Automatic transmission

[thelusiv]

Tonight I checked in a bunch of changes to automatic transmission mode. Now the clutch is used, and the down shift point is much better.

rookie1, I used your suggested downshift algorithm but changed one thing. Using the raw "optimal" shift point using that method, I found that sometimes (on some cars) it would shift up, then back down immediately, then back up and down repeatedly. Thus I made it shift slightly lower than the optimal point:

Code:

down shift point = optimal point - ( 100 / current gear )

so for instance, in gear 4, it would shift at the optimal point less 25, in gear 5 it would shift down at the optimal point less 20. The reason I didn't subtract off a constant amount was that otherwise I found caces where it would shift from 5th to 4th when really it should shift from 5th to 3rd (too much overlap).

So anyway, that's how it's done now. Please test this by driving different cars using it.

There are a few (possible) issues with this mode. Since up and down shifting relies on the peak engine RPM, there could be some cars with less than optimal peak engine RPM settings, where automatic shifting could be a little strange. Another issue is that when using a button or key control as gas, the gas must be released a little early before the shift happens or the RPM will jump immediately to the maximum (because the gas is still pressed, and the clutch and flywheel are now disengaged). I'll see if I can find a workaround for this...