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Thanks ;) Anyway, are you trying to build your own BulletShielder? Worth mention that a lot of good shielders are open source (although I haven't looked into any of them yet).

Yes, I was. I started reading the tutorial, but I found it really counter intuitive, so I decided to go by the bullet shadowing approach (or very similar to it). I looked at EnergyDome after struggling for a few hours, just to notice that the only difference was the use of Virtual Guns and the multi-movement thing. So it was doing pretty much the same thing I was for the intersection. I got happy and thought I was going to find where my bug could be. At this point I couldn't even shield a single bullet, so the VG thing was not a game changer. It turns out that I couldn't fix it. I'm just supposing it's in the actual intersection algorithm, since I can't even shield against Tracker after moving a fraction of a pixel. It should work easily if was doing things right, correct?

Even if your algorithm is correct, it won't work with wrong target. You could try SimpleBot 0.022c, which uses traditional HOT (for stationary bot) with random fire power. If the algorithm is all right, it would at least shield a lot.

That version is not in http://robocode-archive.strangeautomata.com/robots/ :P

Just added a link to it ;) Just forgot that It is never released.

Got shooted some times, but shielded well. All the times I was hit, the error compared to my predicted angle was something around 10^(-16). I suppose it's not enough to cause a miss. Or is it?