Fix bug not allowing dragging at extreme bottom edge

ghcidOutput

@@ -1 +1 @@
-All good (594 modules, at 20:03:59)
+All good (594 modules, at 20:39:56)

src/Dodge/TestString.hs

@@ -1,6 +1,9 @@
 {-# OPTIONS_GHC -Wno-unused-imports #-}
 module Dodge.TestString where
 
+import Linear
+import Dodge.ListDisplayParams
+import Dodge.SelectionSections
 import qualified Control.Foldl as L
 import Dodge.DoubleTree
 import Dodge.Data.DoubleTree
@@ -24,7 +27,20 @@ testStringInit :: Universe -> [String]
 testStringInit u = 
     [ show $ u ^? uvWorld . input . mouseContext . mcoSelEnd
     , show $ u ^? uvWorld . hud . hudElement . diSelection
+    , show $ u ^? uvWorld . input . mouseContext
+    , show $ u ^? uvWorld . input . mouseContext . mcoDragSection
+    , show $ u ^? uvWorld . input . mouseContext . mcoMaybeSelect
+    , show $ u ^? uvWorld . input . mouseContext . mcoAboveSelect
+    , show $ u ^? uvWorld . input . mouseContext . mcoBelowSelect
+    , show mpos
+    , show yint
+    , show $ u ^? uvWorld . hud . hudElement . diSections >>= inverseSelSecYint yint
     ] 
+  where
+    idp = invDisplayParams $ u ^. uvWorld
+    cfig = u ^. uvConfig
+    yint =  posSelSecYint cfig idp y
+    mpos@(V2 _ y) = u ^. uvWorld . input . mousePos
 --    , show . fmap (fmap _siPictures) $ u ^? uvWorld . hud . hudElement . diSections . ix (-1) . ssItems
 --    <> [[toEnum (i+j * 32) | i <- [0..31]] | j <- [0..7]]
 --    <> map show (IM.elems (L.postscan (L.premap _siHeight L.sum)

src/Dodge/Update/Input/InGame.hs

@@ -292,7 +292,7 @@ shiftInvItems k x ab bn xs ss w = setSelWhileDragging . fromMaybe w $ do
             return $ shiftInvItemsUp k xs w
         else do
             guard $ not . null . snd $ IM.split maxi ss
-            guard $ Just (k,maxi+1) < bn
+            guard $ Just (k,maxi+1) /= bn
             return $ shiftInvItemsDown k xs w
 
 setSelWhileDragging :: World -> World