it turns out the test-entering is broken; will fix later idk; Threadparallel.startAllWaitForDie seems to work as intended

src/net/torvald/terrarum/modulebasegame/EntryPoint.kt

@@ -86,7 +86,7 @@ class EntryPoint : ModuleEntryPoint() {
 
 
 
-        println("Welcome back!")
+        println("[Basegame.EntryPoint] Welcome back!")
     }
 
     override fun dispose() {

src/net/torvald/terrarum/modulebasegame/gameworld/WorldSimulator.kt

@@ -52,6 +52,7 @@ object WorldSimulator {
     private val ingame = Terrarum.ingame!!
     private val world = ingame.world
 
+    // TODO use R-Tree instead?  https://stackoverflow.com/questions/10269179/find-rectangles-that-contain-point-efficient-algorithm#10269695
     private var actorsKDTree: KDTree? = null
 
     fun resetForThisFrame() {