Variable 2.666667 instead of 2.7

Hi Scirra friends,

I have a problem with variables.

I have a variable named "PistolaDaño". Its initial value is 1.2

So, when you press a button (called "Mejorar"), the variable has too add 0.3 to its value.

It means that if press one time that button, the variable will be 1.5.

If i press it twice will be 1.8.

Then 2.1

Etc.

The first 2 or 3 times i do it, everything works well..

BUT,

After some clics its value chage to something like: 2.6999999997 (Instead of 2.7).

(I can see that at the "Bug" test).

You can see it at the pictures:

https://mega.nz/#!owcFyCrQ!eTTeEULLIdf4 ... 7okyORnj6U

https://mega.nz/#!V8lSlRBB!w-Ao6mnpvcZ5 ... ASwXXaj9uw

https://mega.nz/#!t18SnBhR!1Ixbpx9twG7E ... T73DX7vX8g

https://mega.nz/#!wwcBzCAA!ND5hMRmW7UC0 ... KJ82d7L_X8

Thaks all !!!!!!!!

Mathematic error

you cannot expect, when using float numbers, to have a perfect accuracy all the time, due to how computers handle the numbers in memory (0.3 in binary is something equal to 0.01001, which is close to 0.010011001100110011001100110011001100110011001100110011 but not exactly that), so this is actually a bug that is quite innevitable, thus you have to take it in account (by rounding the number accordingly)

mutiply PistolaDaño by 10, round it then divide by 10. Like this:

var PistolaDaño = 1.2; System->AddTo->0.3 System->SetValue->(round(PistolaDaño * 10))/10

Scirra should add an option to get floats after round and not only ints

GloryF90 Float numbers will always have an error factor

you cold try the following rounding

round(variable*100)/100[/code:1f5nbd85], where 100 is the precision of the number, where 2.699999 becomes 2.70

Thanks all of you!!