1 files changed, 0 insertions, 141 deletions

diff --git a/demos/pong/Pong.hs b/demos/pong/Pong.hs
deleted file mode 100644
index accc75d..0000000
--- a/demos/pong/Pong.hs
+++ /dev/null
@@ -1,141 +0,0 @@
-module Pong
-  ( GameEvent (..),
-    GameObject,
-    newWorld,
-    stepWorld,
-    aabb,
-  )
-where
-
-import Data.Monoid (mconcat)
-import GHC.Float (double2Float)
-import Spear.Math.AABB
-import Spear.Math.Spatial2
-import Spear.Math.Vector
-import Spear.Step
-
--- Configuration
-
-padSize = vec2 0.05 0.02
-
-ballSize = 0.01
-
-ballVelocity = vec2 0.3 0.3
-
-playerSpeed = 0.7
-
-initialEnemyPos = vec2 0.5 0.9
-
-initialPlayerPos = vec2 0.5 0.1
-
-initialBallPos = vec2 0.5 0.5
-
--- Game events
-
-data GameEvent
-  = MoveLeft
-  | MoveRight
-  | StopLeft
-  | StopRight
-  deriving (Eq, Ord)
-
--- Game objects
-
-data GameObject = GameObject
-  { aabb :: AABB2,
-    obj :: Obj2,
-    gostep :: Step [GameObject] [GameEvent] GameObject GameObject
-  }
-
-instance Spatial2 GameObject where
-  getObj2 = obj
-  setObj2 s o = s {obj = o}
-
-stepWorld :: Elapsed -> Dt -> [GameEvent] -> [GameObject] -> [GameObject]
-stepWorld elapsed dt evts gos = map (update elapsed dt evts gos) gos
-
-update :: Elapsed -> Dt -> [GameEvent] -> [GameObject] -> GameObject -> GameObject
-update elapsed dt evts gos go =
-  let (go', s') = runStep (gostep go) elapsed dt gos evts go
-   in go' {gostep = s'}
-
-ballBox, padBox :: AABB2
-ballBox = AABB2 (vec2 (- s) (- s)) (vec2 s s) where s = ballSize
-padBox = AABB2 (- padSize) padSize
-
-obj2 = obj2FromVectors unitx2 unity2
-
-newWorld =
-  [ GameObject ballBox (obj2 initialBallPos) $ stepBall ballVelocity,
-    GameObject padBox (obj2 initialEnemyPos) stepEnemy,
-    GameObject padBox (obj2 initialPlayerPos) stepPlayer
-  ]
-
--- Ball steppers
-
-stepBall vel = collideBall vel .> moveBall
-
-collideBall :: Vector2 -> Step [GameObject] e GameObject (Vector2, GameObject)
-collideBall vel = step $ \_ dt gos _ ball ->
-  let (AABB2 pmin pmax) = aabb ball `aabbAdd` pos ball
-      collideCol = x pmin < 0 || x pmax > 1
-      collideRow = y pmin < 0 || y pmax > 1 || any (collide ball) (tail gos)
-      negx v@(Vector2 x y) = if collideCol then vec2 (- x) y else v
-      negy v@(Vector2 x y) = if collideRow then vec2 x (- y) else v
-      vel' = negx . negy $ vel
-      delta = dt -- A small delta to apply when collision occurs.
-      adjustX = if collideCol then scale delta (vec2 (x vel) 0) else vec2 0 0
-      adjustY = if collideRow then scale delta (vec2 0 (y vel)) else vec2 0 0
-   in ((vel' + adjustX + adjustY, ball), collideBall vel')
-
-collide go1 go2 =
-  let (AABB2 (Vector2 xmin1 ymin1) (Vector2 xmax1 ymax1)) =
-        aabb go1 `aabbAdd` pos go1
-      (AABB2 (Vector2 xmin2 ymin2) (Vector2 xmax2 ymax2)) =
-        aabb go2 `aabbAdd` pos go2
-   in not $
-        xmax1 < xmin2 || xmin1 > xmax2
-          || ymax1 < ymin2
-          || ymin1 > ymax2
-
-aabbAdd (AABB2 pmin pmax) p = AABB2 (p + pmin) (p + pmax)
-
-moveBall :: Step s e (Vector2, GameObject) GameObject
-moveBall = step $ \_ dt _ _ (vel, ball) -> (move (scale dt vel) ball, moveBall)
-
--- Enemy stepper
-
-stepEnemy = movePad
-
-movePad :: Step s e GameObject GameObject
-movePad = step $ \elapsed _ _ _ pad ->
-  let p = vec2 px 0.9
-      px =
-        double2Float (sin elapsed * 0.5 + 0.5)
-          * (1 - 2 * x padSize)
-          + x padSize
-   in (setPos p pad, movePad)
-
--- Player stepper
-
-stepPlayer = sfold moveGO .> clamp
-
-moveGO =
-  mconcat
-    [ switch StopLeft sid MoveLeft (moveGO' $ vec2 (- playerSpeed) 0),
-      switch StopRight sid MoveRight (moveGO' $ vec2 playerSpeed 0)
-    ]
-
-moveGO' :: Vector2 -> Step s e GameObject GameObject
-moveGO' dir = step $ \_ dt _ _ go -> (move (scale dt dir) go, moveGO' dir)
-
-clamp :: Step s e GameObject GameObject
-clamp = spure $ \go ->
-  let p' = vec2 (clamp' x s (1 - s)) y
-      (Vector2 x y) = pos go
-      clamp' x a b
-        | x < a = a
-        | x > b = b
-        | otherwise = x
-      (Vector2 s _) = padSize
-   in setPos p' go