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{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE TemplateHaskell #-}
module Cafp.Game
( PlayerId
, Cards (..)
, Game (..)
, gameCards, gamePlayers, gameNextPlayerId
, newGame
, joinGame
, leaveGame
, processClientMessage
, gameViewForPlayer
) where
import Cafp.Messages
import Control.Lens (at, ix, over, to, (%~), (&), (.~), (^.),
(^?), _2)
import Control.Lens.TH (makeLenses, makePrisms)
import qualified Data.HashMap.Strict as HMS
import Data.Maybe (fromMaybe)
import Data.Text (Text)
import qualified Data.Text as T
import qualified Data.Vector as V
type PlayerId = Int
data Table
= TableProposing BlackCard (HMS.HashMap PlayerId WhiteCard)
deriving (Show)
data Game = Game
{ _gameCards :: !Cards
, _gamePlayers :: !(HMS.HashMap PlayerId Text)
, _gameTable :: !Table
, _gameNextPlayerId :: !Int
} deriving (Show)
makePrisms ''Table
makeLenses ''Game
newGame :: Cards -> Game
newGame cards = Game
{ _gameCards = cards
, _gamePlayers = HMS.empty
, _gameTable = TableProposing (BlackCard 0) HMS.empty
, _gameNextPlayerId = 1
}
joinGame :: Game -> (PlayerId, Game)
joinGame game =
let pid = game ^. gameNextPlayerId
name = "Player " <> T.pack (show pid) in
( pid
, game & gameNextPlayerId %~ succ & gamePlayers %~ HMS.insert pid name
)
leaveGame :: PlayerId -> Game -> Game
leaveGame pid = over gamePlayers $ HMS.delete pid
validWhiteCard :: Cards -> WhiteCard -> Bool
validWhiteCard cards (WhiteCard c) =
let len = V.length $ cardsWhite cards in c >= 0 && c < len
processClientMessage :: PlayerId -> ClientMessage -> Game -> Game
processClientMessage pid msg game = case msg of
ChangeMyName name ->
game & gamePlayers . ix pid .~ name
ProposeWhiteCards c
-- Bad card proposed.
| not $ validWhiteCard (game ^. gameCards) c -> game
-- Proposal already made.
| Just _ <- game ^? gameTable . _TableProposing . _2 . at pid -> game
-- TODO: Check that the card is in the hand of the player.
| otherwise ->
game & gameTable . _TableProposing . _2 . at pid .~ Just c
gameViewForPlayer :: PlayerId -> Game -> GameView
gameViewForPlayer self game =
let opponents = map snd . HMS.toList . HMS.delete self $ game ^. gamePlayers
name = fromMaybe "" $ game ^. gamePlayers . at self
table = case game ^. gameTable of
TableProposing black proposals ->
Proposing black (HMS.lookup self proposals) in
GameView
{ gameViewOpponents = opponents
, gameViewMyName = name
, gameViewTable = table
, gameViewHand = [WhiteCard x | x <- [0 .. 9]]
}
|
