Fixed or improved a variety of CPU and RAM issues

.gitignore

@@ -8,6 +8,7 @@ classes/
 .classpath
 .project
 .kotlin
+/.idea/AndroidProjectSystem.xml
 # IntelliJ-User Specific
 .idea/**/workspace.xml
 .idea/**/tasks.xml

src/main/java/com/projectswg/holocore/resources/support/npc/ai/NavigationPoint.kt

@@ -120,9 +120,13 @@ class NavigationPoint(val parent: SWGObject?, val location: Location, val speed:
 		}
 
 		fun from(sourceParent: SWGObject?, source: Location, destinationParent: SWGObject?, destination: Location, speed: Double): List<NavigationPoint> {
+			assert(sourceParent == null || sourceParent is CellObject) { "invalid source parent" }
+			assert(destinationParent == null || destinationParent is CellObject) { "invalid destination parent" }
+			assert(speed > 0) { "speed must be greater than zero, was $speed" }
+
+			if (sourceParent == destinationParent) return from(sourceParent, source, destination, speed)
+
 			var source = source
-			assert(sourceParent == null || sourceParent is CellObject)
-			assert(destinationParent == null || destinationParent is CellObject)
 			val route = getBuildingRoute(sourceParent as CellObject?, destinationParent as CellObject?, source, destination) ?: return ArrayList()
 			val points = createIntraBuildingRoute(route, sourceParent, source, speed)
 			if (route.isNotEmpty()) source = if (destinationParent == null) buildWorldPortalLocation(route[route.size - 1]) else buildPortalLocation(route[route.size - 1])
@@ -145,10 +149,14 @@ class NavigationPoint(val parent: SWGObject?, val location: Location, val speed:
 			val totalDistance = source.distanceTo(destination)
 			val path: MutableList<NavigationPoint> = ArrayList()
 
+			assert(speed > 0) { "speed must be greater than zero, was $speed" }
+			assert(totalDistance < 5_000) { "distance between waypoints is too large ($totalDistance)" }
+
 			var currentDistance = speed
 			while (currentDistance < totalDistance) {
 				path.add(interpolate(parent, source, destination, speed, currentDistance / totalDistance))
 				currentDistance += speed
+				assert(path.size < 10_000) { "path length growing too large" }
 			}
 			path.add(interpolate(parent, source, destination, speed, 1.0))
 			return path
@@ -229,7 +237,7 @@ class NavigationPoint(val parent: SWGObject?, val location: Location, val speed:
 
 		private fun buildWorldPortalLocation(portal: Portal): Location {
 			val building = portal.cell1!!.parent
-			assert(building is BuildingObject)
+			assert(building is BuildingObject) { "cell parent wasn't a building" }
 			return Location.builder(buildPortalLocation(portal)).translateLocation(building!!.location).build()
 		}
 

src/main/java/com/projectswg/holocore/resources/support/npc/ai/NpcPatrolMode.kt

@@ -51,15 +51,19 @@ class NpcPatrolMode(obj: AIObject, waypoints: List<ResolvedPatrolWaypoint>) : Np
 			waypointBuilder.add(waypointBuilder[0])
 		}
 		
-		this.waypoints = ArrayList<NavigationPoint>(128)
-		for (i in 1 until waypointBuilder.size) {
-			val source = waypointBuilder[i - 1]
-			val destination = waypointBuilder[i]
-			this.waypoints.addAll(NavigationPoint.from(source.parent, source.location, destination.parent, destination.location, walkSpeed))
-			if (destination.delay > 0)
-				this.waypoints.addAll(NavigationPoint.nop(this.waypoints[this.waypoints.size - 1], destination.delay.toInt() - 1))
+		if (waypointBuilder.isEmpty()) {
+			this.waypoints = ArrayList<NavigationPoint>(128)
+		} else {
+			this.waypoints = ArrayList<NavigationPoint>(128)
+			for (i in 1 until waypointBuilder.size) {
+				val source = waypointBuilder[i - 1]
+				val destination = waypointBuilder[i]
+				this.waypoints.addAll(NavigationPoint.from(source.parent, source.location, destination.parent, destination.location, walkSpeed))
+				if (destination.delay > 0)
+					this.waypoints.addAll(NavigationPoint.nop(this.waypoints[this.waypoints.size - 1], destination.delay.toInt() - 1))
+			}
+			this.waypoints.addAll(NavigationPoint.from(waypointBuilder[waypointBuilder.size - 1].parent, waypointBuilder[waypointBuilder.size - 1].location, waypointBuilder[0].parent, waypointBuilder[0].location, walkSpeed))
 		}
-		this.waypoints.addAll(NavigationPoint.from(waypointBuilder[waypointBuilder.size - 1].parent, waypointBuilder[waypointBuilder.size - 1].location, waypointBuilder[0].parent, waypointBuilder[0].location, walkSpeed))
 	}
 	
 	override suspend fun onModeStart() {

src/main/java/com/projectswg/holocore/resources/support/npc/ai/dynamic/DynamicMovementObject.kt

@@ -39,13 +39,16 @@ import com.projectswg.holocore.resources.support.objects.permissions.AdminPermis
 import com.projectswg.holocore.resources.support.objects.swg.creature.CreatureDifficulty
 import com.projectswg.holocore.resources.support.objects.swg.custom.AIBehavior
 import com.projectswg.holocore.resources.support.objects.swg.custom.AIObject
-import java.util.concurrent.ThreadLocalRandom
 import kotlin.math.cos
+import kotlin.math.max
+import kotlin.math.min
 import kotlin.math.sin
+import kotlin.random.Random
 
 class DynamicMovementObject(var location: Location, val name: String, val baseSpeed: Double = 0.0) {
-	
-	var heading = ThreadLocalRandom.current().nextDouble() * 2 * Math.PI
+
+	private val random = Random(System.currentTimeMillis())
+	var heading = random.nextDouble() * 2 * Math.PI
 	private val groupMarker = ObjectCreator.createObjectFromTemplate("object/path_waypoint/shared_path_waypoint_droid.iff")
 	private val npcs = ArrayList<AIObject>()
 	private var lastUpdate = System.nanoTime()
@@ -70,7 +73,6 @@ class DynamicMovementObject(var location: Location, val name: String, val baseSp
 		val bossSpawner = Spawner(simpleSpawnInfo.withDifficulty(CreatureDifficulty.BOSS).build(), groupMarker)
 		val eliteSpawner = Spawner(simpleSpawnInfo.withDifficulty(CreatureDifficulty.ELITE).build(), groupMarker)
 		val normalSpawner = Spawner(simpleSpawnInfo.withDifficulty(CreatureDifficulty.NORMAL).build(), groupMarker)
-		val random = ThreadLocalRandom.current()
 		if (random.nextDouble() < 0.25)
 			npcs.add(NPCCreator.createSingleNpc(bossSpawner))
 		npcs.add(NPCCreator.createSingleNpc(eliteSpawner))
@@ -102,7 +104,7 @@ class DynamicMovementObject(var location: Location, val name: String, val baseSp
 				.setZ(location.z + radius * sin(angle))
 			newLocationBuilder.setY(ServerData.terrains.getHeight(newLocationBuilder))
 			val newLocation = newLocationBuilder.build()
-			val speed = it.worldLocation.distanceTo(newLocation) / elapsedTime
+			val speed = min(30.0, max(1.0, it.worldLocation.distanceTo(newLocation) / elapsedTime))
 			it.moveTo(null, newLocationBuilder.build(), speed)
 		}
 	}
@@ -114,7 +116,7 @@ class DynamicMovementObject(var location: Location, val name: String, val baseSp
 			return
 		}
 
-		val newHeading = heading + Math.PI * (1 + ThreadLocalRandom.current().nextDouble() - 0.5)
+		val newHeading = heading + Math.PI * (1 + random.nextDouble() - 0.5)
 		val secondProposed = calculateNextPosition(newHeading, distance)
 		if (isValidNextPosition(secondProposed)) {
 			location = secondProposed
@@ -123,7 +125,7 @@ class DynamicMovementObject(var location: Location, val name: String, val baseSp
 		}
 		
 		// Brute Force Escape
-		val randomRotationFromNorth = ThreadLocalRandom.current().nextDouble() * Math.TAU
+		val randomRotationFromNorth = random.nextDouble() * Math.TAU
 		for (clockwiseRotation in 0..35) {
 			val bruteForceHeading = (clockwiseRotation * 10) * Math.PI / 180.0 + randomRotationFromNorth
 			val proposed = calculateNextPosition(bruteForceHeading, distance)
@@ -135,6 +137,7 @@ class DynamicMovementObject(var location: Location, val name: String, val baseSp
 		}
 		
 		// TODO: destroy this object, we got stuck
+		location = firstProposed
 		assert(false)
 	}
 	

src/main/java/com/projectswg/holocore/resources/support/objects/swg/SWGObject.java

@@ -796,17 +796,62 @@ public abstract class SWGObject extends BaselineObject implements Comparable<SWG
 	public Location getWorldLocation() {
 		return location.getWorldLocation(this);
 	}
-	
+
 	public double distanceTo(@NotNull SWGObject obj) {
-		if (parent == obj.getParent())
-			return getLocation().distanceTo(obj.getLocation());
-		return getWorldLocation().distanceTo(obj.getWorldLocation());
+		SWGObject tmp = this;
+		double selfX = 0.0;
+		double selfY = 0.0;
+		double selfZ = 0.0;
+		while (tmp != null) {
+			Location loc = tmp.getLocation();
+			selfX += loc.getX();
+			selfY += loc.getY();
+			selfZ += loc.getZ();
+			tmp = tmp.getParent();
+		}
+
+		tmp = obj;
+		double otherX = 0.0;
+		double otherY = 0.0;
+		double otherZ = 0.0;
+		while (tmp != null) {
+			Location loc = tmp.getLocation();
+			otherX += loc.getX();
+			otherY += loc.getY();
+			otherZ += loc.getZ();
+			tmp = tmp.getParent();
+		}
+
+		selfX -= otherX;
+		selfY -= otherY;
+		selfZ -= otherZ;
+		return Math.sqrt(selfX * selfX + selfY * selfY + selfZ * selfZ);
 	}
-	
+
 	public double flatDistanceTo(@NotNull SWGObject obj) {
-		if (parent == obj.getParent())
-			return getLocation().flatDistanceTo(obj.getLocation());
-		return getWorldLocation().flatDistanceTo(obj.getWorldLocation());
+		SWGObject tmp = this;
+		double selfX = 0.0;
+		double selfZ = 0.0;
+		while (tmp != null) {
+			Location loc = tmp.getLocation();
+			selfX += loc.getX();
+			selfZ += loc.getZ();
+			tmp = tmp.getParent();
+		}
+
+		tmp = obj;
+		double otherX = 0.0;
+		double otherZ = 0.0;
+		while (tmp != null) {
+			Location loc = tmp.getLocation();
+			otherX += loc.getX();
+			otherZ += loc.getZ();
+			tmp = tmp.getParent();
+		}
+
+		selfX -= otherX;
+		selfZ -= otherZ;
+		return Math.sqrt(selfX * selfX + selfZ * selfZ);
 	}
 	
 	public double getX() {

src/test/java/com/projectswg/holocore/resources/support/data/server_info/loader/NpcPatrolRouteLoaderTest.kt

@@ -0,0 +1,108 @@
+/***********************************************************************************
+ * Copyright (c) 2025 /// Project SWG /// www.projectswg.com                       *
+ *                                                                                 *
+ * ProjectSWG is an emulation project for Star Wars Galaxies founded on            *
+ * July 7th, 2011 after SOE announced the official shutdown of Star Wars Galaxies. *
+ * Our goal is to create one or more emulators which will provide servers for      *
+ * players to continue playing a game similar to the one they used to play.        *
+ *                                                                                 *
+ * This file is part of Holocore.                                                  *
+ *                                                                                 *
+ * --------------------------------------------------------------------------------*
+ *                                                                                 *
+ * Holocore is free software: you can redistribute it and/or modify                *
+ * it under the terms of the GNU Affero General Public License as                  *
+ * published by the Free Software Foundation, either version 3 of the              *
+ * License, or (at your option) any later version.                                 *
+ *                                                                                 *
+ * Holocore is distributed in the hope that it will be useful,                     *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of                  *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                   *
+ * GNU Affero General Public License for more details.                             *
+ *                                                                                 *
+ * You should have received a copy of the GNU Affero General Public License        *
+ * along with Holocore.  If not, see <http://www.gnu.org/licenses/>.               *
+ ***********************************************************************************/
+package com.projectswg.holocore.resources.support.data.server_info.loader
+
+import com.projectswg.common.data.location.Location
+import com.projectswg.common.data.swgiff.parsers.SWGParser
+import com.projectswg.holocore.resources.support.data.server_info.loader.npc.NpcPatrolRouteLoader
+import com.projectswg.holocore.resources.support.npc.ai.NavigationPoint
+import com.projectswg.holocore.resources.support.npc.spawn.Spawner
+import com.projectswg.holocore.services.support.objects.ObjectStorageService
+import com.projectswg.holocore.test.runners.TestRunnerNoIntents
+import org.junit.jupiter.api.AfterAll
+import org.junit.jupiter.api.Assertions
+import org.junit.jupiter.api.BeforeAll
+import org.junit.jupiter.api.Test
+import java.util.concurrent.atomic.AtomicBoolean
+
+class NpcPatrolRouteLoaderTest : TestRunnerNoIntents() {
+
+	@Test
+	fun `test patrol route waypoints`() {
+		fun checkRouteLeg(sourceWaypoint: Spawner.ResolvedPatrolWaypoint, destinationWaypoint: Spawner.ResolvedPatrolWaypoint) {
+			val route = NavigationPoint.from(sourceWaypoint.parent, sourceWaypoint.location, destinationWaypoint.parent, destinationWaypoint.location, 1.0)
+			assert(route.size < 500) { "distance between waypoints is too large (${route.size})" }
+			assert(sourceWaypoint.location.terrain == destinationWaypoint.location.terrain) { "terrain mismatch along route" }
+		}
+
+		val hasError = AtomicBoolean(false)
+		ServerData.npcPatrolRoutes.forEach { route ->
+			try {
+				val resolvedRoute = route.map { Spawner.ResolvedPatrolWaypoint(it) }
+				assert(route.isNotEmpty()) { "route is empty" }
+				for (i in 1 until route.size) {
+					checkRouteLeg(resolvedRoute[i - 1], resolvedRoute[i])
+				}
+				if (route[0].patrolType == NpcPatrolRouteLoader.PatrolType.LOOP) checkRouteLeg(resolvedRoute[route.size - 1], resolvedRoute[0])
+			} catch (e: AssertionError) {
+				System.err.println("Patrol group '${route[0].groupId}' error: ${e.message}")
+				hasError.set(true)
+			}
+		}
+		Assertions.assertFalse(hasError.get())
+	}
+
+	@Test
+	fun `test NPC to patrol route start`() {
+		val hasError = AtomicBoolean(false)
+		ServerData.npcStaticSpawns.spawns.parallelStream().forEach { spawn ->
+			if (spawn.patrolId.isEmpty() || spawn.patrolId == "0") return@forEach
+			val spawnerLocation = Location.builder().setTerrain(spawn.terrain).setX(spawn.x).setY(spawn.y).setZ(spawn.z).build()
+			val route = ServerData.npcPatrolRoutes[spawn.patrolId]
+			val routeLocation = Location.builder().setTerrain(route[0].terrain).setX(route[0].x).setY(route[0].y).setZ(route[0].z).build()
+			val distanceToRoute = spawnerLocation.distanceTo(routeLocation)
+			try {
+				assert(spawn.buildingId == route[0].buildingId) { "NPC not in same building as route" }
+				assert(spawn.cellId == route[0].cellId) { "NPC not in same cell as route" }
+				assert(distanceToRoute < 500) { "Spawner distance to route too large ($distanceToRoute)" }
+				assert(spawnerLocation.terrain == routeLocation.terrain) { "terrain mismatch along route" }
+			} catch (e: AssertionError) {
+				System.err.println("Patrol spawner '${spawn.npcId}' with route '${spawn.patrolId}' error: ${e.message}")
+				hasError.set(true)
+			}
+		}
+		Assertions.assertFalse(hasError.get())
+	}
+
+	companion object {
+
+		private var objectStorageService = ObjectStorageService()
+
+		@BeforeAll
+		@JvmStatic
+		fun setup() {
+			SWGParser.setBasePath("serverdata")
+			objectStorageService.initialize()
+		}
+
+		@AfterAll
+		@JvmStatic
+		fun tearDown() {
+			objectStorageService.terminate()
+		}
+	}
+
+}