Misc fixes regarding NPC behavior tree, but they still dont function properly (except ship pet)

gradle.properties

@@ -3,7 +3,7 @@ org.gradle.jvmargs=-Xmx2g -XX:MaxMetaspaceSize=512m
 
 kotlinVersion=1.9.10
 kotlinCoroutinesVersion=1.8.0
-kommonsVersion=3.0.1
+kommonsVersion=3.1.0
 
 ffiVersion=2.2.13
 lwjglVersion=3.3.0

luna/src/main/java/org/classdump/luna/runtime/ResumeInfo.java

@@ -40,7 +40,7 @@ class ResumeInfo {
       if (resumable instanceof ProtectedResumable) {
         // top is protected, can handle the error
         ProtectedResumable pr = (ProtectedResumable) resumable;
-        pr.resumeError(context, savedState, Conversions.toErrorObject(error));
+        pr.resumeError(context, savedState, error);
         Dispatch.evaluateTailCalls(context);
         return true;
       } else {

src/main/kotlin/ru/dbotthepony/kstarbound/Registries.kt

@@ -4,7 +4,10 @@ import com.google.common.collect.ImmutableList
 import com.google.common.collect.ImmutableMap
 import com.google.gson.GsonBuilder
 import com.google.gson.JsonArray
+import com.google.gson.JsonElement
+import com.google.gson.JsonNull
 import com.google.gson.JsonObject
+import com.google.gson.JsonPrimitive
 import com.google.gson.JsonSyntaxException
 import com.google.gson.TypeAdapterFactory
 import com.google.gson.reflect.TypeToken
@@ -14,6 +17,7 @@ import kotlinx.coroutines.future.asCompletableFuture
 import kotlinx.coroutines.future.await
 import kotlinx.coroutines.launch
 import org.apache.logging.log4j.LogManager
+import ru.dbotthepony.kommons.gson.contains
 import ru.dbotthepony.kommons.util.KOptional
 import ru.dbotthepony.kstarbound.defs.AssetReference
 import ru.dbotthepony.kstarbound.defs.DamageKind
@@ -21,14 +25,13 @@ import ru.dbotthepony.kstarbound.defs.Json2Function
 import ru.dbotthepony.kstarbound.defs.JsonConfigFunction
 import ru.dbotthepony.kstarbound.defs.JsonFunction
 import ru.dbotthepony.kstarbound.defs.MarkovTextGenerator
-import ru.dbotthepony.kstarbound.defs.Species
+import ru.dbotthepony.kstarbound.defs.actor.Species
 import ru.dbotthepony.kstarbound.defs.StatusEffectDefinition
 import ru.dbotthepony.kstarbound.defs.ThingDescription
 import ru.dbotthepony.kstarbound.defs.item.TreasurePoolDefinition
 import ru.dbotthepony.kstarbound.defs.monster.MonsterSkillDefinition
 import ru.dbotthepony.kstarbound.defs.monster.MonsterTypeDefinition
-import ru.dbotthepony.kstarbound.defs.npc.NpcTypeDefinition
-import ru.dbotthepony.kstarbound.defs.npc.TenantDefinition
+import ru.dbotthepony.kstarbound.defs.actor.TenantDefinition
 import ru.dbotthepony.kstarbound.defs.`object`.ObjectDefinition
 import ru.dbotthepony.kstarbound.defs.actor.player.TechDefinition
 import ru.dbotthepony.kstarbound.defs.animation.ParticleConfig
@@ -54,6 +57,7 @@ import ru.dbotthepony.kstarbound.item.ItemRegistry
 import ru.dbotthepony.kstarbound.json.JsonPatch
 import ru.dbotthepony.kstarbound.json.builder.JsonFactory
 import ru.dbotthepony.kstarbound.json.fromJsonTreeFast
+import ru.dbotthepony.kstarbound.json.mergeJson
 import ru.dbotthepony.kstarbound.world.terrain.TerrainSelectorType
 import ru.dbotthepony.kstarbound.util.AssetPathStack
 import ru.dbotthepony.kstarbound.util.random.random
@@ -62,6 +66,7 @@ import java.util.*
 import java.util.concurrent.CompletableFuture
 import java.util.concurrent.Future
 import java.util.random.RandomGenerator
+import kotlin.NoSuchElementException
 import kotlin.collections.ArrayList
 import kotlin.collections.HashMap
 
@@ -87,7 +92,6 @@ object Registries {
 	val jsonFunctions = Registry<JsonFunction>("json function").also(registriesInternal::add).also { adapters.add(it.adapter()) }
 	val json2Functions = Registry<Json2Function>("json 2function").also(registriesInternal::add).also { adapters.add(it.adapter()) }
 	val jsonConfigFunctions = Registry<JsonConfigFunction>("json config function").also(registriesInternal::add).also { adapters.add(it.adapter()) }
-	val npcTypes = Registry<NpcTypeDefinition>("npc type").also(registriesInternal::add).also { adapters.add(it.adapter()) }
 	val projectiles = Registry<ProjectileDefinition>("projectile").also(registriesInternal::add).also { adapters.add(it.adapter()) }
 	val tenants = Registry<TenantDefinition>("tenant").also(registriesInternal::add).also { adapters.add(it.adapter()) }
 	val treasurePools = Registry<TreasurePoolDefinition>("treasure pool").also(registriesInternal::add).also { adapters.add(it.adapter()) }
@@ -110,14 +114,14 @@ object Registries {
 	val damageKinds = Registry<DamageKind>("damage kind").also(registriesInternal::add).also { adapters.add(it.adapter()) }
 
 	private val monsterParts = HashMap<Pair<String, String>, HashMap<String, Pair<MonsterPartDefinition, IStarboundFile>>>()
-	private val loggedMisses = Collections.synchronizedSet(ObjectOpenHashSet<Pair<String, String>>())
+	private val loggedMonsterPartMisses = Collections.synchronizedSet(ObjectOpenHashSet<Pair<String, String>>())
 
 	fun selectMonsterPart(category: String, type: String, random: RandomGenerator): MonsterPartDefinition? {
 		val key = category to type
 		val get = monsterParts[key]
 
 		if (get.isNullOrEmpty()) {
-			if (loggedMisses.add(key)) {
+			if (loggedMonsterPartMisses.add(key)) {
 				LOGGER.error("No such monster part combination of category '$category' and type '$type'")
 			}
 
@@ -157,6 +161,49 @@ object Registries {
 		}
 	}
 
+	private val npcTypes = HashMap<String, Pair<IStarboundFile, JsonObject>>()
+
+	fun buildNPCConfig(type: String, overrides: JsonElement = JsonNull.INSTANCE): JsonObject {
+		val baseConfig = npcTypes.getOrElse(type) { throw NoSuchElementException("No such NPC type $type") }.second
+		val config = mergeJson(baseConfig.deepCopy(), overrides)
+
+		if ("baseType" in baseConfig) {
+			return buildNPCConfig(baseConfig["baseType"].asString, config)
+		} else {
+			return config
+		}
+	}
+
+	private fun loadNpcTypes(files: Collection<IStarboundFile>, patches: Map<String, Collection<IStarboundFile>>): List<Future<*>> {
+		return files.map { listedFile ->
+			Starbound.GLOBAL_SCOPE.launch {
+				try {
+					val elem = JsonPatch.applyAsync(listedFile.asyncJsonReader(), patches[listedFile.computeFullPath()]) as JsonObject
+					val type = elem.get("type").asString
+
+					if ("scripts" in elem) {
+						val fPath = listedFile.computeFullPath()
+						val scripts = elem["scripts"].asJsonArray
+
+						for (i in 0 until scripts.size()) {
+							scripts[i] = JsonPrimitive(AssetPathStack.relativeTo(fPath, scripts[i].asString))
+						}
+					}
+
+					Starbound.submit {
+						val existing = npcTypes.put(type, listedFile to elem)
+
+						if (existing != null) {
+							LOGGER.warn("Overwriting existing NPC definition '$type' (new originate from $listedFile, old originating from ${existing.first})")
+						}
+					}
+				} catch (err: Throwable) {
+					LOGGER.error("Loading NPC type definition file $listedFile", err)
+				}
+			}.asCompletableFuture()
+		}
+	}
+
 	private fun <T> key(mapper: (T) -> String): (T) -> Pair<String, KOptional<Int?>> {
 		return { mapper.invoke(it) to KOptional() }
 	}
@@ -236,7 +283,6 @@ object Registries {
 		tasks.addAll(loadRegistry(particles, patchTree, fileTree["particle"] ?: listOf(), { (it.kind ?: throw NullPointerException("Missing 'kind' value")) to KOptional() }))
 		tasks.addAll(loadRegistry(questTemplates, patchTree, fileTree["questtemplate"] ?: listOf(), key(QuestTemplate::id)))
 		tasks.addAll(loadRegistry(techs, patchTree, fileTree["tech"] ?: listOf(), key(TechDefinition::name)))
-		tasks.addAll(loadRegistry(npcTypes, patchTree, fileTree["npctype"] ?: listOf(), key(NpcTypeDefinition::type)))
 		tasks.addAll(loadRegistry(biomes, patchTree, fileTree["biome"] ?: listOf(), key(BiomeDefinition::name)))
 		tasks.addAll(loadRegistry(grassVariants, patchTree, fileTree["grass"] ?: listOf(), key(GrassVariant.Data::name)))
 		tasks.addAll(loadRegistry(treeStemVariants, patchTree, fileTree["modularstem"] ?: listOf(), key(TreeVariant.StemData::name)))
@@ -259,6 +305,8 @@ object Registries {
 		//  declaring game data
 		tasks.addAll(loadMixed(spawnTypes, fileTree["spawntypes"] ?: listOf(), patchTree, SpawnType::name))
 
+		tasks.addAll(loadNpcTypes(fileTree["npctype"] ?: listOf(), patchTree))
+
 		return tasks
 	}
 

src/main/kotlin/ru/dbotthepony/kstarbound/VersionRegistry.kt

@@ -51,6 +51,10 @@ object VersionRegistry {
 		return migrate(read, name)
 	}
 
+	fun load(reader: JsonElement): JsonElement {
+		return migrate(VersionedJson.fromJson(reader))
+	}
+
 	private val adapter by lazy { Starbound.gson.getAdapter(VersionedJson::class.java) }
 
 	fun load(): Future<*> {

src/main/kotlin/ru/dbotthepony/kstarbound/defs/PlayerWarping.kt

@@ -6,7 +6,7 @@ import com.google.gson.annotations.JsonAdapter
 import com.google.gson.stream.JsonReader
 import com.google.gson.stream.JsonWriter
 import kotlinx.coroutines.future.await
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.io.readUUID
 import ru.dbotthepony.kstarbound.io.readVector2d
 import ru.dbotthepony.kstarbound.io.readVector2f

src/main/kotlin/ru/dbotthepony/kstarbound/defs/actor/NPCVariant.kt

@@ -0,0 +1,44 @@
+package ru.dbotthepony.kstarbound.defs.actor
+
+import com.google.common.collect.ImmutableList
+import com.google.gson.JsonElement
+import com.google.gson.JsonNull
+import ru.dbotthepony.kstarbound.Registries
+import ru.dbotthepony.kstarbound.Registry
+import ru.dbotthepony.kstarbound.Starbound
+import ru.dbotthepony.kstarbound.defs.AssetPath
+import ru.dbotthepony.kstarbound.json.builder.JsonFactory
+import ru.dbotthepony.kstarbound.math.vector.Vector2d
+import ru.dbotthepony.kstarbound.util.random.nextRange
+import ru.dbotthepony.kstarbound.util.random.random
+import java.util.random.RandomGenerator
+import kotlin.math.max
+
+data class NPCVariant(
+	val species: Registry.Entry<Species>,
+	val scripts: ImmutableList<AssetPath>,
+	val initialScriptDelta: Int = 5,
+) {
+	@JsonFactory
+	data class SerializedData(
+		val levelVariance: Vector2d = Vector2d.ZERO,
+		val scripts: ImmutableList<AssetPath>,
+		val initialScriptDelta: Int = 5,
+		val scriptConfig: JsonElement = JsonNull.INSTANCE,
+		val humanoidConfig: String? = null,
+	)
+
+	companion object {
+		suspend fun create(species: Registry.Entry<Species>, type: String, level: Double, random: RandomGenerator, overrides: JsonElement = JsonNull.INSTANCE): NPCVariant {
+			val config = Registries.buildNPCConfig(type, overrides)
+
+			val serialized = Starbound.gson.fromJson(config, SerializedData::class.java)
+			val finalLevel = max(0.0, random.nextRange(serialized.levelVariance) + level)
+			TODO()
+		}
+
+		suspend fun create(species: Registry.Entry<Species>, type: String, level: Double, seed: Long, overrides: JsonElement = JsonNull.INSTANCE): NPCVariant {
+			return create(species, type, level, random(seed), overrides)
+		}
+	}
+}

src/main/kotlin/ru/dbotthepony/kstarbound/defs/actor/Species.kt

@@ -1,8 +1,11 @@
-package ru.dbotthepony.kstarbound.defs
+package ru.dbotthepony.kstarbound.defs.actor
 
 import com.google.common.collect.ImmutableList
 import com.google.common.collect.ImmutableSet
 import ru.dbotthepony.kstarbound.Registry
+import ru.dbotthepony.kstarbound.defs.AssetPath
+import ru.dbotthepony.kstarbound.defs.ColorReplacements
+import ru.dbotthepony.kstarbound.defs.StatusEffectDefinition
 import ru.dbotthepony.kstarbound.defs.image.SpriteReference
 import ru.dbotthepony.kstarbound.defs.actor.player.BlueprintLearnList
 import ru.dbotthepony.kstarbound.defs.item.ItemDescriptor
@@ -11,31 +14,36 @@ import ru.dbotthepony.kstarbound.json.builder.JsonFactory
 @JsonFactory
 data class Species(
 	val kind: String,
-	val charCreationTooltip: Tooltip,
+	val charCreationTooltip: Tooltip = Tooltip(),
 	val nameGen: ImmutableList<String>,
-	val ouchNoises: ImmutableList<String>,
-	val charGenTextLabels: ImmutableList<String>,
-	val skull: String,
+	val ouchNoises: ImmutableList<AssetPath>,
+	val charGenTextLabels: ImmutableList<String> = ImmutableList.of(),
+	val skull: AssetPath = AssetPath("/humanoid/any/dead.png"), // ваш свет угасает
 	val defaultBlueprints: BlueprintLearnList,
+
+	val headOptionAsHairColor: Boolean = false,
 	val headOptionAsFacialhair: Boolean = false,
 	val altOptionAsUndyColor: Boolean = false,
 	val altOptionAsHairColor: Boolean = false,
-	val bodyColorAsFacialMaskSubColor: Boolean = false,
+	val altOptionAsFacialMask: Boolean = false,
 	val hairColorAsBodySubColor: Boolean = false,
+	val bodyColorAsFacialMaskSubColor: Boolean = false,
+	val altColorAsFacialMaskSubColor: Boolean = false,
+
 	val bodyColor: ImmutableList<ColorReplacements>,
 	val undyColor: ImmutableList<ColorReplacements>,
 	val hairColor: ImmutableList<ColorReplacements>,
-	val genders: ImmutableList<Gender>,
+	val genders: ImmutableList<GenderSettings>,
 	val statusEffects: ImmutableSet<Registry.Ref<StatusEffectDefinition>> = ImmutableSet.of(),
 ) {
 	@JsonFactory
-	data class Tooltip(val title: String, val subTitle: String, val description: String)
+	data class Tooltip(val title: String = "", val subTitle: String = "", val description: String = "")
 
 	@JsonFactory
-	data class Gender(
-		val name: String,
-		val image: SpriteReference,
-		val characterImage: SpriteReference,
+	data class GenderSettings(
+		val name: String = "",
+		val image: SpriteReference = SpriteReference.NEVER,
+		val characterImage: SpriteReference = SpriteReference.NEVER,
 		val hairGroup: String? = null,
 		val hair: ImmutableSet<String>,
 		val shirt: ImmutableSet<ItemDescriptor>,

src/main/kotlin/ru/dbotthepony/kstarbound/defs/actor/TenantDefinition.kt

@@ -1,4 +1,4 @@
-package ru.dbotthepony.kstarbound.defs.npc
+package ru.dbotthepony.kstarbound.defs.actor
 
 import com.google.common.collect.ImmutableMap
 import it.unimi.dsi.fastutil.objects.Object2IntMap

src/main/kotlin/ru/dbotthepony/kstarbound/defs/actor/behavior/CompositeNodeType.kt

@@ -11,9 +11,8 @@ import ru.dbotthepony.kstarbound.world.entities.behavior.RandomizeNode
 import ru.dbotthepony.kstarbound.world.entities.behavior.SequenceNode
 
 enum class CompositeNodeType(override val jsonName: String, val factory: (Map<String, NodeParameter>, ImmutableList<AbstractBehaviorNode>) -> AbstractBehaviorNode) : IStringSerializable {
-	SEQUENCE("Sequence", { _, c -> SequenceNode(c) }),
-	// in original engine, selector and sequence nodes are identical code-wise
-	SELECTOR("Selector", { _, c -> SequenceNode(c) }),
+	SEQUENCE("Sequence", { _, c -> SequenceNode(c, isSelector = false) }),
+	SELECTOR("Selector", { _, c -> SequenceNode(c, isSelector = true) }),
 	PARALLEL("Parallel", { p, c -> ParallelNode(p, c) }),
 	DYNAMIC("Dynamic", { _, c -> DynamicNode(c) }),
 	RANDOMIZE("Randomize", { _, c -> RandomizeNode(c) });

src/main/kotlin/ru/dbotthepony/kstarbound/defs/actor/player/PlayerBusyState.kt

@@ -1,8 +1,8 @@
 package ru.dbotthepony.kstarbound.defs.actor.player
 
-import ru.dbotthepony.kommons.io.IntValueCodec
-import ru.dbotthepony.kommons.io.StreamCodec
-import ru.dbotthepony.kommons.io.map
+import ru.dbotthepony.kstarbound.io.IntValueCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.map
 import ru.dbotthepony.kstarbound.json.builder.IStringSerializable
 
 enum class PlayerBusyState(override val jsonName: String) : IStringSerializable {

src/main/kotlin/ru/dbotthepony/kstarbound/defs/actor/player/PlayerConfig.kt

@@ -10,7 +10,7 @@ import ru.dbotthepony.kstarbound.math.vector.Vector2d
 import ru.dbotthepony.kstarbound.Registry
 import ru.dbotthepony.kstarbound.defs.ActorMovementParameters
 import ru.dbotthepony.kstarbound.defs.AssetReference
-import ru.dbotthepony.kstarbound.defs.Species
+import ru.dbotthepony.kstarbound.defs.actor.Species
 import ru.dbotthepony.kstarbound.defs.actor.StatusControllerConfig
 import ru.dbotthepony.kstarbound.util.SBPattern
 import ru.dbotthepony.kstarbound.defs.animation.AnimationDefinition

src/main/kotlin/ru/dbotthepony/kstarbound/defs/actor/player/PlayerGamemode.kt

@@ -1,8 +1,8 @@
 package ru.dbotthepony.kstarbound.defs.actor.player
 
-import ru.dbotthepony.kommons.io.IntValueCodec
-import ru.dbotthepony.kommons.io.StreamCodec
-import ru.dbotthepony.kommons.io.map
+import ru.dbotthepony.kstarbound.io.IntValueCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.map
 import ru.dbotthepony.kstarbound.json.builder.IStringSerializable
 
 enum class PlayerGamemode(override val jsonName: String) : IStringSerializable {

src/main/kotlin/ru/dbotthepony/kstarbound/defs/item/ItemDescriptor.kt

@@ -20,7 +20,7 @@ import org.classdump.luna.runtime.ExecutionContext
 import ru.dbotthepony.kommons.gson.contains
 import ru.dbotthepony.kommons.gson.get
 import ru.dbotthepony.kommons.gson.value
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.io.readVarLong
 import ru.dbotthepony.kommons.io.writeBinaryString
 import ru.dbotthepony.kommons.io.writeVarLong

src/main/kotlin/ru/dbotthepony/kstarbound/defs/npc/NpcTypeDefinition.kt

@@ -1,9 +0,0 @@
-package ru.dbotthepony.kstarbound.defs.npc
-
-import ru.dbotthepony.kstarbound.json.builder.JsonFactory
-
-@JsonFactory
-data class NpcTypeDefinition(
-	val type: String,
-	val baseType: String? = null,
-)

src/main/kotlin/ru/dbotthepony/kstarbound/defs/world/Sky.kt

@@ -5,7 +5,7 @@ import com.google.gson.JsonObject
 import it.unimi.dsi.fastutil.ints.IntArrayList
 import ru.dbotthepony.kommons.gson.contains
 import ru.dbotthepony.kommons.gson.get
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.math.RGBAColor
 import ru.dbotthepony.kstarbound.math.vector.Vector2d
 import ru.dbotthepony.kstarbound.math.vector.Vector2i

src/main/kotlin/ru/dbotthepony/kstarbound/io/SQLSavepoint.kt

@@ -0,0 +1,44 @@
+package ru.dbotthepony.kstarbound.io
+
+import java.io.Closeable
+import java.sql.Connection
+import java.sql.PreparedStatement
+
+class SQLSavepoint(connection: Connection, name: String) : Closeable {
+	private val begin: PreparedStatement
+	private val finish: PreparedStatement
+	private val rollback: PreparedStatement
+
+	init {
+		check('"' !in name) { "Invalid identifier: $name" }
+
+		begin = connection.prepareStatement("""
+			SAVEPOINT "$name"
+		""".trimIndent())
+
+		finish = connection.prepareStatement("""
+			RELEASE SAVEPOINT "$name"
+		""".trimIndent())
+
+		rollback = connection. prepareStatement("""
+			ROLLBACK TO SAVEPOINT "$name"
+		""".trimIndent())
+	}
+
+	fun execute(block: () -> Unit) {
+		try {
+			begin.execute()
+			block.invoke()
+			finish.execute()
+		} catch (err: Throwable) {
+			rollback.execute()
+			throw err
+		}
+	}
+
+	override fun close() {
+		begin.close()
+		finish.close()
+		rollback.close()
+	}
+}

src/main/kotlin/ru/dbotthepony/kstarbound/io/SQLUtils.kt

@@ -1,24 +0,0 @@
-package ru.dbotthepony.kstarbound.io
-
-import java.sql.Connection
-import java.sql.PreparedStatement
-
-data class SavepointStatements(val begin: PreparedStatement, val commit: PreparedStatement, val rollback: PreparedStatement)
-
-fun Connection.createSavepoint(name: String): SavepointStatements {
-	check('"' !in name) { "Invalid identifier: $name" }
-
-	val begin = prepareStatement("""
-		SAVEPOINT "$name"
-	""".trimIndent())
-
-	val commit = prepareStatement("""
-		RELEASE SAVEPOINT "$name"
-	""".trimIndent())
-
-	val rollback = prepareStatement("""
-		ROLLBACK TO SAVEPOINT "$name"
-	""".trimIndent())
-
-	return SavepointStatements(begin, commit, rollback)
-}

src/main/kotlin/ru/dbotthepony/kstarbound/io/StreamCodec.kt

@@ -0,0 +1,338 @@
+package ru.dbotthepony.kstarbound.io
+
+import ru.dbotthepony.kommons.io.readBigDecimal
+import ru.dbotthepony.kommons.io.readBinaryString
+import ru.dbotthepony.kommons.io.readByteArray
+import ru.dbotthepony.kommons.io.readKOptional
+import ru.dbotthepony.kommons.io.readMap
+import ru.dbotthepony.kommons.io.readOptional
+import ru.dbotthepony.kommons.io.readSignedVarInt
+import ru.dbotthepony.kommons.io.readSignedVarLong
+import ru.dbotthepony.kommons.io.readVarInt
+import ru.dbotthepony.kommons.io.readVarLong
+import ru.dbotthepony.kommons.io.writeBigDecimal
+import ru.dbotthepony.kommons.io.writeBinaryString
+import ru.dbotthepony.kommons.io.writeByteArray
+import ru.dbotthepony.kommons.io.writeKOptional
+import ru.dbotthepony.kommons.io.writeMap
+import ru.dbotthepony.kommons.io.writeOptional
+import ru.dbotthepony.kommons.io.writeSignedVarInt
+import ru.dbotthepony.kommons.io.writeSignedVarLong
+import ru.dbotthepony.kommons.io.writeVarInt
+import ru.dbotthepony.kommons.io.writeVarLong
+import ru.dbotthepony.kommons.math.RGBAColor
+import ru.dbotthepony.kommons.util.KOptional
+import java.io.DataInputStream
+import java.io.DataOutputStream
+import java.util.*
+import kotlin.reflect.KClass
+
+/**
+ * Represents value which can be encoded onto or decoded from stream.
+ */
+interface StreamCodec<V> {
+	fun read(stream: DataInputStream): V
+	fun write(stream: DataOutputStream, value: V)
+
+	/**
+	 * Defensive copy
+	 */
+	fun copy(value: V): V
+
+	/**
+	 * Optional custom equality check
+	 */
+	fun compare(a: V, b: V): Boolean {
+		return a == b
+	}
+
+	class Impl<V>(
+		private val reader: (stream: DataInputStream) -> V,
+		private val writer: (stream: DataOutputStream, value: V) -> Unit,
+		private val copier: ((value: V) -> V) = { it },
+		private val comparator: ((a: V, b: V) -> Boolean) = { a, b -> a == b }
+	) : StreamCodec<V> {
+		constructor(
+			reader: (stream: DataInputStream) -> V,
+			payloadSize: Long,
+			writer: (stream: DataOutputStream, value: V) -> Unit,
+			copier: ((value: V) -> V) = { it },
+			comparator: ((a: V, b: V) -> Boolean) = { a, b -> a == b }
+		) : this({ stream -> reader.invoke(stream) }, writer, copier, comparator)
+
+		override fun read(stream: DataInputStream): V {
+			return reader.invoke(stream)
+		}
+
+		override fun write(stream: DataOutputStream, value: V) {
+			writer.invoke(stream, value)
+		}
+
+		override fun copy(value: V): V {
+			return copier.invoke(value)
+		}
+
+		override fun compare(a: V, b: V): Boolean {
+			return comparator.invoke(a, b)
+		}
+	}
+
+	class Nullable<V>(val parent: StreamCodec<V>) : StreamCodec<V?> {
+		override fun read(stream: DataInputStream): V? {
+			return if (stream.read() == 0) null else parent.read(stream)
+		}
+
+		override fun write(stream: DataOutputStream, value: V?) {
+			if (value === null)
+				stream.write(0)
+			else {
+				stream.write(1)
+				parent.write(stream, value)
+			}
+		}
+
+		override fun copy(value: V?): V? {
+			return if (value === null) null else parent.copy(value)
+		}
+
+		override fun compare(a: V?, b: V?): Boolean {
+			if (a === null && b === null) return true
+			if (a === null || b === null) return false
+			return parent.compare(a, b)
+		}
+	}
+
+	class Collection<E, C : MutableCollection<E>>(val elementCodec: StreamCodec<E>, val collectionFactory: (Int) -> C) : StreamCodec<C> {
+		override fun read(stream: DataInputStream): C {
+			val size = stream.readVarInt()
+
+			if (size <= 0) {
+				return collectionFactory.invoke(0)
+			}
+
+			val collection = collectionFactory.invoke(size)
+
+			for (i in 0 until size) {
+				collection.add(elementCodec.read(stream))
+			}
+
+			return collection
+		}
+
+		override fun write(stream: DataOutputStream, value: C) {
+			stream.writeVarInt(value.size)
+			value.forEach { elementCodec.write(stream, it) }
+		}
+
+		override fun copy(value: C): C {
+			val new = collectionFactory.invoke(value.size)
+			value.forEach { new.add(elementCodec.copy(it)) }
+			return new
+		}
+	}
+
+	class Map<K, V, C : MutableMap<K, V>>(val keyCodec: StreamCodec<K>, val valueCodec: StreamCodec<V>, val factory: (Int) -> C): StreamCodec<C> {
+		override fun read(stream: DataInputStream): C {
+			return stream.readMap(keyCodec::read, valueCodec::read, factory)
+		}
+
+		override fun write(stream: DataOutputStream, value: C) {
+			stream.writeMap(value, keyCodec::write, valueCodec::write)
+		}
+
+		override fun copy(value: C): C {
+			val new = factory.invoke(value.size)
+
+			for ((k, v) in value.entries) {
+				new[keyCodec.copy(k)] = valueCodec.copy(v)
+			}
+
+			return new
+		}
+	}
+
+	class Enum<V : kotlin.Enum<V>>(clazz: Class<out V>) : StreamCodec<V> {
+		val clazz = searchClass(clazz)
+		val values: List<V> = listOf(*this.clazz.enumConstants!!)
+		val valuesMap = values.associateBy { it.name }
+
+		override fun read(stream: DataInputStream): V {
+			val id = stream.readVarInt()
+			return values.getOrNull(id) ?: throw NoSuchElementException("No such enum with index $id")
+		}
+
+		override fun write(stream: DataOutputStream, value: V) {
+			stream.writeVarInt(value.ordinal)
+		}
+
+		override fun copy(value: V): V {
+			return value
+		}
+
+		override fun compare(a: V, b: V): Boolean {
+			return a === b
+		}
+
+		companion object {
+			/**
+			 * FIXME: enums with abstract methods which get compiled to subclasses, whose DO NOT expose "parent's" enum constants array
+			 *
+			 * is there an already existing solution?
+			 */
+			fun <V : kotlin.Enum<V>> searchClass(clazz: Class<out V>): Class<out V> {
+				var search: Class<*> = clazz
+
+				while (search.enumConstants == null && search.superclass != null) {
+					search = search.superclass
+				}
+
+				if (search.enumConstants == null) {
+					throw ClassCastException("$clazz does not represent an enum or enum subclass")
+				}
+
+				return search as Class<out V>
+			}
+		}
+	}
+
+	class KOptional<V>(val codec: StreamCodec<V>) : StreamCodec<ru.dbotthepony.kommons.util.KOptional<V>> {
+		override fun read(stream: DataInputStream): ru.dbotthepony.kommons.util.KOptional<V> {
+			return stream.readKOptional(codec::read)
+		}
+
+		override fun write(stream: DataOutputStream, value: ru.dbotthepony.kommons.util.KOptional<V>) {
+			stream.writeKOptional(value, codec::write)
+		}
+
+		override fun copy(value: ru.dbotthepony.kommons.util.KOptional<V>): ru.dbotthepony.kommons.util.KOptional<V> {
+			return value.map(codec::copy)
+		}
+	}
+
+	class Optional<V : Any>(val codec: StreamCodec<V>) : StreamCodec<java.util.Optional<V>> {
+		override fun read(stream: DataInputStream): java.util.Optional<V> {
+			return stream.readOptional(codec::read)
+		}
+
+		override fun write(stream: DataOutputStream, value: java.util.Optional<V>) {
+			stream.writeOptional(value, codec::write)
+		}
+
+		override fun copy(value: java.util.Optional<V>): java.util.Optional<V> {
+			return value.map(codec::copy)
+		}
+	}
+
+	class Mapping<T, R>(private val codec: StreamCodec<T>, private val from: T.() -> R, private val to: R.() -> T, private val copy: R.() -> R = { this }) : StreamCodec<R> {
+		override fun read(stream: DataInputStream): R {
+			return from(codec.read(stream))
+		}
+
+		override fun write(stream: DataOutputStream, value: R) {
+			codec.write(stream, to(value))
+		}
+
+		override fun copy(value: R): R {
+			return copy.invoke(value)
+		}
+	}
+
+	class Pair<L, R>(private val left: StreamCodec<L>, private val right: StreamCodec<R>) : StreamCodec<kotlin.Pair<L, R>> {
+		override fun read(stream: DataInputStream): kotlin.Pair<L, R> {
+			val left = left.read(stream)
+			val right = right.read(stream)
+			return left to right
+		}
+
+		override fun write(stream: DataOutputStream, value: kotlin.Pair<L, R>) {
+			left.write(stream, value.first)
+			right.write(stream, value.second)
+		}
+
+		override fun copy(value: kotlin.Pair<L, R>): kotlin.Pair<L, R> {
+			val left = left.copy(value.first)
+			val right = right.copy(value.second)
+
+			if (left !== this.left && right !== this.right) {
+				return left to right
+			} else {
+				return value
+			}
+		}
+	}
+}
+
+fun <T, R> StreamCodec<T>.map(from: T.() -> R, to: R.() -> T): StreamCodec<R> {
+	return StreamCodec.Mapping(this, from, to)
+}
+
+fun <T, R> StreamCodec<T>.map(from: T.() -> R, to: R.() -> T, copy: R.() -> R): StreamCodec<R> {
+	return StreamCodec.Mapping(this, from, to, copy)
+}
+
+fun <T : Any> StreamCodec<T>.optional(): StreamCodec<Optional<T>> = StreamCodec.Optional(this)
+fun <T> StreamCodec<T>.koptional(): StreamCodec<KOptional<T>> = StreamCodec.KOptional(this)
+fun <T> StreamCodec<T>.nullable(): StreamCodec<T?> = StreamCodec.Nullable(this)
+
+val NullValueCodec = StreamCodec.Impl({ _ -> null }, { _, _ -> })
+val BooleanValueCodec = StreamCodec.Impl(DataInputStream::readBoolean, 1L, DataOutputStream::writeBoolean)
+val ByteValueCodec = StreamCodec.Impl(DataInputStream::readByte, 1L, { s, v -> s.writeByte(v.toInt()) })
+val ShortValueCodec = StreamCodec.Impl(DataInputStream::readShort, 2L, { s, v -> s.writeShort(v.toInt()) })
+val CharValueCodec = StreamCodec.Impl(DataInputStream::readChar, 2L, { s, v -> s.writeShort(v.code) })
+val IntValueCodec = StreamCodec.Impl(DataInputStream::readInt, 4L, DataOutputStream::writeInt)
+val LongValueCodec = StreamCodec.Impl(DataInputStream::readLong, 8L, DataOutputStream::writeLong)
+val FloatValueCodec = StreamCodec.Impl(DataInputStream::readFloat, 4L, DataOutputStream::writeFloat)
+val DoubleValueCodec = StreamCodec.Impl(DataInputStream::readDouble, 8L, DataOutputStream::writeDouble)
+val BigDecimalValueCodec = StreamCodec.Impl(DataInputStream::readBigDecimal, DataOutputStream::writeBigDecimal)
+val UUIDValueCodec = StreamCodec.Impl({ s -> UUID(s.readLong(), s.readLong()) }, { s, v -> s.writeLong(v.mostSignificantBits); s.writeLong(v.leastSignificantBits) })
+val VarIntValueCodec = StreamCodec.Impl(DataInputStream::readSignedVarInt, DataOutputStream::writeSignedVarInt)
+val VarLongValueCodec = StreamCodec.Impl(DataInputStream::readSignedVarLong, DataOutputStream::writeSignedVarLong)
+val BinaryStringCodec = StreamCodec.Impl(DataInputStream::readBinaryString, DataOutputStream::writeBinaryString)
+
+val UnsignedVarLongCodec = StreamCodec.Impl(DataInputStream::readVarLong, DataOutputStream::writeVarLong)
+val UnsignedVarIntCodec = StreamCodec.Impl(DataInputStream::readVarInt, DataOutputStream::writeVarInt)
+
+val ByteArrayCodec = StreamCodec.Impl(DataInputStream::readByteArray, DataOutputStream::writeByteArray)
+
+val RGBCodec = StreamCodec.Impl(
+	{ s -> RGBAColor(s.readFloat(), s.readFloat(), s.readFloat()) },
+	{ s, v -> s.writeFloat(v.red); s.writeFloat(v.green); s.writeFloat(v.blue) })
+
+val RGBACodec = StreamCodec.Impl(
+	{ s -> RGBAColor(s.readFloat(), s.readFloat(), s.readFloat(), s.readFloat()) },
+	{ s, v -> s.writeFloat(v.red); s.writeFloat(v.green); s.writeFloat(v.blue); s.writeFloat(v.alpha) })
+
+val OptionalBooleanValueCodec = StreamCodec.Optional(BooleanValueCodec)
+val OptionalByteValueCodec = StreamCodec.Optional(ByteValueCodec)
+val OptionalShortValueCodec = StreamCodec.Optional(ShortValueCodec)
+val OptionalCharValueCodec = StreamCodec.Optional(CharValueCodec)
+val OptionalIntValueCodec = StreamCodec.Optional(IntValueCodec)
+val OptionalLongValueCodec = StreamCodec.Optional(LongValueCodec)
+val OptionalFloatValueCodec = StreamCodec.Optional(FloatValueCodec)
+val OptionalDoubleValueCodec = StreamCodec.Optional(DoubleValueCodec)
+val OptionalBigDecimalValueCodec = StreamCodec.Optional(BigDecimalValueCodec)
+val OptionalUUIDValueCodec = StreamCodec.Optional(UUIDValueCodec)
+val OptionalVarIntValueCodec = StreamCodec.Optional(VarIntValueCodec)
+val OptionalVarLongValueCodec = StreamCodec.Optional(VarLongValueCodec)
+val OptionalBinaryStringCodec = StreamCodec.Optional(BinaryStringCodec)
+val OptionalRGBCodec = StreamCodec.Optional(RGBCodec)
+val OptionalRGBACodec = StreamCodec.Optional(RGBACodec)
+
+val KOptionalBooleanValueCodec = StreamCodec.KOptional(BooleanValueCodec)
+val KOptionalByteValueCodec = StreamCodec.KOptional(ByteValueCodec)
+val KOptionalShortValueCodec = StreamCodec.KOptional(ShortValueCodec)
+val KOptionalCharValueCodec = StreamCodec.KOptional(CharValueCodec)
+val KOptionalIntValueCodec = StreamCodec.KOptional(IntValueCodec)
+val KOptionalLongValueCodec = StreamCodec.KOptional(LongValueCodec)
+val KOptionalFloatValueCodec = StreamCodec.KOptional(FloatValueCodec)
+val KOptionalDoubleValueCodec = StreamCodec.KOptional(DoubleValueCodec)
+val KOptionalBigDecimalValueCodec = StreamCodec.KOptional(BigDecimalValueCodec)
+val KOptionalUUIDValueCodec = StreamCodec.KOptional(UUIDValueCodec)
+val KOptionalVarIntValueCodec = StreamCodec.KOptional(VarIntValueCodec)
+val KOptionalVarLongValueCodec = StreamCodec.KOptional(VarLongValueCodec)
+val KOptionalBinaryStringCodec = StreamCodec.KOptional(BinaryStringCodec)
+val KOptionalRGBCodec = StreamCodec.KOptional(RGBCodec)
+val KOptionalRGBACodec = StreamCodec.KOptional(RGBACodec)
+
+fun <E : Enum<E>> Class<E>.codec() = StreamCodec.Enum(this)
+fun <E : Enum<E>> KClass<E>.codec() = StreamCodec.Enum(this.java)

src/main/kotlin/ru/dbotthepony/kstarbound/io/Streams.kt

@@ -2,8 +2,6 @@ package ru.dbotthepony.kstarbound.io
 
 import it.unimi.dsi.fastutil.bytes.ByteArrayList
 import it.unimi.dsi.fastutil.io.FastByteArrayOutputStream
-import ru.dbotthepony.kommons.io.DelegateSyncher
-import ru.dbotthepony.kommons.io.StreamCodec
 import ru.dbotthepony.kommons.io.readBinaryString
 import ru.dbotthepony.kommons.io.readDouble
 import ru.dbotthepony.kommons.io.readFloat
@@ -263,27 +261,6 @@ val Vector4iCodec = StreamCodec.Impl(DataInputStream::readVector4i, DataOutputSt
 val Vector4dCodec = StreamCodec.Impl(DataInputStream::readVector4d, DataOutputStream::writeStruct4d)
 val Vector4fCodec = StreamCodec.Impl(DataInputStream::readVector4f, DataOutputStream::writeStruct4f)
 
-fun DelegateSyncher.vec2i(value: Vector2i, setter: DelegateSetter<Vector2i> = DelegateSetter.passthrough(), getter: DelegateGetter<Vector2i> = DelegateGetter.passthrough()) = Slot(
-	ListenableDelegate.maskSmart(value, getter, setter), Vector2iCodec)
-fun DelegateSyncher.vec2d(value: Vector2d, setter: DelegateSetter<Vector2d> = DelegateSetter.passthrough(), getter: DelegateGetter<Vector2d> = DelegateGetter.passthrough()) = Slot(
-	ListenableDelegate.maskSmart(value, getter, setter), Vector2dCodec)
-fun DelegateSyncher.vec2f(value: Vector2f, setter: DelegateSetter<Vector2f> = DelegateSetter.passthrough(), getter: DelegateGetter<Vector2f> = DelegateGetter.passthrough()) = Slot(
-	ListenableDelegate.maskSmart(value, getter, setter), Vector2fCodec)
-
-fun DelegateSyncher.vec3i(value: Vector3i, setter: DelegateSetter<Vector3i> = DelegateSetter.passthrough(), getter: DelegateGetter<Vector3i> = DelegateGetter.passthrough()) = Slot(
-	ListenableDelegate.maskSmart(value, getter, setter), Vector3iCodec)
-fun DelegateSyncher.vec3d(value: Vector3d, setter: DelegateSetter<Vector3d> = DelegateSetter.passthrough(), getter: DelegateGetter<Vector3d> = DelegateGetter.passthrough()) = Slot(
-	ListenableDelegate.maskSmart(value, getter, setter), Vector3dCodec)
-fun DelegateSyncher.vec3f(value: Vector3f, setter: DelegateSetter<Vector3f> = DelegateSetter.passthrough(), getter: DelegateGetter<Vector3f> = DelegateGetter.passthrough()) = Slot(
-	ListenableDelegate.maskSmart(value, getter, setter), Vector3fCodec)
-
-fun DelegateSyncher.vec4i(value: Vector4i, setter: DelegateSetter<Vector4i> = DelegateSetter.passthrough(), getter: DelegateGetter<Vector4i> = DelegateGetter.passthrough()) = Slot(
-	ListenableDelegate.maskSmart(value, getter, setter), Vector4iCodec)
-fun DelegateSyncher.vec4d(value: Vector4d, setter: DelegateSetter<Vector4d> = DelegateSetter.passthrough(), getter: DelegateGetter<Vector4d> = DelegateGetter.passthrough()) = Slot(
-	ListenableDelegate.maskSmart(value, getter, setter), Vector4dCodec)
-fun DelegateSyncher.vec4f(value: Vector4f, setter: DelegateSetter<Vector4f> = DelegateSetter.passthrough(), getter: DelegateGetter<Vector4f> = DelegateGetter.passthrough()) = Slot(
-	ListenableDelegate.maskSmart(value, getter, setter), Vector4fCodec)
-
 fun OutputStream.writeEnumStupid(index: Int, isLegacy: Boolean) {
 	if (isLegacy) writeInt(index) else write(index)
 }

src/main/kotlin/ru/dbotthepony/kstarbound/item/ActiveItemStack.kt

@@ -2,7 +2,7 @@ package ru.dbotthepony.kstarbound.item
 
 import com.google.gson.JsonNull
 import com.google.gson.JsonObject
-import ru.dbotthepony.kommons.io.koptional
+import ru.dbotthepony.kstarbound.io.koptional
 import ru.dbotthepony.kommons.util.KOptional
 import ru.dbotthepony.kommons.util.getValue
 import ru.dbotthepony.kommons.util.setValue

src/main/kotlin/ru/dbotthepony/kstarbound/json/VersionedJson.kt

@@ -40,5 +40,9 @@ data class VersionedJson(val id: String, val version: Int?, val content: JsonEle
 
 	companion object {
 		private val adapter by lazy { Starbound.gson.getAdapter<VersionedJson>() }
+
+		fun fromJson(data: JsonElement): VersionedJson {
+			return adapter.fromJsonTree(data)
+		}
 	}
 }

src/main/kotlin/ru/dbotthepony/kstarbound/lua/bindings/RootBindings.kt

@@ -461,7 +461,7 @@ fun provideRootBindings(lua: LuaEnvironment) {
 	table["imageSize"] = imageSize
 	table["imageSpaces"] = luaFunctionNS("imageSpaces", ::imageSpaces)
 	table["nonEmptyRegion"] = luaFunction(::nonEmptyRegion)
-	table["npcConfig"] = registryDef(Registries.npcTypes)
+	//table["npcConfig"] = registryDef(Registries.npcTypes)
 
 	table["npcVariant"] = luaStub("npcVariant")
 	table["projectileGravityMultiplier"] = luaStub("projectileGravityMultiplier")

src/main/kotlin/ru/dbotthepony/kstarbound/network/Connection.kt

@@ -13,9 +13,9 @@ import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.asCoroutineDispatcher
 import kotlinx.coroutines.cancel
 import org.apache.logging.log4j.LogManager
-import ru.dbotthepony.kommons.io.IntValueCodec
-import ru.dbotthepony.kommons.io.StreamCodec
-import ru.dbotthepony.kommons.io.koptional
+import ru.dbotthepony.kstarbound.io.IntValueCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.koptional
 import ru.dbotthepony.kstarbound.math.AABBi
 import ru.dbotthepony.kommons.util.KOptional
 import ru.dbotthepony.kommons.util.getValue

src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/BasicNetworkedElement.kt

@@ -1,6 +1,6 @@
 package ru.dbotthepony.kstarbound.network.syncher
 
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.util.Listenable
 import ru.dbotthepony.kommons.util.ListenableDelegate
 import java.io.DataInputStream

src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/EventCounterElement.kt

@@ -1,6 +1,6 @@
 package ru.dbotthepony.kstarbound.network.syncher
 
-import ru.dbotthepony.kommons.io.UnsignedVarLongCodec
+import ru.dbotthepony.kstarbound.io.UnsignedVarLongCodec
 import java.io.DataInputStream
 import java.util.function.Consumer
 

src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/Factories.kt

@@ -4,34 +4,25 @@ import com.google.gson.JsonElement
 import com.google.gson.JsonNull
 import com.google.gson.JsonObject
 import com.google.gson.TypeAdapter
-import ru.dbotthepony.kommons.io.BinaryStringCodec
-import ru.dbotthepony.kommons.io.BooleanValueCodec
-import ru.dbotthepony.kommons.io.IntValueCodec
-import ru.dbotthepony.kommons.io.RGBACodec
-import ru.dbotthepony.kommons.io.StreamCodec
-import ru.dbotthepony.kommons.io.UnsignedVarIntCodec
-import ru.dbotthepony.kommons.io.UnsignedVarLongCodec
-import ru.dbotthepony.kommons.io.VarIntValueCodec
-import ru.dbotthepony.kommons.io.VarLongValueCodec
-import ru.dbotthepony.kommons.io.koptional
-import ru.dbotthepony.kommons.io.map
 import ru.dbotthepony.kommons.io.readByteArray
-import ru.dbotthepony.kommons.io.readVarInt
 import ru.dbotthepony.kommons.io.readVarLong
 import ru.dbotthepony.kommons.io.writeBinaryString
 import ru.dbotthepony.kommons.io.writeByteArray
-import ru.dbotthepony.kommons.io.writeShort
-import ru.dbotthepony.kommons.io.writeVarInt
 import ru.dbotthepony.kommons.io.writeVarLong
 import ru.dbotthepony.kommons.math.RGBAColor
-import ru.dbotthepony.kstarbound.math.AABB
 import ru.dbotthepony.kommons.util.KOptional
-import ru.dbotthepony.kstarbound.math.vector.Vector2d
 import ru.dbotthepony.kstarbound.Starbound
-import ru.dbotthepony.kstarbound.defs.item.ItemDescriptor
-import ru.dbotthepony.kstarbound.defs.world.SkyType
+import ru.dbotthepony.kstarbound.io.IntValueCodec
+import ru.dbotthepony.kstarbound.io.RGBACodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.UnsignedVarIntCodec
+import ru.dbotthepony.kstarbound.io.UnsignedVarLongCodec
+import ru.dbotthepony.kstarbound.io.VarIntValueCodec
+import ru.dbotthepony.kstarbound.io.VarLongValueCodec
 import ru.dbotthepony.kstarbound.io.Vector2dCodec
 import ru.dbotthepony.kstarbound.io.Vector2fCodec
+import ru.dbotthepony.kstarbound.io.koptional
+import ru.dbotthepony.kstarbound.io.map
 import ru.dbotthepony.kstarbound.io.readAABB
 import ru.dbotthepony.kstarbound.io.readAABBLegacy
 import ru.dbotthepony.kstarbound.io.readAABBLegacyOptional
@@ -45,6 +36,8 @@ import ru.dbotthepony.kstarbound.json.readJsonElement
 import ru.dbotthepony.kstarbound.json.readJsonObject
 import ru.dbotthepony.kstarbound.json.writeJsonElement
 import ru.dbotthepony.kstarbound.json.writeJsonObject
+import ru.dbotthepony.kstarbound.math.AABB
+import ru.dbotthepony.kstarbound.math.vector.Vector2d
 import ru.dbotthepony.kstarbound.world.physics.Poly
 import java.io.DataInputStream
 import java.io.DataOutputStream

src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/JsonCodec.kt

@@ -3,7 +3,7 @@ package ru.dbotthepony.kstarbound.network.syncher
 import com.google.gson.TypeAdapter
 import it.unimi.dsi.fastutil.io.FastByteArrayInputStream
 import it.unimi.dsi.fastutil.io.FastByteArrayOutputStream
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.io.readByteArray
 import ru.dbotthepony.kommons.io.writeByteArray
 import ru.dbotthepony.kstarbound.json.BinaryJsonReader

src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/NetworkedList.kt

@@ -2,7 +2,7 @@ package ru.dbotthepony.kstarbound.network.syncher
 
 import it.unimi.dsi.fastutil.io.FastByteArrayInputStream
 import it.unimi.dsi.fastutil.io.FastByteArrayOutputStream
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.io.readByteArray
 import ru.dbotthepony.kommons.io.readVarInt
 import ru.dbotthepony.kommons.io.writeVarInt

src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/NetworkedMap.kt

@@ -1,7 +1,7 @@
 package ru.dbotthepony.kstarbound.network.syncher
 
 import ru.dbotthepony.kommons.collect.ListenableMap
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.io.readVarInt
 import ru.dbotthepony.kommons.io.writeVarInt
 import ru.dbotthepony.kommons.util.KOptional

src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/NetworkedSignal.kt

@@ -1,6 +1,6 @@
 package ru.dbotthepony.kstarbound.network.syncher
 
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.io.readVarInt
 import ru.dbotthepony.kommons.io.writeVarInt
 import ru.dbotthepony.kommons.util.KOptional

src/main/kotlin/ru/dbotthepony/kstarbound/server/world/NativeLocalWorldStorage.kt

@@ -1,5 +1,6 @@
 package ru.dbotthepony.kstarbound.server.world
 
+import com.google.gson.JsonArray
 import com.google.gson.JsonObject
 import it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap
 import it.unimi.dsi.fastutil.io.FastByteArrayInputStream
@@ -15,12 +16,13 @@ import ru.dbotthepony.kommons.io.writeCollection
 import ru.dbotthepony.kstarbound.Starbound
 import ru.dbotthepony.kstarbound.VersionRegistry
 import ru.dbotthepony.kstarbound.defs.EntityType
-import ru.dbotthepony.kstarbound.io.createSavepoint
+import ru.dbotthepony.kstarbound.io.SQLSavepoint
 import ru.dbotthepony.kstarbound.json.VersionedJson
+import ru.dbotthepony.kstarbound.json.readJsonArrayInflated
 import ru.dbotthepony.kstarbound.json.readJsonElement
 import ru.dbotthepony.kstarbound.json.readJsonObjectInflated
+import ru.dbotthepony.kstarbound.json.writeJsonArrayDeflated
 import ru.dbotthepony.kstarbound.json.writeJsonElement
-import ru.dbotthepony.kstarbound.json.writeJsonObjectDeflated
 import ru.dbotthepony.kstarbound.math.vector.Vector2d
 import ru.dbotthepony.kstarbound.math.vector.Vector2i
 import ru.dbotthepony.kstarbound.util.CarriedExecutor
@@ -39,7 +41,6 @@ import java.io.File
 import java.lang.ref.Cleaner
 import java.sql.Connection
 import java.sql.DriverManager
-import java.sql.PreparedStatement
 import java.util.concurrent.CompletableFuture
 import java.util.concurrent.TimeUnit
 import java.util.zip.Deflater
@@ -96,28 +97,26 @@ class NativeLocalWorldStorage(file: File?) : WorldStorage() {
 
 			it.execute("""
 				CREATE TABLE IF NOT EXISTS "entities" (
+					"x" INTEGER NOT NULL,
+					"y" INTEGER NOT NULL,
+					"data" BLOB NOT NULL,
+					PRIMARY KEY ("x", "y")
+				)
+			""".trimIndent())
+
+			it.execute("""
+				CREATE TABLE IF NOT EXISTS "unique_entities" (
+					"unique_id" BLOB NOT NULL PRIMARY KEY,
 					-- store chunks because rules for entities belonging to specific chunk might get different over time
 					"chunkX" INTEGER NOT NULL,
 					"chunkY" INTEGER NOT NULL,
 					"x" REAL NOT NULL,
-					"y" REAL NOT NULL,
-					"unique_id" VARCHAR,
-					"type" VARCHAR NOT NULL,
-					"version" INTEGER NOT NULL,
-					"data" BLOB NOT NULL
+					"y" REAL NOT NULL
 				)
 			""".trimIndent())
 
-			// Enforce unique-ness of unique entity IDs
-			// If another entity pops-up with same unique id, then it will overwrite entity in other chunk
-			// (unless colliding entities are both loaded into world's memory, which will cause runtime exception to be thrown;
-			// and no overwrite will happen)
 			it.execute("""
-				CREATE UNIQUE INDEX IF NOT EXISTS "entities_unique_id" ON "entities" ("unique_id")
-			""".trimIndent())
-
-			it.execute("""
-				CREATE INDEX IF NOT EXISTS "entities_chunk_pos" ON "entities" ("chunkX", "chunkY")
+				CREATE INDEX IF NOT EXISTS "entities_chunk_pos" ON "unique_entities" ("chunkX", "chunkY")
 			""".trimIndent())
 		}
 
@@ -167,7 +166,7 @@ class NativeLocalWorldStorage(file: File?) : WorldStorage() {
 	}
 
 	private val readEntities = connection.prepareStatement("""
-		SELECT "type", "version", "data" FROM "entities" WHERE "chunkX" = ? AND "chunkY" = ?
+		SELECT "data" FROM "entities" WHERE "x" = ? AND "y" = ?
 	""".trimIndent())
 
 	override fun loadEntities(pos: ChunkPos): CompletableFuture<Collection<AbstractEntity>> {
@@ -178,20 +177,22 @@ class NativeLocalWorldStorage(file: File?) : WorldStorage() {
 			val entities = ArrayList<AbstractEntity>()
 
 			readEntities.executeQuery().use {
-				while (it.next()) {
-					val rtype = it.getString(1)
-					val version = it.getInt(2)
-					val type = EntityType.entries.firstOrNull { it.storeName == rtype }
+				if (it.next()) {
+					val data = it.getBytes(1).readJsonArrayInflated()
 
-					if (type != null) {
-						try {
-							val data = it.getBytes(3).readJsonObjectInflated()
-							entities.add(type.fromStorage(VersionRegistry.migrate(VersionedJson(rtype, version, data)) as JsonObject))
-						} catch (err: Throwable) {
-							LOGGER.error("Unable to deserialize entity in chunk $pos", err)
+					for (entry in data) {
+						val versioned = VersionedJson.fromJson(entry)
+						val type = EntityType.entries.firstOrNull { it.storeName == versioned.id }
+
+						if (type != null) {
+							try {
+								entities.add(type.fromStorage(VersionRegistry.migrate(versioned) as JsonObject))
+							} catch (err: Throwable) {
+								LOGGER.error("Unable to deserialize entity in chunk $pos", err)
+							}
+						} else {
+							LOGGER.error("Unknown entity type ${versioned.id} in chunk $pos")
 						}
-					} else {
-						LOGGER.error("Unknown entity type $rtype in chunk $pos")
 					}
 				}
 			}
@@ -240,57 +241,53 @@ class NativeLocalWorldStorage(file: File?) : WorldStorage() {
 		}
 	}
 
-	private val clearEntities = connection.prepareStatement("""
-		DELETE FROM "entities" WHERE "chunkX" = ? AND "chunkY" = ?
+	private val clearUniqueEntities = connection.prepareStatement("""
+		DELETE FROM "unique_entities" WHERE "chunkX" = ? AND "chunkY" = ?
 	""".trimIndent())
 
-	private val beginSaveEntities: PreparedStatement
-	private val finishSaveEntities: PreparedStatement
-	private val rollbackSaveEntities: PreparedStatement
+	private val entitiesSavepoint = SQLSavepoint(connection, "save_entities")
 
-	init {
-		val (begin, commit, rollback) = connection.createSavepoint("save_entities")
-		beginSaveEntities = begin
-		finishSaveEntities = commit
-		rollbackSaveEntities = rollback
-	}
+	private val writeEntities = connection.prepareStatement("""
+		REPLACE INTO "entities" ("x", "y", "data")
+			VALUES (?, ?, ?)
+	""".trimIndent())
 
-	private val writeEntity = connection.prepareStatement("""
-		REPLACE INTO "entities" ("chunkX", "chunkY", "x", "y", "unique_id", "type", "version", "data")
-			VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+	private val writeUniqueEntity = connection.prepareStatement("""
+		REPLACE INTO "unique_entities" ("unique_id", "chunkX", "chunkY", "x", "y")
+			VALUES (?, ?, ?, ?, ?)
 	""".trimIndent())
 
 	override fun saveEntities(pos: ChunkPos, entities: Collection<AbstractEntity>) {
 		executor.execute {
-			beginSaveEntities.execute()
+			entitiesSavepoint.execute {
+				clearUniqueEntities.setInt(1, pos.x)
+				clearUniqueEntities.setInt(2, pos.y)
+				clearUniqueEntities.execute()
 
-			try {
-				clearEntities.setInt(1, pos.x)
-				clearEntities.setInt(2, pos.y)
-				clearEntities.execute()
+				val storeData = JsonArray()
 
 				for (entity in entities) {
 					Starbound.storeJson {
 						val data = JsonObject()
 						entity.serialize(data)
+						storeData.add(VersionRegistry.make(entity.type.storeName, data).toJson())
 
-						writeEntity.setInt(1, pos.x)
-						writeEntity.setInt(2, pos.y)
-						writeEntity.setDouble(3, entity.position.x)
-						writeEntity.setDouble(4, entity.position.y)
-						writeEntity.setString(5, entity.uniqueID.get())
-						writeEntity.setString(6, entity.type.storeName)
-						writeEntity.setInt(7, VersionRegistry.currentVersion(entity.type.storeName))
-						writeEntity.setBytes(8, data.writeJsonObjectDeflated())
+						if (entity.uniqueID.get() != null) {
+							writeUniqueEntity.setString(1, entity.uniqueID.get())
+							writeUniqueEntity.setInt(2, pos.x)
+							writeUniqueEntity.setInt(3, pos.y)
+							writeUniqueEntity.setDouble(4, entity.position.x)
+							writeUniqueEntity.setDouble(5, entity.position.y)
 
-						writeEntity.execute()
+							writeUniqueEntity.execute()
+						}
 					}
 				}
 
-				finishSaveEntities.execute()
-			} catch (err: Throwable) {
-				rollbackSaveEntities.execute()
-				throw err
+				writeEntities.setInt(1, pos.x)
+				writeEntities.setInt(2, pos.y)
+				writeEntities.setBytes(3, storeData.writeJsonArrayDeflated())
+				writeEntities.execute()
 			}
 		}
 	}
@@ -430,7 +427,7 @@ class NativeLocalWorldStorage(file: File?) : WorldStorage() {
 	}
 
 	private val findUniqueEntity = connection.prepareStatement("""
-		SELECT "chunkX", "chunkY", "x", "y" FROM "entities" WHERE "unique_id" = ?
+		SELECT "chunkX", "chunkY", "x", "y" FROM "unique_entities" WHERE "unique_id" = ?
 	""".trimIndent())
 
 	override fun findUniqueEntity(identifier: String): CompletableFuture<UniqueEntitySearchResult?> {

src/main/kotlin/ru/dbotthepony/kstarbound/util/AssetPathStack.kt

@@ -58,6 +58,6 @@ object AssetPathStack {
 		if (path.isNotEmpty() && path[0] == '/')
 			return path
 
-		return if (base.endsWith('/')) "$base$path" else "$base/$path"
+		return if (base.endsWith('/')) "$base$path".sbIntern() else "$base/$path".sbIntern()
 	}
 }

src/main/kotlin/ru/dbotthepony/kstarbound/util/Utils.kt

@@ -1,7 +1,7 @@
 package ru.dbotthepony.kstarbound.util
 
 import com.google.gson.JsonElement
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kstarbound.Starbound
 import ru.dbotthepony.kstarbound.json.builder.IStringSerializable
 import java.util.*

src/main/kotlin/ru/dbotthepony/kstarbound/util/random/RandomUtils.kt

@@ -5,6 +5,7 @@ import com.google.gson.JsonElement
 import it.unimi.dsi.fastutil.bytes.ByteConsumer
 import org.classdump.luna.ByteString
 import ru.dbotthepony.kommons.util.IStruct2d
+import ru.dbotthepony.kommons.util.IStruct2f
 import ru.dbotthepony.kommons.util.IStruct2i
 import ru.dbotthepony.kommons.util.XXHash32
 import ru.dbotthepony.kommons.util.XXHash64
@@ -263,6 +264,10 @@ fun RandomGenerator.nextRange(range: IStruct2d): Double {
 	return if (range.component1() == range.component2()) return range.component1() else nextDouble(range.component1(), range.component2())
 }
 
+fun RandomGenerator.nextRange(range: IStruct2f): Float {
+	return if (range.component1() == range.component2()) return range.component1() else nextFloat(range.component1(), range.component2())
+}
+
 fun <T> MutableList<T>.shuffle(random: RandomGenerator) {
 	for (i in 0 until size) {
 		val rand = random.nextInt(size)

src/main/kotlin/ru/dbotthepony/kstarbound/world/Direction.kt

@@ -1,6 +1,6 @@
 package ru.dbotthepony.kstarbound.world
 
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kstarbound.math.vector.Vector2d
 import ru.dbotthepony.kstarbound.json.builder.IStringSerializable
 

src/main/kotlin/ru/dbotthepony/kstarbound/world/RayDirection.kt

@@ -1,6 +1,6 @@
 package ru.dbotthepony.kstarbound.world
 
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kstarbound.math.vector.Vector2d
 import ru.dbotthepony.kstarbound.json.builder.IStringSerializable
 

src/main/kotlin/ru/dbotthepony/kstarbound/world/Sky.kt

@@ -1,7 +1,6 @@
 package ru.dbotthepony.kstarbound.world
 
-import ru.dbotthepony.kommons.io.VarIntValueCodec
-import ru.dbotthepony.kommons.io.map
+import ru.dbotthepony.kstarbound.io.map
 import ru.dbotthepony.kommons.math.linearInterpolation
 import ru.dbotthepony.kommons.util.getValue
 import ru.dbotthepony.kommons.util.setValue
@@ -12,6 +11,7 @@ import ru.dbotthepony.kstarbound.defs.world.SkyGlobalConfig
 import ru.dbotthepony.kstarbound.defs.world.SkyParameters
 import ru.dbotthepony.kstarbound.defs.world.SkyType
 import ru.dbotthepony.kstarbound.defs.world.WarpPhase
+import ru.dbotthepony.kstarbound.io.VarIntValueCodec
 import ru.dbotthepony.kstarbound.network.syncher.MasterElement
 import ru.dbotthepony.kstarbound.network.syncher.NetworkedGroup
 import ru.dbotthepony.kstarbound.network.syncher.networkedBoolean

src/main/kotlin/ru/dbotthepony/kstarbound/world/SystemWorld.kt

@@ -1,7 +1,7 @@
 package ru.dbotthepony.kstarbound.world
 
 import com.google.gson.JsonObject
-import ru.dbotthepony.kommons.io.koptional
+import ru.dbotthepony.kstarbound.io.koptional
 import ru.dbotthepony.kommons.util.KOptional
 import ru.dbotthepony.kommons.util.getValue
 import ru.dbotthepony.kommons.util.setValue

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/AbstractEntity.kt

@@ -7,7 +7,6 @@ import it.unimi.dsi.fastutil.bytes.ByteArrayList
 import it.unimi.dsi.fastutil.io.FastByteArrayOutputStream
 import it.unimi.dsi.fastutil.objects.ObjectArrayList
 import org.apache.logging.log4j.LogManager
-import ru.dbotthepony.kommons.io.nullable
 import ru.dbotthepony.kommons.util.Either
 import ru.dbotthepony.kstarbound.Starbound
 import ru.dbotthepony.kstarbound.client.StarboundClient
@@ -20,6 +19,7 @@ import ru.dbotthepony.kstarbound.defs.DamageType
 import ru.dbotthepony.kstarbound.defs.EntityDamageTeam
 import ru.dbotthepony.kstarbound.defs.EntityType
 import ru.dbotthepony.kstarbound.defs.HitType
+import ru.dbotthepony.kstarbound.io.nullable
 import ru.dbotthepony.kstarbound.math.AABB
 import ru.dbotthepony.kstarbound.math.vector.Vector2d
 import ru.dbotthepony.kstarbound.network.packets.DamageNotificationPacket

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/ActorMovementController.kt

@@ -1,6 +1,5 @@
 package ru.dbotthepony.kstarbound.world.entities
 
-import ru.dbotthepony.kommons.io.nullable
 import ru.dbotthepony.kommons.util.getValue
 import ru.dbotthepony.kommons.util.setValue
 import ru.dbotthepony.kstarbound.Globals
@@ -9,6 +8,7 @@ import ru.dbotthepony.kstarbound.math.vector.Vector2d
 import ru.dbotthepony.kstarbound.defs.ActorMovementParameters
 import ru.dbotthepony.kstarbound.defs.JumpProfile
 import ru.dbotthepony.kstarbound.defs.MovementParameters
+import ru.dbotthepony.kstarbound.io.nullable
 import ru.dbotthepony.kstarbound.json.builder.JsonFactory
 import ru.dbotthepony.kstarbound.network.syncher.networkedBoolean
 import ru.dbotthepony.kstarbound.network.syncher.networkedData
@@ -239,7 +239,7 @@ class ActorMovementController() : MovementController() {
 		updateParameters(calculateMovementParameters(actorMovementParameters))
 	}
 
-	// TODO: run is unsed
+	// TODO: run is unused
 	fun pathMove(position: Vector2d, run: Boolean, parameters: PathFinder.Parameters? = null): Pair<Vector2d, Boolean>? {
 		// FIXME: code flow is stupid
 
@@ -281,6 +281,7 @@ class ActorMovementController() : MovementController() {
 		controlMove = null
 		controlRun = false
 		controlCrouch = false
+		controlDown = false
 		controlJump = false
 		controlJumpAnyway = false
 		controlFly = null

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/Animator.kt

@@ -9,8 +9,8 @@ import org.apache.logging.log4j.LogManager
 import ru.dbotthepony.kommons.gson.contains
 import ru.dbotthepony.kommons.gson.getArray
 import ru.dbotthepony.kommons.gson.set
-import ru.dbotthepony.kommons.io.IntValueCodec
-import ru.dbotthepony.kommons.io.map
+import ru.dbotthepony.kstarbound.io.IntValueCodec
+import ru.dbotthepony.kstarbound.io.map
 import ru.dbotthepony.kommons.math.RGBAColor
 import ru.dbotthepony.kstarbound.math.matrix.Matrix3d
 import ru.dbotthepony.kstarbound.math.matrix.Matrix3f

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/EffectEmitter.kt

@@ -3,7 +3,7 @@ package ru.dbotthepony.kstarbound.world.entities
 import com.google.gson.JsonArray
 import com.google.gson.JsonElement
 import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.util.getValue
 import ru.dbotthepony.kommons.util.setValue
 import ru.dbotthepony.kstarbound.Starbound

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/MonsterEntity.kt

@@ -12,10 +12,7 @@ import org.classdump.luna.ByteString
 import org.classdump.luna.Table
 import ru.dbotthepony.kommons.gson.get
 import ru.dbotthepony.kommons.gson.set
-import ru.dbotthepony.kommons.io.DoubleValueCodec
-import ru.dbotthepony.kommons.io.FloatValueCodec
-import ru.dbotthepony.kommons.io.map
-import ru.dbotthepony.kommons.io.nullable
+import ru.dbotthepony.kstarbound.io.map
 import ru.dbotthepony.kommons.util.Either
 import ru.dbotthepony.kommons.util.getValue
 import ru.dbotthepony.kommons.util.setValue
@@ -39,6 +36,9 @@ import ru.dbotthepony.kstarbound.defs.actor.StatusControllerConfig
 import ru.dbotthepony.kstarbound.defs.item.TreasurePoolDefinition
 import ru.dbotthepony.kstarbound.defs.monster.MonsterVariant
 import ru.dbotthepony.kstarbound.fromJsonFast
+import ru.dbotthepony.kstarbound.io.DoubleValueCodec
+import ru.dbotthepony.kstarbound.io.FloatValueCodec
+import ru.dbotthepony.kstarbound.io.nullable
 import ru.dbotthepony.kstarbound.json.builder.JsonFactory
 import ru.dbotthepony.kstarbound.lua.LuaEnvironment
 import ru.dbotthepony.kstarbound.lua.LuaMessageHandlerComponent

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/MovementController.kt

@@ -1,11 +1,9 @@
 package ru.dbotthepony.kstarbound.world.entities
 
 import it.unimi.dsi.fastutil.objects.ObjectArrayList
-import ru.dbotthepony.kommons.io.DoubleValueCodec
-import ru.dbotthepony.kommons.io.FloatValueCodec
-import ru.dbotthepony.kommons.io.StreamCodec
-import ru.dbotthepony.kommons.io.koptional
-import ru.dbotthepony.kommons.io.map
+import ru.dbotthepony.kstarbound.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.koptional
+import ru.dbotthepony.kstarbound.io.map
 import ru.dbotthepony.kstarbound.math.AABB
 import ru.dbotthepony.kommons.util.KOptional
 import ru.dbotthepony.kommons.util.Listenable
@@ -17,6 +15,8 @@ import ru.dbotthepony.kstarbound.Globals
 import ru.dbotthepony.kstarbound.Registry
 import ru.dbotthepony.kstarbound.defs.MovementParameters
 import ru.dbotthepony.kstarbound.defs.tile.LiquidDefinition
+import ru.dbotthepony.kstarbound.io.DoubleValueCodec
+import ru.dbotthepony.kstarbound.io.FloatValueCodec
 import ru.dbotthepony.kstarbound.math.Interpolator
 import ru.dbotthepony.kstarbound.network.syncher.NetworkedGroup
 import ru.dbotthepony.kstarbound.network.syncher.networkedBoolean
@@ -197,9 +197,6 @@ open class MovementController {
 	var movementParameters: MovementParameters = Globals.movementParameters
 		protected set
 
-	var gravityMultiplier = 1.0
-	var isGravityDisabled = false
-
 	open fun isAtWorldLimit(bottomOnly: Boolean = false): Boolean {
 		return false // TODO
 	}
@@ -212,7 +209,7 @@ open class MovementController {
 		}
 
 	fun determineGravity(): Vector2d {
-		if (isGravityDisabled)
+		if (movementParameters.gravityEnabled == false)
 			return Vector2d.ZERO
 
 		return world.chunkMap.gravityAt(position)
@@ -279,7 +276,7 @@ open class MovementController {
 	 */
 	// TODO: Ghost collisions occur, where objects trip on edges
 	open fun move(delta: Double) {
-		isZeroGravity = isGravityDisabled || gravityMultiplier == 0.0 || determineGravity().lengthSquared == 0.0
+		isZeroGravity = movementParameters.gravityEnabled == false || (movementParameters.gravityMultiplier ?: 1.0) == 0.0 || determineGravity().lengthSquared == 0.0
 
 		val movementParameters = movementParameters
 

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/NPCEntity.kt

@@ -0,0 +1,35 @@
+package ru.dbotthepony.kstarbound.world.entities
+
+import ru.dbotthepony.kstarbound.defs.EntityType
+import ru.dbotthepony.kstarbound.math.AABB
+import ru.dbotthepony.kstarbound.world.entities.api.InteractiveEntity
+import ru.dbotthepony.kstarbound.world.entities.api.ScriptedEntity
+import java.io.DataOutputStream
+
+class NPCEntity : ActorEntity(), InteractiveEntity, ScriptedEntity {
+	override val type: EntityType
+		get() = EntityType.NPC
+	override val statusController: StatusController
+		get() = TODO("Not yet implemented")
+	override val damageBarType: DamageBarType
+		get() = TODO("Not yet implemented")
+
+	override fun writeNetwork(stream: DataOutputStream, isLegacy: Boolean) {
+		TODO("Not yet implemented")
+	}
+
+	override val metaBoundingBox: AABB
+		get() = TODO("Not yet implemented")
+	override val name: String
+		get() = TODO("Not yet implemented")
+	override val description: String
+		get() = TODO("Not yet implemented")
+
+	override fun callScript(fnName: String, vararg arguments: Any?): Array<Any?> {
+		TODO("Not yet implemented")
+	}
+
+	override fun evalScript(code: String): Array<Any?> {
+		TODO("Not yet implemented")
+	}
+}

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/PathController.kt

@@ -102,6 +102,9 @@ class PathController(val controller: ActorMovementController, var edgeTimer: Dou
 						this.path.addAll(newPath)
 					}
 				}
+			} else if (this.path.isEmpty() && newPath.isNotEmpty()) {
+				merged = true
+				this.path.addAll(newPath)
 			}
 
 			if (!merged && controller.position != this.startPosition) {
@@ -130,7 +133,11 @@ class PathController(val controller: ActorMovementController, var edgeTimer: Dou
 			}
 
 			this.edgeTimer = newEdgeTimer
-			return this.path.isEmpty()
+
+			if (this.path.isEmpty())
+				return true
+			else
+				return null
 		} else {
 			return null
 		}
@@ -139,7 +146,7 @@ class PathController(val controller: ActorMovementController, var edgeTimer: Dou
 	fun findPath(target: Vector2d): Boolean? {
 		// reached the end of the last path and we have a new target position to move toward
 
-		if (path.isEmpty() && controller.world.geometry.diff(this.target!!, target).lengthSquared > 0.1) {
+		if (this.target != null && path.isEmpty() && controller.world.geometry.diff(this.target!!, target).lengthSquared > 0.1) {
 			reset()
 			this.target = target
 		}

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/StatusController.kt

@@ -17,9 +17,8 @@ import ru.dbotthepony.kommons.collect.ListenableMap
 import ru.dbotthepony.kommons.collect.collect
 import ru.dbotthepony.kommons.collect.map
 import ru.dbotthepony.kommons.gson.set
-import ru.dbotthepony.kommons.io.IntValueCodec
-import ru.dbotthepony.kommons.io.StreamCodec
-import ru.dbotthepony.kommons.io.nullable
+import ru.dbotthepony.kstarbound.io.IntValueCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.io.readKOptional
 import ru.dbotthepony.kommons.io.writeBinaryString
 import ru.dbotthepony.kommons.io.writeKOptional
@@ -40,6 +39,7 @@ import ru.dbotthepony.kstarbound.defs.actor.StatModifier
 import ru.dbotthepony.kstarbound.defs.actor.StatModifierType
 import ru.dbotthepony.kstarbound.defs.actor.StatusControllerConfig
 import ru.dbotthepony.kstarbound.fromJsonFast
+import ru.dbotthepony.kstarbound.io.nullable
 import ru.dbotthepony.kstarbound.io.readInternedString
 import ru.dbotthepony.kstarbound.json.builder.JsonFactory
 import ru.dbotthepony.kstarbound.lua.LuaEnvironment

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/behavior/AbstractBehaviorNode.kt

@@ -23,6 +23,9 @@ abstract class AbstractBehaviorNode {
 		RUNNING(null)
 	}
 
+	var calls = 0
+		protected set
+
 	abstract fun run(delta: Double, state: BehaviorState): Status
 	abstract fun reset()
 

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/behavior/ActionNode.kt

@@ -14,6 +14,7 @@ class ActionNode(val name: String, val parameters: Map<String, NodeParameter>, v
 	private val nodeID = BehaviorState.NODE_GARBAGE_INDEX.getAndIncrement()
 
 	override fun run(delta: Double, state: BehaviorState): Status {
+		calls++
 		var coroutine = coroutine
 		var firstTime = false
 
@@ -67,7 +68,7 @@ class ActionNode(val name: String, val parameters: Map<String, NodeParameter>, v
 	}
 
 	override fun toString(): String {
-		return "ActionNode[$name, parameters=$parameters, outputs=$outputs, coroutine=$coroutine]"
+		return "ActionNode[$calls / $name, parameters=$parameters, outputs=$outputs, coroutine=$coroutine]"
 	}
 
 	companion object {

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/behavior/DecoratorNode.kt

@@ -15,6 +15,7 @@ class DecoratorNode(val name: String, val parameters: Map<String, NodeParameter>
 	private val nodeID = BehaviorState.NODE_GARBAGE_INDEX.getAndIncrement()
 
 	override fun run(delta: Double, state: BehaviorState): Status {
+		calls++
 		var coroutine = coroutine
 
 		if (coroutine == null) {
@@ -100,7 +101,7 @@ class DecoratorNode(val name: String, val parameters: Map<String, NodeParameter>
 	}
 
 	override fun toString(): String {
-		return "DecoratorNode[$name, coroutine=$coroutine, parameters=$parameters, children=$child]"
+		return "DecoratorNode[$calls / $name, coroutine=$coroutine, parameters=$parameters, children=$child]"
 	}
 
 	companion object {

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/behavior/DynamicNode.kt

@@ -8,6 +8,7 @@ class DynamicNode(val children: ImmutableList<AbstractBehaviorNode>) : AbstractB
 	private var index = 0
 
 	override fun run(delta: Double, state: BehaviorState): Status {
+		calls++
 		for ((i, node) in children.withIndex()) {
 			val status = node.runAndReset(delta, state)
 
@@ -27,7 +28,7 @@ class DynamicNode(val children: ImmutableList<AbstractBehaviorNode>) : AbstractB
 	}
 
 	override fun toString(): String {
-		return "DynamicNode[${children.size}, index=$index, current=${children.getOrNull(index)}]"
+		return "DynamicNode[$calls / ${children.size}, index=$index, current=${children.getOrNull(index)}]"
 	}
 
 	override fun reset() {

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/behavior/ParallelNode.kt

@@ -34,6 +34,7 @@ class ParallelNode(parameters: Map<String, NodeParameter>, val children: Immutab
 	private var lastSucceeded = -1
 
 	override fun run(delta: Double, state: BehaviorState): Status {
+		calls++
 		var failed = 0
 		var succeeded = 0
 
@@ -58,7 +59,7 @@ class ParallelNode(parameters: Map<String, NodeParameter>, val children: Immutab
 	}
 
 	override fun toString(): String {
-		return "ParallelNode[children=${children.size}, successLimit=$successLimit, failLimit=$failLimit, lastFailed=$lastFailed, lastSucceeded=$lastSucceeded]"
+		return "ParallelNode[$calls / children=${children.size}, successLimit=$successLimit, failLimit=$failLimit, lastFailed=$lastFailed, lastSucceeded=$lastSucceeded]"
 	}
 
 	override fun reset() {

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/behavior/RandomizeNode.kt

@@ -8,6 +8,8 @@ class RandomizeNode(val children: ImmutableList<AbstractBehaviorNode>) : Abstrac
 	var index = -1
 
 	override fun run(delta: Double, state: BehaviorState): Status {
+		calls++
+
 		if (index == -1 && children.isNotEmpty())
 			index = state.lua.random.nextInt(children.size)
 
@@ -19,9 +21,9 @@ class RandomizeNode(val children: ImmutableList<AbstractBehaviorNode>) : Abstrac
 
 	override fun toString(): String {
 		if (index == -1)
-			return "RandomizeNode[${children.size}, not chosen]"
+			return "RandomizeNode[$calls / ${children.size}, not chosen]"
 		else
-			return "RandomizeNode[${children.size}, ${children[index]}]"
+			return "RandomizeNode[$calls / ${children.size}, ${children[index]}]"
 	}
 
 	override fun reset() {

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/behavior/SequenceNode.kt

@@ -4,25 +4,30 @@ import com.google.common.collect.ImmutableList
 import org.classdump.luna.runtime.ExecutionContext
 import ru.dbotthepony.kstarbound.lua.userdata.BehaviorState
 
-class SequenceNode(val children: ImmutableList<AbstractBehaviorNode>) : AbstractBehaviorNode() {
+class SequenceNode(val children: ImmutableList<AbstractBehaviorNode>, val isSelector: Boolean) : AbstractBehaviorNode() {
 	private var index = 0
 
 	override fun run(delta: Double, state: BehaviorState): Status {
+		calls++
+
 		while (index < children.size) {
 			val child = children[index]
 			val status = child.runAndReset(delta, state)
 
-			if (status == Status.FAILURE || status == Status.RUNNING)
+			if ((isSelector && status == Status.SUCCESS || !isSelector && status == Status.FAILURE) || status == Status.RUNNING)
 				return status
 
 			index++
 		}
 
-		return Status.SUCCESS
+		return if (isSelector) Status.FAILURE else Status.SUCCESS
 	}
 
 	override fun toString(): String {
-		return "SequenceNode[${children.size}, index=$index, current=${children.getOrNull(index)}]"
+		if (isSelector)
+			return "SelectorNode[$calls / ${children.size}, index=$index, current=${children.getOrNull(index)}]"
+		else
+			return "SequenceNode[$calls / ${children.size}, index=$index, current=${children.getOrNull(index)}]"
 	}
 
 	override fun reset() {

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/player/HotbarIndex.kt

@@ -1,6 +1,6 @@
 package ru.dbotthepony.kstarbound.world.entities.player
 
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kstarbound.defs.actor.EssentialSlot
 import ru.dbotthepony.kstarbound.item.ItemStack
 import java.io.DataInputStream

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/player/PlayerInventory.kt

@@ -3,8 +3,6 @@ package ru.dbotthepony.kstarbound.world.entities.player
 import com.google.common.collect.ImmutableMap
 import ru.dbotthepony.kommons.arrays.Object2DArray
 import ru.dbotthepony.kommons.guava.immutableList
-import ru.dbotthepony.kommons.io.LongValueCodec
-import ru.dbotthepony.kommons.io.UnsignedVarLongCodec
 import ru.dbotthepony.kommons.io.readKOptional
 import ru.dbotthepony.kommons.io.writeKOptional
 import ru.dbotthepony.kommons.util.KOptional
@@ -14,6 +12,8 @@ import ru.dbotthepony.kstarbound.Globals
 import ru.dbotthepony.kstarbound.defs.actor.EquipmentSlot
 import ru.dbotthepony.kstarbound.defs.actor.EssentialSlot
 import ru.dbotthepony.kstarbound.defs.item.ItemDescriptor
+import ru.dbotthepony.kstarbound.io.LongValueCodec
+import ru.dbotthepony.kstarbound.io.UnsignedVarLongCodec
 import ru.dbotthepony.kstarbound.item.ItemStack
 import ru.dbotthepony.kstarbound.network.syncher.NetworkedGroup
 import ru.dbotthepony.kstarbound.network.syncher.legacyCodec

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/player/TechController.kt

@@ -1,9 +1,9 @@
 package ru.dbotthepony.kstarbound.world.entities.player
 
-import ru.dbotthepony.kommons.io.IntValueCodec
-import ru.dbotthepony.kommons.io.StreamCodec
-import ru.dbotthepony.kommons.io.koptional
-import ru.dbotthepony.kommons.io.map
+import ru.dbotthepony.kstarbound.io.IntValueCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.koptional
+import ru.dbotthepony.kstarbound.io.map
 import ru.dbotthepony.kommons.io.readKOptional
 import ru.dbotthepony.kommons.io.writeBinaryString
 import ru.dbotthepony.kommons.io.writeKOptional

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/tile/WireConnection.kt

@@ -1,6 +1,6 @@
 package ru.dbotthepony.kstarbound.world.entities.tile
 
-import ru.dbotthepony.kommons.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.StreamCodec
 import ru.dbotthepony.kommons.io.readSignedVarInt
 import ru.dbotthepony.kommons.io.readVarInt
 import ru.dbotthepony.kommons.io.writeSignedVarInt

src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/tile/WorldObject.kt

@@ -26,9 +26,8 @@ import ru.dbotthepony.kstarbound.defs.`object`.ObjectOrientation
 import ru.dbotthepony.kommons.gson.get
 import ru.dbotthepony.kommons.gson.set
 import ru.dbotthepony.kommons.guava.immutableSet
-import ru.dbotthepony.kommons.io.RGBACodec
-import ru.dbotthepony.kommons.io.StreamCodec
-import ru.dbotthepony.kommons.io.map
+import ru.dbotthepony.kstarbound.io.StreamCodec
+import ru.dbotthepony.kstarbound.io.map
 import ru.dbotthepony.kommons.io.writeBinaryString
 import ru.dbotthepony.kstarbound.math.AABB
 import ru.dbotthepony.kommons.util.getValue
@@ -46,6 +45,7 @@ import ru.dbotthepony.kstarbound.defs.item.ItemDescriptor
 import ru.dbotthepony.kstarbound.defs.`object`.ObjectType
 import ru.dbotthepony.kstarbound.defs.quest.QuestArcDescriptor
 import ru.dbotthepony.kstarbound.defs.tile.TileDamage
+import ru.dbotthepony.kstarbound.io.RGBACodec
 import ru.dbotthepony.kstarbound.io.Vector2iCodec
 import ru.dbotthepony.kstarbound.json.JsonPath
 import ru.dbotthepony.kstarbound.json.jsonArrayOf