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GPL Force Feedback Settings

3 posts by 3 people · 03 Apr 2001 16:15 UTC - 05 Apr 2001 13:24 UTC

Richard 03 Apr 2001 16:15 UTC#192575
Hi, I`m looking for good force feedback settings for GPL and a Microsoft USB Sidewinder force feedback wheel. Also, if anyone knows how to stop the FF with the Microsoft draining so much CPU time whilst runing GPL =) Regards, Richard
The built in "recommended" settings are for the MS wheel. You shouldn't have to change anything. CPU time...you'd have to talk to MS about that one. Marc. "Richard" <[email hidden]> wrote in message news:[email hidden]...
Quoted text (7 lines)> Hi, > > > I`m looking for good force feedback settings for GPL and a Microsoft USB > Sidewinder force feedback wheel. > > Also, if anyone knows how to stop the FF with the Microsoft draining so
much
Quoted text (9 lines)> CPU time whilst runing GPL =) > > > Regards, > > Richard > > >
Here are some thought on MSFF wheel I gathered from past posts. Mike ---------------------------------------------------------------------------- ------- I think you mistook what I was trying to say. Actually, I may not have typed it out as I intended. I'll try to summarize below: - The 4.0 software is NOT needed to use this wheel in Win98 or Win2000 with FF and split axis. - If you plug in the USB wheel without the 4.0 software installed, the OS will automatically set it up as: Steering X1, Throttle Y1, and Brake Y2. The downside to this is you can't adjust the FF strength, the centering strength, and a few other options. - FF will be enabled by default without 4.0 software! Now you have to enable it in the games. For games that don't support FF, I just hit the "Force" button on the wheel to make it easier to handle. - In most games, the 4.0 software appears to cause an additional performance hit ON TOP of the normal FF hit. e.g. in Nascar Heat, I lose 4-5 FPS with FF enabled and NO 4.0 software. With the 4.0 software, I lose 12-15 FPS and FF enabled. -Disabling the software does not appear to help. Only by removing it (it can be removed in Win98, it CANNOT be removed in Win2000) will you see the benefits. Like I said, these were the observations I made on two BX based systems. BX systems have USB 1.0 support. Some newer systems have USB 1.1; I'm not sure if that helps or not. In both of my systems, removing the 4.0 software made quite a difference. FF enabled in a game still cause a slight hit but not a huge hit like with the 4.0 software. This problem seems to be consistent with the fact that only MSFF USB wheel users are having problems with CPU utilization. The gameport users use 3.02; they can't use 4.0. Good luck to everyone and hopefully some other people can post their test results for us to compare. Michael M ---------------------------------------------------------------------------- ----- From: "Ambulater" <[email hidden]> Subject: Re: gpl force feedback Date: 31 January 2001 15:05 GRAND PRIX LEGENDS AND FORCE FEEDBACK: A PRIMER IN CORE.INI SETTINGS I believe GPL core.ini FF settings are extremely specific to your wheel, your machine, and even your car setups and driving style. However, I also believe that there is a logical approach you can to take to individualizing your settings. With a proper understanding of what these settings do you can produce realistically subtle tactile feedback that will enhance your driving ability. To that end, let's take a look at each of the FF core.ini settings, shed some light on what they do, and discuss some practical approaches to setting them in a way that works for you and your setup. LATENCY: This is essentially how far into the future (in seconds) the GPL software predicts what forces will be needed and sends them to your wheel, thereby overcoming latency. I determined the latency setting by driving over curbs repeatedly and adjusting the value until all four wheels produced individual FF effects in sync with what I was seeing from an outside view of the car. MAX STEERING TORQUE: This is an interesting one. This is not actually the maximum torque your wheel will produce, but is instead the *THRESHOLD* at which your wheel produces it's maximum force. Let's just pick some numbers out of the air to illustrate the point. Let's say the GPL software models the torque of shifting at high revs at 50N, fish-tailing through a corner at 200N, and a complete wipe out at 300N. If you were to set your max steering torque threshold at "50" all of these effects would be equally powerful as all would produce the maximum amount of torque possible. So if you set this threshold value too low the car is virtually undrivable and there is little distinction between the various forces. If you set this threshold value too high (say 2000), you'll lose all steering torque altogether as no steering torque force will ever reach the threshold necessary to trigger maximum effect. In this example, setting the value to 300 would allow you to feel a marked gradation between these 3 very different effects. So how do you set this for your system? First set damping in both the windows controller panel and the GPL core.ini to 0. We don't want to mess with damping right now. From a dead stop turn your wheel to full left or right lock, take your hands off the wheel, and then gradually accelerate. If the front wheels (and steering wheel) do not center under forward momentum and your car continues in a perpetual circle, then the threshold value is too high. If instead, the wheel suddenly snaps to center and or see-saws violently, then you have the threshold set too low. If the forward momentum of the car very gradually brings the front wheels (and the steering wheel) into forward alignment, as you would expect in a real world car with manual steering, then you've got the threshold value just about right. Adjusting the threshold to a level that just barely produces a centering effect at low speeds will result in a very drivable car and nice subtle tactile inputs that will cue you as to the status of your vehicle. Now here is the part that really throws people: the Max Steering Torque threshold *ONLY* affects *STEERING TORQUE FORCE* or the forces related to engine torque, torque caused by maneuvering through corners, wheel centering torque, etc. It does *NOT* affect any of the forces related to crashing into guardrails or driving on grass. For some odd reason, known only to Papyrus, these latter type of effects are only affected by the damping setting. DAMPING: This, contrary to some reports, does in fact do what it says. It causes increased "friction" or "viscosity" in the movement of the wheel and therefore also tends to lessen some FF spikes. But here's where it gets a bit strange. You'll find that as you increase the damping value, and the friction on the wheel, you also increase the forces felt when driving on grass or slamming into rails. I recommend adjusting this value just high enough to barely feel a subtle difference between pavement and grass when one single wheel drops off the road. Using this as a guide, you'll be able to tell with your eyes closed if all four wheels are on the road. Hitting curbs will feel realistic, guard rails will give you a jolt (but usually allow you to correct), and the wheel will not be so tight that you begin to lose torque effects. The key to good driving and useful tactile information is subtlety in each of these FF settings. Remember, GPL is not an arcade game! Finally, in the Windows controller panel, I personally have Force Effects set at 100% and dampening effects to 0% (you've already adjusted dampening in the GPL core.ini so adding more damping in the controller panel will just result in reduced less subtle effects). I like to use full linear steering in GPL with a steering ratio of 15:1. These latter two settings are purely a matter of taste, but you should keep in mind that they may effect the way you feel the forces at work in your wheel or at least the way your car responds as torque is placed on the wheel. Once you find a car setup that suits your driving style you may want to tweak the core.ini FF settings to match your setup. Hope this helps. -- Chris "Ambulater" Lee "Don't Bother Running.........You'll Just Die Tired." Reviews at www.sim-arena.com "Marc Collins" <[email hidden]> wrote in message news:adFy6.518853$[email hidden]... > The built in "recommended" settings are for the MS wheel. You shouldn't > have to change anything. > > CPU time...you'd have to talk to MS about that one. > > Marc. > > "Richard" <[email hidden]> wrote in message > news:[email hidden]... > > Hi, > > > > > > I`m looking for good force feedback settings for GPL and a Microsoft USB > > Sidewinder force feedback wheel. > > > > Also, if anyone knows how to stop the FF with the Microsoft draining so > much > > CPU time whilst runing GPL =) > > > > > > Regards, > > > > Richard > > > > > > > >

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