Input.isKeyJustPressed() method?

I would find a isKeyJustPressed(int) method similar to the justTouched() method very helpful.

I know this kind of event can be captured using InputProcessor, but this method would come in handy if

• you can’t easily use InputProcessor, for example if you have several game objects that want to listen for input. In that case you need to write another class which manages an InputMultiplexer and make it available to all objects that want to listen to input.
• you just want to check one button. Implementing InputProcessor or creating an annonymous subclass of InputAdapter seems like a lot of boiler plate code for one button.
• you need things to happen at a specific point / in a specific order in your render() method. This requires you to create flags for all your buttons and then check them in the desired order in the render method.

I can make a PR if you want…

[GreenLightning]

In my code I currently use this pattern in several places because I encountered one or more of the problems listed above.

private boolean keyPressed = false;

public void render() {
...
    if (Gdx.input.isKeyPressed(...)) {
        if (!keyPressed) {
            keyPressed = true;
            doStuff();
        }
    } else {
        keyPressed = false;
    }
}

I thought maybe more people have these problems and this method would simplify their game code.

[jrenner]

I don’t think this requires a new method. Just create a boolean[] of length 256. At the begin of every frame reset all its value to false. Then on each keydown you set the index that equals the keycode to true. Through the rest of your loop you can check this value to see if the key was pressed this frame.