First commit

LICENSE

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+Copyright Author name here (c) 2021
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Author name here nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+# roguelike

roguelike.cabal

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+name:                roguelike
+version:             0.1.0.0
+-- synopsis:
+-- description:
+homepage:            https://github.com/githubuser/roguelike#readme
+license:             BSD3
+license-file:        LICENSE
+author:              Author name here
+maintainer:          example@example.com
+copyright:           2021 Author name here
+category:            Web
+build-type:          Simple
+cabal-version:       >=1.10
+extra-source-files:  README.md
+
+executable roguelike
+  ghc-options:         -threaded
+  hs-source-dirs:      src
+  main-is:             Main.hs
+  default-language:    Haskell2010
+  other-modules:       Direction,
+                       Dungeon,
+                       Player,
+                       Game,
+                       Rendering,
+                       Action
+  build-depends:       base >= 4.7 && < 5,
+                       vty,
+                       matrix,
+                       unordered-containers

src/Action.hs

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+module Action where
+
+import Graphics.Vty.Input
+import Control.Applicative
+import Data.Maybe
+
+import Direction
+
+data Action = Walk Direction
+            | ExitGame
+            | None
+
+bindings :: [(Event, Action)]
+bindings =
+  [ (EvKey KUp         [], Walk N)
+  , (EvKey KDown       [], Walk S)
+  , (EvKey KLeft       [], Walk W)
+  , (EvKey KRight      [], Walk E)
+  , (EvKey (KChar 'q') [], ExitGame)
+  ]
+
+eventToAction :: Event -> Action
+eventToAction e = fromJust $ lookup e bindings <|> Just None

src/Direction.hs

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+module Direction where
+
+data Direction = N | S | W | E

src/Dungeon.hs

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+module Dungeon where
+
+import Data.Matrix
+
+data Cell = Solid | Empty
+
+instance Show Cell where
+  show Solid = "#"
+  show Empty = "."
+
+newtype Dungeon = Dungeon (Matrix Cell)
+
+instance Show Dungeon where
+  show (Dungeon m) = unlines . map (concatMap show) $ toLists m
+
+makeDungeon :: Int -> Int -> Dungeon
+makeDungeon w h = Dungeon $ matrix h w $ const Empty
+
+dungeonToLists :: Dungeon -> [[Cell]]
+dungeonToLists (Dungeon m) = toLists m

src/Game.hs

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+module Game where
+
+import Dungeon
+import Player
+import Direction
+import Action
+
+data Game = Game
+  { getDungeon :: Dungeon
+  , getPlayer :: Player
+  }
+
+newGame :: Game
+newGame = Game (makeDungeon 30 10) (Player (1,1))
+
+runAction :: Action -> Game -> Maybe Game
+runAction (Walk N) (Game d (Player (x,y))) = Just $ Game d (Player (x,y-1))
+runAction (Walk S) (Game d (Player (x,y))) = Just $ Game d (Player (x,y+1))
+runAction (Walk W) (Game d (Player (x,y))) = Just $ Game d (Player (x-1,y))
+runAction (Walk E) (Game d (Player (x,y))) = Just $ Game d (Player (x+1,y))
+runAction None g = Just g
+runAction ExitGame _ = Nothing

src/Main.hs

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+module Main where
+
+import Graphics.Vty
+
+import Game
+import Rendering
+import Action
+
+main :: IO ()
+main = do
+    cfg <- standardIOConfig
+    vty <- mkVty cfg
+    loop vty newGame
+    shutdown vty
+    where loop vty game = do
+            update vty $ renderGame game
+            e <- nextEvent vty
+            let action = eventToAction e
+                nGame = runAction action game
+            case nGame of
+              Nothing -> return ()
+              Just ng -> loop vty ng

src/Player.hs

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+module Player where
+
+newtype Player = Player (Int, Int)

src/Rendering.hs

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+module Rendering where
+
+import Graphics.Vty
+import Dungeon
+import Game
+import Player
+
+renderGame :: Game -> Picture
+renderGame g = picForLayers
+  [ playerToImg (getPlayer g)
+  , dungeonToImg (getDungeon g)
+  ]
+
+dungeonToImg :: Dungeon -> Image
+dungeonToImg = vertCat . map (string defAttr . concatMap show) . dungeonToLists
+
+playerToImg :: Player -> Image
+playerToImg (Player (x,y)) = translateX x . translateY y $ char defAttr '@'

stack.yaml

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+# This file was automatically generated by 'stack init'
+#
+# Some commonly used options have been documented as comments in this file.
+# For advanced use and comprehensive documentation of the format, please see:
+# https://docs.haskellstack.org/en/stable/yaml_configuration/
+
+# Resolver to choose a 'specific' stackage snapshot or a compiler version.
+# A snapshot resolver dictates the compiler version and the set of packages
+# to be used for project dependencies. For example:
+#
+# resolver: lts-3.5
+# resolver: nightly-2015-09-21
+# resolver: ghc-7.10.2
+#
+# The location of a snapshot can be provided as a file or url. Stack assumes
+# a snapshot provided as a file might change, whereas a url resource does not.
+#
+# resolver: ./custom-snapshot.yaml
+# resolver: https://example.com/snapshots/2018-01-01.yaml
+resolver: lts-17.2
+
+# User packages to be built.
+# Various formats can be used as shown in the example below.
+#
+# packages:
+# - some-directory
+# - https://example.com/foo/bar/baz-0.0.2.tar.gz
+#   subdirs:
+#   - auto-update
+#   - wai
+packages:
+- .
+# Dependency packages to be pulled from upstream that are not in the resolver.
+# These entries can reference officially published versions as well as
+# forks / in-progress versions pinned to a git hash. For example:
+#
+# extra-deps:
+# - acme-missiles-0.3
+# - git: https://github.com/commercialhaskell/stack.git
+#   commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+#
+# extra-deps: []
+
+# Override default flag values for local packages and extra-deps
+# flags: {}
+
+# Extra package databases containing global packages
+# extra-package-dbs: []
+
+# Control whether we use the GHC we find on the path
+# system-ghc: true
+#
+# Require a specific version of stack, using version ranges
+# require-stack-version: -any # Default
+# require-stack-version: ">=2.3"
+#
+# Override the architecture used by stack, especially useful on Windows
+# arch: i386
+# arch: x86_64
+#
+# Extra directories used by stack for building
+# extra-include-dirs: [/path/to/dir]
+# extra-lib-dirs: [/path/to/dir]
+#
+# Allow a newer minor version of GHC than the snapshot specifies
+# compiler-check: newer-minor