dirty way to go back a step with multiple uis in coordination

src/net/torvald/terrarum/modulebasegame/ui/UILoadDemoSavefiles.kt

@@ -29,6 +29,7 @@ import net.torvald.terrarum.ui.Movement
 import net.torvald.terrarum.ui.Toolkit
 import net.torvald.terrarum.ui.UICanvas
 import net.torvald.terrarum.ui.UIItem
+import net.torvald.terrarum.utils.RandomWordsName
 import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
 import java.time.Instant
 import java.time.format.DateTimeFormatter
@@ -39,6 +40,34 @@ import kotlin.math.roundToInt
 val SAVE_CELL_WIDTH = 480
 val SAVE_CELL_HEIGHT = 120
 
+/**
+ * The pinnacle of the dirty coding! This object exists only because I couldn't make
+ * UILoadDemoSavefiles persistent.
+ *
+ * This objects holds which Player and World has been chosen.
+ *
+ * WARNING: the values are not guaranteed to reset when the selector UI is closed!
+ */
+object UILoadGovernor {
+    var playerDisk: DiskSkimmer? = null
+        set(value) {
+            printdbg(this, "Player selected: ${value?.diskFile?.name}")
+            field = value
+        }
+
+    var worldDisk: DiskSkimmer? = null
+        set(value) {
+            printdbg(this, "World selected: ${value?.diskFile?.name}")
+            field = value
+        }
+
+    fun reset() {
+        printdbg(this, "Resetting player and world selection")
+        playerDisk = null
+        worldDisk = null
+    }
+}
+
 /**
  * Only works if current screen set by the App is [TitleScreen]
  *
@@ -46,6 +75,8 @@ val SAVE_CELL_HEIGHT = 120
  */
 class UILoadDemoSavefiles(val remoCon: UIRemoCon) : UICanvas() {
 
+    private val hash = RandomWordsName(3)
+
     init {
         CommonResourcePool.addToLoadingList("inventory_category") {
             TextureRegionPack("./assets/graphics/gui/inventory/category.tga", 20, 20)
@@ -110,15 +141,15 @@ class UILoadDemoSavefiles(val remoCon: UIRemoCon) : UICanvas() {
 
     private var showSpinner = false
 
-    // used by UIItem*Cells
-    internal var playerDisk: DiskSkimmer? = null
-    internal var worldDisk: DiskSkimmer? = null
-
     private val worldCells = ArrayList<UIItemWorldCells>()
     private val playerCells = ArrayList<UIItemPlayerCells>()
 
     var mode = 0; private set// 0: show players, 1: show worlds
 
+    constructor(remoCon: UIRemoCon, mode: Int) : this(remoCon) {
+        this.mode = mode
+    }
+
     fun advanceMode() {
         mode += 1
         uiScroll = 0f
@@ -189,6 +220,7 @@ class UILoadDemoSavefiles(val remoCon: UIRemoCon) : UICanvas() {
     private val mode2Node = Yaml(UITitleRemoConYaml.injectedMenuSingleWorldSel).parse()
 
     private val menus = listOf(mode1Node, mode2Node)
+    private val titles = listOf("CONTEXT_CHARACTER", "MENU_LABEL_WORLD")
 
     init {
         // this UI will NOT persist; the parent of the mode1Node must be set using an absolute value (e.g. treeRoot, not remoCon.currentRemoConContents)
@@ -199,8 +231,8 @@ class UILoadDemoSavefiles(val remoCon: UIRemoCon) : UICanvas() {
         mode1Node.parent = remoCon.treeRoot
         mode2Node.parent = mode1Node
 
-        mode1Node.data = "MENU_MODE_SINGLEPLAYER+NODISPOSE : net.torvald.terrarum.modulebasegame.ui.UILoadDemoSavefiles"
+        mode1Node.data = "MENU_MODE_SINGLEPLAYER : net.torvald.terrarum.modulebasegame.ui.UILoadDemoSavefiles"
-        mode2Node.data = "MENU_MODE_SINGLEPLAYER+NODISPOSE : net.torvald.terrarum.modulebasegame.ui.UILoadDemoSavefiles"
+        mode2Node.data = "MENU_MODE_SINGLEPLAYER : net.torvald.terrarum.modulebasegame.ui.UILoadDemoSavefiles"
 
         printdbg(this, "mode1Node parent: ${mode1Node.parent?.data}") // will be 'null' because the parent is the root node
         printdbg(this, "mode1Node data: ${mode1Node.data}")
@@ -267,7 +299,7 @@ class UILoadDemoSavefiles(val remoCon: UIRemoCon) : UICanvas() {
             App.fontGame.draw(batch, txt, (App.scr.width - App.fontGame.getWidth(txt)) / 2f, (App.scr.height - App.fontGame.lineHeight) / 2f)
 
             if (loadFired == 2) {
-                LoadSavegame(playerDisk!!, worldDisk)
+                LoadSavegame(UILoadGovernor.playerDisk!!, UILoadGovernor.worldDisk)
             }
         }
         else {
@@ -327,7 +359,7 @@ class UILoadDemoSavefiles(val remoCon: UIRemoCon) : UICanvas() {
                 batch.draw(saveTex, (width - uiWidth - 10) / 2f, 0f)
 
                 // draw texts
-                val loadGameTitleStr = Lang["MENU_IO_LOAD"]
+                val loadGameTitleStr = Lang[titles[mode]] + "$EMDASH$hash"
                 // "Game Load"
                 App.fontGame.draw(batch, loadGameTitleStr, (width - App.fontGame.getWidth(loadGameTitleStr)).div(2).toFloat(), titleTextPosY.toFloat())
                 // Control help
@@ -445,7 +477,7 @@ class UIItemPlayerCells(
     private var thumb: TextureRegion? = null
 
     override var clickOnceListener: ((Int, Int, Int) -> Unit)? = { _: Int, _: Int, _: Int ->
-        parent.playerDisk = skimmer
+        UILoadGovernor.playerDisk = skimmer
         parent.advanceMode()
     }
 
@@ -641,7 +673,7 @@ class UIItemWorldCells(
     }
 
     override var clickOnceListener: ((Int, Int, Int) -> Unit)? = { _: Int, _: Int, _: Int ->
-        parent.worldDisk = skimmer
+        UILoadGovernor.worldDisk = skimmer
         parent.advanceMode()
     }
 

src/net/torvald/terrarum/modulebasegame/ui/UINewWorld.kt

@@ -73,7 +73,7 @@ class UINewWorld(val remoCon: UIRemoCon) : UICanvas() {
             printdbg(this, "generate! Size=${sizeSelector.selection}, Name=${nameInput.getTextOrPlaceholder()}, Seed=${seedInput.getTextOrPlaceholder()}")
         }
         backButton.touchDownListener = { _, _, _, _ ->
-            printdbg(this, "back!")
+            remoCon.openUI(UILoadDemoSavefiles(remoCon, 1))
         }
 
         addUIitem(sizeSelector)

src/net/torvald/terrarum/modulebasegame/ui/UIRemoCon.kt

@@ -43,6 +43,8 @@ open class UIRemoCon(val parent: TitleScreen, val treeRoot: QNDTreeNode<String>)
         registerUIclasses(treeRoot)
     }
 
+    var currentRemoConLabelCount = 0; private set
+
     private fun registerUIclasses(tree: QNDTreeNode<String>) {
         tree.traversePreorder { node, _ ->
             val splittedNodeName = node.data?.split(yamlSep)
@@ -72,6 +74,7 @@ open class UIRemoCon(val parent: TitleScreen, val treeRoot: QNDTreeNode<String>)
     private fun generateNewRemoCon(node: QNDTreeNode<String>): UIRemoConElement {
         val labels = Array(node.children.size) { node.children[it].data?.split(yamlSep)?.get(0)?.split(tagSep)?.get(0) ?: "(null)" }
         val tags = Array(node.children.size) { arrayOf(node.children[it].data?.split(yamlSep)?.get(0)?.split(tagSep)?.getOrNull(1) ?: "") }
+        currentRemoConLabelCount = labels.size
         return UIRemoConElement(this, labels, tags)
     }
 
@@ -189,6 +192,20 @@ open class UIRemoCon(val parent: TitleScreen, val treeRoot: QNDTreeNode<String>)
         }
     }
 
+    fun openUI(external: UICanvas) {
+        openUI?.let {
+            it.setAsClose()
+            it.dispose()
+        }
+
+
+        printdbg(this, "Displaying external UI ${external.javaClass.canonicalName}")
+        external.setPosition(0,0)
+        parent.uiFakeBlurOverlay.setAsOpen()
+        external.setAsOpen()
+        openUI = external
+    }
+
     override fun renderUI(batch: SpriteBatch, camera: Camera) {
         remoConTray.render(batch, camera)
         openUI?.render(batch, camera)
@@ -253,8 +270,10 @@ open class UIRemoCon(val parent: TitleScreen, val treeRoot: QNDTreeNode<String>)
 
     class UIRemoConElement(uiRemoCon: UIRemoCon, val labels: Array<String>, val tags: Array<Array<String>>) {
 
-        private val lineHeight = 36
+        companion object {
-        private val paddingLeft = 48
+            const val lineHeight = 36
+            const val paddingLeft = 48
+        }
 
         private val menubar = UIItemTextButtonList(
                 uiRemoCon,

src/net/torvald/terrarum/ui/UIItemTransitionContainer.kt

@@ -76,7 +76,7 @@ open class UIItemTransitionContainer(
 
         uis.forEachIndexed { index, ui ->
             if (currentPosition > index - 1 + epsilon && currentPosition < index + 1 - epsilon) {
-                ui.setAsOpen()
+                if (!ui.isOpened && !ui.isOpening) ui.setAsOpen()
                 ui.render(batch, camera)
 
                 if (debugvals) {
@@ -84,7 +84,7 @@ open class UIItemTransitionContainer(
                 }
             }
             else {
-                ui.setAsClose()
+                if (!ui.isClosed && !ui.isClosing) ui.setAsClose()
             }
         }