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Rorso
Wizard
Joined: 14 Oct 2000
Posts: 1368
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 Posted: Sun Oct 03, 2004 4:36 pm
#menu and variable caption
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Hello,
Does anyone know why this doesn't work?
test="hello"
#menu @test {#echo test} "menu"
What happens is that @test is not expanded. I have even tried using the [] syntax without much success. That is this doesn't work either:
#menu {[@test]} {#echo test} "menu"
Thanks for helping me solve this :-). |
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Rorso
Wizard
Joined: 14 Oct 2000
Posts: 1368
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Posted: Sun Oct 03, 2004 4:38 pm
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Ok I found a method to solve this myself :-).
To solve it I found that this works:
#exec %concat( "#menu {", %roomname( ), "} {#echo test} ", "menu")
Probably because #exec fully expands its arguments unlike #menu. Still this seems to be a pretty odd thing with zScript. Does anyone know if this is a good way to solve this problem or is there any better method? |
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Last edited by Rorso on Sun Oct 03, 2004 4:42 pm; edited 1 time in total |
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nexela
Wizard
Joined: 15 Jan 2002
Posts: 1644
Location: USA
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Posted: Sun Oct 03, 2004 4:42 pm
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*Destroys his last post*
Your right :P |
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Last edited by nexela on Sun Oct 03, 2004 4:49 pm; edited 1 time in total |
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Rorso
Wizard
Joined: 14 Oct 2000
Posts: 1368
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Posted: Sun Oct 03, 2004 4:47 pm
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I updated my own fix as it didn't work well with the syntax checker. It works for you? :-). I might need to explain the issue a bit better as it is a bit odd.
When #menu @test {#echo test} "menu" is executed a menu with the caption "hello" should be created in the menu class "menu". What happens though is that it creates a menu with the caption @test. That is @test isnt expanded. You need to check in the settings editor to verify this as when you right-click it'll expand the variable, but then it might be the wrong caption. |
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nexela
Wizard
Joined: 15 Jan 2002
Posts: 1644
Location: USA
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Posted: Sun Oct 03, 2004 4:58 pm
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| Quote: |
| I have even tried using the [] syntax |
Well actually you want <> to force expansion not [] to force evaluation But that doesn't work either.... I would have to agree that you are correct in assuming that #MENU doesnt expand. Weather or not this is intentional I dunno, Because thinking about it the correct syntax for making the caption be a variable would be @@test right (I think that is how delayed expansion works) |
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Vijilante
SubAdmin
Joined: 18 Nov 2001
Posts: 5182
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Posted: Sun Oct 03, 2004 6:45 pm
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Yes, #MENU like most other setting creation commands treats some parameters literally. I am trying to think of a nice way to put this into the help, but it is starting to get crowded with links. I may yet come up with something. Of course that means adding that to every command and function topic, and the wonderful pleasure of researching all those that the typing in the command/function wizard leaves unclear.
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The only good questions are the ones we have never answered before.
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LightBulb
MASTER
Joined: 28 Nov 2000
Posts: 4817
Location: USA
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Posted: Sun Oct 03, 2004 7:33 pm
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| Quote: |
| When #menu @test {#echo test} "menu" is executed a menu with the caption "hello" should be created in the menu class "menu". |
WRONG! There might be people who actually want their menu captions to be variables (and their menu actions also), so that their menus can be quickly changed by just altering the variables. This is far more likely than people who want to make menu items without knowing what the caption will be. Anyone who does know what the caption should be could, of course, just use the actual caption instead of first putting it in @test.
"Problems" like this usually come up when someone is trying to "simplify" zMUD for someone else, by writing aliases so that a beginner will be able to do all the things that an advanced user can without having to learn all the things an advanced user knows. It seldom works. zMUD already has a good, logical, command structure and attempts to rewrite it usually increase the complexity rather than reducing it.
What you want can be done quite easily with #EXEC. Yes, the syntax checker will report an error but just ignore it. You are either advanced enough to write good syntax without the checker or you shouldn't be trying to do stuff like this.
#EXEC {#MENU @test {#ECHO test} "menu"}} |
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_________________
LightBulb
Senior member
Most scripts in this forum are written for Command Line entry.
Don't even open the Settings Editor unless its use is specified or obvious. |
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Rorso
Wizard
Joined: 14 Oct 2000
Posts: 1368
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Posted: Sun Oct 03, 2004 8:59 pm
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| LightBulb wrote: |
"Problems" like this usually come up when someone is trying to "simplify" zMUD for someone else, by writing aliases so that a beginner will be able to do all the things that an advanced user can without having to learn all the things an advanced user knows. It seldom works. zMUD already has a good, logical, command structure and attempts to rewrite it usually increase the complexity rather than reducing it.
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In this case I actually try to make menus dynamically as portals are created. That way I can easily know what portals are active.
| Quote: |
What you want can be done quite easily with #EXEC. Yes, the syntax checker will report an error but just ignore it. You are either advanced enough to write good syntax without the checker or you shouldn't be trying to do stuff like this.
#EXEC {#MENU @test {#ECHO test} "menu"}} |
I guess this is a bug in the syntax checker? I use to say that if you never dare to try new stuff, you'll probably never learn them  . |
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