loadlost: preloading game screenshots

src/net/torvald/terrarum/SavegameCollection.kt

@@ -132,12 +132,32 @@ fun DiskSkimmer.getTgaGz(vid: EntryID, width: Int, height: Int, shrinkage: Doubl
         }
     }
 }
+fun DiskSkimmer.getTgaGzPixmap(vid: EntryID, width: Int, height: Int, shrinkage: Double): Pixmap? {
+    return this.requestFile(vid).let { file ->
+        if (file != null) {
+            val zippedTga = (file.contents as EntryFile).bytes
+            val gzin = GZIPInputStream(ByteArray64InputStream(zippedTga))
+            val tgaFileContents = gzin.readAllBytes(); gzin.close()
+            val pixmap = Pixmap(tgaFileContents, 0, tgaFileContents.size)
+            return pixmap
+        }
+        else {
+            null
+        }
+    }
+}
 fun DiskSkimmer.getThumbnail(width: Int, height: Int, shrinkage: Double) =
     when (this.getSaveKind()) {
         1 -> this.getTgaGz(PLAYER_SCREENSHOT, width, height, shrinkage)
         2 -> this.getTgaGz(WORLD_SCREENSHOT, width, height, shrinkage)
         else -> throw IllegalArgumentException("Unknown save kind: ${this.getSaveKind()}")
     }
+fun DiskSkimmer.getThumbnailPixmap(width: Int, height: Int, shrinkage: Double) =
+    when (this.getSaveKind()) {
+        1 -> this.getTgaGzPixmap(PLAYER_SCREENSHOT, width, height, shrinkage)
+        2 -> this.getTgaGzPixmap(WORLD_SCREENSHOT, width, height, shrinkage)
+        else -> throw IllegalArgumentException("Unknown save kind: ${this.getSaveKind()}")
+    }
 
 class SavegameCollectionPair(private val player: SavegameCollection?, private val world: SavegameCollection?) {
 

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

@@ -59,12 +59,23 @@ class UILoadAutosave(val full: UILoadSavegame) : UICanvas() {
         addUIitem(mainBackButton)
     }
 
+    private var textureManual: TextureRegion? = null
+    private var textureAuto: TextureRegion? = null
+
     override fun show() {
         super.show()
 
         val loadables = full.loadables
-        val autoThumb = loadables.getAutoSave()!!.getThumbnail()
-        val manualThumb = loadables.getManualSave()!!.getThumbnail()
+        val texPlaceholder = CommonResourcePool.getAsTextureRegion("terrarum-defaultsavegamethumb")
+
+        val pixmapManual = full.playerButtonSelected!!.pixmapManual
+        val pixmapAuto = full.playerButtonSelected!!.pixmapAuto
+
+        textureManual?.texture?.tryDispose()
+        textureAuto?.texture?.tryDispose()
+
+        val manualThumb = if (pixmapManual != null) TextureRegion(Texture(pixmapManual)) else texPlaceholder
+        val autoThumb = if (pixmapAuto != null) TextureRegion(Texture(pixmapAuto)) else texPlaceholder
 
         loadManualThumbButton = UIItemImageButton(this, manualThumb,
             initialX = (Toolkit.drawWidth - altSelDrawW)/2 + altSelQdrawW - imageButtonW/2,
@@ -133,6 +144,10 @@ class UILoadAutosave(val full: UILoadSavegame) : UICanvas() {
     override fun dispose() {
         if (::loadAutoThumbButton.isInitialized) loadAutoThumbButton.dispose()
         if (::loadManualThumbButton.isInitialized) loadManualThumbButton.dispose()
+
+        // might throw Texture already disposed
+        textureManual?.texture?.tryDispose()
+        textureAuto?.texture?.tryDispose()
     }
 
 

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

@@ -512,6 +512,8 @@ class UIItemPlayerCells(
     lateinit var worldUUID: UUID; private set
 
     private val savegameStatus: Int
+    internal val pixmapManual: Pixmap?
+    internal val pixmapAuto: Pixmap?
 
     init {
         App.savegamePlayers[playerUUID]!!.loadable().getFile(SAVEGAMEINFO)?.bytes?.let {
@@ -533,6 +535,8 @@ class UIItemPlayerCells(
 
         val savegamePair = SavegameCollectionPair(App.savegamePlayers[playerUUID], App.savegameWorlds[worldUUID])
         savegameStatus = savegamePair.status
+        pixmapManual = savegamePair.getManualSave()?.player?.getThumbnailPixmap(SAVE_THUMBNAIL_MAIN_WIDTH, SAVE_THUMBNAIL_MAIN_HEIGHT, 2.0)
+        pixmapAuto = savegamePair.getAutoSave()?.player?.getThumbnailPixmap(SAVE_THUMBNAIL_MAIN_WIDTH, SAVE_THUMBNAIL_MAIN_HEIGHT, 2.0)
     }
 
     private fun parseDuration(seconds: Long): String {
@@ -696,6 +700,8 @@ class UIItemPlayerCells(
 
     override fun dispose() {
         sprite?.texture?.dispose()
+        pixmapManual?.dispose()
+        pixmapAuto?.dispose()
     }
 
 

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

@@ -110,7 +110,7 @@ class UILoadList(val full: UILoadSavegame) : UICanvas() {
                             e.printStackTrace()
                         }
 
-                        Thread.sleep(18) // to alleviate the "hiccup" when the UI is being opened
+                        Thread.sleep(1) // to alleviate the "hiccup" when the UI is being opened
                     }
 
                     printdbg(this, "============== ${this.hashCode()} ============== ")

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

@@ -2,6 +2,7 @@ package net.torvald.terrarum.modulebasegame.ui
 
 import com.badlogic.gdx.graphics.Camera
 import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.graphics.Texture
 import com.badlogic.gdx.graphics.g2d.SpriteBatch
 import com.badlogic.gdx.graphics.g2d.TextureRegion
 import net.torvald.terrarum.App
@@ -130,7 +131,9 @@ class UILoadManage(val full: UILoadSavegame) : UICanvas() {
         full.playerButtonSelected?.forceUnhighlight = true
         full.playerButtonSelected?.let { button ->
             screencap?.texture?.tryDispose()
-            screencap = App.savegamePlayers[button.playerUUID]!!.getThumbnail(screencapW, screencapH, 2.0)
+            (button.pixmapAuto ?: button.pixmapManual)?.let {
+                screencap = TextureRegion(Texture(it))
+            }
         }
     }
 
@@ -166,6 +169,8 @@ class UILoadManage(val full: UILoadSavegame) : UICanvas() {
 
                 // draw thumbnails of the most recent game
                 val tex = screencap ?: CommonResourcePool.getAsTextureRegion("terrarum-defaultsavegamethumb")
+
+
                 val tx = (Toolkit.drawWidth - screencapW) / 2
                 val ty = full.titleTopGradEnd + SAVE_CELL_HEIGHT + buttonGap
 
@@ -192,6 +197,7 @@ class UILoadManage(val full: UILoadSavegame) : UICanvas() {
     }
 
     override fun dispose() {
+        screencap?.texture?.tryDispose()
     }
 
     override fun touchDown(screenX: Int, screenY: Int, pointer: Int, button: Int): Boolean {