Gran Turismo 4 Modding Discussion

[Krakenous]

Last part should definitely be possible, although if anyone's wanting to make mods for Spec II itself I'd probably recommend waiting until it's more finished and settled in terms of updates, otherwise you'll just be chasing after it with new patches each time I release one.

Awesome. Oh yeah of course it's more for me to practice and get comfortable and hopefully see if I enjoy doing it and people like or respond to my results so, I'll dip my feet into it and probably slip off head first into the pond probably ha👌.

Shame we can't run the game loose for anything "carsound" related but, no bother. The world of NVMEs saves my graces these days with unpacking and repacking haha.

 

[Suzumiya]

I was about to try out the Clubman League but I then noticed that the IS200 GT-1 putts around like it's stuck in first gear right from the start. Sucks because it seems like it could give a good challenge. Any chance of a fix?

 

[Dave A]

I was about to try out the Clubman League but I then noticed that the IS200 GT-1 putts around like it's stuck in first gear right from the start. Sucks because it seems like it could give a good challenge. Any chance of a fix?

Are you on version 1.05 of the mod? That may be an issue recently fixed, but I've not tried that event in 1.05 myself yet.

 

[TheAdmiester]

I was about to try out the Clubman League but I then noticed that the IS200 GT-1 putts around like it's stuck in first gear right from the start. Sucks because it seems like it could give a good challenge. Any chance of a fix?

It's already fixed locally, will be in the next version.

 

[Krakenous]

One down side I've noticed with the audio engine is that there is no room for "off-load" engine sound samples, instead, when you're "off" the throttle, it just lowers the volume of the original sound sample but not always by enough at times, can this be influenced at all or adjusted? By which I mean, the volume of the sounds when you are OFF the throttle?

I'm guessing it might be hard coded as I was thinking of adding a bassy-er extra sample in the background that runs across the entire range and fade of the RPM range that is always present but has HIGHER volume when you are "off" the throttle, to give the illusion there is an offload sound sample.

However, if you are not able to tell it to adjust the volume of the audio samples directly or tell it to adjust the sample volume when off throttle then, I'll just have to revert to my original method. If I can however...I might be able to make my test example audio, sound even more convincing despite the limitations on the archive sizes by essentially using tricks.

 

[TheAdmiester]

One down side I've noticed with the audio engine is that there is no room for "off-load" engine sound samples, instead, when you're "off" the throttle, it just lowers the volume of the original sound sample but not always by enough at times, can this be influenced at all or adjusted? By which I mean, the volume of the sounds when you are OFF the throttle?

I'm guessing it might be hard coded as I was thinking of adding a bassy-er extra sample in the background that runs across the entire range and fade of the RPM range that is always present but has HIGHER volume when you are "off" the throttle, to give the illusion there is an offload sound sample.

However, if you are not able to tell it to adjust the volume of the audio samples directly or tell it to adjust the sample volume when off throttle then, I'll just have to revert to my original method. If I can however...I might be able to make my test example audio, sound even more convincing despite the limitations on the archive sizes by essentially using tricks.

Not possible and wouldn't be enough space anyway, it's just controlled by the engine itself with no real control.

May as well post a teaser for 1.06 while I'm here:

 

[tomo 427 S/C]

Not possible and wouldn't be enough space anyway, it's just controlled by the engine itself with no real control.

May as well post a teaser for 1.06 while I'm here:

Amazing!

Did you give any thought to the car descriptions in the garage?

 

[TheAdmiester]

Amazing!

Did you give any thought to the car descriptions in the garage?

Finally got around to it for 1.06. It'll be an unlabelled button with a smaller icon to avoid taking up too much real estate, especially for 4:3 users:

 

[Krakenous]

Not possible and wouldn't be enough space anyway, it's just controlled by the engine itself with no real control.

May as well post a teaser for 1.06 while I'm here:

Ah ok, so do you mean the game engine directly is controlling the volume of the sound samples ON and OFF throttle and there is no way to influence that? Fair enough, no bother, I do actually have an idea though that I'm testing.

Anyway! Drivetrain swaps and the little description button in garage... absolutely wonderful work, how exciting!

 

[Labonski]

Oh wow, you're actually doing VCD conversions, that's great to hear, this mod just gets better and better. Could I request that at least one LMP1 gets the upgrade? I know it's a bit unrealistic, but it would be a blast to play about with

 

[60fpshacks]

4WD conversions? YES!

 

[TheAdmiester]

Sometimes research leads into plain screwing around:

 

[Johnny Caisse]

Just wanted to say, this mod is a late-teenagehood dream come true and I wanted to thank you enormously.

I hope you get the opportunity to rest soon!

 

[60fpshacks]

@TheAdmiester

In real life does not the FTO have a dark green color? Is it possible to add this color to the stock version since the AWD version has it? Speaking of the FTO, could this car get an AWD conversion option?

And, could GT Auto be added to the shortcut menu?

 

[TheAdmiester]

@TheAdmiester

In real life does not the FTO have a dark green color? Is it possible to add this color to the stock version since the AWD version has it? Speaking of the FTO, could this car get an AWD conversion option?

And, could GT Auto be added to the shortcut menu?

I’ve never heard of an AWD FTO and I’m not familiar with their colours, but paints are something I’ll be looking at again eventually.

GT Auto shortcut maybe in the future.

 

[dylansan]

@TheAdmiester

In real life does not the FTO have a dark green color? Is it possible to add this color to the stock version since the AWD version has it? Speaking of the FTO, could this car get an AWD conversion option?

And, could GT Auto be added to the shortcut menu?

Don't think the FTO was ever offered from factory as AWD, and it doesn't sound like conversions are really done in real life. Only one I could find reference to stuck an FTO body on an Evo chassis. Not really the same.

According to these numbers, 14 each of Timber Green and Kielder Green FTOs were produced, making them pretty rare.

Production Figures - FTO AUSTRALIA

Personally, I would like Dandelion Yellow, perhaps as a special color. That was the color used for the GPX Limited Edition (207 produced) and I remember applying it in GT5 or GT6. The GPX LE in real life does have badge differences and an LSD as stock, so it would probably count as a separate car if it were PD adding it.

 

[60fpshacks]

I’ve never heard of an AWD FTO and I’m not familiar with their colours, but paints are something I’ll be looking at again eventually.

GT Auto shortcut maybe in the future.

I am not sure if one exists in real life, but the racing version in GT4 is AWD which is why I asked.

@dylansan

 

[Axel42]

I can't seem to find an answer to this, but can the Spec II Mod be played on a vanilla PS2 console?

 

[dylansan]

I can't seem to find an answer to this, but can the Spec II Mod be played on a vanilla PS2 console?

Yes, it can.

 

[Axel42]

Yes, it can.

Doesn't work on my Slim PS2. It doesn't accept the disc. I can play the online public beta just fine but Spec II won't work. Any suggestions where I maybe could have gone wrong?

 

[60fpshacks]

Doesn't work on my Slim PS2. It doesn't accept the disc. I can play the online public beta just fine but Spec II won't work. Any suggestions where I maybe could have gone wrong?

Disc? Have you tried running it on OPL?

It works just fine on hardware. If it didn't, I would not have much interest in it as my PC is too old to run PS2 games at full speed with pcsx2. It is great when people care more to make it work on hardware over emulators which are basically just counterfeits/imitations.

I am not attacking emulators as I use them quite often, but I am of the mind that hardware, in other words programming accuracy, should be of more importance. I do agree though we need emulators for playing old games on newer hardware and so old games won't disappear.

(My main use for pcsx2 is for code hacking)

 

[EekTheCat]

TheAdmiester:
Loving the work.
I noticed that sales at manufacturer dealerships pop up from time to time. Are they random? If not, then could you post the timings?
This may just be a minor bug but under Options, Photo Mode, Photo Lab, Slide Display Time would keep resetting to 3 if it were lowered from the default 8. Not a big deal for me, just something to note if this bothers anyone.

Axel42:
If you burned both GT4OPB and Spec II discs on the same DVD type (DVD5+/DVD5-/DVD9), then it could be due to Spec II not passing some integrity check. Some patchers like Delta verify and complain about invalid base image checksum whenever updating a Spec II ISO but never when patching the original OPB.
My optical drive died ages ago so like most, I use OPL off USB/SMB.

 

[Onbail]

Damn it's been 10yrs since I have been on here and just restarted playing GT4 Spec II mod and having a blast brings back memories.

 

[60fpshacks]

Axel42:
If you burned both GT4OPB and Spec II discs on the same DVD type (DVD5+/DVD5-/DVD9), then it could be due to Spec II not passing some integrity check. Some patchers like Delta verify and complain about invalid base image checksum whenever updating a Spec II ISO but never when patching the original OPB.
My optical drive died ages ago so like most, I use OPL off USB/SMB.

@Axel42
Now that I think about it, the issue is probably the PS2 logo. If the disc image is being rebuilt without Sony's CDVDGEN, then the proper logo that appears on game boot could be the issue as it is not there. There is also a tool that can fix this called PSX/PS2 Disc Patcher. The logo takes up the first 24KB of the disc image.

When looking at the the information on the disc image such as the implementation identifier it appears to be built using CDVDGEN, but it is missing the logo for some reason.

 

[StealthVel]

Is there a mod that adds H-shifting to GT4? Doesn't even have to adapt to each car, just something that implements the clutch and H-pattern recognition.

 

[EekTheCat]

TheAdmiester:
Does "Minor tweaks to used car dealership selections" that you've been doing mean rearranging the lineup or adding/removing cars from it?

 

[SuperSportX]

I am not sure if one exists in real life, but the racing version in GT4 is AWD which is why I asked.

@dylansan
View attachment 1394385

I think that was done just to give the car a performance/acceleration boost, like a 'what-if' as the only real racing one AFAIK was the GT300 one.

 

[TheAdmiester]

Is there a mod that adds H-shifting to GT4? Doesn't even have to adapt to each car, just something that implements the clutch and H-pattern recognition.

Not that I know of, not sure if it's even possible

TheAdmiester:
Does "Minor tweaks to used car dealership selections" that you've been doing mean rearranging the lineup or adding/removing cars from it?

New days that replace existing ones with more variety

 

[Slavko]

Thanks for answering my questions last time. I'm enjoying your mod very much so far.

Not sure if this has been asked, but is selling car parts even possible to implement? In a realistic time frame that is, as I guess anything is possible if we could reverse engineer the whole game.

Thank you once again.

 

[Fuzzi0n]

Is there a mod that adds H-shifting to GT4? Doesn't even have to adapt to each car, just something that implements the clutch and H-pattern recognition.

There's a script that can sort of emulate it but it still has to go through each gear from what I can tell.