Highlight moused-over inventory items

src/Dodge/Render/HUD.hs

@@ -5,6 +5,7 @@ module Dodge.Render.HUD (
     selNumPos, -- this shoud probably be pushed back here
 ) where
 
+import Dodge.SelectionSections
 import Control.Lens
 import Control.Monad
 import qualified Data.Map.Strict as M
@@ -58,9 +59,13 @@ drawHP cfig =
 
 drawInventory :: SelectionSections () -> World -> Configuration -> Picture
 drawInventory sss w cfig =
-    drawSelectionSections sss (invDisplayParams w) cfig
+    drawSelectionSections sss ldp cfig
         <> iextra
+        <> translateScreenPos cfig (ldp ^. ldpPos)
+            (drawDIMouseOver w)
+        <> drawDISelections w cfig
   where
+    ldp = invDisplayParams w
     iextra = fromMaybe mempty $ do
         inv <- w ^? cWorld . lWorld . creatures . ix 0 . crInv
         let x = case invAdj inv of
@@ -68,6 +73,23 @@ drawInventory sss w cfig =
                 Right y -> y
         return $ inventoryExtra sss cfig w x
 
+drawDIMouseOver :: World -> Picture
+drawDIMouseOver w = fromMaybe mempty $ do
+    (_,i) <- w ^? hud . hudElement . subInventory . nsMouseOver . _Just
+    sss <- w ^? hud . hudElement . diSections
+    let idp = invDisplayParams w
+    return . color (withAlpha 0.5 white) $ selSecDrawCursorAt (0,i) 10 idp sss
+
+drawDISelections :: World -> Configuration -> Picture
+drawDISelections w cfig = fromMaybe mempty $ do
+    (i,j) <- w ^? hud . hudElement . subInventory . nsSelected . _Just
+    sss <- w ^? hud . hudElement . diSections
+    let idp = invDisplayParams w
+    tp <- selNumPos cfig idp sss 0 i
+    bp <- selNumPos cfig idp sss 0 j
+    return . color red $ line [tp,bp]
+
+
 drawSubInventory :: SubInventory -> Configuration -> World -> Picture
 drawSubInventory subinv cfig w = case subinv of
     LockedInventory -> mempty -- topInvCursor col cursPos cfig w
@@ -344,5 +366,8 @@ selNumPos cfig ldp sss i j = do
     s = _ldpScale ldp
     ygap = _ldpVerticalGap ldp
 
+
+
+
 selSecSelCol :: Int -> Int -> SelectionSections a -> Maybe Color
 selSecSelCol i j sss = sss ^? sssSections . ix i . ssItems . ix j . siColor