Multiple input not working properly

Question

I have 3 different buttons, one for each action. I want to be able to jump and walk at the same time, but there's a little problem. jumpButton doesn't work while I'm pressing leftButton or rightButton but the opposite works.

I have no idea what I'm doing wrong.

public void handleInput() {
    float x0 = (Gdx.input.getX(0) / (float)Gdx.graphics.getWidth()) * 960;
    float x1 = (Gdx.input.getX(1) / (float)Gdx.graphics.getWidth()) * 960;
    float y0 = (Gdx.input.getY(0) / (float)Gdx.graphics.getHeight()) * 640;
    float y1 = (Gdx.input.getY(1) / (float)Gdx.graphics.getHeight()) * 640;

    boolean jumpButton = (Gdx.input.isTouched(0) && x0 > 850 && x0 < 850+80 && y0 > 640-80);
    boolean leftButton = ( ((Gdx.input.isTouched(0) && x0 < 25+80) || (Gdx.input.isTouched(1) && x1 < 25+80)) && ((Gdx.input.isTouched(0) && x0 > 25) || (Gdx.input.isTouched(1) && x1 > 25)) && ((Gdx.input.isTouched(0) && y0 > 640-80) || (Gdx.input.isTouched(1) && y1 > 640-80)));
    boolean rightButton = ( ((Gdx.input.isTouched(0) && x0 < 125+80) || (Gdx.input.isTouched(1) && x1 < 125+80)) && ((Gdx.input.isTouched(0) && x0 > 125) || (Gdx.input.isTouched(1) && x1 > 125)) && ((Gdx.input.isTouched(0) && y0 > 640-80) || (Gdx.input.isTouched(1) && y1 > 640-80)));

    if (jumpButton) {
        // player jumps
    }
    if (leftButton) {
        // player walks to the left
    } else if (rightButton) {
        // player walks to the right
    } else {
        // player stops walking
    }
}

Have you tried moving the leftButton if statement on top of the jumpButton if statement, does it work the same? — John Smith
– John Smith, Commented Aug 1, 2015 at 20:33
If I comment the "player stops walking" I will be able to Jump and Walk because the player never stops walking, but I just want to walk when the player presses to walk. It looks like it is a problem with the jumpButton because it has the false value when I'm pressing leftButton/rightButton — sok
– sok, Commented Aug 1, 2015 at 20:47
So your problem is still that your player can not jump while walking right? — John Smith
– John Smith, Commented Aug 1, 2015 at 20:54
My problem is that when I'm holding right/left button to walk I press the jumpButton and nothing happens, but I can do the opposite, press right/left button while I'm holding the Jump button — sok
– sok, Commented Aug 1, 2015 at 20:56

Community · Accepted Answer · 2017-05-23 12:37:38Z

2

Based on my memories and for example this:

While it's difficult to understand the complicated ANDs and ORs, it seems clear that you forgot to check for the jumpButton being pressed after the other buttons.

With leftButton and rightButton, you have Gdx.input.isTouched(0) as well as Gdx.input.isTouched(1) (with OR inbetween them, so I take that as you're checking whether it was the first thing touched or the second). You don't do that with jumpButton, so you only check for the first finger there.

PS: I'd suggest making the code little more clear, for example iterating throught the pointer index (although it's just two options, so...), it would help you aswell. :)

edited May 23, 2017 at 12:37

CommunityBot

1

answered Aug 1, 2015 at 20:59

NoHarmDan

1864 bronze badges

\$\begingroup\$ +1 for more clear code. Always try to deconstruct long lines and functions into more readable lines or multiple methods. Keep it clear for others but especially yourself. \$\endgroup\$

Madmenyo
– Madmenyo

2015-08-03 08:39:16 +00:00
Commented Aug 3, 2015 at 8:39

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