variables and gosubs???

[guest_05]

Hi guys,

i've never used varibles in pbp before, so im trying to do 2 things here:


what i want to do is this:

main:

i = 0
while(i < 10){

Variable = i


gosub ("subName" + Variable)

i = i  +1

}

goto main


subName1:

return



subName2:

return


subName3:

return



subName4:

return

its a bit of a mix of picbasic, and php, but im sure someone will get what im trying to do

Is it possible?

Thanks very much.

[Darrel Taylor]

Hi guest_05,

You can use the BRANCH or BRANCHL command for that.

Something like this...

i        VAR BYTE
Variable VAR BYTE

main:
    i = 0
    while(i < 5)
        Variable = i
        gosub SubSwitcher
        i = i  +1
    wend
goto main


SubSwitcher:
    BRANCHL  variable,[subName0, subName1, subName2, subName3, subName4]
return


subName0:

return


subName1:

return


subName2:

return


subName3:

return


subName4:

return

[sayzer]

DT, you are my teacher and I learn a lot from you here. With all my respect to you, please allow me to make a point;
BRANCHL will cause the program to jump. Thus, "return" with a "subroutine" will not work.

I made my point as below.

i   VAR BYTE

main:
    FOR i = 0 to 4
        BRANCHL  i,[subName0, subName1, subName2, subName3, subName4]
        Sayzers_Point:  'continue from where we were.
    NEXT i
GOTO main


subName0:

GOTO Sayzers_Point


subName1:

GOTO Sayzers_Point


subName2:

GOTO Sayzers_Point


subName3:

GOTO Sayzers_Point


subName4:

goto Sayzers_Point

or another example could be as below.

i   VAR BYTE

main:

    FOR i = 0 to 4

        SELECT CASE i

           CASE 0
                'do something
           CASE 1
                'do something else
           CASE 2
                'do something more
           CASE 3
                'do something interesting
           CASE 4
                'do something bro
         END SELECT

    NEXT i

GOTO main

---------------------------------

[mister_e]

Nope..it will perfectly work dude and what Darrel did it's really clever.

When you'll meet the Return, it will automatically RETURN at the main... but not at SubSwitcher.

It's a kind of On YourVar Gosub.

Try it...

[Darrel Taylor]

That's why the GOSUB was placed inside the while loop.

That gosub calls the SubSwitcher: which then redirects to the appropriate subroutine. Then the subroutine does the return.

The return in the SubSwitcher: is only there in case the variable is larger than the number of available subroutines. Otherwise, it would run subName0 which would be in error.

The subroutines don't return to the SubSwitcher, they return back to the while loop.

HTH,

[mister_e]

How dare you reply exactly at the same time

[Darrel Taylor]

That seems to happen alot with us Steve.

I should also note here, that Sayzer's examples will work just fine too.

Just different ways to skin a dog.
(sorry, I'm a cat person)
<br>

[sayzer]

...

The subroutines don't return to the SubSwitcher, they return back to the while loop.

...

If there is no typo here, did I misunderstand this statement then ?



-----------------------------

[rhino]

I'm a little confused as well. I guess as a test, you can put a statement under the branch instruction to flash an LED or something to see what happens. The way I read it is it will return back to the while loop because there is nothing else in the SubSwitcher routine to execute after the branch statement, just another return back to the while loop.