Control.Wire.Session

State delta types

class (Monoid s, Real t) => HasTime t s | s -> t where

State delta types with time deltas.

Methods

dtime :: s -> t

Extract the current time delta.

Instances

(Monoid s, Real t) => HasTime t (Timed t s)

newtype Session m s

State delta generators as required for wire sessions, most notably to generate time deltas. These are mini-wires with the sole purpose of generating these deltas.

Constructors

Session

Fields

stepSession :: m (s, Session m s)

Instances

Functor m => Functor (Session m)

Applicative m => Applicative (Session m)

Wires with time

data Timed t s

This state delta type denotes time deltas. This is necessary for most FRP applications.

Constructors

Timed t s

Instances

(Monoid s, Real t) => HasTime t (Timed t s)

Functor (Timed t)

Foldable (Timed t)

Traversable (Timed t)

(Eq t, Eq s) => Eq (Timed t s)

(Data t, Data s) => Data (Timed t s)

(Ord t, Ord s) => Ord (Timed t s)

(Read t, Read s) => Read (Timed t s)

(Show t, Show s) => Show (Timed t s)

(Monoid s, Num t) => Monoid (Timed t s)

clockSession :: MonadIO m => Session m (s -> Timed NominalDiffTime s)

State delta generator for a real time clock.

clockSession_ :: (Applicative m, MonadIO m) => Session m (Timed NominalDiffTime ())

Non-extending version of clockSession.

countSession

Arguments

:: Applicative m

=> t

Increment size.

-> Session m (s -> Timed t s)

State delta generator for a simple counting clock. Denotes a fixed framerate. This is likely more useful than clockSession for simulations and real-time games.

countSession_ :: Applicative m => t -> Session m (Timed t ())

Non-extending version of countSession.