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Its come to the stage in my program where I want to function areas of code. The trouble is when I move the code into a function block it stops working.

The function I want to create will be one to detect player input.

I am using DB classic.

do
moveplayer(x#)
loop

function moveplayer(x#)
if leftkey()=1 then x#=x#-0.1
if rightkey()=1 then x#=x#+0.1
endfunction x#

Any help would be great

Cheers

Mark

When you call the function with moveplayer(x#), you are passing the variable x# to be used by the function. At the end of your function, you are returning x# back to the caller, yet your caller is not written properly to accept return values.

If you had put x#=moveplayer(x#), then you wouldn't have a problem.

So change that line to read x#=moveplayer(x#).

Alternately, you could declare x as a global variable, and do away with passing the variables to/from the function.

Just remember, to pass data into a function, call it like DOTHIS(X). If you need data to be returned from the function, use A=DOTHIS(X) and also put a return value at the end of your ENDFUNCTION. And for functions to have their variable scope seen outside of the function (without passing the data directly), you must use global variables.

Thanks.

The funny thing was I was playing with functions and ended up coping the format from the manual.

Pity the manual isnt a bit more verbose as it would have saved this question.

once again cheers.

Mark.

No prob. The help file truly lacks detail in command descriptions, directly relavent example code, and is very much outdated. Hopefully this will change soon.