HOF2Lap Limitations and Future Plans
First off, let me say that I'm not a fan of Geoff Crammond; the phrase I
normally use to describe people like him who write superficially good code
is "a triumph of ingenuity over intelligence", that is, his basic
designs are poorly thought out but his clearly very creative mind somehow
manages to code around this and the result is something almost but not quite
brilliant. The reason I'm telling you this is so that you understand the
perverse file format which is a GP2 hot lap has made life very difficult for
me whilst writing HOF2Lap and is the central cause of the program's
Technical explanations for these problems appear in Gizmo's GP2 FAQ as part of the HOF2Lap Home Page.
Please read that document before sending a bug report.
Okay, on to the actual problems (for which there is a
- If you drive two or more laps in succession, and save a hot lap which is
slower than a following lap, HOF2Lap cannot find the correct lap time and
will instead display the faster time. This is most noticable if you try
to save the last lap of race (but that's not actually useful anyway!).
Note that whilst it's possible to use this "feature" to fool HOF2Lap into
producing "false" authcodes, the actual replay when viewed is still
correct. In general, HOF2Lap is not viable for arbitrary race laps.
- Qualifying laps which are disqualified (because you cross the line at
the end of lap number 12 when you should have returned to the pits)
cannot be displayed correctly.
- HOF2Lap may be unpredictable if multiple drivers are selected. If you
find it doesn't work for a particular lap, send me a copy and I'll take
- More limits are described in the
The solution is to improve the hotlap file structure.
GP2Lap does exactly this by adding vital data to the file from within GP2.
Since it has access to all of GP2's real-time internal data, the whole
problem of not having all the needed data in the hotlap is solved.
Of course, original hotlaps will still have the same problems mentioned
above. To make use of the new hotlap structure, it's necessary to use
GP2Lap with GP2 while driving and saving your laps. See the
GP2Lap home page for more
Things to do
The current version of HOF2Lap has a few limitations which can and will be
corrected in future versions:
- Use the setup in it's encoded version. At the moment, if you enter the
pits and alter your setup, then save a hot lap before you exit the pits
again, the setup listed will be wrong. The whole area of setup handling
is tricky; if you notice a discrepency between the setup listed and the
one you actually used, please send me a copy of your hot lap. Thanks.
HOF2Lap is untested during linked play. It may work fine; let me know if
you can confirm or refute this.
I also have yet to publicly release any code for interpreting the
authentication codes produced by HOF2Lap. My recommendation to those running
hot lap and race competitions is to ask competitors to send in actual hot
laps, and for HOF2Lap to be used to check each lap. If this is not possible,
please contact me to see if we can make arrangements
to use the codes directly.