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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
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?
No, it's not enough. Anything below 1e-8 can be considered as round-off errors, and the firing range you shadowed is much much bigger. You may try some debug graphics to see if everything works as expected, say, if they collide at calculated point.
That could be enough to cause a miss if you aren't moving to intersect the bullet. I think you should check what the predicted width of your shielded area is, and compare that to EnergyDome. It is a balance moving when you make the shot to get a bigger intersection area, because that means learning guns might learn your movement and not shoot HOT anymore. But not moving at all means your intersection width might be too small to be able to hit if enemies are predicting their movement.
