Class Keyboard

java.lang.Object

de.gurkenlabs.litiengine.input.Keyboard

All Implemented Interfaces:

IKeyboard, IUpdateable, KeyEventDispatcher

public final class Keyboard
extends Object
implements KeyEventDispatcher, IKeyboard, IUpdateable

Nested Class Summary

Nested classes/interfaces inherited from interface de.gurkenlabs.litiengine.input.IKeyboard

IKeyboard.KeyPressedListener, IKeyboard.KeyReleasedListener, IKeyboard.KeyTypedListener

Method Summary

Modifier and Type	Method	Description
void	addKeyListener(KeyListener listener)	Register for key events.
void	clearExplicitListeners()	Removes all registered event consumers from the Keyboard instance.
void	consumeAlt(boolean consume)	Specifies whether the engine should consume key events with the ALT modifier.
boolean	dispatchKeyEvent(KeyEvent e)
boolean	isPressed(int keyCode)	Checks whether the key with the specified keyCode is currently being pressed.
void	onKeyPressed(int keyCode, IKeyboard.KeyPressedListener listener)	Adds the specified key pressed listener to receive events when the key with the defined keyCode has been pressed.
void	onKeyPressed(IKeyboard.KeyPressedListener listener)	Adds the specified key pressed listener to receive events when any key has been pressed.
void	onKeyReleased(int keyCode, IKeyboard.KeyReleasedListener listener)	Adds the specified key released listener to receive events when the key with the defined keyCode has been released.
void	onKeyReleased(IKeyboard.KeyReleasedListener listener)	Adds the specified key released listener to receive events when any key has been released.
void	onKeyTyped(int keyCode, IKeyboard.KeyTypedListener listener)	Adds the specified key typed listener to receive events when the key with the defined keyCode has been typed.
void	onKeyTyped(IKeyboard.KeyTypedListener listener)	Adds the specified key typed listener to receive events when any key has been typed.
void	removeKeyListener(KeyListener listener)	Unregister the specified listener from key events.
void	removeKeyPressedListener(int keyCode, IKeyboard.KeyPressedListener listener)	Unregister the specified listener from key pressed events.
void	removeKeyPressedListener(IKeyboard.KeyPressedListener listener)	Unregister the specified listener from key pressed events.
void	removeKeyReleasedListener(int keyCode, IKeyboard.KeyReleasedListener listener)	Unregister the specified listener from key released events.
void	removeKeyReleasedListener(IKeyboard.KeyReleasedListener listener)	Unregister the specified listener from key released events.
void	removeKeyTypedListener(int keyCode, IKeyboard.KeyTypedListener listener)	Unregister the specified listener from key typed events.
void	removeKeyTypedListener(IKeyboard.KeyTypedListener listener)	Unregister the specified listener from key typed events.
void	update()	This method is called by the game loop on all objects that are attached to the loop.
boolean	wasReleased(int keyCode)	Checks whether the key with the specified keyCode was recently released.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

consumeAlt

public void consumeAlt(boolean consume)

Description copied from interface: IKeyboard

Specifies whether the engine should consume key events with the ALT modifier.

This is useful to prevent unintended behavior of the default key processing.

Specified by:

consumeAlt in interface IKeyboard

Parameters:

consume - True if the events with the ALT modifier should be consumed.

See Also:

• InputEvent.consume()
• InputEvent.isAltDown()

dispatchKeyEvent

public boolean dispatchKeyEvent(KeyEvent e)

Specified by:

dispatchKeyEvent in interface KeyEventDispatcher

isPressed

public boolean isPressed(int keyCode)

Description copied from interface: IKeyboard

Checks whether the key with the specified keyCode is currently being pressed.

Specified by:

isPressed in interface IKeyboard

Parameters:

keyCode - The keyCode to check for.

Returns:

True if the key with the specified code is currently pressed.

See Also:

• IKeyboard.onKeyPressed(KeyPressedListener)
• IKeyboard.onKeyPressed(int, KeyPressedListener)

wasReleased

public boolean wasReleased(int keyCode)

Description copied from interface: IKeyboard

Checks whether the key with the specified keyCode was recently released.

Specified by:

wasReleased in interface IKeyboard

Parameters:

keyCode - The keyCode to check for.

Returns:

True if the key with the specified code was recently released.

See Also:

• IKeyboard.onKeyReleased(KeyReleasedListener)
• IKeyboard.onKeyReleased(int, KeyReleasedListener)

onKeyPressed

public void onKeyPressed(int keyCode,
 IKeyboard.KeyPressedListener listener)

Description copied from interface: IKeyboard

Adds the specified key pressed listener to receive events when the key with the defined keyCode has been pressed.

Specified by:

onKeyPressed in interface IKeyboard

Parameters:

keyCode - The keyCode to capture the key pressed event for.

listener - The listener to add.

See Also:

• KeyListener.keyPressed(KeyEvent)
• KeyEvent.KEY_PRESSED

removeKeyPressedListener

public void removeKeyPressedListener(int keyCode,
 IKeyboard.KeyPressedListener listener)

Description copied from interface: IKeyboard

Unregister the specified listener from key pressed events.

Specified by:

removeKeyPressedListener in interface IKeyboard

Parameters:

keyCode - The keyCode for which to remove the listener.

listener - The listener to remove.

onKeyReleased

public void onKeyReleased(int keyCode,
 IKeyboard.KeyReleasedListener listener)

Description copied from interface: IKeyboard

Adds the specified key released listener to receive events when the key with the defined keyCode has been released.

Specified by:

onKeyReleased in interface IKeyboard

Parameters:

keyCode - The keyCode to capture the key released event for.

listener - The listener to add.

See Also:

• KeyListener.keyReleased(KeyEvent)
• KeyEvent.KEY_RELEASED

removeKeyReleasedListener

public void removeKeyReleasedListener(int keyCode,
 IKeyboard.KeyReleasedListener listener)

Description copied from interface: IKeyboard

Unregister the specified listener from key released events.

Specified by:

removeKeyReleasedListener in interface IKeyboard

Parameters:

keyCode - The keyCode for which to remove the listener.

listener - The listener to remove.

onKeyTyped

public void onKeyTyped(int keyCode,
 IKeyboard.KeyTypedListener listener)

Description copied from interface: IKeyboard

Adds the specified key typed listener to receive events when the key with the defined keyCode has been typed.

Specified by:

onKeyTyped in interface IKeyboard

Parameters:

keyCode - The keyCode to capture the key typed event for.

listener - The listener to add.

See Also:

• KeyListener.keyTyped(KeyEvent)
• KeyEvent.KEY_TYPED

removeKeyTypedListener

public void removeKeyTypedListener(int keyCode,
 IKeyboard.KeyTypedListener listener)

Description copied from interface: IKeyboard

Unregister the specified listener from key typed events.

Specified by:

removeKeyTypedListener in interface IKeyboard

Parameters:

keyCode - The keyCode for which to remove the listener.

listener - The listener to remove.

onKeyPressed

public void onKeyPressed(IKeyboard.KeyPressedListener listener)

Description copied from interface: IKeyboard

Adds the specified key pressed listener to receive events when any key has been pressed.

Specified by:

onKeyPressed in interface IKeyboard

Parameters:

listener - The listener to add.

See Also:

• KeyListener.keyPressed(KeyEvent)
• KeyEvent.KEY_PRESSED

removeKeyPressedListener

public void removeKeyPressedListener(IKeyboard.KeyPressedListener listener)

Description copied from interface: IKeyboard

Unregister the specified listener from key pressed events.

Specified by:

removeKeyPressedListener in interface IKeyboard

Parameters:

listener - The listener to remove.

onKeyReleased

public void onKeyReleased(IKeyboard.KeyReleasedListener listener)

Description copied from interface: IKeyboard

Adds the specified key released listener to receive events when any key has been released.

Specified by:

onKeyReleased in interface IKeyboard

Parameters:

listener - The listener to add.

See Also:

• KeyListener.keyReleased(KeyEvent)
• KeyEvent.KEY_RELEASED

removeKeyReleasedListener

public void removeKeyReleasedListener(IKeyboard.KeyReleasedListener listener)

Description copied from interface: IKeyboard

Unregister the specified listener from key released events.

Specified by:

removeKeyReleasedListener in interface IKeyboard

Parameters:

listener - The listener to remove.

onKeyTyped

public void onKeyTyped(IKeyboard.KeyTypedListener listener)

Description copied from interface: IKeyboard

Adds the specified key typed listener to receive events when any key has been typed.

Specified by:

onKeyTyped in interface IKeyboard

Parameters:

listener - The listener to add.

See Also:

• KeyListener.keyTyped(KeyEvent)
• KeyEvent.KEY_TYPED

removeKeyTypedListener

public void removeKeyTypedListener(IKeyboard.KeyTypedListener listener)

Description copied from interface: IKeyboard

Unregister the specified listener from key typed events.

Specified by:

removeKeyTypedListener in interface IKeyboard

Parameters:

listener - The listener to remove.

clearExplicitListeners

public void clearExplicitListeners()

Description copied from interface: IKeyboard

Removes all registered event consumers from the Keyboard instance. This does not affect registered KeyListener instances.

Specified by:

clearExplicitListeners in interface IKeyboard

See Also:

• IKeyboard.onKeyPressed(KeyPressedListener)
• IKeyboard.onKeyPressed(int, KeyPressedListener)
• IKeyboard.onKeyReleased(KeyReleasedListener)
• IKeyboard.onKeyReleased(int, KeyReleasedListener)
• IKeyboard.onKeyTyped(KeyTypedListener)
• IKeyboard.onKeyTyped(int, KeyTypedListener)

addKeyListener

public void addKeyListener(KeyListener listener)

Description copied from interface: IKeyboard

Register for key events.

Specified by:

addKeyListener in interface IKeyboard

Parameters:

listener - The listener to add.

removeKeyListener

public void removeKeyListener(KeyListener listener)

Description copied from interface: IKeyboard

Unregister the specified listener from key events.

Specified by:

removeKeyListener in interface IKeyboard

Parameters:

listener - The listener to remove.

update

public void update()

Description copied from interface: IUpdateable

This method is called by the game loop on all objects that are attached to the loop. It's called on every tick of the loop and the frequency can be configured using the ClientConfiguration.

Specified by:

update in interface IUpdateable

See Also:

• ClientConfiguration.setMaxFps(int)