limitedly successful attempt to create a title screen

src/net/torvald/terrarum/console/ImportLayerData.kt

@@ -0,0 +1,33 @@
+package net.torvald.terrarum.console
+
+import net.torvald.terrarum.Terrarum
+import net.torvald.terrarum.serialise.ReadLayerData
+import net.torvald.terrarum.worlddrawer.FeaturesDrawer
+import java.io.FileInputStream
+import java.util.zip.GZIPInputStream
+
+/**
+ * Created by minjaesong on 2017-07-18.
+ */
+object ImportLayerData : ConsoleCommand {
+    override fun execute(args: Array<String>) {
+        if (args.size < 2) {
+            ExportLayerData.printUsage()
+            return
+        }
+
+        //val fis = GZIPInputStream(FileInputStream(args[1])) // this gzip is kaput
+        val fis = FileInputStream(args[1])
+        Terrarum.ingame!!.world = ReadLayerData(fis)
+        Terrarum.ingame!!.player.setPosition(
+                Terrarum.ingame!!.world.spawnY * FeaturesDrawer.TILE_SIZE.toDouble(),
+                Terrarum.ingame!!.world.spawnX * FeaturesDrawer.TILE_SIZE.toDouble()
+        )
+        fis.close()
+        Echo("Successfully loaded ${args[1]}")
+    }
+
+    override fun printUsage() {
+        Echo("Usage: importlayer path/to/layer.data")
+    }
+}