Reverse Tracks

[rookie1]

I think we need one more change in BEZIER::Attach(), that is to reverse the sequence of the 4 corner points. This is because the car's relative distance from starting line is calculated as follows (you can look at Vamos_World::World::update_race_position() for the details),

car's distance from starting line = current patch's distance from starting line + car's distance from the beginning of current patch

Code:

|<------ a ----->|<---- b ---->|    
.................+--------------------------+
                 |                          |
                 |                          |
                 |-------------*            |
                 |                          |
.................+--------------------------+

a = current patch's distance from starting line
b = car's distance from the beginning of current patch
* is the car

The beginning of current patch is the straight line formed by points[3][0] and points[3][3] of the patch. In a reversed track, it should be the line formed by the other 2 corner points.

I hope the above makes sense.