Partially working scroll time item

src/Dodge/Update.hs

@@ -62,9 +62,15 @@ import SDL
 import Sound.Data
 import StrictHelp
 
-{- For most menus the only way to change the world is using event handling.  -}
 updateUniverse :: Universe -> Universe
-updateUniverse u
+updateUniverse = updateUniverseLast . updateUniverseFirst
+
+updateUniverseLast :: Universe -> Universe
+updateUniverseLast = over uvWorld (mouseButtons . each .~ True) -- to determine if the mouse button is held
+
+{- For most menus the only way to change the world is using event handling.  -}
+updateUniverseFirst :: Universe -> Universe
+updateUniverseFirst u
     | concurrentblocking = u
     | otherwise = case _uvScreenLayers u of
         (OptionScreen{_scOptionFlag = GameOverOptions} : _) ->
@@ -93,7 +99,12 @@ functionalUpdate' u = case u ^. uvWorld . timeFlow of
     _ -> u
 
 doTimeScroll :: Int -> World -> World
-doTimeScroll smoothing w = case w ^. scrollAmount of
+doTimeScroll smoothing w = case w ^? mouseButtons . ix ButtonLeft of
+    Just False -> w & timeFlow .~ NormalTimeFlow
+    _ -> doTimeScroll' smoothing w
+
+doTimeScroll' :: Int -> World -> World
+doTimeScroll' smoothing w = case w ^. scrollAmount of
     x | x > 1 -> w & scrollTimeBack & timeFlow . scrollSmoothing .~ 20
     x | x > 0 -> w & scrollTimeBack & timeFlow . scrollSmoothing %~ max 0
     x | x < (-1) -> w & scrollTimeForward & timeFlow . scrollSmoothing .~ negate 20
@@ -123,17 +134,17 @@ scrollTimeForward w = case w ^? timeFlow . futureWorlds . _head of
         w & timeFlow . futureWorlds %~ tail
             & cwTime . pastWorlds .:~ _cWorld w
             & cWorld .~ cw
-            & timeFlow . reverseAmount +~ 1
+            & timeFlow . reverseAmount .~ ramount
-            & pointerToItemLocation (w ^?! cWorld . itemLocations . ix i) . itUse . leftConsumption . wpCharge +~ 1
+            & pointerToItemLocation (w ^?! cWorld . itemLocations . ix i) . itUse . leftConsumption . wpCharge .~ ramount
   where
     i = w ^?! timeFlow . scrollItemLocation
+    ramount = (w ^?! timeFlow . reverseAmount) + 1
 
 -- | The update step.
 functionalUpdate :: Universe -> Universe
 functionalUpdate w =
     checkEndGame
         --    . updateRandGen
-        . over uvWorld (mouseButtons . each .~ True) -- to determine if the mouse button is held
         . over uvWorld (cwTime . worldClock +~ 1)
         . over uvWorld updateWorldSelect
         --        . over uvWorld doRewind

src/Dodge/Update/UsingInput.hs

@@ -53,7 +53,7 @@ pressedMBEffectsNoInventory :: M.Map MouseButton Bool -> World -> World
 pressedMBEffectsNoInventory pkeys w
     | isDown ButtonLeft && isDown ButtonRight && inTopInv =
         useItem (you w) w & hammers . ix DoubleMouseHam .~ HammerDown
-    | isDown ButtonLeft && inTopInv
+    | justPressedDown ButtonLeft && inTopInv
         && w ^?! hammers . ix DoubleMouseHam == HammerUp =
         useLeftItem (_yourID (_cWorld w)) w
     | isDown ButtonLeft && inTopInv =
@@ -68,6 +68,7 @@ pressedMBEffectsNoInventory pkeys w
     inTopInv = case _hudElement (_hud (_cWorld w)) of
         DisplayInventory NoSubInventory -> True
         _ -> False
+    justPressedDown but = (pkeys ^. at but) == Just False
     isDown but = but `M.member` pkeys
     rotation = angleBetween (_mousePos w) (_clickMousePos w)