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Multiple input not recognized. [Likely solved]


I'm working on the game in which player often holds down around 4 buttons at the time (movement along x-axis, movement along y-axis, rotation, action).

To avoid constantly reading keyDown, I'm holding their states in bools. Here is the screenshot of that (rather simple) setup.


THE PROBLEM: When I'm holding down 2 key, e.g. 'd' and 'e', clicking down 3rd key, e.g. 'w' is not recognized. However it works fine on its own.

Some combinations of 3 keys seem to be working too, but they are minority. More examples:

Hold 'd' and 'e', click '2' = works

Hold 'w' and 'e', click '2' = doesn't work

Hold 'a' and 'w', click 'q' = doesn't work

Hold 'a' and 'w', click 'e' = works

UPDATE: Anticipating some answers, I redone input from ActionMappings to InputAxis - the problem persists with exactly same behavior. https://imgur.com/y4fzOsx.png

UPDATE2: Apparently it's a keyboard issue. I downloaded utility to show keys pressed (http://www.dcmembers.com/skrommel/download/showoff/) - some combinations of 3 keys work while others do not. This explanation was suggested by /u/avik244.

Product Version: UE 4.18
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asked Jan 18 '18 at 07:01 PM in Blueprint Scripting

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Hey there, i think that is a known regular keyboard limitation, back in the day if you pressed 3 keys at the same time you would get a constant beep letting you know you can't do that. I believe mechanical keyboards don't have this problem.

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answered Jan 20 '18 at 11:01 AM

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