BTB

track.ini

[INFO]
name = Mexico Shakedown 2011    // name of track
physics = gravel    // type of surface
author = Emmanuel MARCEROU    // author
version = 1.2    // version
date = 22/06/2020    // date of release
comment = Offical WRC shakedown San Juan de Otates in Mexico at 2011    //
splashscreen = mexico_sd.jpg    //splashscreen track downloading
length = 4.8    // lenght of track in kilometers

settings.ini

[SETTINGS]
sunDirection = -0.843359,-0.503774,0.186968    // sundirection x,y,z

You can calculate real sun position with this web site:
https://www.suncalc.org

mat.ini

[MAPS]
count=103    // number of material

[MAP0]    // first material
texture=C:\RBR\RX_CONTENT\Tracks\2011MS\Textures\nuevo_8.jpg    // texture
data0=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data1=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data2=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data3=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data4=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data5=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data6=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data7=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data8=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data9=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data10=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data11=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data12=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data13=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data14=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material
data15=53 53 53 53 53 53 53 53 53 53 53 53 53 53 53 53    // type of material

See sheet in https://rbr-wrc.blogspot.com/p/informations.html

materials.ini

[MATERIALS]
count=1        // number of materials
MAT_0=Materiales\Materials\GravaAustralia\road // material

[Materiales\Materials\GravaAustralia\road]
effectName=BTB_Diffuse    // type of material (see below)
techniqueName=Default    // technique to display material (see below)
ambient=0.4,0.4,0.4,1.0    // color of light
SpecularPower=4    // power of specular sun light
SpecularColor=0,8627451,0,8627451,0,8627451    // color of specular sun light
diffuseTexture=C:\RBR\RX_CONTENT\Tracks\2011MS\Textures\road.dds
secondDiffuseTexture=C:\RBR\RX_CONTENT\Tracks\2011MS\Textures\SAT.dds
normalTexture=C:\RBR\RX_CONTENT\Tracks\2011MS\Textures\road_bump01.dds
specularTexture=C:\RBR\RX_CONTENT\Tracks\2011MS\Textures\road_spec01.dds

Explain:

effectName: BTB_Diffuse, BTB_DiffuseBump, BTB_DiffuseBumpSpecular, BTB_DiffuseBumpSpecularVertLerp, BTB_DiffuseBumpVertLerp, BTB_DiffuseMultiplyAdd, BTB_DiffuseMultiplyAddVertLerp, BTB_DiffuseSpecular, BTB_DiffuseSpecularVertLerp, BTB_DiffuseVertLerp

techniqueName: Default, Transparent

diffuseTexture: normal texture

secondDiffuseTexture: additionnal texture  (merge with background texture)

normalTexture: bump texture (add volume on texture)

specularTexture: specular texture (add sun reflection)

pacenotes.ini

[PACENOTES]
count=5    // number of pacenotes (default = 5)

[P0]
type=21    // start
distance=10
flag=0

[P1]
type=23    // split gate time n°1
distance=150.7871
flag=0

[P2]
type=23    // split gate time n°2
distance=301.5742
flag=0

[P3]
type=22    // finish
distance=422.4065
flag=0

[P4]
type=24    // end of track
distance=447.4065
flag=0

objectlist.ini

[OBJECTS]
count=1    // number of object on track

[Object_0]
file=t_0_s0_sm0    // name of object
xform=t_0_s0_sm0_o0r0    // name of xform object
cloneCount=1
LODIn=0    // distance min to draw object in meter
LODOut=1410,944    // distance max to draw object in meter
Visible=1    // set if object is visible
DrawInstanced=0
Moveable=0    // set if objet is movable (0, 1, or 2)
ShadowCaster=1    // set if object cast shadow on track / car
CollisionModel=1    // set if object have collision, work with Moveable (0n 1 or 2)

Explain:

Moveable: coming soon

CollisionModel: coming soon

driveline.ini

Points for driveline in X, Y, Z

spawn.ini

Set position of car at start in X, Y, Z

FX Directory

All FX (BTB_Diffuse, BTB_DiffuseBump, BTB_DiffuseBumpSpecular, BTB_DiffuseBumpSpecularVertLerp, BTB_DiffuseBumpVertLerp, BTB_DiffuseMultiplyAdd, BTB_DiffuseMultiplyAddVertLerp, BTB_DiffuseSpecular, BTB_DiffuseSpecularVertLerp, BTB_DiffuseVertLerp), clouds.fx, fx.ini, sky.fx and scattering.h (you can change settings in this file to make Fog and Night)

Textures Directory

All textures are in this directory. 
Default type is .DDS (transparency) but may be .JPG (no transparency)

Objects Directory

All objects are in this directory.
You can change many propertie of object (position, texture, etc)

Tutorials

https://www.youtube.com/@Parlesportes
https://www.youtube.com/@Piddy555
https://www.youtube.com/@user-yx5wd5yy6h
https://www.youtube.com/@jackhorror1
https://www.youtube.com/@lakimakromedia
https://www.youtube.com/@giospeeddesigns1444
https://www.youtube.com/@RodrigoRodriguezowl
https://www.youtube.com/@rsoulinternet
https://www.youtube.com/@7pubbli727

Xpacks

https://simracexperience.es.tl/BTB-Xpacks%2Ctutoriales.htm
https://rfactorplaza.activo.mx/t7-xpacks-recopilacion-bobs-track-builder
https://www.racedepartment.com/downloads/categories/xpacks.61/

Weathers

BTB use Tracks.ini, TrackSettings.ini, Clouds_textures.rbz and PS_MontBlanc.ini (or PS_MontBlanc_LOW.ini).

- Tracks.ini

[Map41]
TrackName = "Maps\track-41"
Particles = "Maps\ps_montblanc"

Tracks.ini section Map41 define weather condition and particules (wate, grass, road, gravel, etc.)

You can change ps_montblanc to PS_Arctic, PS_Australia, PS_British, PS_Japan, PS_USA or make your wone.

- TrackSettings.ini

[41M_crisp_clear]
xxxxxxxxxxxxxxxxxxxxxxxxxxxx

TrackSettings.ini section 41M_crisp_clear definie weather (ambiance, light, etc.)

You can change content of section 41M_crisp_clear by another section.

- Clouds_textures.rbz 

Dry\US_CLEAR.tga_0.dds

Clouds_textures.rbz contain texture for clouds.

You can extract with 7zip software and use an other texture like US_PRECIPITATION.tga_0.dds to rename it.

- PS_MontBlanc.ini and PS_MontBlanc_LOW.ini

Contain weather condition and particules (wate, grass, road, gravel, etc.)

You can change somes value to adapt your weather on your track.