Move targeting to dedicated datatype within item

src/Dodge/Item/Weapon/Bezier.hs

@@ -40,11 +40,12 @@ bezierGun = defaultGun
 --    , _itFloorPict = bezierGunSPic
     , _itAttachment = NoItAttachment
     , _itScroll   = \_ _ -> removeItTarget
-    , _itEffect = rbSetTarget
+--    , _itEffect = rbSetTarget
 --    , _itZoom = defaultItZoom
     , _itConsumption = defaultAmmo
         { _ammoBaseMax = 15
         }
+    , _itTargeting' = targetRBPress
     }
 shootBezier :: Point2 -> Creature -> World -> World
 shootBezier targetp cr w = w & particles .:~ aCurveBulAt 

src/Dodge/Item/Weapon/BulletGun/Stick.hs

@@ -65,7 +65,6 @@ bangStick i = defaultGun
         ]
     , _itID = Nothing
     , _itInvColor = white
-    , _itTargeting = Nothing
     , _itParams = BulletShooter
         { _muzVel = 0.8
         , _rifling = 0.8
@@ -185,7 +184,6 @@ pistol = (bangStick 1)
 --    , _itEquipPict = pictureWeaponAim pistolPic
     , _itID = Nothing
     , _itInvColor = white
-    , _itTargeting = Nothing
     , _itParams = BulletShooter
         { _muzVel = 0.8
         , _rifling = 0.8

src/Dodge/Item/Weapon/ExtraEffect.hs

@@ -7,7 +7,8 @@ module Dodge.Item.Weapon.ExtraEffect
      itemLaserScopeEffect
     , autoSonarEffect
     , autoRadarEffect
-    , rbSetTarget
+    , targetRBPress
+--    , rbSetTarget
     ) where
 import Dodge.Data
 import Dodge.Base
@@ -81,19 +82,43 @@ autoSonarEffect = ItInvEffect {_itInvEffect = f 50 ,_itEffectCounter = 0 }
     f t _ cr i w = w 
         & creatures . ix (_crID cr) . crInv . ix i . itEffect . itInvEffect .~ f (t-1)
 
-rbSetTarget :: ItEffect
-rbSetTarget = ItInvEffect
-    {_itInvEffect  = setTarg
-    ,_itEffectCounter = 0
+targetRBPress :: Targeting
+targetRBPress = TargetingOnHeld
+    { _tgPos = Nothing
+    , _tgHeldUpdate = targetRBPressUpdate
+    , _tgDraw = targetRBPressDraw
     }
+targetRBPressDraw :: Int -> Item -> Creature -> World -> Picture
+targetRBPressDraw _ it _ w' = fromMaybe mempty $ do
+    mwp <- it ^? itTargeting' . tgPos . _Just
+    return $ setLayer 1 $ color red $ onLayer InvLayer $ uncurryV translate mwp 
+        $ rotate (_cameraRot w')
+        $ pictures
+            [line [V2   x  x, V2 (-x) (-x)]
+            ,line [V2 (-x) x, V2   x  (-x)]
+            ]
   where
-    setTarg :: ItEffect -> Creature -> Int -> World -> World
-    setTarg _ cr invid w
-        | _crInvSel cr /= invid = w
-        | SDL.ButtonRight `S.member` _mouseButtons w = w 
-            & creatures . ix (_crID cr) . crInv . ix invid . itTargeting 
-                %~ maybe (Just $ targetRBMousePos w) Just
-        | otherwise = w & creatures . ix (_crID cr) . crInv . ix invid . itTargeting .~ Nothing
+    x = 5 / _cameraZoom w'
+
+targetRBPressUpdate :: Item -> Creature -> World -> Targeting -> Targeting
+targetRBPressUpdate _ _ w t
+    | SDL.ButtonRight `S.member` _mouseButtons w = t
+        & tgPos %~ maybe (Just $ mouseWorldPos w) Just
+    | otherwise = t & tgPos %~ const Nothing
+
+--rbSetTarget :: ItEffect
+--rbSetTarget = ItInvEffect
+--    {_itInvEffect  = setTarg
+--    ,_itEffectCounter = 0
+--    }
+--  where
+--    setTarg :: ItEffect -> Creature -> Int -> World -> World
+--    setTarg _ cr invid w
+--        | _crInvSel cr /= invid = w
+--        | SDL.ButtonRight `S.member` _mouseButtons w = w 
+--            & creatures . ix (_crID cr) . crInv . ix invid . itTargeting 
+--                %~ maybe (Just $ targetRBMousePos w) Just
+--        | otherwise = w & creatures . ix (_crID cr) . crInv . ix invid . itTargeting .~ Nothing
 
 targetRBMousePos 
     :: World 

src/Dodge/Item/Weapon/Targeting.hs

@@ -10,9 +10,9 @@ useTargetPos
     -> Creature
     -> World
     -> World
-useTargetPos f cr w = case cr ^? crInv . ix (_crInvSel cr) . itTargeting . _Just of
+useTargetPos f cr w = case cr ^? crInv . ix (_crInvSel cr) . itTargeting' . tgPos of
     Nothing -> w
-    Just (g,_) -> f (g w) cr w
+    Just p -> f p cr w
 
 removeItTarget :: Item -> Item
-removeItTarget = itTargeting .~ Nothing
+removeItTarget = itTargeting' . tgPos .~ Nothing