52 lines
1.8 KiB
Haskell
52 lines
1.8 KiB
Haskell
module Dodge.ItEffect where
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import Dodge.Euse
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import Dodge.Data
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import Dodge.LightSource.Torch
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import Control.Lens
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doInvEffect :: ItInvEffect -> Item -> Creature -> World -> World
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doInvEffect iie = case iie of
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NoInvEffect -> const $ const id
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RewindEffect -> rewindEffect
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-- ResetAttachmentEffect -> resetAttachmentEffect
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EffectIfHeld f g -> onOffEff f g
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CreateHeldLight -> createHeldLight
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CreateShieldWall -> createShieldWall
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RemoveShieldWall -> removeShieldWall
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EffectWhileHeld f -> onOffEff f NoInvEffect
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doFloorEffect :: ItFloorEffect -> Int -> World -> World
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doFloorEffect NoFloorEffect = const id
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onOffEff :: ItInvEffect -> ItInvEffect -> Item -> Creature -> World -> World
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onOffEff f g it
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| _itIsHeld it = doInvEffect f it
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| otherwise = doInvEffect g it
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rewindEffect :: Item -> Creature -> World -> World
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rewindEffect itm cr w
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| Just invid == _crLeftInvSel cr = w & cWorld . rewindWorlds %~ (take maxcharge . (cw : ))
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& ptrWpCharge .~ length (_rewindWorlds (_cWorld w))
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| otherwise = w & cWorld . rewindWorlds .~ []
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& ptrWpCharge .~ 0
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where
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invid = _ipInvID $ _itLocation itm
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ptrWpCharge = cWorld . creatures . ix (_crID cr) . crInv . ix invid . itUse . leftConsumption . wpCharge
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maxcharge = itm ^?! itUse . leftConsumption . wpMaxCharge
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cw = _cWorld w
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& rewindWorlds .~ []
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--resetAttachmentEffect :: Item -> Creature -> World -> World
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--resetAttachmentEffect itm cr w
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-- | _ieCounter iteff < 0 = w & pointToIt . itAttachment .~ NoItAttachment
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-- | otherwise = w & pointToIt . itEffect . ieCounter -~ 1
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-- where
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-- iteff = _itEffect itm
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-- invid = _ipInvID $ _itLocation itm
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-- pointToIt = cWorld . creatures . ix (_crID cr) . crInv . ix invid
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createHeldLight :: Item -> Creature -> World -> World
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createHeldLight itm cr = createTorchLightOffset cr itm 0
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