save/load kinda mostly working but fixtures are not getting their sprites back

src/net/torvald/terrarum/modulebasegame/gameactors/FixtureBase.kt

@@ -26,6 +26,8 @@ interface Electric {
 }
 
 /**
+ * Protip: do not make child classes take any argument, especially no function (function "classes" have no zero-arg constructor)
+ *
  * Created by minjaesong on 2016-06-17.
  */
 open class FixtureBase : ActorWithBody, CuedByTerrainChange {
@@ -37,7 +39,7 @@ open class FixtureBase : ActorWithBody, CuedByTerrainChange {
     var mainUI: UICanvas? = null
     var inventory: FixtureInventory? = null
 
-    protected constructor()
+    protected constructor() : super(RenderOrder.BEHIND, PhysProperties.IMMOBILE, null)
 
     constructor(blockBox0: BlockBox,
                 blockBoxProps: BlockBoxProps = BlockBoxProps(0),
@@ -45,7 +47,8 @@ open class FixtureBase : ActorWithBody, CuedByTerrainChange {
                 nameFun: () -> String,
                 mainUI: UICanvas? = null,
                 inventory: FixtureInventory? = null,
-                id: ActorID? = null) : super(renderOrder, PhysProperties.IMMOBILE, id) {
+                id: ActorID? = null
+    ) : super(renderOrder, PhysProperties.IMMOBILE, id) {
         blockBox = blockBox0
         this.blockBoxProps = blockBoxProps
         this.renderOrder = renderOrder
@@ -223,7 +226,10 @@ inline class BlockBoxProps(val flags: Int) {
  * @param width Width of the block box, tile-wise
  * @param height Height of the block box, tile-wise
  */
-data class BlockBox(val collisionType: ItemID, val width: Int, val height: Int) {
+data class BlockBox(
+        val collisionType: ItemID = NO_COLLISION,
+        val width: Int = 0,
+        val height: Int = 0) {
 
     /*fun redefine(collisionType: Int, width: Int, height: Int) {
         redefine(collisionType)
@@ -246,6 +252,6 @@ data class BlockBox(val collisionType: ItemID, val width: Int, val height: Int)
         const val NO_PASS_RIGHT = Block.ACTORBLOCK_NO_PASS_RIGHT
         const val NO_PASS_LEFT = Block.ACTORBLOCK_NO_PASS_LEFT
 
-        val NULL = BlockBox(NO_COLLISION, 0, 0)
+        val NULL = BlockBox()
     }
 }

src/net/torvald/terrarum/modulebasegame/gameactors/FixtureLogicSignalEmitter.kt

@@ -4,6 +4,7 @@ import net.torvald.terrarum.CommonResourcePool
 import net.torvald.terrarum.TerrarumAppConfiguration.TILE_SIZE
 import net.torvald.terrarum.blockproperties.WireCodex
 import net.torvald.terrarum.gameactors.AVKey
+import net.torvald.terrarum.langpack.Lang
 import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
 import org.dyn4j.geometry.Vector2
 
@@ -13,13 +14,15 @@ class FixtureLogicSignalEmitter : FixtureBase, Electric {
     override val wireEmission: HashMap<BlockBoxIndex, Vector2> = HashMap()
     override val wireConsumption: HashMap<BlockBoxIndex, Vector2> = HashMap()
 
-    protected constructor()
 
-    constructor(nameFun: () -> String) : super(
+    constructor() : super(
             BlockBox(BlockBox.NO_COLLISION, 1, 1),
-            nameFun = nameFun)
+            nameFun = { Lang["ITEM_LOGIC_SIGNAL_EMITTER"] }
+    )
 
     init {
+        println("INIT AGAIN FixtureLogicSignalEmitter")
+
         density = 1400.0
         setHitboxDimension(TILE_SIZE, TILE_SIZE, 0, -1)
 

src/net/torvald/terrarum/modulebasegame/gameactors/FixtureStorageChest.kt

@@ -32,13 +32,11 @@ import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
  */
 internal class FixtureStorageChest : FixtureBase {
 
-    private constructor()
-
-    constructor(nameFun: () -> String) : super(
+    constructor() : super(
             BlockBox(BlockBox.ALLOW_MOVE_DOWN, 1, 1),
             mainUI = UIStorageChest(),
             inventory = FixtureInventory(40, CAPACITY_MODE_COUNT),
-            nameFun = nameFun
+            nameFun = { Lang["ITEM_STORAGE_CHEST"] }
     ) {
 
         (mainUI as UIStorageChest).chestInventory = this.inventory!!

src/net/torvald/terrarum/modulebasegame/gameactors/FixtureTikiTorch.kt

@@ -12,6 +12,7 @@ import net.torvald.terrarum.gameactors.Hitbox
 import net.torvald.terrarum.gameactors.Luminous
 import net.torvald.terrarum.gameparticles.ParticleVanishingSprite
 import net.torvald.terrarum.gameparticles.ParticleVanishingText
+import net.torvald.terrarum.langpack.Lang
 import net.torvald.terrarum.modulebasegame.TerrarumIngame
 import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
 import java.util.*
@@ -34,11 +35,9 @@ internal class FixtureTikiTorch : FixtureBase, Luminous {
 
     override val lightBoxList: ArrayList<Hitbox> = ArrayList(1)
 
-    private constructor()
-
-    constructor(nameFun: () -> String) : super(
+    constructor() : super(
             BlockBox(BlockBox.NO_COLLISION, 1, 2),
-            nameFun = nameFun
+            nameFun = { Lang["ITEM_TIKI_TORCH"] }
     ) {
 
         // loading textures

src/net/torvald/terrarum/modulebasegame/gameactors/TapestryObject.kt

@@ -19,7 +19,7 @@ class TapestryObject : FixtureBase {
     var artName = ""; private set
     var artAuthor = ""; private set
 
-    private constructor()
+    private constructor() : super()
 
     constructor(pixmap: Pixmap, artName: String, artAuthor: String, nameFun: () -> String) : super() {
         this.artName = artName