Slippery/bumpy surfaces

[thelusiv]

The features were added to the listedit tool but you'll have to go through the code now to see how it works...Joe told me a little about it last night, here's the stuff about friction:

(22:56:48) Venzon: i had to change the object list.txt file format
(22:56:54) Venzon: but converting to the new format isn't too hard
(22:57:05) Venzon: you could even write a script to do it pretty easily
(22:57:26) Venzon: here's how:
(22:57:33) Venzon: open up the list.txt file in a text editor
(22:57:39) Venzon: add 10 to the top of the file
(22:57:45) Venzon: like, the number 10... on its own line
(22:57:56) Venzon: then start up listedit and load the list.txt file
(22:58:04) Venzon: do the following commands:
(22:58:10) Venzon: addparam 1.0
(22:58:12) Venzon: addparam 0.9
(22:58:45) Venzon: that adds the new parameters to the track files. the first one is the friction coefficient for non-treaded (road racing) tires
(22:58:59) Venzon: the second one is the friction coefficient for treaded (rally/off-road) tires
(22:59:23) Venzon: by doing addparam you create a 10 and 11 that you can use with set
(22:59:45) Venzon: and addparam also automatically sets the defaults
(22:59:48) Venzon: then you can save that
(22:59:52) Venzon: and exit listedit
(22:59:57) Venzon: and then oooone more thing
(23:01:11) Venzon: add the following to the track.txt file:
(23:01:14) Venzon: non-treaded friction coefficient = 1.0
(23:01:14) Venzon: treaded friction coefficient = 0.9
(23:01:26) Venzon: that's the default friction for the smooth road surfaces
(23:01:29) Venzon: and then you're done
(23:01:35) Venzon: wow, that sounded like a crazy long number of steps
(23:01:43) Venzon: it seemed simpler in my head :-)
(23:03:21) Venzon: also set 7 (used to be reserved) is now bumpiness

car tire tread stuff:

(01:11:43) Venzon: the [tires-front] and [tires-rear] sections in the .car file contain a new "tread" parameter that defines how much tread is on the tire
(01:11:57) Venzon: G4 has 0.0, TC has something higher, like 0.7...
(01:12:16) Venzon: i have the surfaces set up on road atlanta so that a tire with 1.0 tread has a 0.9 friction coefficient
(01:12:25) Venzon: and 0.0 tread has a 1.0 friction coefficient
(01:12:28) Venzon: on asphalt
(01:12:54) Venzon: off-road, it's 0.7 for no tread, 1.0 for full tread
(01:12:59) Venzon: not totally realistic
(01:13:14) Venzon: but should be in the ball park once bump is in there

and the stuff about bumpiness:

(01:28:58) Venzon: the bumps in the off-road parts are set at 2 meter wavelength with 0.03 meter magnitude
(01:29:15) Venzon: all of the bumpiness and friction stuff can be set per object as they are now parameters in the list.txt file
(01:29:23) Venzon: check the updated format.txt in the listedit folder in the track editor
(01:29:32) Venzon: it probably needs some work
(01:29:37) Venzon: the TC is way too grippy off-road
(01:29:41) Venzon: and probably other cars, too
(01:30:05) Venzon: it's fun to drive the TC around the edges of road atlanta in the cockpit view, though
(01:30:08) Venzon: nice and bumpy
(01:42:20) Venzon: wow, the SB comes alive on the bumps... weird