Forest fire: Difference between revisions
Content deleted Content added
m →{{header|Haskell}}: Dropped one (now redundant) import. |
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=={{header|Haskell}}== |
=={{header|Haskell}}== |
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<lang haskell>import |
<lang haskell>import Control.Monad (replicateM, unless) |
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import Data.List (tails, transpose) |
import Data.List (tails, transpose) |
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import |
import System.Random (randomRIO) |
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data Cell |
data Cell |
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| Fire |
| Fire |
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deriving (Eq) |
deriving (Eq) |
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instance Show Cell where |
instance Show Cell where |
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show Empty = " " |
show Empty = " " |
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show Tree = "T" |
show Tree = "T" |
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show Fire = "$" |
show Fire = "$" |
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randomCell :: IO Cell |
randomCell :: IO Cell |
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randomCell = fmap ([Empty, Tree] !!) (randomRIO (0, 1) :: IO Int) |
randomCell = fmap ([Empty, Tree] !!) (randomRIO (0, 1) :: IO Int) |
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randomChance :: IO Double |
randomChance :: IO Double |
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randomChance = randomRIO (0, 1.0) :: IO Double |
randomChance = randomRIO (0, 1.0) :: IO Double |
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rim :: a -> [[a]] -> [[a]] |
rim :: a -> [[a]] -> [[a]] |
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rim b = fmap (fb b) . (fb =<< rb) |
rim b = fmap (fb b) . (fb =<< rb) |
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where |
where |
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fb = |
fb = (.) <$> (:) <*> (flip (++) . return) |
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rb = fst . unzip . zip (repeat b) . head |
rb = fst . unzip . zip (repeat b) . head |
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take3x3 :: [[a]] -> [[[a]]] |
take3x3 :: [[a]] -> [[[a]]] |
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take3x3 = concatMap (transpose . fmap take3) . take3 |
take3x3 = concatMap (transpose . fmap take3) . take3 |
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where |
where |
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take3 = init . init . takeWhile (not . null) . fmap (take 3) . tails |
take3 = init . init . takeWhile (not . null) . fmap (take 3) . tails |
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list2Mat :: Int -> [a] -> [[a]] |
list2Mat :: Int -> [a] -> [[a]] |
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list2Mat n = takeWhile (not . null) . fmap (take n) . iterate (drop n) |
list2Mat n = takeWhile (not . null) . fmap (take n) . iterate (drop n) |
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evolveForest :: Int -> Int -> Int -> IO () |
evolveForest :: Int -> Int -> Int -> IO () |
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evolveForest m n k = do |
evolveForest m n k = do |
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nfs >>= evolve (i + 1) |
nfs >>= evolve (i + 1) |
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evolve 1 fs |
evolve 1 fs |
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main :: IO () |
main :: IO () |
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main = evolveForest 6 50 3</lang> |
main = evolveForest 6 50 3</lang> |
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