function calling error

[Wayne Rayner]

Ok well it's not really an error however I'm trying to create a library for basic4GL for game development. It is going to include functions a whole lot of them for the fact.

My problem is I was testing it for the functions I have. But I never called one and it came with an error. Saying functions didn't return anything. is there a way to call a function to false?

[DJLinux]

I can't help without the source code.

Joshy

[Wayne Rayner]

I can't help without the source code.

Joshy

well simply the source code a t the moment is really not much and it uses the toolbox plugin that you created.

function.gb

Function screenRes800600()
   WindowSize(800,600)
   ResizeSpriteArea(800,600)
EndFunction
                                 
Function screenRes1440900()
   WindowSize(1440,900)
   ResizeSpriteArea(1440,900)
EndFunction


and then i tested the function in
test.gb

include library/function.gb

screenRes800600()


but the thing is I wasn't using one function and it returned an error of function wasn't called or whatever.

All I'm trying to do is make a list of functions that can be used for the ease of game making in basic4GL

[Supermonkey]

What you want is a SUB not a FUNCTION. FUNCTIONS must return a value, subs return no value, which is why you are getting the error, as the screenRes function returns no value.
Also, you really need to read the programmers guide, instead of having many screen res functions that statically set the screen resolution you can use parameters to allow the user to specify a value i.e.


Sub screenRes(width, height)
WindowSize(width, height)
ResizeSpriteArea(width, height)
EndSub


[DJLinux]

sub ScreenRes(w,h)
  if w<128 then 
    w=128
  elseif w>2048 then
    w=2048
  end if
  if h<32 then 
    h=32
  elseif h>2048 then
    h=2048
  end if
  WindowPosSize(0,0,w,h)
  ResizeSpriteArea(w,h)
End sub

ScreenRes(1024,768)
while TRUE
  Sleep(100)
wend

[Darkjester]

Function ScreenRes(winw, winh)
windowsize(winw,winh)
resizespritearea(winw,winh)
return 0
end function

[Wayne Rayner]

What you want is a SUB not a FUNCTION. FUNCTIONS must return a value, subs return no value, which is why you are getting the error, as the screenRes function returns no value.
Also, you really need to read the programmers guide, instead of having many screen res functions that statically set the screen resolution you can use parameters to allow the user to specify a value i.e.

Yea my mistake I should of had it where the person using it chooses the screen height. Also the thing is I like functions over sub routines.

Function ScreenRes(winw, winh)
windowsize(winw,winh)
resizespritearea(winw,winh)
return 0
end function

thanks darkjester helped me a lot.

thanks for all your input as it did help me out.