37 lines
1.1 KiB
Haskell
37 lines
1.1 KiB
Haskell
{-# LANGUAGE BangPatterns #-}
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module Dodge.Wall.Move
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( moveWallID
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, moveWall
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, moveWallIDToward
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) where
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import Dodge.Data
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import Dodge.Base
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import Geometry
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import Dodge.Wall.Zone
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import Control.Lens
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import qualified Data.IntMap.Strict as IM
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moveWallID :: Int -> (Point2,Point2) -> World -> World
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moveWallID wlid wlline w = case w ^? walls . ix wlid of
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Nothing -> w
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Just wl -> moveWall wlid wl wlline w
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moveWall :: Int -> Wall -> (Point2,Point2) -> World -> World
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moveWall wlid wl wlline w = w & walls . ix wlid .~ newwl
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& deleteWallFromZones wl
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& insertWallInZones newwl
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where
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newwl = wl {_wlLine = wlline}
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moveWallIDToward :: Int -> Float -> (Point2,Point2) -> World -> World
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moveWallIDToward wlid speed ep w = moveWall wlid wl newwlline w
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where
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wl = _walls w IM.! wlid
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newwlline = mvPs speed ep (_wlLine wl)
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mvP :: Float -> Point2 -> Point2 -> Point2
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{-# INLINE mvP #-}
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mvP !speed !ep !p = mvPointTowardAtSpeed speed ep p
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mvPs :: Float -> (Point2,Point2) -> (Point2,Point2) -> (Point2,Point2)
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{-# INLINE mvPs #-}
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mvPs !speed (!ex,!ey) (!sx,!sy) = (mvP speed ex sx,mvP speed ey sy)
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