Rudimentary Game.advanceGame

2 files changed, 14 insertions, 4 deletions

diff --git a/Game.hs b/Game.hs
index 6912ea4..71c6298 100644
--- a/Game.hs
+++ b/Game.hs
@@ -17,6 +17,14 @@ data Game = Game { players :: [Player]
                  , discardPile :: [Card]
                  }
 
+-- | Advance game state.
+advanceGame :: Game -> IO Game
+advanceGame game@(Game plyrs pidx att dir stock disc) = do
+    cardToPlay <- prompt game
+    let newPidx = (pidx + 1) `mod` (length plyrs)
+    advanceGame (Game plyrs newPidx att dir stock disc)
+
+-- | Prompt player to play a card (or draw card and skip turn).
 prompt :: Game -> IO (Maybe Card)
 prompt game@(Game plyrs pidx att _ _ _) = do
     let player = plyrs !! pidx
diff --git a/Main.hs b/Main.hs
index c18b780..ab0d00e 100644
--- a/Main.hs
+++ b/Main.hs
@@ -10,6 +10,7 @@ import Game (Game(..),
              discardPile,
              prompt,
              dealCards,
+             advanceGame,
             )
 import Player (Player(..))
 import qualified Player as P
@@ -18,8 +19,8 @@ import qualified Card as C
 
 main :: IO ()
 main = do
-    gen <- getStdGen
-    let stock = shuffle gen $ fullDecks 2
+    shuffleGen <- getStdGen
+    let stock = shuffle shuffleGen $ fullDecks 2
     let discard = []
     let defaultPlayers = [ Player "Alice" 0 []
                          , Player "Bob"   0 []
@@ -32,5 +33,6 @@ main = do
                     , stockPile   = stock
                     , discardPile = discard
                     }
-    card <- prompt $ dealCards 6 game
-    print card
+
+    advanceGame $ dealCards 6 game
+    print ()