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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.

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# roguelike

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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

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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

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

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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

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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

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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

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

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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 '@'

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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