Count the number of joysticks attached to the system.
See SDL_NumJoysticks for C documentation.
Modulesdl2-2.5.6.1Haskell2010
SDL.Input.Joystick
Synopsis
- value numJoysticks
- value availableJoysticks
- data JoystickDevice
- value openJoystick
- value closeJoystick
- value getJoystickID
- newtype Joystick
- data JoyButtonState
- value buttonPressed
- value ballDelta
- value axisPosition
- value numAxes
- value numButtons
- value numBalls
- data JoyHatPosition
- value getHat
- value numHats
- data JoyDeviceConnection
- Packagesdl2-2.5.6.1
- Exports18
- LanguageHaskell2010
- LicenceBSD-3-Clause
- SourceJoystick.hs
Enumerate all connected joysticks, retrieving a description of each.
A description of joystick that can be opened using openJoystick. To retrieve a list of connected joysticks, use availableJoysticks.
Constructors
Instances6Eq, Ord, Read, Show, Generic, Rep
Eq JoystickDeviceDefined in sdl2-2.5.6.1 · SDL.Input.JoystickOrd JoystickDeviceDefined in sdl2-2.5.6.1 · SDL.Input.JoystickRead JoystickDeviceDefined in sdl2-2.5.6.1 · SDL.Input.JoystickShow JoystickDeviceDefined in sdl2-2.5.6.1 · SDL.Input.JoystickGeneric JoystickDeviceDefined in sdl2-2.5.6.1 · SDL.Input.Joysticktype Rep JoystickDevice = D1 ('MetaDataDefined in sdl2-2.5.6.1 · SDL.Input.Joystick"JoystickDevice"
"SDL.Input.Joystick"
"sdl2-2.5.6.1-7oXAGrwcwFK8vy6YsQLWbm"
'False) (C1 ('MetaCons"JoystickDevice"
'PrefixI 'True) (S1 ('MetaSel ('Just"joystickDeviceName"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Text) :*: S1 ('MetaSel ('Just"joystickDeviceId"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 CInt)))
value
openJoystick :: (Functor m, MonadIO m)=> JoystickDeviceThe device to open. Use availableJoysticks to find
JoystickDevicess-> m Joystick
Open a joystick so that you can start receiving events from interaction with this joystick.
See SDL_JoystickOpen for C documentation.
Close a joystick previously opened with openJoystick.
See SDL_JoystickClose for C documentation.
Get the instance ID of an opened joystick. The instance ID is used to identify the joystick in future SDL events.
See SDL_JoystickInstanceID for C documentation.
Instances6Eq, Data, Ord, Show, Generic, Rep
Eq JoystickDefined in sdl2-2.5.6.1 · SDL.Internal.TypesData JoystickDefined in sdl2-2.5.6.1 · SDL.Internal.TypesOrd JoystickDefined in sdl2-2.5.6.1 · SDL.Internal.TypesShow JoystickDefined in sdl2-2.5.6.1 · SDL.Internal.TypesGeneric JoystickDefined in sdl2-2.5.6.1 · SDL.Internal.Typestype Rep Joystick = D1 ('MetaDataDefined in sdl2-2.5.6.1 · SDL.Internal.Types"Joystick"
"SDL.Internal.Types"
"sdl2-2.5.6.1-7oXAGrwcwFK8vy6YsQLWbm"
'True) (C1 ('MetaCons"Joystick"
'PrefixI 'True) (S1 ('MetaSel ('Just"joystickPtr"
) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Joystick)))
Identifies the state of a joystick button.
Instances8Eq, Data, Ord, Read, Show, Generic, …
Eq JoyButtonStateDefined in sdl2-2.5.6.1 · SDL.Input.JoystickData JoyButtonStateDefined in sdl2-2.5.6.1 · SDL.Input.JoystickOrd JoyButtonStateDefined in sdl2-2.5.6.1 · SDL.Input.JoystickRead JoyButtonStateDefined in sdl2-2.5.6.1 · SDL.Input.JoystickShow JoyButtonStateDefined in sdl2-2.5.6.1 · SDL.Input.JoystickGeneric JoyButtonStateDefined in sdl2-2.5.6.1 · SDL.Input.JoystickFromNumber JoyButtonState Word8Defined in sdl2-2.5.6.1 · SDL.Input.Joysticktype Rep JoyButtonState = D1 ('MetaDataDefined in sdl2-2.5.6.1 · SDL.Input.Joystick"JoyButtonState"
"SDL.Input.Joystick"
"sdl2-2.5.6.1-7oXAGrwcwFK8vy6YsQLWbm"
'False) (C1 ('MetaCons"JoyButtonPressed"
'PrefixI 'False) U1 :+: C1 ('MetaCons"JoyButtonReleased"
'PrefixI 'False) U1)
value
buttonPressed Determine if a given button is currently held.
See SDL_JoystickGetButton for C documentation.
value
ballDelta Get the ball axis change since the last poll.
See SDL_JoystickGetBall for C documentation.
Get the current state of an axis control on a joystick.
Returns a 16-bit signed integer representing the current position of the axis. The state is a value ranging from -32768 to 32767.
On most modern joysticks the x-axis is usually represented by axis 0 and the y-axis by axis 1. The value returned by axisPosition is a signed integer (-32768 to 32767) representing the current position of the axis. It may be necessary to impose certain tolerances on these values to account for jitter.
Some joysticks use axes 2 and 3 for extra buttons.
See SDL_JoystickGetAxis for C documentation.
Get the number of general axis controls on a joystick.
See SDL_JoystickNumAxes for C documentation.
Get the number of buttons on a joystick.
See SDL_JoystickNumButtons for C documentation.
Get the number of trackballs on a joystick.
See SDL_JoystickNumBalls for C documentation.
Identifies the state of the POV hat on a joystick.
Constructors
HatCenteredCentered position
HatUpUp position
HatRightRight position
HatDownDown position
HatLeftLeft position
HatRightUpRight-up position
HatRightDownRight-down position
HatLeftUpLeft-up position
HatLeftDownLeft-down position
Instances8Eq, Data, Ord, Read, Show, Generic, …
Eq JoyHatPositionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickData JoyHatPositionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickOrd JoyHatPositionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickRead JoyHatPositionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickShow JoyHatPositionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickGeneric JoyHatPositionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickFromNumber JoyHatPosition Word8Defined in sdl2-2.5.6.1 · SDL.Input.Joysticktype Rep JoyHatPosition = D1 ('MetaDataDefined in sdl2-2.5.6.1 · SDL.Input.Joystick"JoyHatPosition"
"SDL.Input.Joystick"
"sdl2-2.5.6.1-7oXAGrwcwFK8vy6YsQLWbm"
'False) (((C1 ('MetaCons"HatCentered"
'PrefixI 'False) U1 :+: C1 ('MetaCons"HatUp"
'PrefixI 'False) U1) :+: (C1 ('MetaCons"HatRight"
'PrefixI 'False) U1 :+: C1 ('MetaCons"HatDown"
'PrefixI 'False) U1)) :+: ((C1 ('MetaCons"HatLeft"
'PrefixI 'False) U1 :+: C1 ('MetaCons"HatRightUp"
'PrefixI 'False) U1) :+: (C1 ('MetaCons"HatRightDown"
'PrefixI 'False) U1 :+: (C1 ('MetaCons"HatLeftUp"
'PrefixI 'False) U1 :+: C1 ('MetaCons"HatLeftDown"
'PrefixI 'False) U1))))
value
getHat Get current position of a POV hat on a joystick.
See SDL_JoystickGetHat for C documentation.
Get the number of POV hats on a joystick.
See SDL_JoystickNumHats for C documentation.
Identifies whether a joystick has been connected or disconnected.
Instances8Eq, Data, Ord, Read, Show, Generic, …
Eq JoyDeviceConnectionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickData JoyDeviceConnectionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickOrd JoyDeviceConnectionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickRead JoyDeviceConnectionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickShow JoyDeviceConnectionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickGeneric JoyDeviceConnectionDefined in sdl2-2.5.6.1 · SDL.Input.JoystickFromNumber JoyDeviceConnection Word32Defined in sdl2-2.5.6.1 · SDL.Input.Joysticktype Rep JoyDeviceConnection = D1 ('MetaDataDefined in sdl2-2.5.6.1 · SDL.Input.Joystick"JoyDeviceConnection"
"SDL.Input.Joystick"
"sdl2-2.5.6.1-7oXAGrwcwFK8vy6YsQLWbm"
'False) (C1 ('MetaCons"JoyDeviceAdded"
'PrefixI 'False) U1 :+: C1 ('MetaCons"JoyDeviceRemoved"
'PrefixI 'False) U1)