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{-
pong - a very simple FunGEn example.
http://www.cin.ufpe.br/~haskell/fungen
Copyright (C) 2001 Andre Furtado <awbf@cin.ufpe.br>
This code 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.
-}
module Main where
import Graphics.UI.Fungen
import Graphics.Rendering.OpenGL (GLdouble)
import Paths_FunGEn (getDataFileName)
data GameAttribute = Score Int
width = 400
height = 400
w = fromIntegral width :: GLdouble
h = fromIntegral height :: GLdouble
main :: IO ()
main = do
texbmp <- getDataFileName "examples/pong/tex.bmp"
let winConfig = ((100,80),(width,height),"A brief example!")
bmpList = [(texbmp, Nothing)]
gameMap = textureMap 0 30 30 w h
bar = objectGroup "barGroup" [createBar]
ball = objectGroup "ballGroup" [createBall]
initScore = Score 0
input = [
(SpecialKey KeyRight, StillDown, moveBarToRight)
,(SpecialKey KeyLeft, StillDown, moveBarToLeft)
,(Char 'q', Press, \_ _ -> funExit)
]
funInit winConfig gameMap [bar,ball] () initScore input gameCycle (Timer 30) bmpList
createBall :: GameObject ()
createBall =
let ballPic = Basic (Circle 6.0 0.0 1.0 0.0 Filled)
in object "ball" ballPic False (w/2,h/2) (-8,8) ()
createBar :: GameObject ()
createBar =
let barBound = [(-25,-6),(25,-6),(25,6),(-25,6)]
barPic = Basic (Polyg barBound 1.0 1.0 1.0 Filled)
in object "bar" barPic False (w/2,30) (0,0) ()
moveBarToRight :: Modifiers -> Position -> IOGame GameAttribute () () () ()
moveBarToRight _ _ = do
obj <- findObject "bar" "barGroup"
(pX,pY) <- getObjectPosition obj
(sX,_) <- getObjectSize obj
if (pX + (sX/2) + 5 <= w)
then (setObjectPosition ((pX + 5),pY) obj)
else (setObjectPosition ((w - (sX/2)),pY) obj)
moveBarToLeft :: Modifiers -> Position -> IOGame GameAttribute () () () ()
moveBarToLeft _ _ = do
obj <- findObject "bar" "barGroup"
(pX,pY) <- getObjectPosition obj
(sX,_) <- getObjectSize obj
if (pX - (sX/2) - 5 >= 0)
then (setObjectPosition ((pX - 5),pY) obj)
else (setObjectPosition (sX/2,pY) obj)
gameCycle :: IOGame GameAttribute () () () ()
gameCycle = do
(Score n) <- getGameAttribute
printOnScreen (show n) TimesRoman24 (0,0) 1.0 1.0 1.0
ball <- findObject "ball" "ballGroup"
col1 <- objectLeftMapCollision ball
col2 <- objectRightMapCollision ball
when (col1 || col2) (reverseXSpeed ball)
col3 <- objectTopMapCollision ball
when col3 (reverseYSpeed ball)
col4 <- objectBottomMapCollision ball
when col4 $ do
-- funExit
setGameAttribute (Score 0)
reverseYSpeed ball
bar <- findObject "bar" "barGroup"
col5 <- objectsCollision ball bar
let (_,vy) = getGameObjectSpeed ball
when (and [col5, vy < 0]) (do reverseYSpeed ball
setGameAttribute (Score (n + 10)))
showFPS TimesRoman24 (w-40,0) 1.0 0.0 0.0