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Text and variables
Posted: Wed Jan 02, 2019 10:55 am
by BobTheBuilder
Is there a way of setting a text (love.graphics.print("Hello)) to a variable? For example, when I click the "g" button, a variable will increase by 10 and will cause a text to change to 10.
Re: Text and variables
Posted: Wed Jan 02, 2019 10:43 pm
by Snaker1
Not sure if I understand your question but try:
Code: Select all
love.graphics.print("This is the variable g:"..tostring(g), 0, 0)
If you have a variable like g that is a number, you need to call the function tostring to convert it into a string.
To concatenate two strings together, you use the operator .. like:
Code: Select all
name = "Tom"
new_string = "Hello:"..name
Here is an example:
Code: Select all
function love.load()
g = 0
end
function love.mousepressed()
g = g + 1
end
function love.draw()
love.graphics.print("g is: "..tostring(g), 0, 0)
end
This will increase g every time the mouse is clicked.
Now you only need to include checks for the mouse position, so that g gets only increased when the mouse is in a certain area. I am sure you can do that!
I hope this helps!
I think you are in the wrong sub forum, by the way. ;P
Re: Text and variables
Posted: Wed Jan 02, 2019 10:45 pm
by zorg
Hi and welcome to the forums;
yes, just use a variable, and print that.
Code: Select all
local v = 10
function love.keypressed(k)
if k == 'g' then v = v + 10 end
end
function love.draw()
love.graphics.print(v,0,0)
end
If that's not what you meant, then clarify further.
Also i hate being ninja'd by others 
Edit:
Snaker1 wrote: ↑Wed Jan 02, 2019 10:43 pm
If you have a variable ... that is a number, you
need to call the function tostring to convert it into a string.
That's a bit incorrect, lua itself usually coerces numbers into strings, the string concat. operator (..) certainly does.
Re: Text and variables
Posted: Wed Jan 02, 2019 11:13 pm
by Snaker1
zorg wrote: ↑Wed Jan 02, 2019 10:45 pm
That's a bit incorrect, lua itself usually coerces numbers into strings, the string concat. operator (..) certainly does.
Yes, true but I tried to teach him about how to explicitly convert a string into a number because that is pretty important as well.
Good point though, that (..) can implicitly convert it. Should have mentioned that.