lib/RPGEngine.hs

@@ -6,10 +6,10 @@ module RPGEngine
 ) where
 
 import Game
-import RenderGame
+import Render
 import Graphics.Gloss (
     Color(..)
-    , black
+    , white
     , play
     )
 
@@ -25,7 +25,7 @@ winOffsets = (0, 0)
 
 -- Game background color
 bgColor :: Color
-bgColor = black
+bgColor = white
 
 ----------------------------------------------------------------------
 

lib/data/Game.hs

@@ -2,21 +2,24 @@
 
 module Game
 ( Game(..)
-, initGame -- Initialize the game
+
+-- Initialize the game
+, initGame
 ) where
 
+import State
+
 ----------------------------- Constants ------------------------------
 
+-- TODO Add more
 data Game = Game {
-    -- TODO Add more
-    playerName :: String
+    -- Current state of the game
+    state :: State
 }
 
 ----------------------------------------------------------------------
 
--- Initialize the game
--- TODO Expand
 initGame :: Game
 initGame = Game { 
-    playerName = "Tibo"
+    state = defaultState
 }

lib/data/State.hs

@@ -0,0 +1,32 @@
+-- Describes the current state of the game, 
+-- e.g. Main menu, game, pause, win or lose
+-- Allows to easily go to a next state and change rendering accordingly
+
+module State 
+( State(..)
+-- Default state of the game, Menu
+, defaultState
+
+-- Get the next state based on the current state
+, nextState
+) where
+
+----------------------------- Constants ------------------------------
+
+-- Current state of the game.
+data State = Menu
+           | Playing
+           | Pause
+           | Win
+           | Lose
+
+----------------------------------------------------------------------
+
+defaultState :: State
+defaultState = Menu
+
+nextState :: State -> State
+nextState Menu = Playing
+nextState Playing = Pause
+nextState Pause = Playing
+nextState _ = Menu

lib/render/Render.hs

@@ -0,0 +1,47 @@
+-- Allows to render the played game
+
+module Render
+( 
+-- Initialize a window to play in
+initWindow
+
+-- Render the game
+, render
+) where
+
+import Game(Game(..))
+import State(State(..))
+import Graphics.Gloss
+
+----------------------------------------------------------------------
+
+initWindow :: String -> (Int, Int) -> (Int, Int) -> Display
+initWindow title dims offs = InWindow title dims offs
+
+render :: Game -> Picture
+render g@Game{ state = Menu    } = renderMenu g
+render g@Game{ state = Playing } = renderPlaying g
+render g@Game{ state = Pause   } = renderPause g
+render g@Game{ state = Win     } = renderWin g
+render g@Game{ state = Lose    } = renderLose g
+
+
+-- TODO
+renderMenu :: Game -> Picture
+renderMenu _ = text "Menu"
+
+-- TODO
+renderPlaying :: Game -> Picture
+renderPlaying _ = text "Playing"
+
+-- TODO
+renderPause :: Game -> Picture
+renderPause _ = text "Pause"
+
+-- TODO
+renderWin :: Game -> Picture
+renderWin _ = text "Win"
+
+-- TODO
+renderLose :: Game -> Picture
+renderLose _ = text "Lose"

lib/render/RenderGame.hs

@@ -1,19 +0,0 @@
--- Allows to render the played game
-
-module RenderGame
-( initWindow -- Initialize a window to play in
-, render     -- Rener the game
-) where
-
-import Game
-import Graphics.Gloss
-
-----------------------------------------------------------------------
-
--- Render the game
-render :: Game -> Picture
-render _ = Blank
-
--- Initialize a window to play in
-initWindow :: String -> (Int, Int) -> (Int, Int) -> Display
-initWindow title dims offs = InWindow title dims offs

rpg-engine.cabal

@@ -11,8 +11,8 @@ library
     gloss >= 1.11 && < 1.14, gloss-juicy >= 0.2.3
   exposed-modules:
     RPGEngine,
-    Game,
-    RenderGame
+    Game, State,
+    Render
 
 executable rpg-engine
   main-is: Main.hs