Questions about text field and numbers

Karriz

Hi, I've been wondering how can I limit the length of a number, so that instead of for example 7,458635 I'd get 7,5. This is probably basic lua stuff, but I don't know what to search for.

Also, is it possible to use the text field like the print() function, so that you can add multiple values and text strings?

Like this: print("Distance from target:", distancevalue, "meters")

ar2rsawseen

1) no internal function but you can create one, like

function math.round(num, idp) local mult = 10^(idp or 0) return math.floor(num * mult + 0.5) / mult end   --and use it as print(math.round(25.9995, 2)) --results in 25.99

2) string concatenation in lua is through two dots ..
So you can do it like:

TextField.new(nil, "Distance from target:"..distancevalue.."meters")

Karriz

Thanks, that helps a lot!

john26

For formatted strings, you can use the string.format function which is part of the Lua standard library. This allows formatting using C-like syntax eg %12.3f

See

http://www.lua.org/pil/20.html