new import screen

src/net/torvald/terrarum/savegame/DiskSkimmer.kt

@@ -447,6 +447,13 @@ removefile:
         fa.close()
     }
 
+    fun setSaveOrigin(bits: Int) {
+        val fa = RandomAccessFile(diskFile, "rwd")
+        fa.seek(51L)
+        fa.writeByte(bits)
+        fa.close()
+    }
+
     /**
      * @return Save type (0b 0000 00ab)
      *                   b: unset - full save; set - quicksave (only applicable to worlds -- quicksave just means the disk is in dirty state)
@@ -467,6 +474,15 @@ removefile:
         return fa.read().also { fa.close() }
     }
 
+    /**
+     * @return 16 if the savegame was imported, 0 if the savegame was generated in-game
+     */
+    fun getSaveOrigin(): Int {
+        val fa = RandomAccessFile(diskFile, "rwd")
+        fa.seek(51L)
+        return fa.read().also { fa.close() }
+    }
+
 
 
     override fun getDiskName(charset: Charset): String {

src/net/torvald/terrarum/savegame/VirtualDisk.kt

@@ -76,8 +76,11 @@ Version 254 is a customised version of TEVD tailored to be used as a savegame fo
                   0: Undefined (or very old version of the game)
                   1: Player Data
                   2: World Data
-    Int8[13]    Extra info bytes reserved for future usage
-    /* END extraInfoBytes */
+    Int8        Savefile Origin Flags
+                  0: Created in-game
+                 16: Imported
+    Int8[12]    Extra info bytes reserved for future usage
+    -- END extraInfoBytes --
     UInt8[236]  Rest of the long disk name (268 bytes total)
 
     (Header size: 300 bytes)
@@ -150,6 +153,9 @@ class VirtualDisk(
     var saveKind: Int
         set(value) { extraInfoBytes[2] = value.toByte() }
         get() = extraInfoBytes[2].toUint()
+    var saveOrigin: Int
+        set(value) { extraInfoBytes[3] = value.toByte() }
+        get() = extraInfoBytes[3].toUint()
     override fun getDiskName(charset: Charset) = diskName.toCanonicalString(charset)
     val root: DiskEntry
         get() = entries[0]!!
@@ -249,6 +255,11 @@ object VDSaveKind {
     const val WORLD_DATA = 2
 }
 
+object VDSaveOrigin {
+    const val INGAME = 0
+    const val IMPORTED = 16
+}
+
 object VDFileID {
     const val ROOT = 0L
     const val SAVEGAMEINFO = -1L