This is my unity game design diary

To a collider control game , a mass value means the char more heavier; center of mass: the smaller the value is, the lighter the body it is. makes it not bouncy around

rigidbody.centerOfMass.y = -2;

1. How to coding a car racing game in Unity

http://www.gotow.net/andrew/blog/?page_id=78

2.

Create a Mario style side scroller game in Unity

http://www.swinburne.edu.au/design/tutorials/P-unity/T-Create-a-Mario-style-side-scroller-game-in-Unity/ID-257/

3. Gounded

http://www.youtube.com/watch?v=V9mb2SBYLXs&feature=related

4.  checking grounded —- p 96 on unity ebook

Unity currently imports from Maya

1. All nodes with position, rotation and scale. Pivot points and Names are also imported.
2. Meshes with vertex colors, normals and up to 2 UV sets.
3. Materials with Texture and diffuse color. Multiple materials per mesh.
4. Animations FK & IK
5. Bone-based animations

Unity does not import blend shapes. Use Bone-based animations instead. Unity automatically triangulates polygonal meshes when importing, thus there is no need to do this manually in Maya.