139 lines
4.2 KiB
Haskell
139 lines
4.2 KiB
Haskell
module Rendering where
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import Data.Array
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import Data.Map (Map)
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import Data.Map qualified as Map
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import Data.Set qualified as Set
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import Graphics.Vty
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import Model
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unit :: Attr -> Int -> Char -> Image
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unit a scale x =
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vertCat (replicate scale (string a (replicate (2*scale) x)))
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button :: Attr -> Int -> Image
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button a 1 = string a "[]"
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button a n = vertCat $
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string a ('┌' : replicate (2*n-2) '─' ++ "┐") :
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replicate (n-2) (string a ('│' : replicate (2*n-2) '░' ++ "│")) ++
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[string a ('└' : replicate (2*n-2) '─' ++ "┘")]
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home :: Attr -> Int -> Image
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home a 1 = string a "<>"
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home a n = vertCat $
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string a ('╔' : replicate (2*n-2) '═' ++ "╗") :
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replicate (n-2) (string a ('║' : replicate (2*n-2) '░' ++ "║")) ++
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[string a ('╚' : replicate (2*n-2) '═' ++ "╝")]
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renderCell :: World -> Map Location Char -> Char -> Box -> Int -> Int -> Int -> Image
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renderCell world locMap name box y x scale =
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if boxWalls world box ! (y,x) then unit (boxColor box) scale wallChar
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else case Map.lookup (Location name' y x) locMap of
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Just n ->
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if scale == 1
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then unit (boxColor (worldBoxes world Map.! n)) scale n
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else renderBox world locMap (worldBoxes world Map.! n) n
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(scale `div` boxSize world box)
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Nothing
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| Set.member loc (worldButtons world) -> button (boxColor box) scale
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| loc == worldHome world -> home (boxColor box) scale
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| otherwise -> unit (boxColor box) scale '░'
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where
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loc = Location name' y x
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name' =
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case boxType box of
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Original{} -> name
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Link c -> c
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wallChar =
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case boxType box of
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Original{} -> '▓'
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Link{} -> '▒'
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renderBox :: World -> Map Location Char -> Box -> Char -> Int -> Image
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renderBox world locMap box name scale =
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vertCat
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[
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horizCat
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[
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renderCell world locMap name box y x scale
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| x <- [xlo .. xhi]
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]
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| let ((ylo,xlo),(yhi,xhi)) = bounds (boxWalls world box)
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, y <- [ylo .. yhi]
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]
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drawNestedWorld :: World -> Image
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drawNestedWorld world =
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-- (3*81) + 81 + (3*81)
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cropTop (81 + 2*border) $
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cropLeft (2*(81 + 2*border)) $
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cropBottom (2*81 + border) $
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cropRight (2*(2*81 + border)) $
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vertCat [
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horizCat [
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case stackedLoc world locMap (Location name1 y_ x_) of
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Nothing -> unit (withForeColor defAttr black) 81 '?'
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Just (Location n y x) ->
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let box = worldBoxes world Map.! n in
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renderCell world locMap n box y x 81
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| x_ <- [x1-1 .. x1+1]
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]
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| y_ <- [y1-1 .. y1+1]
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]
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where
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border = 20
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locMap = Map.fromList [(boxLocation loc, n) | (n, loc) <- Map.toList (worldBoxes world)]
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-- name1 is the box the player is standing in
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Location name0 _ _ = boxLocation (worldBoxes world Map.! worldMe world)
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Location name1 y1 x1 = boxLocation (worldBoxes world Map.! name0)
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stackedLoc :: World -> Map Location Char -> Location -> Maybe Location
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stackedLoc world locMap = go Set.empty
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where
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go visited loc | Set.member loc visited = Nothing
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go visited loc@(Location b y x) =
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do box <- Map.lookup b (worldBoxes world)
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let bnds@((ylo,xlo),(yhi,xhi)) = bounds (boxWalls world box)
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if inRange bnds (y, x)
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then Just loc
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else
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let dx = overflow (xlo,xhi) x
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dy = overflow (ylo,yhi) y
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Location parent py px = boxLocation box
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in fixup world locMap dy dx y x <$> go (Set.insert loc visited) (Location parent (py+dy) (px+dx))
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overflow :: (Int, Int) -> Int -> Int
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overflow (lo,hi) x
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| x < lo = x - lo
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| x > hi = x - hi
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| otherwise = 0
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fixup :: World ->
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Map Location Char ->
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Int ->
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Int ->
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Int ->
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Int ->
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Location ->
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Location
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fixup world locMap dy dx py px loc =
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case Map.lookup loc locMap of
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Nothing -> loc
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Just name -> Location name (fixup1 ylo yhi dy py) (fixup1 xlo xhi dx px)
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where
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((ylo,xlo),(yhi,xhi)) = bounds (boxWalls world (worldBoxes world Map.! name))
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fixup1 :: Int -> Int -> Int -> Int -> Int
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fixup1 _ _ 0 i = i
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fixup1 _ hi (-1) _ = hi
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fixup1 lo _ 1 _ = lo
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fixup1 _ _ _ _ = error "fixup1: bad delta" |