There's also a two wheeling trick which should be easier to script:

If wheels in contact < 2
then
Add 5 points every .3 second to the trick score
else
stop giving points and record the trick score to main score

ok, you need to add an EventOnContact object and link it to the ground and each wheel (one EventOnContact per wheel) of the car, for this you select the wheel of the car like when you select it to attach the skinmesh wheel.
now you know when the wheels are in contact with the ground, and the script would be:if (IN_eventOnContact < 1) { //the wheel is not touching the ground }
so, I dont know if you want to add points when the car is doing a wheelie (running only on the rear wheels) or every time only two wheels are touching the ground.

in the first case you would monitor the front wheels:if (IN_eventOnContactLeftFrontWheel < 1 && IN_eventOnContactLeftFrontWheel < 1) { //sum points }
in the second one you should use an aux var that count how many wheels are touching the ground and sum +1 for every wheel in contact with the ground:wheelsTouchingGround=0;
if (IN_eventOnContactLeftFrontWheel > 0) { wheelsTouchingGround++; }
if (IN_eventOnContactRightFrontWheel > 0) { wheelsTouchingGround++; }
if (IN_eventOnContactLeftRearWheel > 0) { wheelsTouchingGround++; }
if (IN_eventOnContactRightRearWheel  > 0) { wheelsTouchingGround++; }
if (wheelsTouchingGround == 2) { //sum points }
to sum points, 5 every .3 seconds would be something like 0.25 for each script cycle, so //sum points would be something like:
score+=0.25;
if you want to sum points for each trick and sum those points to the total score when each trick ends then you need to use an aux var than is false when you are not making a trick and true when you are. when this var is false you need to check if trickScore > 0, and if so, then is because you just finished a trick and earned some points, so you gonna sum 'em to the totalScore+=trickScore and reset the score = 0

very nice trick system!

bool trickDone=false;

then...

{
if (z > 90 && !trickdone) {
   iObjectStart(OBJ_154);
   trickDone=true;
}
}

and you have to set trickDone=false again when ... I dont know, when z is 0 again? when the trick is done and is time to count another one.

Here's the full script.
//OBJ_154 is the Counter
//OBJ_22 is the RigidBody
//OBJ_0 is the Skinmesh
Vector3 location;
Quaternion orientationR;
Quaternion orientationM;
float offset=0;
float x;
float y;
float z;
string xyz="xyz";
bool trickDone=false;

void Main()

{
if (z > 90 && !trickDone) {
   iObjectStart(OBJ_154);
   trickDone=true;
}

   //set location
   iObjectLocation(OBJ_22,location);
   iObjectLocationSet(OBJ_0,location);

   //set orientation
   iObjectOrientation(OBJ_22,orientationR);
   iQuaternionToEulerAngles(orientationR,x,y,z);
   x += offset;
   iQuaternionFromEulerAngles(orientationM,x,y,z,xyz);
   iObjectOrientationSet(OBJ_0,orientationM);
}


Ok, I got a clockwise, counterclockwise detector working. But it only detects changes around 0 degrees.

First off, does anyone know how to make a timer in a script? So I don't need two external ones?

Be sure to check out the projec to understand how it works.

Sorry for the tripple post, but this is so confusing and I need help.

Oh.. one more question: Should I use bool clockwise = false; as a variable I can read and write?

Yea, it's probably because it was made with version 6.42..
But anyway, it's not ready to use in a game yet, but if you can help me improve it, I could go remake it on a different computer with version 6.40.

Do you have version 6.40? Give me a few mins and I'll have it posted....

Sorry, that took forever. see if this works. It still has a little bug in it.. I'll try to fix it here...
Edit: Ok fixed!