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85 lines
4.0 KiB
85 lines
4.0 KiB
module Strategy0(Strategy0) where
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import qualified Data.PQueue.Prio.Max as PQ
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import System.Random(StdGen)
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import Data.Maybe (isJust)
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import Datatypes
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import Datatypes.Game (Command(..))
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import qualified Datatypes.Unit as Unit
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import qualified Datatypes.Game as Game
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import VM
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import StrategyManager
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commandsList :: [Command]
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commandsList = [MoveSE, MoveSW, MoveW, MoveE, RotateClockwise, RotateCounterclockwise]
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type Queue = PQ.MaxPQueue (Int, Int, Int) Game
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data Strategy0 = Strategy0 (Queue, [Game])
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instance Strategy Strategy0 where
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initst = strategy0initst
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advance = strategy0advance
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getbest = strategy0getbest
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strategy0initst :: Game -> StdGen -> Maybe [Command] -> Strategy0
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strategy0initst game _ _ = (Strategy0 (firstQueue, firstList)) where
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firstQueue = PQ.singleton (fullScore game, -(length $ Game.units game), snd . Unit.pivot . head . Game.units $ game) game
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firstList = []
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strategy0advance :: Strategy0 -> Either Strategy0 ([Command],Int)
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strategy0advance (Strategy0 (queue,completed)) =
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let candidates = (tryPowerPhrases game) ++ (map (step game) commandsList)
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(newQueue, newCompleted) = updateCollections candidates remQueue (game:completed)
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in Left (Strategy0 (newQueue, newCompleted))
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where
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((score, game), remQueue) = PQ.deleteFindMax queue
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updateCollections [] q l = (q, l)
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updateCollections ((g, n):rs) q l = case n of
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OK -> updateCollections rs (pushToQueue q g) l
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Lock _ -> updateCollections rs (pushToQueue q g) l
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GameOver -> updateCollections rs q (pushToList l g)
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_ -> updateCollections rs q l
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pushToQueue q x = PQ.insert (fullScore x, -(length $ Game.units x), snd . Unit.pivot . head . Game.units $ x) x q
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pushToList c x = x : c
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strategy0getbest :: Strategy0 -> ([Command], Int)
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strategy0getbest (Strategy0 (incomplete,completed)) =
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let (_, bestIncomplete) = PQ.findMax incomplete
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resultGame = findListMax (bestIncomplete:completed)
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in (reverse (Game.history resultGame), fullScore resultGame)
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fullScore :: Game -> Int
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fullScore game = Game.score game + (Game.powerCounterToScore $ Game.powerCounter game)
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findListMax :: [Game] -> Game
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findListMax (x:xs) = innerFindListMax x xs where
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innerFindListMax currentMax [] = currentMax
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innerFindListMax currentMax (y:ys) = innerFindListMax (if (fullScore currentMax) > (fullScore y) then currentMax else y) ys
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partition :: (a -> Bool) -> [a] -> ([a], [a])
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partition p items = innerPartition items [] [] where
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innerPartition [] ts fs = (ts, fs)
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innerPartition (x:xs) ts fs = if p x
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then innerPartition xs (x:ts) fs
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else innerPartition xs ts (x:fs)
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tryPowerPhrases :: Game -> [(Game, Notes)]
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tryPowerPhrases game = validResults where
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allResults = map (innerExpand (game, OK)) Game.powerPhrasesAsCommands
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validResults = map (\(Just x) -> x) $ filter (\x -> isJust x) allResults
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innerExpand (game, note) [] = Just (game, note)
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innerExpand (game, note) [p] = let nn@(newGame, newNote) = step game p
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in case newNote of
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OK -> Just nn
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Lock _ -> Just nn
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GameOver -> Just nn
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_ -> Nothing
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innerExpand (game, note) (p:ps) = let nn@(newGame, newNote) = step game p
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in case newNote of
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OK -> innerExpand nn ps
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Lock _ -> innerExpand nn ps
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_ -> Nothing
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