a few more savedata functions

stdlib/savedata.lua

@@ -161,6 +161,15 @@ function self.save(instant)
   end
 end
 
+function self.getLastSave()
+  checkIfInitialized()
+  if savedata._lastSave and savedata._lastSave[1] == 0 and savedata._lastSave[2] == 0 and savedata._lastSave[3] == 0 and savedata._lastSave[4] == 0 and savedata._lastSave[5] == 0 then
+    return nil
+  else
+    return savedata._lastSave
+  end
+end
+
 function uranium.init()
   loadedSavedata = true
   if savedataName then
@@ -177,4 +186,11 @@ function uranium.update()
   end
 end
 
+function self.enableAutosave()
+  checkIfInitialized()
+  function uranium.exit()
+    self.save(true)
+  end
+end
+
 return self