Object speed changes mix material value OR material ID

[coilbook]

I know it is a bit off topic but anyway to do a float script or use parameter dialog to control octane's mix material amount with actual car speed. If car stops/slows down mix amount go to 1. Car starts moving mix amount goes to 0. I appreciate any help.


Thank you!!!

P.S



They have this for path constraint with material ID change between 1(go) and 2(stop) but we cannot use it because we yuse city traffic to make cars stop and go
braking = .96

theCar = $MaroonSedan
PositionNext = at time (currentTime + 1) theCar.position.controller.percent
PositionCurrent = at time currentTime ( theCar.position.controller.percent )
PositionPrevious = at time (currentTime - 1) ( theCar.position.controller.percent )

travel = abs (PositionNext - PositionCurrent)
travelPrev = abs (PositionCurrent - PositionPrevious)

--ID = 1

if (travel <= 0.01) then (ID = 2 ) -- standing still
--else (

else if ((travel / travelPrev) < braking) then ( ID = 2 ) -- braking
else( ID = 1 ) -- coasting

--)

Thank you

[coilbook]

it looks like this float script work with changing material ID 1-2 when car stops and goes If anyone know how to change mix material amount instead of ID 1-2 will be great


braking = .96

theCar = $RC3
PositionNext = at time (currentTime + 1) theCar.position
PositionCurrent = at time currentTime ( theCar.position )
PositionPrevious = at time (currentTime - 1) ( theCar.position )

travel = length (PositionNext - PositionCurrent)
travelPrev = length (PositionCurrent - PositionPrevious)

--ID = 1

if (travel <=0.1 ) then (ID = 2 ) -- standing still
--else (

else if ((travel / travelPrev) < braking) then ( ID = 2 ) -- braking
else( ID = 1 ) -- coasting

--)