init

.gitignore

@@ -0,0 +1,8 @@
+.cabal-sandbox
+cabal.sandbox.config
+dist
+*.hp
+*.ps
+*.aux
+.*.swp
+*.blend1

ChangeLog.md

@@ -0,0 +1,6 @@
+# Revision history for hw
+
+## 0.0.0.0  -- 2017-09-09
+
+* First version. Released on an unsuspecting world. Loads obj files with UVs
+	and displays them.

LICENSE

@@ -0,0 +1,674 @@
+              GNU GENERAL PUBLIC LICENSE
+                Version 3, 29 June 2007
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+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+              END OF TERMS AND CONDITIONS
+
+     How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

Setup.hs

@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain

assets/ships/jaeger/jaeger.mtl

@@ -0,0 +1,13 @@
+# Blender MTL File: 'jaeger.blend'
+# Material Count: 1
+
+newmtl Material_jaeger.texture.tga
+Ns 92.156863
+Ka 1.000000 1.000000 1.000000
+Kd 0.512000 0.512000 0.512000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 2
+map_Kd jaeger.texture.tga

assets/ships/marksman/marksman.mtl

@@ -0,0 +1,24 @@
+# Blender MTL File: 'marksman.blend'
+# Material Count: 2
+
+newmtl Material.001
+Ns 245.098039
+Ka 1.000000 1.000000 1.000000
+Kd 0.640000 0.640000 0.640000
+Ks 0.615139 0.615139 0.615139
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 2
+map_Kd marksman.texture.tga
+
+newmtl Material_marksman.texture.
+Ns 245.098039
+Ka 1.000000 1.000000 1.000000
+Kd 0.640000 0.640000 0.640000
+Ks 0.615139 0.615139 0.615139
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 2
+map_Kd marksman.texture.tga

hw.cabal

@@ -0,0 +1,36 @@
+-- Initial hw.cabal generated by cabal init.  For further documentation, 
+-- see http://haskell.org/cabal/users-guide/
+
+name:                hw
+version:             0.0.0.0
+-- synopsis:            
+-- description:         
+license:             GPL-3
+license-file:        LICENSE
+author:              nek0
+maintainer:          nek0@chelnok.de
+-- copyright:           
+category:            Game
+build-type:          Simple
+extra-source-files:  ChangeLog.md
+cabal-version:       >=1.10
+
+executable hw
+  main-is:             Main.hs
+  other-modules:       Util
+  -- other-extensions:    
+  default-extensions:  OverloadedStrings
+  build-depends:       base >=4.9 && <4.10
+                     , affection
+                     , sdl2
+                     , linear
+                     , bytestring
+                     , OpenGL
+                     , OpenGLRaw
+                     , GLUtil
+                     , random
+                     , vector
+                     , wavefront
+  hs-source-dirs:      src
+  default-language:    Haskell2010
+  ghc-options:         -Wall

notes/gamemodes.braindump

@@ -0,0 +1,7 @@
+# singleplayer
+
+mode for research
+
+# multiplayer
+
+mode for rexource gathering

notes/shipbuilding.braindump

@@ -0,0 +1,8 @@
+# Shipbuilding
+
+Can be made before multiplayer sessions (recommended) but also
+in-game (but time does not stop).
+
+Ships are combined from predefined components (core, weaponry, hangars, ...)
+
+ships are shared like in spore

notes/techtree.braindump

@@ -0,0 +1,8 @@
+# Techtree
+
+Not a tree per se
+
+research only in single player mode
+
+Gather resources in multiplayer mode to spend them on for (very expensive)
+research in singleplayer mode

src/Main.hs

@@ -0,0 +1,213 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module Main where
+
+import Affection
+
+import SDL (($=))
+import qualified SDL
+
+import qualified Graphics.Rendering.OpenGL as GL
+import qualified Graphics.GLUtil as GLU
+import qualified Graphics.GLUtil.Camera3D as GLU (projectionMatrix)
+
+import Control.Monad (when)
+
+import qualified Data.ByteString as BS
+
+import Codec.Wavefront
+
+import Linear as L
+
+import System.Random (randomRIO)
+
+import Foreign
+
+import Util
+
+import Debug.Trace
+
+main :: IO ()
+main =
+  withAffection AffectionConfig
+    { initComponents = All
+    , windowTitle    = "hw"
+    , windowConfig   = SDL.defaultWindow
+      { windowInitialSize = SDL.V2 800 600
+      , windowOpenGL = Just SDL.defaultOpenGL
+        { SDL.glProfile = SDL.Core SDL.Normal 3 2
+        }
+      }
+    , initScreenMode = SDL.Windowed
+    , preLoop = return ()
+    , eventLoop = handle
+    , updateLoop = update
+    , drawLoop = draw
+    , loadState = load
+    , cleanUp = const (return ())
+    , canvasSize = Nothing
+    }
+
+data StateData = StateData
+  { ship :: (GL.VertexArrayObject, Int)
+  , proj :: M44 Float
+  , view :: M44 Float
+  , model :: V3 Float
+  , program :: GLU.ShaderProgram
+  , mrot :: Quaternion Float
+  }
+
+load :: IO StateData
+load = do
+  GL.depthFunc $= Just GL.Less
+  eobj <- fromFile "assets/ships/jaeger/jaeger.obj"
+  let obj = case eobj of
+        Right o -> o
+        Left err -> error err
+  -- (ptr, len) <- objLocsToPtr obj
+  -- (tptr, tlen) <- objUVsToPtr obj
+  let lobj = loadObj obj
+
+  shipBO <- GL.genObjectName
+  GL.bindVertexArrayObject $= Just shipBO
+
+  verts <- GL.genObjectName
+  GL.bindBuffer GL.ArrayBuffer $= Just verts
+  withArray (loTriangles lobj) $ \ptr ->
+    GL.bufferData GL.ArrayBuffer $=
+      ( fromIntegral $ length (loTriangles lobj) * 3 * sizeOf (0 :: Double)
+      , ptr
+      , GL.StaticDraw
+      )
+  GL.vertexAttribPointer (GL.AttribLocation 0) $=
+    ( GL.ToFloat
+    , GL.VertexArrayDescriptor 4 GL.Float 0 (plusPtr nullPtr 0)
+    )
+  GL.vertexAttribArray (GL.AttribLocation 0) $= GL.Enabled
+
+  texture <- GL.genObjectName
+  GL.bindBuffer GL.ArrayBuffer $= Just texture
+  maybe (return ()) (\a -> withArray a $ \ptr ->
+    GL.bufferData GL.ArrayBuffer $=
+      ( fromIntegral $ length a * 2 * sizeOf (0 :: Double)
+      , ptr
+      , GL.StaticDraw
+      )) (loTexTri lobj)
+  GL.vertexAttribPointer (GL.AttribLocation 1) $=
+    ( GL.ToFloat
+    , GL.VertexArrayDescriptor 2 GL.Float 0 (plusPtr nullPtr 0)
+    )
+  GL.vertexAttribArray (GL.AttribLocation 1) $= GL.Enabled
+
+  GL.texture GL.Texture2D $= GL.Enabled
+  GL.activeTexture $= GL.TextureUnit 0
+  t <- loadTex "assets/ships/jaeger/jaeger.texture.tga"
+  GL.textureBinding GL.Texture2D $= Just t
+
+  let vertexShader = foldl BS.append BS.empty
+        [ "attribute vec3 coord3d;"
+        , "attribute vec2 texcoord;"
+        , "uniform mat4 mvp;"
+        , "varying vec2 f_texcoord;"
+        , "void main(void) {"
+        , "  gl_Position = mvp * vec4(coord3d, 1.0);"
+        , "  f_texcoord = texcoord;"
+        , "}"
+        ]
+      fragmentShader = foldl BS.append BS.empty
+        [ "varying vec2 f_texcoord;"
+        , "uniform sampler2D texture;"
+        , "void main(void) {"
+        -- , "  gl_FragColor = vec4(color, 1.0);"
+        -- , "  gl_FragColor = vec4(1.0);"
+        , "  vec2 flip = vec2(f_texcoord.x, 1.0 - f_texcoord.y);"
+        , "  gl_FragColor = texture2D(texture, flip);"
+        , "}"
+        ]
+  p <- GLU.simpleShaderProgramBS vertexShader fragmentShader
+
+  return StateData
+    { ship = (shipBO, length $ loTriangles lobj)
+    , proj = GLU.projectionMatrix (pi/2) (800 / 600) 1 (-1)
+    , view = lookAt (V3 0 2 0) (V3 0 0 (-4)) (V3 0 1 0)
+    , model = V3 0 0 (-5)
+    , program = p
+    , mrot = Quaternion 1 (V3 0 0 0)
+    }
+
+loadTex :: FilePath -> IO GL.TextureObject
+loadTex f = do
+  t <- either error id <$> GLU.readTexture f
+  GL.textureFilter GL.Texture2D $= ((GL.Linear', Nothing), GL.Linear')
+  GLU.texture2DWrap $= (GL.Repeated, GL.ClampToEdge)
+  return t
+
+update :: Double -> Affection StateData ()
+update _ = return ()
+
+draw :: Affection StateData ()
+draw = do
+  GL.viewport $= (GL.Position 0 0, GL.Size 800 600)
+  (StateData (shipbo, slen) p v m s rot) <- getAffection
+  let pvm = p !*! v !*! mkTransformation rot m
+  liftIO $ GLU.setUniform s "mvp" pvm
+  GL.currentProgram $= (Just . GLU.program $ s)
+  GL.bindVertexArrayObject $= Just shipbo
+  liftIO $ GL.drawArrays GL.Triangles 0 (fromIntegral slen)
+
+handle :: SDL.EventPayload -> Affection StateData ()
+handle (SDL.WindowClosedEvent _) = quit
+
+handle (SDL.KeyboardEvent dat) = do
+  let key = SDL.keysymKeycode (SDL.keyboardEventKeysym dat)
+  when (SDL.keyboardEventKeyMotion dat == SDL.Pressed) $
+    handleKey key
+
+handle _ = return ()
+
+handleKey :: SDL.Keycode -> Affection StateData ()
+handleKey code
+  | code == SDL.KeycodeR =
+    GL.clearColor $= GL.Color4 1 0 0 1
+  | code == SDL.KeycodeG =
+    GL.clearColor $= GL.Color4 0 1 0 1
+  | code == SDL.KeycodeB =
+    GL.clearColor $= GL.Color4 0 0 1 1
+  | code == SDL.KeycodeP = do
+    r <- liftIO $ randomRIO (0, 1)
+    g <- liftIO $ randomRIO (0, 1)
+    b <- liftIO $ randomRIO (0, 1)
+    a <- liftIO $ randomRIO (0, 1)
+    GL.clearColor $= GL.Color4 r g b a
+  | code == SDL.KeycodeEscape =
+    quit
+  | code == SDL.KeycodeF = do
+    dt <- deltaTime <$> get
+    liftIO $ putStrLn $ show (1 / dt) ++ " FPS"
+  | code == SDL.KeycodeT =
+    toggleScreen
+  | code `elem`
+    [ SDL.KeycodeW
+    , SDL.KeycodeS
+    , SDL.KeycodeA
+    , SDL.KeycodeD
+    , SDL.KeycodeQ
+    , SDL.KeycodeE
+    ]
+    = do
+      sd <- getAffection
+      let rot = mrot sd
+          dphi = pi / 2 / 45
+          nquat = case code of
+            SDL.KeycodeW -> rot * axisAngle (V3 1 0 0) (-dphi)
+            SDL.KeycodeS -> rot * axisAngle (V3 1 0 0) dphi
+            SDL.KeycodeA -> rot * axisAngle (V3 0 1 0) (-dphi)
+            SDL.KeycodeD -> rot * axisAngle (V3 0 1 0) dphi
+            SDL.KeycodeE -> rot * axisAngle (V3 0 0 1) (-dphi)
+            SDL.KeycodeQ -> rot * axisAngle (V3 0 0 1) dphi
+            _            -> rot
+      putAffection sd
+        { mrot = nquat
+        }
+  | otherwise =
+    return ()

src/Util.hs

@@ -0,0 +1,67 @@
+module Util where
+
+import Codec.Wavefront
+
+import Control.Monad (sequence)
+
+import qualified Data.Vector as V
+
+data LoadedObject = LoadedObject
+  { loTriangles :: [Float]
+  , loLines     :: [Float]
+  , loPoints    :: [Float]
+  , loTexTri    :: Maybe [Float]
+  }
+
+loadObj :: WavefrontOBJ -> LoadedObject
+loadObj obj =
+  LoadedObject ts ls ps tritex
+  where
+    inter = objLocations obj
+    interTex = objTexCoords obj
+    faces = map elValue (V.toList $ objFaces obj)
+    lns = map elValue (V.toList $ objLines obj)
+    points = map elValue (V.toList $ objPoints obj)
+    deface (Face a b c []) =
+      map (\i -> inter V.! (faceLocIndex i -1)) [a, b, c]
+    deface _ =
+      error "loadObj: obj with quads encountered"
+    deline (Line a b) =
+      map (\i -> inter V.! (lineLocIndex i -1)) [a, b]
+    depoint (Point i) = inter V.! (i - 1)
+    tsLocs = concatMap deface faces
+    lsLocs = concatMap deline lns
+    psLocs = map depoint points
+    deLoc (Location x y z w) = [x, y, z, w]
+    deTex (TexCoord r s _) = [r, s]
+    ts = concatMap deLoc tsLocs
+    ls = concatMap deLoc lsLocs
+    ps = concatMap deLoc psLocs
+    defaceTex :: Face -> Maybe [TexCoord]
+    defaceTex (Face a b c []) =
+      mapM
+      (fmap (\x -> interTex V.! (x - 1)) . faceTexCoordIndex)
+      [a, b, c]
+    defaceTex _ =
+      error "loadObj: obj with quads encountered"
+    tritex :: Maybe [Float]
+    tritex = concatMap deTex <$> mftxs
+    mftxs :: Maybe [TexCoord]
+    mftxs = fmap concat (mapM defaceTex faces)
+
+-- objLocsToPtr :: WavefrontOBJ -> IO (Ptr Float, Int)
+-- objLocsToPtr obj = do
+--   let ivs = objLocations obj
+--       faces = map elValue $ V.toList $ objFaces obj
+--       vs = concatMap
+--         (\(Face a b c []) ->
+--           map (\i -> ivs V.! ((faceLocIndex i) - 1)) [a, b, c])
+--         faces
+--   ptr <- newArray $ concatMap (\(Location x y z w) -> [x, y, z, w]) vs
+--   return (ptr, length vs)
+-- 
+-- objUVsToPtr :: WavefrontOBJ -> IO (Ptr Float, Int)
+-- objUVsToPtr obj = do
+--   let uvs= V.toList $ objTexCoords obj
+--   ptr <- newArray $ concatMap (\(TexCoord r s t) -> [r, s, t]) uvs
+--   return (ptr, length uvs)