Graphics.FreeGame.Base

Abstract structures that represents user interfaces

Types

type Game = Free GameAction

Game is a Monad that abstracts user interfaces.

data GameAction a

A base for Game monad.

Constructors

Tick a

EmbedIO (IO a)

Bracket (Game a)

DrawPicture Picture a

AskInput Key (Bool -> a)

GetMouseState (MouseState -> a)

QuitGame

Instances

Functor GameAction

Basic operations

tick :: MonadFree GameAction m => m ()

Finalize the current frame and refresh the screen.

embedIO :: MonadFree GameAction m => IO a -> m a

Embed arbitrary IO actions into a Game monad.

bracket :: MonadFree GameAction m => Game a -> m a

Run a Game monad in a Game monad. resources (e.g. pictures) will be released when inner computation is done.

quitGame :: MonadFree GameAction m => m a

Break the current computation.

Pictures

data Vec2

Constructors

Vec2 !Float !Float

Instances

Read Vec2

Show Vec2

Storable Vec2

Random Vec2

AbelianGroup Vec2

Vector Vec2

DotProd Vec2

Pointwise Vec2

Dimension Vec2

LeftModule Mat2 Vec2

RightModule Vec2 Mat2

UnitVector Vec2 Normal2

HasCoordinates Vec2 Float

HasCoordinates Mat2 Vec2

Extend Vec2 Vec3

Extend Vec2 Vec4

Diagonal Vec2 Mat2

Tensor Mat2 Vec2

Projective Vec2 Mat2 Ortho2 Mat3 Proj3

Determinant (Vec2, Vec2)

data Picture

A 2D Picture.

Constructors

BitmapPicture Bitmap

A Bitmap as a Picture.

Pictures [Picture]

A picture consist of some Pictures.

IOPicture (IO Picture)

A picture that may have side effects.

Rotate Float Picture

Rotated picture by the given angle (in degrees, counterclockwise).

Scale Vec2 Picture

Scaled picture.

Translate Vec2 Picture

A picture translated by the given coordinate.

Colored Color Picture

Colored picture.

transPicture :: (Picture -> Picture) -> GameAction cont -> GameAction cont

Lift a picture transformation into transformation of GameAction

drawPicture :: MonadFree GameAction m => Picture -> m ()

Draw a Picture.

Inputs

askInput :: MonadFree GameAction m => Key -> m Bool

Is the specified Key is pressed?

getMouseState :: MonadFree GameAction m => m MouseState

Get the mouse's state.

Settings

data GameParam

Parameters of the application.

Constructors

GameParam

Fields

framePerSecond :: Int

windowSize :: (Int, Int)

windowTitle :: String

windowed :: Bool

defaultGameParam :: GameParam

640*480(windowed), 60fps

Deprecated

loadPicture :: MonadFree GameAction m => Bitmap -> m Picture

Deprecated: No longer needed; use BitmapPicture instead

Create a Picture from Bitmap.