Check For Any Key Pressed / Alt Key Mapping

[gamecreator]

At the title screen, I would like to have the user "Press any key to continue..." I couldn't find a Leadwerks function that does this. I also searched the forums and no luck there either.

 

Possibilities:

 

- Use a Windows-only function like GetKeyboardState though I'd rather not have this be the only thing preventing a Linux deployment

- See if I can incorporate another library like SDL but I doubt the Publisher will play well with it and I'd also rather avoid this

- Somehow check all of the keys one by one with KeyHit. I'm not sure how this would work as far as C code goes besides something going in a loop. For example, is it safe to check for later letters by incrementing on A (A+1, A+2, etc.)?

 

Thoughts?

 

Also, is there any way to not have the Alt button trigger the window menu? Most games let you map this button.

[AggrorJorn]

I made a helper class with a method AnyKeyDown(). I would loop over all the keys or a specific set like enter, space, escape, etc.

The downside to this is that Leadwerks has now marked those checked key as used. So if you would check the

state of a button again in another script, it would return a different value. That why I store the values of every key and use my own functions to check for key down/up.

 

Maybe this has changed though (haven't used in Le in a while).

[PerEspen00]

I made a helper class with a method AnyKeyDown(). I would loop over all the keys or a specific set like enter, space, escape, etc.

The downside to this is that Leadwerks now has marked those checked key as used. So if you would check the

state of a button again in another script, it would return a different value. That why I store the values of every key and use my own functions to check for key down/up.

 

Maybe this has changed though (haven't used in Le in a while).

 

 

Hi, I Think you just pin pointed one of my major bugs. When i pick up a weapon in my game, it shoots once. So i made like a timer thing were u can shoot only after 1 second of picking it up. Anyway, is there a way around this?

[AggrorJorn]

A custom input check class is the way I solved it. So basicly, if I have two lua scripts that want to know if the space bar in the same update frame, you get true in one script and false in the other.

Storing the value of the spacebar being pressed every frame prevents this from happening.

[gamecreator]

I'm using C/C++ so Lua limitations are not an issue. I think going the method you suggested is the best, unless someone has a better idea. It's not that bad to do this one by one

 

key[i++]=Key::A;
key[i++]=Key::B;
etc.

 

or if they're incremental

 

(for int i=0; i<26; i++) key[i]=Key::A+i;

 

but not sure how reliable this is.

[AggrorJorn]

I recall doing this in C++ as well and although it is incremental, the keyboard layout takes some figuring out. The letter A starts somewhere on position 22,

Enter on 76 etc.

This was 2 years ago so maybe things changed.

[CangoJoe]

Forgive the pseudo-code but would something like this work?

 

If not KeyHit("Escape") then

ContinueGame()

Else

ExitGame()

End

[gamecreator]

Good thought but that would always trigger ContinueGame because if you don't hit any button at all, it counts as Escape not being hit.