Created
December 7, 2009 06:52
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| data CellState = Alive | Dead deriving (Eq, Show) | |
| type Time = Integer | |
| -- Status of a cell at a time t | |
| cell :: Int -> Int -> Time -> CellState | |
| -- Initial Board setup | |
| cell 0 (-1) 0 = Alive | |
| cell 0 0 0 = Alive | |
| cell 0 1 0 = Alive | |
| cell _ _ 0 = Dead | |
| -- General rule | |
| cell x y t = state (cell x y (t - 1)) (neighbors x y (t - 1)) | |
| -- Survival Rules | |
| state :: CellState -> Int -> CellState | |
| state Alive n | |
| | n < 2 = Dead | |
| | n > 3 = Dead | |
| | otherwise = Alive | |
| state Dead n | |
| | n == 3 = Alive | |
| | otherwise = Dead | |
| -- Count my neighbors | |
| neighbors :: Int -> Int -> Time -> Int | |
| neighbors x y t = length $ filter (\(x', y') -> cell x' y' t == Alive) border | |
| where border = [ (x + dx, y + dy) | dx <- [-1..1], dy <- [-1..1], not (dx == 0 && dy == 0) ] | |
| asBoardTile :: CellState -> Char | |
| asBoardTile cellstate | |
| | cellstate == Alive = 'O' | |
| | cellstate == Dead = '-' | |
| board :: Int -> Int -> Int -> Int -> Time -> [[CellState]] | |
| board top right bottom left time = [[ cell x y time | x <- [left..right] ] | y <- [bottom..top] ] | |
| bigBoard :: Time -> [[CellState]] | |
| bigBoard = board 5 5 (-5) (-5) | |
| bigTextyBoard :: Time -> String | |
| bigTextyBoard t = foldr (\val acc -> val ++ "\n" ++ acc) "" [map asBoardTile row | row <- bigBoard t] | |
| main = putStr $ foldr (\val acc -> val ++ "\027[2J\n" ++ acc) "" [ bigTextyBoard t | t <- [0..10] ] |
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| Clio:death kev$ ./death | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| -----O----- | |
| -----O----- | |
| -----O----- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----OOO---- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| -----O----- | |
| -----O----- | |
| -----O----- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----OOO---- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| -----O----- | |
| -----O----- | |
| -----O----- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----OOO---- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| -----O----- | |
| -----O----- | |
| -----O----- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ----------- | |
| ..... # really slow here |
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