Move towards explicitly listing weapon use effects, for modification

src/Dodge/Item/Weapon.hs

@@ -275,8 +275,10 @@ hvAutoGun = defaultAutoGun
     , _wpReloadState = 0
     , _itUseRate = 25
     , _itUseTime = 0
-    , _itUse =  \it -> rateIncAB 24 10 (torqueBeforeForced 0.1 (mkHvBul it)) 
+    , _itUse =  \it -> mkHvBul it
-        (torqueAfter 0.2 (mkHvBul it))
+    , _itUseModifiers =
+        [ rateIncABI 24 10 (torqueBeforeForcedI 0.1) (torqueAfterI 0.2)
+        ]
     , _wpRange = 20
     , _itFloorPict = onLayer FlItLayer hvAutoGunPic
     , _itAimingSpeed = 0.2

src/Dodge/Item/Weapon/TriggerType.hs

@@ -41,6 +41,8 @@ withThickSmoke eff cr w = eff cr $ foldl' (flip $ makeThickSmokeAt . (+.+ pos))
     dir = _crDir cr
     pos = _crPos cr +.+ (_crRad cr + 15) *.* unitVectorAtAngle dir
     ps = (replicateM 20 . randInCirc) 8 & evalState $ _randGen w
+-- TODO  create a trigger that does different things on first and continued
+-- fire.
 {- |
 Fires at an increasing rate.
 Has different effect after first fire.
@@ -48,22 +50,23 @@ Applies ammo check and use cooldown check.  -}
 rateIncAB 
     :: Int  -- ^ Start rate
     -> Int  -- ^ End rate
-    -> (Creature -> World -> World)  -- ^ Effect on first fire
+    -> ((Creature -> World -> World) -> Creature -> World -> World)  -- ^ Extra effect on first fire
-    -> (Creature -> World -> World)  -- ^ Effect on continued fire
+    -> ((Creature -> World -> World) -> Creature -> World -> World)  -- ^ Extra effect on continued fire
+    -> (Creature -> World -> World)  -- ^ Extra effect (always applied)
     -> Creature  -- ^ Creature id
     -> World 
     -> World
-rateIncAB startRate fastRate shooteff1 shooteff2 cr w
+rateIncAB startRate fastRate exeffFirst exeffCont eff cr w
     | repeatFire = w
         & pointItem %~ ( (itUseRate .~ max fastRate (currentRate - 1))
             . (wpLoadedAmmo -~ 1)
             . (itUseTime .~ currentRate) )
-        & shooteff2 cr
+        & exeffCont eff cr
     | firstFire = w
         & pointItem %~ ( (itUseRate .~ startRate - 1)
             . (wpLoadedAmmo -~ 1)
             . (itUseTime .~ startRate) )
-        & shooteff1 cr
+        & exeffFirst eff cr
     | reloadCondition = fromMaybe w $ startReloadingWeapon cr w
     | otherwise = w
   where 
@@ -80,6 +83,45 @@ rateIncAB startRate fastRate shooteff1 shooteff2 cr w
         && _wpLoadedAmmo item > 0
     reloadCondition = _wpLoadedAmmo item == 0
 {- |
+Fires at an increasing rate.
+Has different effect after first fire.
+Applies ammo check and use cooldown check.  -}
+rateIncABI
+    :: Int  -- ^ Start rate
+    -> Int  -- ^ End rate
+    -> ((Item -> Creature -> World -> World) -> Item -> Creature -> World -> World)  -- ^ Extra effect on first fire
+    -> ((Item -> Creature -> World -> World) -> Item -> Creature -> World -> World)  -- ^ Extra effect on continued fire
+    -> (Item -> Creature -> World -> World)  -- ^ Extra effect (always applied)
+    -> Item
+    -> Creature  -- ^ Creature id
+    -> World 
+    -> World
+rateIncABI startRate fastRate exeffFirst exeffCont eff item cr w
+    | repeatFire = w
+        & pointItem %~ ( (itUseRate .~ max fastRate (currentRate - 1))
+            . (wpLoadedAmmo -~ 1)
+            . (itUseTime .~ currentRate) )
+        & exeffCont eff item cr
+    | firstFire = w
+        & pointItem %~ ( (itUseRate .~ startRate - 1)
+            . (wpLoadedAmmo -~ 1)
+            . (itUseTime .~ startRate) )
+        & exeffFirst eff item cr
+    | reloadCondition = fromMaybe w $ startReloadingWeapon cr w
+    | otherwise = w
+  where 
+    cid = _crID cr
+    itRef = _crInvSel cr
+    pointItem = creatures . ix cid . crInv . ix itRef
+    currentRate = _itUseRate item
+    repeatFire = _wpReloadState item == 0 
+        && _itUseTime item == 1 
+        && _wpLoadedAmmo item > 0
+    firstFire = _wpReloadState item == 0 
+        && _itUseTime item == 0 
+        && _wpLoadedAmmo item > 0
+    reloadCondition = _wpLoadedAmmo item == 0
+{- |
 Shoot a weapon rapidly after a warm up.
 Applies ammo check as well.  -}
 withWarmUp 
@@ -439,6 +481,27 @@ withRandomOffset offsetAmount f cr w = f (cr & crPos %~ (+.+ offV)) $ set randGe
     offV = rotateV (_crDir cr) (V2 0 offsetVal)
 -- | Rotates a creature with minimum rotation at least 0.1.
 -- Rotates the player creature before applying the effect, other creatures after.
+torqueBeforeForcedI
+    :: Float    -- ^ Max possible rotation (less the 0.1 forced rotation)
+    -> (Item -> Creature -> World -> World) 
+                -- ^ Underlying effect
+    -> Item
+    -> Creature
+    -> World 
+    -> World
+torqueBeforeForcedI torque feff item cr w 
+    | cid == 0  = feff item (cr & crDir +~ rot') $ w
+        & randGen                    .~ g 
+        & creatures . ix cid . crDir +~ rot'
+        & cameraRot                  +~ rot'
+    | otherwise = feff item cr $ set randGen g $ over (creatures . ix cid . crDir) (+rot') w
+  where 
+    cid = _crID cr
+    (rot, g) = randomR (-torque,torque) $ _randGen w
+    rot' | rot < 0   = rot - 0.1
+         | otherwise = rot + 0.1
+-- | Rotates a creature with minimum rotation at least 0.1.
+-- Rotates the player creature before applying the effect, other creatures after.
 torqueBeforeForced 
     :: Float    -- ^ Max possible rotation (less the 0.1 forced rotation)
     -> (Creature -> World -> World) 
@@ -475,6 +538,22 @@ torqueBefore torque feff cr w
     cid = _crID cr
     (rot, g) = randomR (-torque,torque) $ _randGen w
 -- | Rotate a randomly creature after applying an effect.
+torqueAfterI
+    :: Float                    -- ^ Max possible rotation
+    -> (Item -> Creature -> World -> World)  -- ^ Underlying effect
+    -> Item
+    -> Creature                      -- ^ Creature id
+    -> World 
+    -> World
+torqueAfterI torque feff item cr w 
+    | cid == 0  = rotateScope $ set randGen g $ over cameraRot (+rot) $ feff item cr w
+    | otherwise = set randGen g $ over (creatures . ix cid . crDir) (+rot) $ feff item cr w
+  where 
+    cid = _crID cr
+    (rot, g) = randomR (-torque,torque) $ _randGen w
+    rotateScope = creatures . ix 0 . crInv . ix (_crInvSel (_creatures w IM.! 0))
+                          . itAttachment . _Just . scopePos %~ rotateV rot 
+-- | Rotate a randomly creature after applying an effect.
 torqueAfter
     :: Float                    -- ^ Max possible rotation
     -> (Creature -> World -> World)  -- ^ Underlying effect