GPL 1967 v3 Dev blog

Discussion and releases for the 1998 racing simulation by Sierra/Papyrus
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PTRACER
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#136

Post by PTRACER »

Bottom post of the previous page:

leon_90 wrote: 6 months ago
PTRACER wrote: 6 months ago there aren't any 3D animation file formats programmed into GPL.
Probably just the driver's arms (and the driver's head thanks to Lee's patch)?
Good point, though it's not a specific file format. Not sure if there is anything special about the head patch, but driver arms are just another example of mathematics. Each 3DO has an X, Y, Z position. Turning the wheel modifies the X,Y,Z position of the 3DO by a calculated amount. A different calculation is used on the wrists so it gives the impression of the wrists bending. Pressing the Raise Hand button moves the glove's XYZ to another specified location. Same with the gear shift. It's kind of funny how Papy were able to do that back in 1998. Even though the driver hands move in AC, it's just a sequential shifting motion. And the gear stick doesn't move.

Anyway back to the point, I wouldn't know where to begin to make a flag marshall take out a flag, wave his hands in a figure of 8 motion, then put the flag back.
Developer of the 1967v3 Historic Mod for Grand Prix Legends: viewtopic.php?t=17429

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#137

Post by leon_90 »

PTRACER wrote: 6 months agoGood point, though it's not a specific file format. Not sure if there is anything special about the head patch, but driver arms are just another example of mathematics. Each 3DO has an X, Y, Z position. Turning the wheel modifies the X,Y,Z position of the 3DO by a calculated amount. A different calculation is used on the wrists so it gives the impression of the wrists bending. Pressing the Raise Hand button moves the glove's XYZ to another specified location. Same with the gear shift. It's kind of funny how Papy were able to do that back in 1998.
That is honestly amazing! Such ingenuity always has my respect, really interesting.
PTRACER wrote: 6 months agoEven though the driver hands move in AC, it's just a sequential shifting motion. And the gear stick doesn't move.
Not exactly. You can make your hands move with specific movements and you can make the gear lever engage in specific positions. There aren't many cars in vanilla content that they bothered to do this for. The Lotus 49 is the only one that comes to my mind. However, content creators these days do it all the time for their cars.

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#138

Post by PTRACER »

That looks much better than vanilla!
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#139

Post by PTRACER »

On Sunday night and briefly on Monday, I tentatively started to add code for dirty tyres as seen in dirtgearpatch. It's not 100% implemented yet, but my testing was successful.

In case you don't know what I'm talking about - if you go off track, the tyres will take several corners before they regain their full level of grip (simulating dirt on the tyres).
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#140

Post by Michkov »

I've always wondered how much an effect dirt on the 1967 spec would have. I'm going of hearsay here and what little I ran with the dirtgear patch. Modern tyres are said to be quite susceptible to getting dirt on them and the tyres being soft, sticky slicks I can see that. Because the dirt should embed itself in the rubber and needs to be scrubbed off by the road surface across the whole width of the tyre. The 67 spec being harder and profiled should have less ability to hold onto dirt and should clean faster since the dirt has only to travel to the next groove in the profile before it doesn't affect the rubber/road interface anymore. I'd love to hear if there is a difference between profiled and slick tyres in the time they need clean themselves, also if there is a difference in compounds. I'm not saying one doesn't and the other does, but when using the dirtgear patch the effect felt overstrength when I encountered it. It could also be that I didn't separate the effects of wear and dirt at the time. It's hard to tell with the dirtgear patch at times.

All in all I'm looking forward to your interpretation of the effect Paul.
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#141

Post by Manfred Cubenoggin »

Running my Crossle 30F at Shannonville Motorsport Park...then, Nelson International...back in the 70's, there was a period there where the paddock area was covered with gabian which is much like railroad ballast. Large rocks half the size of your fist. Coming off the track after a session with the tyres hot and gummy and going directly to your paddock stall, it was unavoidable. I recall having to spend some considerable amount of time, after the tyres had cooled off, picking the rocks from the tyres which were coated a full 360° of the circumference. Probably added about 40 pounds to the car's weight. :haha:
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