calculate u,v parameter for point on triangle
adjust car fall behavior

let it be reseted more closely to where it fell.
add class for collision, mushroom, cone

not implement yet
just to save

need to add free camera next.
added a free camera.

to do : add zoom in/out feature. then adjust the mushroom's size.
finish most of mushroom part
firstly add sqlite support

not fully implemented.
change recorder to output into database
add keyboard recorder