246 lines
11 KiB
Haskell
246 lines
11 KiB
Haskell
module Render ( setup
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, render
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) where
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import Paths_htanks
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import Game
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import MainLoop
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import Level
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import Player
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import Tank
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import Texture
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import Model
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import Control.Monad.State
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import Data.Fixed
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import Data.Maybe
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import Data.Obj3D
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import Data.Obj3D.GL
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import Data.Ratio
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import qualified Data.Map as M
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import Bindings.GLPng
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import Graphics.Rendering.OpenGL.GL (($=), GLfloat, GLdouble, Capability(..), Vector3(..))
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import Graphics.Rendering.OpenGL.GL.BeginEnd (unsafeRenderPrimitive, PrimitiveMode(..))
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import Graphics.Rendering.OpenGL.GL.CoordTrans
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import Graphics.Rendering.OpenGL.GL.Colors
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import Graphics.Rendering.OpenGL.GL.Framebuffer (clear, ClearBuffer(..))
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import Graphics.Rendering.OpenGL.GL.PerFragment (blend, blendFunc, BlendingFactor(..), depthFunc, ComparisonFunction(..))
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import Graphics.Rendering.OpenGL.GL.Texturing.Application (texture)
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import Graphics.Rendering.OpenGL.GL.Texturing.Objects (textureBinding, TextureObject(..))
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import Graphics.Rendering.OpenGL.GL.Texturing.Parameters (Repetition(..), Clamping(..), TextureFilter(..), MinificationFilter, MagnificationFilter)
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import Graphics.Rendering.OpenGL.GL.Texturing.Specification (TextureTarget(..))
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import Graphics.Rendering.OpenGL.GL.VertexArrays (clientState, ClientArrayType(..))
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import Graphics.Rendering.OpenGL.GL.VertexSpec
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import Foreign.ForeignPtr
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import Foreign.Marshal.Array
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texturePath :: Texture -> IO FilePath
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texturePath t = getDataFileName $ path t
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where
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path TextureWood = "tex/Wood.png"
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path TextureTank = "tex/Tank.png"
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path TextureCannon = "tex/Cannon.png"
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path TextureBullet = "tex/Bullet.png"
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path TextureCrosshair = "tex/Crosshair.png"
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getTexture :: Texture -> Main TextureObject
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getTexture t = do
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ts <- gets textures
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let tobj = M.lookup t ts
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if (isJust tobj)
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then
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return $ fromJust tobj
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else do
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path <- liftIO $ texturePath t
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tex <- liftIO $ pngBind path BuildMipmap Alpha (Repeated, Repeat) (Linear', Just Linear') Linear' >>= return . TextureObject . fromIntegral . fst
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modify $ \state -> state {textures = M.insert t tex ts}
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return tex
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modelPath :: Model -> IO FilePath
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modelPath t = getDataFileName $ path t
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where
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path ModelTank = "model/tank.obj"
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getModel :: Model -> Main InterleavedObj
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getModel m = do
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ms <- gets models
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let mobj = M.lookup m ms
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if (isJust mobj)
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then
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return $ fromJust mobj
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else do
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path <- liftIO $ modelPath m
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objmod <- liftIO $ loadObjFile path
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model <- case objmod of
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Left error -> fail $ show error
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Right obj -> liftIO $ makeInterleavedArrays obj
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modify $ \state -> state {models = M.insert m model ms}
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return model
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setup :: Main ()
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setup = do
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(lw, lh) <- gets (level . gameState) >>= \l -> return (fromIntegral . levelWidth $ l :: GLfloat, fromIntegral . levelHeight $ l :: GLfloat)
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liftIO $ do
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matrixMode $= Projection
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scale 1 1 (0.1 :: GLfloat)
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translate $ Vector3 (lw/2) (lh/2) 0
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rotate (-30) $ Vector3 1 0 (0 :: GLfloat)
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translate $ Vector3 (-lw/2) (-lh/2) 0
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matrixMode $= Modelview 0
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blend $= Enabled
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blendFunc $= (SrcAlpha, OneMinusSrcAlpha)
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depthFunc $= Just Lequal
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shadeModel $= Smooth
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lighting $= Enabled
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light (Light 0) $= Enabled
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position (Light 0) $= Vertex4 (-1) (-1) 1 (0 :: GLfloat)
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colorMaterial $= Just (Front, AmbientAndDiffuse)
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clientState VertexArray $= Enabled
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clientState NormalArray $= Enabled
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clientState TextureCoordArray $= Enabled
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-- cache textures & models
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getTexture TextureWood
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getTexture TextureTank
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getTexture TextureCannon
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getTexture TextureBullet
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getTexture TextureCrosshair
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getModel ModelTank
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return ()
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render :: Main ()
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render = do
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tanklist <- gets $ tanks . gameState
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bulletlist <- gets $ bullets . gameState
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playerlist <- gets players
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textureWood <- getTexture TextureWood
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textureTank <- getTexture TextureTank
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textureCannon <- getTexture TextureCannon
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textureBullet <- getTexture TextureBullet
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textureCrosshair <- getTexture TextureCrosshair
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modelTank <- getModel ModelTank
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(lw, lh) <- gets (level . gameState) >>= \l -> return (fromIntegral . levelWidth $ l :: GLfloat, fromIntegral . levelHeight $ l :: GLfloat)
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liftIO $ do
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clear [ColorBuffer, DepthBuffer]
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texture Texture2D $= Enabled
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textureBinding Texture2D $= Just textureWood
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normal $ Normal3 0 0 (1 :: GLfloat)
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unsafeRenderPrimitive Quads $ do
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texCoord $ TexCoord2 (0 :: GLfloat) (0 :: GLfloat)
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vertex $ Vertex2 0 lh
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texCoord $ TexCoord2 (lw/2) 0
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vertex $ Vertex2 lw lh
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texCoord $ TexCoord2 (lw/2) (lh/2)
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vertex $ Vertex2 lw 0
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texCoord $ TexCoord2 0 (lh/2)
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vertex $ Vertex2 (0 :: GLfloat) (0 :: GLfloat)
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texture Texture2D $= Disabled
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bindInterleavedArrays modelTank
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forM_ tanklist $ \tank -> unsafePreservingMatrix $ do
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let x = realToFrac . tankX $ tank
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y = realToFrac . tankY $ tank
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rotDir = realToFrac . tankDir $ tank
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rotAim = realToFrac . tankAim $ tank
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translate $ Vector3 x y (0 :: GLfloat)
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rotate rotDir $ Vector3 0 0 (1 :: GLfloat)
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--textureBinding Texture2D $= Just textureTank
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unsafePreservingMatrix $ do
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rotate 90 $ Vector3 1 0 (0 :: GLfloat)
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drawObject modelTank 1
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{-unsafeRenderPrimitive Quads $ do
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texCoord $ TexCoord2 (0 :: GLfloat) (0 :: GLfloat)
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vertex $ Vertex2 (-0.5 :: GLfloat) (-0.5 :: GLfloat)
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texCoord $ TexCoord2 (0 :: GLfloat) (1 :: GLfloat)
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vertex $ Vertex2 (-0.5 :: GLfloat) (0.5 :: GLfloat)
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texCoord $ TexCoord2 (1 :: GLfloat) (1 :: GLfloat)
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vertex $ Vertex2 (0.5 :: GLfloat) (0.5 :: GLfloat)
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texCoord $ TexCoord2 (1 :: GLfloat) (0 :: GLfloat)
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vertex $ Vertex2 (0.5 :: GLfloat) (-0.5 :: GLfloat)-}
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rotate (rotAim-rotDir) $ Vector3 0 0 (1 :: GLfloat)
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--textureBinding Texture2D $= Just textureCannon
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unsafePreservingMatrix $ do
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rotate 90 $ Vector3 1 0 (0 :: GLfloat)
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drawObject modelTank 0
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{-unsafeRenderPrimitive Quads $ do
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texCoord $ TexCoord2 (0 :: GLfloat) (0 :: GLfloat)
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vertex $ Vertex2 (-0.5 :: GLfloat) (-0.5 :: GLfloat)
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texCoord $ TexCoord2 (0 :: GLfloat) (1 :: GLfloat)
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vertex $ Vertex2 (-0.5 :: GLfloat) (0.5 :: GLfloat)
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texCoord $ TexCoord2 (1 :: GLfloat) (1 :: GLfloat)
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vertex $ Vertex2 (0.5 :: GLfloat) (0.5 :: GLfloat)
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texCoord $ TexCoord2 (1 :: GLfloat) (0 :: GLfloat)
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vertex $ Vertex2 (0.5 :: GLfloat) (-0.5 :: GLfloat)-}
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texture Texture2D $= Enabled
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forM_ bulletlist $ \bullet -> unsafePreservingMatrix $ do
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let x = realToFrac . bulletX $ bullet
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y = realToFrac . bulletY $ bullet
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rotDir = realToFrac . bulletDir $ bullet
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translate $ Vector3 x y (0 :: GLfloat)
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rotate rotDir $ Vector3 0 0 (1 :: GLfloat)
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textureBinding Texture2D $= Just textureBullet
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unsafeRenderPrimitive Quads $ do
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texCoord $ TexCoord2 (0 :: GLfloat) (0 :: GLfloat)
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vertex $ Vertex3 (-0.1 :: GLfloat) (-0.1 :: GLfloat) 0.01
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texCoord $ TexCoord2 (0 :: GLfloat) (1 :: GLfloat)
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vertex $ Vertex3 (-0.1 :: GLfloat) (0.1 :: GLfloat) 0.01
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texCoord $ TexCoord2 (1 :: GLfloat) (1 :: GLfloat)
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vertex $ Vertex3 (0.1 :: GLfloat) (0.1 :: GLfloat) 0.01
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texCoord $ TexCoord2 (1 :: GLfloat) (0 :: GLfloat)
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vertex $ Vertex3 (0.1 :: GLfloat) (-0.1 :: GLfloat) 0.01
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textureBinding Texture2D $= Just textureCrosshair
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forM_ playerlist renderPlayer
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