in preparation of new demoworld creation for future version

src/net/torvald/terrarum/modulebasegame/console/ExportWorld.kt

@@ -0,0 +1,45 @@
+package net.torvald.terrarum.modulebasegame.console
+
+import net.torvald.terrarum.App
+import net.torvald.terrarum.Terrarum
+import net.torvald.terrarum.console.ConsoleCommand
+import net.torvald.terrarum.console.Echo
+import net.torvald.terrarum.gameworld.SimpleGameWorld
+import net.torvald.terrarum.modulebasegame.TerrarumIngame
+import net.torvald.terrarum.serialise.WriteSimpleWorld
+import java.io.File
+import java.io.IOException
+
+/**
+ * Used to create the titlescreen world
+ *
+ * Created by minjaesong on 2023-10-04.
+ */
+object ExportWorld : ConsoleCommand {
+    override fun execute(args: Array<String>) {
+        if (args.size == 2) {
+            try {
+                val ingame = Terrarum.ingame!! as TerrarumIngame
+                val file = File(App.defaultDir + "/Exports/${args[1]}.json")
+                val simpleworld = SimpleGameWorld(ingame.world.width, ingame.world.height).also {
+                    it.layerTerrain = ingame.world.layerTerrain
+                    it.layerWall = ingame.world.layerWall
+                    it.tileNumberToNameMap.putAll(ingame.world.tileNumberToNameMap)
+                }
+                file.writeText(WriteSimpleWorld(ingame, simpleworld, listOf()))
+                Echo("Exportworld: exported the world as ${args[1]}.json")
+            }
+            catch (e: IOException) {
+                Echo("Exportworld: IOException raised.")
+                e.printStackTrace()
+            }
+        }
+        else {
+            printUsage()
+        }
+    }
+
+    override fun printUsage() {
+        Echo("Usage: exportworld filename-without-extension")
+    }
+}

src/net/torvald/terrarum/modulebasegame/console/ImportWorld.kt

@@ -10,6 +10,8 @@ import java.io.File
 import java.io.IOException
 
 /**
+ * Used to debug the titlescreen world
+ *
  * Created by minjaesong on 2021-08-25.
  */
 object ImportWorld : ConsoleCommand {