lxx.Tomcat 3.55 vs cs.ags.Scarlet 1.1c

No, all waves, bullets, targets etc. are dropped out at end of each round. But yes, "value" objects are pretty big, thanks, i will think about it. I do not understand you about my R-tree.

Well, I just meant that since you are the only one using it, it's relatively untested compared to, for instance, Rednaxela's kd-tree.