Vehicle Wrapper -- Blender 3D Game Engine


1.  Position the car's object center (center of gravity).

The car's object center is the center of gravity.  
Force is applied to the tire's object center.  
A car with a high center of gravity will 'pop a wheelie' every time you step on the gas.

3D View window
Select Car.
Edit mode.
Tab key
3D View menu >> Mode box >> Edit Mode
Select all vertices
A key
3D View menu >> Select >> Select/Deselect All
 Move vertices
G key
3D View menu >> Mesh >> Transform >> Grab/Move

2.  Align car axis.

The vehicle wrapper uses the y-axis for movement. 

Car model: 
y-axis is length. 
x-axis is width. 
z-axis is height

Enable Draw Axis

Select Car.  Object Mode.  Viewport Shading box >> Wireframe

Buttons Window menu >> Object (F7) >> Object buttons
Draw tab
Draw Extra
Axis button

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