Gek54
I am going to take the_con calling Forza's physics "on par with GT4" as meaning, "Uh wow, Forza does have great physics and better than GT4...but I will never say anything is better than GT4."
No.
After playing them both, with all assists off, I have come to determine that both of these games have physics engines that have their strengths and weaknesses, but in the end the come out equal.
Where Forza stands out is it's Tire Model, which is far ahead of GT4.
Do NOT confuse the two. If you don't undestand, then don't comment.
Anyway, about Driveatar.
It's actually fairly simple, and not very complex at all. Basically, drivatar is a series of races in which the race line is presented too you. You drive the track as many times as you like. While you follow the race line, you are graded as to how well you take the line, more or less it is graded by time spend in the turn, and the accuracy of your turn. If you go extremely slow, but stay on the line, you will get a rating of rougly 50%+. If you go too fast, but fly off the line, you will get something like 40%. So far I have only been able to achieve 88%.
Initially you are given points that coincide with your percentage, i..e. if you get 77% you will recieve 77 points. Later, you will recieve fewer points for the same kind of turn.
The drivatar learns how to take certain turns. Kinks, Hairpins, sweeps, constant radius turns, decreasing radius turns, etc., the more points you earn for an individual type of turn, the better your drivatar will be at taking those turns.
It doesn't end there though. He can also learn how to use different cars, i.e. FF, FR, MR, RR, General, etc. Initially you will only gain General points, however more experience with an FF car, or an FR car will yeild better driving skills with these specific cars.
As you learn, you will notice that the AI will begine to drive more like you. It's important that you constantly play and teach your Drivatar, as it is your competition, if you neglect it, you will soon find yourself leaving the comp behind, and the game will get boooooring.
More updates later.