Trouble with variables and love.graphics.print [SOLVED]

[ErvinGamez]

Hello, I created an account just for this.
I am having some trouble with variables and love.graphics.print, not much more to say. Now I won't post my whole code, here are the important bits:

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function love.draw()
    love.graphics.print("moves:" .. add, 100, 100)
    end

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function love.load()
    player = {
        add = 0,
    }

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function love.keypressed( key )
   if key == "a" then
      add = add + 1
   end
end

And I keep getting this error message:

Error

main.lua:34: attempt to concatenate global 'add' (a nil value)


Traceback

main.lua:34: in function 'draw;
[C]: in function 'xpcall'

Pretty sure it's got something to do with the love.draw code.

[veethree]

You put the "add" variable into the player table. So to use it in the code you need to do "player.add" not just "add".

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love.graphics.print("moves:" .. player.add, 100, 100)

[HugoBDesigner]

You should have posted this in "Support and Development", not here. But this is just technical detail. Well, if that's how you're managing it in your game, I can pretty much see what you are doing wrong: you're trying to change a variable that doesn't exists. Okay, you can see it there on love.load, but the game doesn't. It is inside a table, which means that the variable should always be associated to the table. In your code, replace all the "add" that is alone by "player.add" or "player["add"]". This way, you'll be telling the game that the right variable to look for is inside the table "player", and not by itself

AAAAND someone posted before me. Pretty much the same thing

[ErvinGamez]

You should have posted this in "Support and Development", not here. But this is just technical detail. Well, if that's how you're managing it in your game, I can pretty much see what you are doing wrong: you're trying to change a variable that doesn't exists. Okay, you can see it there on love.load, but the game doesn't. It is inside a table, which means that the variable should always be associated to the table. In your code, replace all the "add" that is alone by "player.add" or "player["add"]". This way, you'll be telling the game that the right variable to look for is inside the table "player", and not by itself

AAAAND someone posted before me. Pretty much the same thing

You put the "add" variable into the player table. So to use it in the code you need to do "player.add" not just "add".

Code: Select all

love.graphics.print("moves:" .. player.add, 100, 100)

Thanks, both of you!