button (next to Entry and Preview for example).
Set driving aids to 0/0/0 by default.

 

[TheAdmiester]

Absolutely can't wait for the release of this, great job so far! Some things I would personally love to see in this if possible:
Checking what kind of opponents you will face in an event WITHOUT entering the event first (like Typical Opponents in later games), maybe as an extra menu button (next to Entry and Preview for example).
Set driving aids to 0/0/0 by default.

First one is a good suggestion, I haven't checked if it's possible in 4 (as events are handled quite differently) but I can certainly look into it.
The second is something that personally annoys me too. It should be easy to set the default TCS part values to stock, but I want to give it some more thought in case it ends up making things beginner-unfriendly.

 

[evo_fan]

Not possibly sadly. The game just has one hardcoded turbo sound applied to every car that has one.

oh i see, i didn´t knew gt4 had them hardcoded as the sounds weren´t
by the way will the change of intakes/exhaust change the sound like on the original?

 

[TheAdmiester]

oh i see, i didn´t knew gt4 had them hardcoded as the sounds weren´t
by the way will the change of intakes/exhaust change the sound like on the original?

Only for some. The original system basically funnelled every car towards 10 or so generic sounds as the racing exhaust level, most of which were bad or didn't even match the engine's cylinder count/configuration. Most cars will have the same sound for stock/sport/semi/race, but where good examples are available I'll add different upgrade sounds.

 

[evo_fan]

Only for some. The original system basically funnelled every car towards 10 or so generic sounds as the racing exhaust level, most of which were bad or didn't even match the engine's cylinder count/configuration. Most cars will have the same sound for stock/sport/semi/race, but where good examples are available I'll add different upgrade sounds.

did u took sounds from gt7 aswell? im really excited to see how this mod will be like ^^
also about the mods, i have a 4age 16V smallport fully stock out of my ae92 gti if you need samples for the ae86s

 

[TheAdmiester]

did u took sounds from gt7 aswell? im really excited to see how this mod will be like ^^
also about the mods, i have a 4age 16V smallport fully stock out of my ae92 gti if you need samples for the ae86s

Sounds are taken from a mixture of games including newer GT/Forza etc.
If you can get some good recordings of your car and I feel they'll be usable in-game, I can definitely use them and credit you.

 

[evo_fan]

Sounds are taken from a mixture of games including newer GT/Forza etc.
If you can get some good recordings of your car and I feel they'll be usable in-game, I can definitely use them and credit you.

i see, i didn´t knew u could put forza sounds in GT
also i think i can get some good recordings once my new phone arrives
so far i have two "good" recordings but.. i don´t know how to send them here xD

 

[60fpshacks]

Sounds are taken from a mixture of games including newer GT/Forza etc.
If you can get some good recordings of your car and I feel they'll be usable in-game, I can definitely use them and credit you.

The NFS games on PC have some good ones, though I'm not sure if there is a converter or not. Maybe vgmstream could with the right parameters.

Also: I had no idea the Japanese version had car information. I always hated that the Western ports were missing that great feature.

 

[TheAdmiester]

Bit of inactivity in this thread but not for lack of work.

I've spent the past weekend or so polishing up bits of sounds, and rebalancing some missions and a licence that were slightly broken by GT4O's changes (Audi R8 Super licence lap at Infineon, Ford GT Spec II mission at Laguna, Plymouth Superbird mission at Seattle, and the Corvette C5R mission at Infineon).

Perhaps more interestingly I've made a branch of the mod - it's based on Spec II but it won't be forced on normal Spec II users - a mod that randomizes every prize car in the game based on your username, aptly named GT4 Randomizer. A few of us in Discord have been having a lot of fun with this, playing through and trying to not buy or upgrade cars, only using rewards from each licence/event/mission/etc. to complete other events and see which path the random seed sets us on.

This change has necessitated a few subsequent changes. The first of which is quite major - as a few streamers have taken interest in this mod, including some non-English folks, I decided to tackle re-adding multi-language support from GT4 PAL, including the initial language select boot screen:

And a new introduction on the name entry menu, as the changes are based on the name you input. Also translated to each language of course:

And then a huge improvement to the keyboard provided by @ddm - support for manually changing case (originally the first letter was always capitalised and nothing else), as well as inputting numbers and symbols. L1 and R1 toggle caps and symbols respectively, or you can hit the new keys on the keyboard to toggle them. I've also increased the character limit to 30 over the original 10.
This one is a huge change for the randomizer as the support for longer names and more characters means you can create way, way, way more unique seeds for the prizes to be generated from.

And then from there everything is shuffled, meaning you can have some fun/weird combinations of prizes such as these ones @Nebuc72 got while testing:

I think this is quite a promising mod with a lot of fun potential for self-challenge runs. The fact that we're already getting some streamers interested in playing it when it's ready is also a great sign for drawing some interest towards GT4 modding, so I'm quite happy with how things are going!

 

[GTP_reddevil]

Bit of inactivity in this thread but not for lack of work.

I've spent the past weekend or so polishing up bits of sounds, and rebalancing some missions and a licence that were slightly broken by GT4O's changes (Audi R8 Super licence lap at Infineon, Ford GT Spec II mission at Laguna, Plymouth Superbird mission at Seattle, and the Corvette C5R mission at Infineon).

Perhaps more interestingly I've made a branch of the mod - it's based on Spec II but it won't be forced on normal Spec II users - a mod that randomizes every prize car in the game based on your username, aptly named GT4 Randomizer. A few of us in Discord have been having a lot of fun with this, playing through and trying to not buy or upgrade cars, only using rewards from each licence/event/mission/etc. to complete other events and see which path the random seed sets us on.

This change has necessitated a few subsequent changes. The first of which is quite major - as a few streamers have taken interest in this mod, including some non-English folks, I decided to tackle re-adding multi-language support from GT4 PAL, including the initial language select boot screen:
View attachment 1255070

And a new introduction on the name entry menu, as the changes are based on the name you input. Also translated to each language of course:
View attachment 1255071

And then a huge improvement to the keyboard provided by @ddm - support for manually changing case (originally the first letter was always capitalised and nothing else), as well as inputting numbers and symbols. L1 and R1 toggle caps and symbols respectively, or you can hit the new keys on the keyboard to toggle them. I've also increased the character limit to 30 over the original 10.
This one is a huge change for the randomizer as the support for longer names and more characters means you can create way, way, way more unique seeds for the prizes to be generated from.
View attachment 1255072

And then from there everything is shuffled, meaning you can have some fun/weird combinations of prizes such as these ones @Nebuc72 got while testing:

I think this is quite a promising mod with a lot of fun potential for self-challenge runs. The fact that we're already getting some streamers interested in playing it when it's ready is also a great sign for drawing some interest towards GT4 modding, so I'm quite happy with how things are going!

Random Prize Cars - now that is a true game changer!

Can’t wait to see playthroughs on YouTube in the future where the sense of random dictates the order of the playthrough!

Sadly I can’t see myself acquiring this mod when ready cause I have no proper idea how installing it would work and I believe it’s a PC mod? I think you said earlier but can’t exactly remember where.

 

[TheAdmiester]

Random Prize Cars - now that is a true game changer!

Can’t wait to see playthroughs on YouTube in the future where the sense of random dictates the order of the playthrough!

Sadly I can’t see myself acquiring this mod when ready cause I have no proper idea how installing it would work and I believe it’s a PC mod? I think you said earlier but can’t exactly remember where.

It will have detailed instructions so anyone should be able to install it just fine. It's only being tested on PCSX2 so far, and I'd say that is the only part that takes any effort to set up (and GTP rules mean I can't say much more about playing it on PC) - ideally I'm hoping to have it work on real hardware but it's not a huge priority right now as I already have a lot to finish.

 

[TheAdmiester]

I've had an idea that I'm considering that I'd like to get peoples' feedback on, mainly because it's effectively removing content from the original game, but for a good cause. As it stands, GT4's save file structure can only hold records for 768 races - individual races, not events, so something like the All Japan GT Championship takes up 10 records. Including a handful of events that are unused, vanilla GT4 is sitting at around 720 or 730 races, meaning we have room for a few more but not an awful lot.

I'm thinking of trimming the fat in some areas where GT4 feels like a bit of a grind, and right now my sights are set on the Special Conditions Hall. What I have in mind is:

• Remove the reverse variants of each event that has two races
• Set all remaining events to 3 laps - Easy gets longer, Hard gets shorter

This change would free up 30 events if my count is correct, and the lap changes would feel more balanced in my opinion, as Hard events are already "harder" by virtue of having faster opponents, and 5 laps for some of them feels unnecessarily long. At the same time, Easy being slightly longer compensates for the removed events a little.

I think these would be beneficial overall, since looking at the game's events you can see some odd omissions - Ford has no events despite a healthy variety of cars, Lancia has nothing, etc. With these changes I could add two 3-race events for Ford (like a Mustang Cup and a Focus Race), one for Lancia, and one for Fiat, and still have only used 12 races with 18 left over from the trimming of Special Hall.

I might possibly hold a poll for it in this thread but for now feel free to react/respond with your thoughts.

 

[ford capri]

Hello,
For me this idea Is ok, more variety Is better
Some ideas, station wagon Championship, coupé Championship, 4 cylinder engine, 8 cylinder engine

 

[ThePotatoKing]

Groups such as GT300 and low-end touring cars are underrepresented and could use some events of their own as well. I would also suggest a concept car championship since there are plenty of them without any significant use.

 

[TheAdmiester]

Groups such as GT300 and low-end touring cars are underrepresented and could use some events of their own as well. I would also suggest a concept car championship since there are plenty of them without any significant use.

Was already discussed on the modding Discord and I think it’s a good idea.

Playing through yesterday I feel like there are also a lot of 10 race champs that could be 5 (besides significant ones like GTWC), and some 5 event races that could be 3 (like Audi TT) - I’m gonna go through at some point and take stock of everything that I can probably shorten without too many complaints.

 

[Keroyon]

You are making gods' work @TheAdmiester, I don't know much about modding but creating events, changing sounds for cars and so on, basically creating a brand New game from GT4, that is incredible !

 

[GTP_reddevil]

For me the randomizer (random car prizes) is the best thing of this mod - imagine Brinze on National B License rewards you with say 787B or the Midget ‘63 - that creates an interesting challenge.

 

[dylansan]

I've had an idea that I'm considering that I'd like to get peoples' feedback on, mainly because it's effectively removing content from the original game, but for a good cause. As it stands, GT4's save file structure can only hold records for 768 races - individual races, not events, so something like the All Japan GT Championship takes up 10 records. Including a handful of events that are unused, vanilla GT4 is sitting at around 720 or 730 races, meaning we have room for a few more but not an awful lot.

I'm thinking of trimming the fat in some areas where GT4 feels like a bit of a grind, and right now my sights are set on the Special Conditions Hall. What I have in mind is:

• Remove the reverse variants of each event that has two races
• Set all remaining events to 3 laps - Easy gets longer, Hard gets shorter

This change would free up 30 events if my count is correct, and the lap changes would feel more balanced in my opinion, as Hard events are already "harder" by virtue of having faster opponents, and 5 laps for some of them feels unnecessarily long. At the same time, Easy being slightly longer compensates for the removed events a little.

I think these would be beneficial overall, since looking at the game's events you can see some odd omissions - Ford has no events despite a healthy variety of cars, Lancia has nothing, etc. With these changes I could add two 3-race events for Ford (like a Mustang Cup and a Focus Race), one for Lancia, and one for Fiat, and still have only used 12 races with 18 left over from the trimming of Special Hall.

I might possibly hold a poll for it in this thread but for now feel free to react/respond with your thoughts.

I'm okay with this idea, especially making the easy Special Hall races a lap longer. I don't mind keeping the hard ones at 5, since the laptimes will be lower anyway.

My preference would be to not decrease the challenge of existing races. Though to be fair, a lot of the really short races throughout the game would be made more competitive by having more laps, so you don't have to have an overperforming car just to overtake everyone in such a short time.

Edit: how feasible would it be to edit the lineups of some races to have cars of more equal performance? e.g endurance races where everything's in totally different classes and there's always a Gillet or something trailing way behind. I almost wonder if some gearing changesto the AI could even some of that out, but I don't know if that's possible.