Implement remote screen for launcher projectiles

src/Dodge/DoubleTree.hs

@@ -120,7 +120,7 @@ headMap _ _ [] = []
 
 lastMap :: (a -> b) -> (a -> b) -> [a] -> [b]
 lastMap _ _ [] = []
-lastMap f _ (x:[]) = [f x]
+lastMap f _ [x] = [f x]
 lastMap f g (x:xs) = g x : lastMap f g xs
 
 prettyDT :: (a -> String) -> DoubleTree a -> [String]