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Problem setting IsKeyPressed with a variable

 
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AmyGrrl
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Joined: 15 Dec 2016
Posts: 31
PostPosted: Fri Nov 02, 2018 4:51 pm    Post subject: Problem setting IsKeyPressed with a variable Reply with quote
I'm trying to make a HotKey that can be changed at anytime. You can set the key you want to use to activate in a variable. However it doesn't seem like IsKeyPressed likes using variables. Have tried everything I can think of. Below is just a small test example of one of the ways I have tried to get this to work.

This works when hardcoded

Code:
function ActivateLoop(thread)
  while true do
    if (isKeyPressed(VK_F)) then
      print ("It Does What I Put Here")
    else
    end
    Sleep(100)
  end
end



This is just one example of something I tried. This always fails. Will give an error or just do nothing when the key is pressed. Have tried at least 20 different ways to do VK_ with a variable. I'm thinking .. is not what I should be using for this.

Code:
ActivateKey="F"

function ActivateLoop(thread)
  while true do
    if (isKeyPressed(VK_ .. ActivateKey)) then
      print ("It Does What I Put Here")
    else
    end
    Sleep(100)
  end
end
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FreeER
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Joined: 09 Aug 2013
Posts: 1091
PostPosted: Fri Nov 02, 2018 8:38 pm    Post subject: Reply with quote
VK_F is a variable. VK_ is a valid variable name so what you're doing is trying to concatenate the variable VK_ which is almost certainly nil with the variable ActivateKey. Use _G["VK_" .. ActivateKey] (_G is the global environment table), or... you know, just set ActivateKey to the value of the variable VK_F with
Code:
ActivateKey = VK_F
alternatively the code for letters is just the ascii value of the uppercase letter so you could use
Code:
ActivateKey = ("F"):byte(1)
or
Code:
ActivateKey = string.byte('F',1)

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https://github.com/FreeER/ has a few CE related repos
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