Possible errors

java.lang.ArrayIndexOutOfBoundsException: 50
	at dsekercioglu.knn.knnCore.ags.kdtree.KdNode.addLeafPoint(KdNode.java:70)
	at dsekercioglu.knn.knnCore.ags.kdtree.KdNode.addPoint(KdNode.java:63)
	at dsekercioglu.knn.knnCore.ags.kdtree.KdTree.addPoint(KdTree.java:7)
	at dsekercioglu.knn.knnCore.KNNPredictor.addData(KNNPredictor.java:67)
	at dsekercioglu.knn.wfGun.gun.TestGun.wavePassed(TestGun.java:24)
	at dsekercioglu.knn.wfGun.Fang.updateWaves(Fang.java:122)
	at dsekercioglu.knn.wfGun.Fang.onScannedRobot(Fang.java:80)
	at dsekercioglu.knn.WhiteFang.onScannedRobot(WhiteFang.java:44)
	at robocode.ScannedRobotEvent.dispatch(ScannedRobotEvent.java:315)
	at robocode.Event$HiddenEventHelper.dispatch(Event.java:259)
	at net.sf.robocode.security.HiddenAccess.dispatch(HiddenAccess.java:191)
	at net.sf.robocode.host.events.EventManager.dispatch(EventManager.java:422)
	at net.sf.robocode.host.events.EventManager.processEvents(EventManager.java:376)
	at net.sf.robocode.host.proxies.BasicRobotProxy.executeImpl(BasicRobotProxy.java:423)
	at net.sf.robocode.host.proxies.BasicRobotProxy.execute(BasicRobotProxy.java:122)
	at net.sf.robocode.host.proxies.StandardRobotProxy.turnRadar(StandardRobotProxy.java:55)
	at robocode._AdvancedRadiansRobot.turnRadarRightRadians(_AdvancedRadiansRobot.java:150)
	at robocode.AdvancedRobot.turnRadarRightRadians(AdvancedRobot.java:1962)
	at dsekercioglu.knn.wfEyes.Lock.run(Lock.java:17)
	at dsekercioglu.knn.WhiteFang.run(WhiteFang.java:39)
	at net.sf.robocode.host.proxies.HostingRobotProxy.callUserCode(HostingRobotProxy.java:274)
	at net.sf.robocode.host.proxies.HostingRobotProxy.run(HostingRobotProxy.java:221)
	at net.sf.robocode.host.proxies.BasicRobotProxy.run(BasicRobotProxy.java:44)
	at java.lang.Thread.run(Thread.java:745)

I got this exception after some testing.

This is a bug in Rednaxela’s kd-tree. I created a PR to fix it in his bitbucket a few years ago, but no response.

IIRC, This bug happens when points are so concentrated that spliting happens more than once in one call, which is not considered at all. That’s why it happens so rarely, and only with some set of dimensions.

Feel free to use my Kd-Tree, it has protections against infinite splitting and is similar performance to Rednaxela (perhaps even better in mixed workloads due to cache locality).

Sorry for answering late; I actually wrote an answer but I suppose there was a problem with Wi-fi. WhiteFang has already started to use it and there is also range search in your tree which is wonderful.