Hickup in rankings

Hi all, seems that for some reason the participants list for roborumble, minirumble and nanorumble had a hickup (not for microrumble ??)

This means that the rankings start again from zero, but luckily all older results get in as soon as one battle has been fought. In order to get the rankings up-to-date again, every bot has to fight every other bot one time.

So, if you have the time and opportunity, please start your rumble client.

It seems less worse than I thought at first sight. As soon as a bot has fought a battle, it appears in the ranking.

When all bots are present, all bots have to fight one battle to get all pairings back. Hopefully LiteRumble is smart enough to get that done in one pass.

That happens once every a few years ;( Maybe LiteRumble should have some check to prevent removing more than 100 bots at a time? Anyway LiteRumble *is* smart enough to recover with only 2000+ battles (1000+ to add back, 1000+ again to fix pairings), instead of 1000000 battles.

However a bug in the rumble client actually prioritized already existing bots over bots without ranking, except in the clean run case. So it actually takes much more battles to add missing bots back ;(

I submitted a PR for this bug. https://github.com/robo-code/robocode/pull/61.

Bots without rank should always take highest priority, in all scenarios.

Bad news. Once a bot is added, the pairings are only updated for newly added battles. e.g. one bot with 400 pairings, gets to 401 when one battle is submitted. The rest of the pairings seems not to add automatically. So this means 1000000 battles are needed. ;(

I submitted a PR to literumble. https://github.com/jkflying/literumble/pull/3 Hopefully this PR will solve the issue, and with 1000+ battles, the ranking should restore stable.

It is restoring quite fast. At this moment half of the bots in roborumble have all their pairings back. And most of the others have at least 800 pairings.