Day 11 Part 1
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module Intcode
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( TuringMachine(TM, tape, pointer, pointerOffset, output, input,
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state)
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, step
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, tapePreprocess
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, TMOutState(Continue, AwaitInput, Halt)
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, execSteps
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) where
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import Control.DeepSeq as DeepSeq
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import Data.Char
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import Data.List as L
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import Debug.Trace
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import Data.Maybe
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import Data.Vector as V hiding
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( (++)
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, concatMap
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, elem
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, head
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, last
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, length
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, map
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, reverse
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, splitAt
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)
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import qualified Data.Vector as V ((++), last)
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data TMOutState
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= Continue
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| AwaitInput
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| Halt
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deriving (Enum, Eq, Show)
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data Mode
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= Position
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| Immediate
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| Relative
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deriving (Enum, Eq, Show)
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data TuringMachine =
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TM
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{ tape :: Vector Integer
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, pointer :: Integer
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, pointerOffset :: Integer
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, output :: [Integer]
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, input :: Maybe Integer
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, state :: TMOutState
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}
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deriving (Show)
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tapePreprocess :: Vector Integer -> Vector Integer
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tapePreprocess t = (V.++) t $ V.replicate 500 0
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opLength :: Integer -> Integer
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opLength x
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| n `elem` "1278" = 4
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| n `elem` "56" = 3
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| n `elem` "349" = 2
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| otherwise = 1
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where
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n = last $ show x
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parseModes :: String -> [Mode]
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parseModes m = L.replicate (3 - length l) Position ++ l
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where
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l = map (toEnum . digitToInt) m
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paramChange ::
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[Mode] -> Integer -> Vector Integer -> Vector Integer -> Vector Integer
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paramChange m rbase opvec t = imap f (V.tail opvec)
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where
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f i a =
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case m !! i of
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Immediate -> a
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Position -> t ! fromInteger a
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Relative -> t ! fromInteger (a + rbase)
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getOpModes :: Vector Integer -> (String, [Mode])
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getOpModes opvec = (op_dedup, parsed_modes)
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where
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(op, modes) = splitAt 2 $ reverse $ show $ opvec ! 0
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parsed_modes = reverse $ parseModes $ reverse modes
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op_dedup =
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if last op == '0'
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then [head op]
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else op
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step :: TuringMachine -> TuringMachine
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step tm =
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case op of
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"1" -> tmBinop (+)
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"2" -> tmBinop (*)
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"3" -> if isJust (input tm) then (getNewTM (fromJust $ input tm)){input = Nothing} else tm {state = AwaitInput}
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"4" -> tmn {output = V.last params : output tm}
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"5" ->
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tm
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{ pointer =
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if params ! 0 /= 0
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then params ! 1
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else pNew
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}
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"6" ->
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tm
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{ pointer =
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if params ! 0 == 0
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then params ! 1
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else pNew
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}
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"7" ->
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tmBinop
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(\x y ->
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if x < y
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then 1
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else 0)
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"8" ->
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tmBinop
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(\x y ->
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if x == y
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then 1
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else 0)
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"9" -> tmn {pointerOffset = pointerOffset tm + (params ! 0)}
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"99" -> tm {state = Halt}
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_ -> error "Illegal Opcode."
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where
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pNew = pointer tm + opLength (tape tm ! fromInteger (pointer tm))
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tmn = tm {pointer = pNew}
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opvec =
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slice
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(fromInteger (pointer tm))
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(fromInteger (pNew - pointer tm))
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(tape tm)
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(op, m) = getOpModes opvec
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params = paramChange m (pointerOffset tm) opvec (tape tm)
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tmBinop x = getNewTM ((params ! 0) `x` (params ! 1))
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{-without the following DeepSeq call, thunks build up eternally and
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the vectors won’t be garbage collected: >4GB RAM usage, god knows
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how much with larger tapes (my laptop crashed), now it’s a cozy ~20mB-}
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getNewTM x =
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tmn {tape = DeepSeq.force (tape tm // [(target, x)]), state = Continue}
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target =
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fromInteger $
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case m !! (length params - 1) of
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Relative -> V.last opvec + pointerOffset tm
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_ -> V.last opvec
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execSteps :: TuringMachine -> TuringMachine
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execSteps tm =
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case state tmNew of
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Continue -> execSteps tmNew
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_ -> tmNew
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where
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tmNew = step tm
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@ -0,0 +1,54 @@
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module Main where
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import Intcode
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import Data.List.Split
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import qualified Data.Map.Strict as M
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import qualified Data.Vector as V
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import Linear.V2
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import Debug.Trace
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data RoboState =
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RoboState
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{ hull :: M.Map (V2 Int) Integer
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, position :: V2 Int
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, direction :: V2 Int
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} deriving Show
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main :: IO ()
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main = do
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content <- readFile "input"
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let program = V.fromList $ concatMap (map read . splitOn ",") (lines content)
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let run x =
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runIntcode
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(TM
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{ tape = tapePreprocess program
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, pointer = 0
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, pointerOffset = 0
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, output = []
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, input = Just 0
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, state = Continue
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}, RoboState {hull = M.empty, position = V2 0 0, direction = V2 0 1 })
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print "hue"
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print $ length $ hull $ snd $ run 0
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-- concat
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-- ["Part 1: " ++ show a ++ ", Part 2: " ++ show b | a <- out1, b <- out2]
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runIntcode :: (TuringMachine, RoboState) -> (TuringMachine, RoboState)
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runIntcode (tm,rb) =
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case state tmNew of
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Continue -> runIntcode (tmNew,rb)
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AwaitInput -> runIntcode $ updateState (tmNew,rb)
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_ -> (tmNew,rb)
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where
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tmNew = execSteps tm
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updateState :: (TuringMachine, RoboState) -> (TuringMachine, RoboState)
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updateState (tm, rb) = (tmNew, rbNew)
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where hullNew = M.insert (position rb) (output tm !! 1) (hull rb)
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dirNew = if output tm !! 0 == 0
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then perp $ direction rb
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else iterate perp (direction rb) !! 3
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posNew = (position rb + dirNew)
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floorNext = M.findWithDefault 0 posNew (hull rb)
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rbNew = rb{hull = hullNew, position = posNew, direction = dirNew}
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tmNew = tm{input = Just floorNext, output = []}
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@ -0,0 +1 @@
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3,8,1005,8,319,1106,0,11,0,0,0,104,1,104,0,3,8,1002,8,-1,10,101,1,10,10,4,10,108,0,8,10,4,10,1002,8,1,28,3,8,1002,8,-1,10,1001,10,1,10,4,10,1008,8,1,10,4,10,102,1,8,51,2,1008,18,10,3,8,1002,8,-1,10,1001,10,1,10,4,10,1008,8,1,10,4,10,101,0,8,77,1,1006,8,10,1006,0,88,3,8,1002,8,-1,10,1001,10,1,10,4,10,1008,8,1,10,4,10,1002,8,1,106,1006,0,47,2,5,0,10,3,8,102,-1,8,10,101,1,10,10,4,10,1008,8,0,10,4,10,101,0,8,135,2,105,3,10,2,1101,6,10,3,8,102,-1,8,10,101,1,10,10,4,10,1008,8,0,10,4,10,1002,8,1,165,3,8,102,-1,8,10,101,1,10,10,4,10,108,0,8,10,4,10,1002,8,1,186,1,1009,11,10,1,9,3,10,2,1003,10,10,1,107,11,10,3,8,1002,8,-1,10,101,1,10,10,4,10,1008,8,1,10,4,10,1002,8,1,225,1006,0,25,1,1009,14,10,1,1008,3,10,3,8,102,-1,8,10,101,1,10,10,4,10,108,1,8,10,4,10,1002,8,1,257,1,1006,2,10,3,8,1002,8,-1,10,1001,10,1,10,4,10,1008,8,0,10,4,10,101,0,8,284,2,1004,7,10,1006,0,41,2,1106,17,10,1,104,3,10,101,1,9,9,1007,9,919,10,1005,10,15,99,109,641,104,0,104,1,21101,0,937108545948,1,21102,1,336,0,1105,1,440,21102,1,386577203612,1,21102,347,1,0,1105,1,440,3,10,104,0,104,1,3,10,104,0,104,0,3,10,104,0,104,1,3,10,104,0,104,1,3,10,104,0,104,0,3,10,104,0,104,1,21102,1,21478178819,1,21102,1,394,0,1106,0,440,21102,21477985447,1,1,21101,405,0,0,1105,1,440,3,10,104,0,104,0,3,10,104,0,104,0,21101,984458351460,0,1,21101,428,0,0,1106,0,440,21101,709048034148,0,1,21102,439,1,0,1106,0,440,99,109,2,21201,-1,0,1,21101,0,40,2,21101,471,0,3,21102,461,1,0,1105,1,504,109,-2,2106,0,0,0,1,0,0,1,109,2,3,10,204,-1,1001,466,467,482,4,0,1001,466,1,466,108,4,466,10,1006,10,498,1101,0,0,466,109,-2,2105,1,0,0,109,4,2101,0,-1,503,1207,-3,0,10,1006,10,521,21101,0,0,-3,22102,1,-3,1,21201,-2,0,2,21102,1,1,3,21102,540,1,0,1106,0,545,109,-4,2105,1,0,109,5,1207,-3,1,10,1006,10,568,2207,-4,-2,10,1006,10,568,22101,0,-4,-4,1105,1,636,21201,-4,0,1,21201,-3,-1,2,21202,-2,2,3,21102,587,1,0,1106,0,545,21202,1,1,-4,21102,1,1,-1,2207,-4,-2,10,1006,10,606,21101,0,0,-1,22202,-2,-1,-2,2107,0,-3,10,1006,10,628,22101,0,-1,1,21101,628,0,0,105,1,503,21202,-2,-1,-2,22201,-4,-2,-4,109,-5,2105,1,0
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