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DarkBASIC Discussion / Functions

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Stora tomtefar
20
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Joined: 15th Mar 2005
Location: Göteborg, Sweden
Posted: 5th Mar 2006 13:34
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Hellu ye all.

Well, I'm experimenting with functions and Since I just just gosub's before, I'm not so familiar with the whole idea with functions, although I guess that functions and gosub's does have one or two things in common.

I tried to use this quite simple code in my program:



I want the value namned 'funktion#' to be increased by 10 everytime the screen is updated, but it's only increased once, constantly showing the value of 10 one the screen.
So, my guess was, and is, that I made something wrong within the function command. Anybody knows what this might be? Could you please try to explain with simple words how a function really works, please?
Thanks!

www.godhatessweden.com

Good laughter!
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Sven B
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Joined: 5th Jan 2005
Location: Belgium
Posted: 5th Mar 2006 15:55
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Well, the parameter you pass through, is always 0.

Funktion(Funktion#(=0.0)) will give you therefor: 10.0

If you want it to be constantly increased, then you should put the returned value, in the current one. Like this:

Funktion# = Funktion(Function#)

It's the programmer's life:
Have a problem, solve the problem, and have a new problem to solve.
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Halo Man
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Joined: 5th Nov 2005
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Posted: 5th Mar 2006 15:57
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I think you need to add:



Then you can refresh the screen

Also, add 'set text opaque' right before the text in function funktion

Current working on Online Paintball.
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Kevin Picone
22
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Joined: 27th Aug 2002
Location: Australia
Posted: 5th Mar 2006 15:58
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Try this,


do

Funktion#=Funktion(Funktion#)

sync
loop


So the variable Funktion# is being passed into the function, and the function is returning the new result


Play Hard! Play Basic!
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Grog Grueslayer
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19
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Joined: 30th May 2005
Playing: Green Hell
Posted: 5th Mar 2006 22:12
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Since it doesn't look like that number will ever have a decimal point it doesn't need to be a float. Also the variables in the function don't have to be the same name as the variables you're using outside of the function.




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