MadCar Manual

MadCar 3 is plug-in for 3ds Max for quick rigging of wheeled vehicles and their animations by simulating the control. This new version allows rigging vehicles with any number of wheels and with any of their mutual arrangements. Any number of trailers is also supported.

There are simplified behavioural settings for each of the wheels and related components, which can be fine tuned if required. This allows to simulate motion of any type of vehicle - from a race car to a heavy truck. Animation is created during simulation in real time. Simulation can be controlled by keyboard, joystick, game controller or steering wheel. It is also possible to set up ‘Follow path’ and ‘Follow the Object’ mode.

The package also includes a procedural map that generates tire marks on the surface over which vehicle is moving (V-Ray only).

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System requirements:

3ds Max versions: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 - all 32 or 64 bit

3ds Max Design : all

Tire marks require V-Ray

OS: Windows XP, Windows Vista, Windows 7, 8 all 32 and 64 bit

Microsoft Visual C++ 2010 Redistributable Package (probably already installed on your PC)

User must have local administrator rights with Windows XP to use MadCar. on Windows 7 administrator right needed only during installation

Installation

Users are provided with the same installation file for both Workstation and Render node

MadCar.exe

Workstation can be used only when license is properly installed, and provides access to all MadCar options.

If MadCar does not find license file it switches itself to Rendernode mode and only can open and render files created with MadCar Workstation

Rendering is available both locally and over network.

To install the program you need to run the MadCar.exe with the administrator rights. (In windows 7 right click “run as administrator”) even if you are logged in as admin.

Registration

for versions 3.026 and higher please see http://docs.rendering.ru/en:cerber-protection

Start the MadCarRegistration32x.exe or MadCarRegistration64x.exe utility (for 32-bit or 64-bit systems accordingly)

Please make sure you always use the registration utility which is supplied with the particular version of MadCar

 MadCar registration utility

Choose the hard disk to be linked with the MadCar license (linking with external USB storage, Flash drives and network drives is not supported).

Press the «Get Your ID File» button and save *.id file on your hard disk under any name you like.

 MadCar registration utility

Send this file to mail@rendering.ru (or your reseller). Please attach copy of you receipt or order number to avoid any delays in communication.

In the nearest time (usually within 24 hours) you will get an email from us (or your reseller) with *.key license file attached. Save this file on your hard disk. Start again MadCarRegistrationXX.exe utility and press the «Apply Key File» button.

In the dialogue box select the *.key file you received from us. With this registration procedure is over.

In case of license malfunction and errors (which can be caused by disk formatting, reinstallation of the operating system or components replacement) you are free to address the developer at any time. Please make sure you download latest version from our forum and generate new *.ID file. Send it to mail@rendering.ru to get your updated *.Key file

However, we reserve the right not to issue a new license in case of total replacement of a PC if the registration request is submitted more often than once in half a year.

ATTENTION! Please always try to email from the same email address you used when you purchased the plug-in. If we can’t find your e-mail address from which you sent the ID file in our database and there is no explanation and receipt or order number in you email, your request may not be processed!

Please always attach you receipt or order number to avoid any delays in communication.

Installing for network or distributed rendering

For network rendering just install the same file MadCar.exe. Installation procedure is the same as for the Workstation, but skipping Registration process. Rendernodes do not require registration.

Submission for network or distributed rendering should be done from the PC with the registered version of MadCar. The rest of render nodes involved in the network or distributed rendering do not need to be registered.

Each MadCar license comes with unlimited render nodes.

manual installation on render nodes:

install 1 machine with the *.exe file then copy \plugins\MadCar.dlo to other rendernodes

MadCar creation

Once installed MadCar can be created from command panel:

Create > Helpers > MadCar

Plug-in includes the following object types:

 MadCar object types

  • Chassis is for car frame.
  • Suspension is for damper.
  • Wheel is for car wheel.
  • MadCar is managing skin.
  • Start Position sets the initial position of the car.
  • Trailer Hitch and Trailer Tongue object for connecting vehicles.

Do not scale and mirror these objects. Only rotation and movement is acceptable.

All objects are linkable with geometry

Chassis can be linked with geometry of a car frame.

Suspension can be linked with geometry of brake blocks and suspension mount parts.

Wheel can be linked with wheel geometry.

Chassis

 Parameters  Parameters

Chassis sets the overall dimensions of the car, its mass and solidity at sudden wheels collision with surface.

  • Width equals to half width of a car.
  • Length equals to half length of a car.
  • Height equals to half height of a car.
  • Mass is the car mass in kilograms. Solidity is the car’s structural stiffness.
  • Solidity is the car’s structural stiffness

Mass value determines car’s reactivity/inertness. The heavier it is, the stronger the suspension sags, and slower the car accelerates and stops.

Solidity sets deformation resistance. At sudden collision of wheels with surface wheel axes can bend and diverge from the initial position. Divergence is less at high solidity.

 Solidity parameters

Position of the rotation axis affects the behaviour of steering wheels. Below are examples for the values of -75%, 0%, 75%.

 Steering wheels rotation parameters

Suspension

 Suspension parameters  Suspension parameters

Suspension section controls car suspension settings such as length of crossover suspension links, spring rigidity, oil damping, buffer gas tension, suspension block limits, Engine drive, steering and other settings.

Length is the length of crossover suspension link.

 Suspension length

Top Stop and Bottom Stop are the top and bottom suspension block stops

 Suspension blocks

Wheel Drive is engine drive.

Steering Gear is steering linkage. Wheels will turn when the steering wheel turn.

Handbrake sets the wheel locking with the handbrake.

Damper settings

Plug-in presents a model of gas-oil damper.

Damper shift is the shift of the damper’s top holder

 Damper settings

Presets help making quick setup without deep knowledge on damper functioning – you have an opportunity of selecting the preset of damper parameters.

Rigidity Factor lets you correct the resulting damper resistance value without fixing multiple parameters one by one. In most cases using these settings is enough for regulation.

Additional Damper Settings are for detailed setup of damper parameters. These settings are intended for advanced users with ability of fine-tuning of damper parameters.

 Damper settings

Running-in test mode the system generates road irregularities in real-time mode and displays damper response to them.

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  • Damper Settings are damper parameters.
  • Spring Rigidity is spring stiffness.
  • Oil Damping is oil resistance.
  • Buffer Rigidity is buffer stiffness.
  • Running-in Stand Setting are the parameters of test stand.
  • Mass per Damper: it is the mass which falls on the damper. For example, if the car with 4 wheels has the mass of 1000kgs, then 250kgs will fall on each damper.
  • Gravity: it is the acceleration of free fall/ gravity factor. It is presented in centimetres – 980cm/s2, meters - 9.8m/s2 or inches - 386“/s2.
  • Road Knoll Rate is the frequency of knolls spread upon the road.
  • Road Hole Rate is the frequency of holes spread upon the road.

Wheel

 Wheel parameters  Wheel parameters

Wheel section sets the dimensions and properties of wheels.

  • Radius is the wheel’s radius.
  • Width is the wheel’s width.
  • Mass is the wheel’s mass set in kilograms.
  • Ruggedness is the wheel’s stiffness. The less the ruggedness, the deeper the wheel’s elastic deformation upon surface.
  • Grip is the constant of surface friction. The greater the constant of friction, the less the car skidding, but with that the chances of roll-over at tight turns are higher. At the installation of wheel make sure the arrow of wheel points to outside direction, not inside the car.

Tread Pattern – tire mark. Used to generate textures of tire marks. An example of the orientation of the tread.

 Tread pattern

When setting a wheel the wheel arrow must point outside and not inside the car.

MadCar

This object represents the skin combining all car components into one integral unit.

 MadCar object parameters  MadCar object

Car Setup is the car’s assembly into one unit.

Dummy Size sets the skin’s size.

All components occurred inside the skin will be automatically applied.

For the assembly of the car there should be one chassis object inside the skin together with the equal number of wheel and suspension objects.

Each pair of suspension and wheel should have equal position as it shown below:

 Object position

Position all the car components according to the needed configuration. As below, for instance:

 Object position

Then press Update (Lock Component)

In case of successful assembly the components should be locked (it will be impossible to move them) and blue coloured as shown below. After that any changes to the components will not affect the whole unit. To update the parameters you need to press Update (Lock Component) once again.

 MadCar object setup

If you want to unlock the components and change their location press Reset (Unlock Component).

Parameters

Parameters are general parameters.

Gravity is the acceleration of free fall/ gravity factor. It is presented in centimetres – 980cm/s2, meters - 9.8m/s2 or inches - 386”/s2.

Surface is the object of surface upon which the car will be moved. After the selection and changing of object and loading of the scene it is necessary to press Update Surface. It is connected with the algorithm of wheel interaction with the ground, this algorithm uses ray-trace accelerator which reasonably speeds up the counting process and makes counting time almost independent on the number of polygons within the surface.

Start Position defines the object location of which will be the starting position of the car. If the object is selected, then after pressing Update (Lock Component) the car will be replaced automatically to the starting position.

Animation

Animation includes counting and animation settings:

Step/Frame fixes the number of keys for the frame. High value of this setting improves accuracy of counting, but reduces the speed of counting; it also leads to the increase of the scene’s size on HDD. Low value of this setting may lead to uneven running of wheels at high driving speed.

Samples fix the number of counted/imputed samples per step. High value of this setting improves accuracy of counting, but reduces the speed of counting.

Low values of the above settings may lead to wheels vibration and car sliding down the sloping surface being at rest with brakes on.

Driving Parameters

Driving Parameters are car driving settings.

Rudder Sensitivity is the response of steering wheel. Lower value makes the rudder less reactive. Fix this setting at low values to get smooth/slow turning of wheels, high values will lead to fast wheels turn.

Rudder Angle is the ultimate steering lock.

Bike Driving turns on motorbike control system

AutoBalance helps motorbikes to keep balance and prevents from falling

Motorbike rigging video tutorial:

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Differential Drive Sensitivity - multi directional movement of the wheels when turning. E.g. when turning right, the right wheel will be spinning backward, left - forward.

Throttle Sensitivity is the response of accelerator pedal. The higher the value, the higher the impulse given to the driving-wheels.

Brake Sensitivity is the response of brake pedal. High value makes the braking more active/intense.

Max Drift Speed - Максимальная скорость проскальзывания колес выше которой автоматически отпускается газ и тормоз. Чем меньше этот параметр тем более предсказуемо ведет себя машина но меньше возможностей экстремального вождения. Малые значения (1-3 км/ч) рекомендуются для начинающих водителей.

Time Delay is the time delay between frames, it is set in milliseconds. Time delay is necessary for the distinguishing of CPU time needed for the mouse and keyboard reaction. If the value is too small driving control may have late response or even be blocked. In this case time delay should be extended.

Driving Type is the type of driving control. The following variants are possible:

Mouse is driving control with the mouse. Mouse movements to the left or right direction make the wheels turn respectively. Mouse movements up and down correspond to acceleration and deceleration. Wheel’s running forward throws into forward gear. Wheel’s running backward throws into reverse gear. The mouse right button is responsible for handbrake.

Keyboard is driving control by means of keyboard. “A” key is for turn to the left. “D” key is for turn to the right. “W” key is for accelerator. “S” key is for brake. SPACEBAR is for handbrake. PAGE UP throws into forward gear. PAGE DOWN throws into reverse gear.

Joystick driving controls are: 4 is forward gear. 2 is reverse gear. 3 is handbrake.

 MadCar joystick setup

Steering Wheel driving controls: Gearbox handle is responsible for gear shifting (forward gear/reverse gear), marked button is for handbrake.

 MadCar steering wheel setup

Target is a target object/ an object to follow. Forecast frames present the number of frames where the car foreshows the movement of object for the track calculation.

Drive

It activates the car driving window.

 MadCar drive

To start/stop driving press ENTER.

Trailers

In order to join two vehicles add Trailer Hitch to the track in place where trailer will be attached.

 MadCar trailer hitch

Add Trailer Tongue to the trailer in place where truck will be attached.

 MadCar trailer tongue

Join Trailer Hitch with Trailer Tongue as shown below

Vehicles are now joined.

 Trailer

From now on if you move the truck the trailer will follow it

Tire Marks (requires V-Ray)

MadCarTrackTexture. Is used for making tire marks.

 MadCar tire track settings

MadCar Object - the MadCar object from which the texture generating traces.

  • General Intensity - the intensity of the traces in the normal movement of a vehicle.
  • Brake Intensity - the intensity of the traces when a wheel is slipping.
  • Samples - quality of marks. High values slow down the render.
  • Base Bump Intensity - total intensity of the bump.
  • Pattern Bump Intensity - bump value of the tire pattern.

MadcarTrackTexture need to be used in material of the object MadCar is driving on.

It can be used in any slot (Diffuse, Bump, Specular etc). In texture settings you need to specify which MadCar object it belongs to. If you need marks from multiple MadCars you need to mix several MadcarTrackTexture

Collision spheres

Collisions in MadCar.

There are 2 types of collisions to be calculated in MadCar simulation 1. Collisions between the wheels and the ground 2. Collisions between ”Collision Spheres“ and the ground.

By default, a car's body does not simulate the possible collision with obstacles or the ground in a rollover. If you need to simulate such an event, you need to add”Collision Spheres” to MadCar rig. Place them so that their combined volume is repeating the shape of your vehicle.

Try to keep number or spheres as little as possible (optimal number is 10-20), otherwise it may slow down the process of simulation. The “Rigidness” parameter controls the stiffness of the collision, and the parameter “Grip” controls friction. Obstacles that you are going to impact your car should be included in the geometry of the surface.

Collision Spheres usage example:

 collision spheres example

 collision spheres wireframe

 collision spheres

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Baking to key frames

We recently released a baking script

after you dropped it to your scene, you need to add to interface via “Customize User Interface”

Troubleshooting

Common problems

MadCar algorithms are based on real world physics, this requires real world dimensions of vehicles and other settings for correct work.

Controlling your vehicle

For perfect results in controlling your vehicle make sure all physics is correct, and simulate step by step

Start driving untill the point its starts going wrong, stop, rewind to the point it was fine, and continue from that point this applies to any controls you use

Following target or spline

MadCar based on the simulation with real life physical properties - and this is not always predictable. Abilities of a vehicle are limited by its physical parameters, turning radius, friction, brake force, power of the engine etc. But the motion of a target is not limited, so the vehicle can not always follow the target, because it has got real life physical limitations, so it can only try to do it.

License errors

In case of license malfunction and errors (which can be caused by disk reformatting, re installation of the operating system or components replacement) you are free to address the developer at any time by sending your request for a new *.key file to the e-mail mail@rendering.ru

However, in case of total replacement of a PC by a new one new license is not provided more often than once in half a year.

ATTENTION! Please always try to email from the same email address you used when you purchased the plug-in. If we can’t find your e-mail address from which you sent the ID file in our database and there is no explanation and receipt or order number in you email, your request may not be processed!

Please always attach you receipt or include order number to avoid any delays in communication.

Dll errors

  • Error Loading Dlls
  • Dll failed to initialize
  • Error code 126 - The specified module could not be found
  • MadCar.dlo failed to initialize

please make sure you have Microsoft Visual C++ 2010 Redistributable Package 32bit or 64bit installed

Microsoft Visual C++ 2010 Redistributable Package (x86)http://www.microsoft.com/en-gb/download/details.aspx?id=5555

Microsoft Visual C++ 2010 Redistributable Package (x64) http://www.microsoft.com/en-gb/download/details.aspx?id=14632

 check redistributable

on windows server 2012 check that c:\windows\system32\XINPUT9_1_0.DLL exist, this can be found on windows 7

Installation problems

make sure 3ds max is not running, (please double check in task manager too)

make sure you are installing with administrator rights (in windows 7 right click “run as administrator” even if you are logged in as admin)

make sure you choose right path for you 3ds max version

Other errors

Please make sure you download and install latest version from our forum and confirm that update was successful by checking version number in About panel of MadCar.

if this have not solved the problem please contact us at mail@rendering.ru , by sending description of the problem together with the following information:

  • MadCar version (screenshot of About panel is required)
  • OS version (inc 32 or 64 bit)
  • 3ds max version (inc 32 or 64 bit)
  • VRay version (if any)
  • some screenshots
  • and file with the problem when possible
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