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thegto
Beginner


Joined: 12 Jun 2007
Posts: 20

PostPosted: Thu Nov 23, 2023 11:54 pm   

How does #MATH works?
 
Code:

#MATH AABB {100/50}; #SHOW @AABB


Here what I got from #SHOW
Code:

100/50


Shouldn't I get result 2 ?

I followed this help file
http://forums.zuggsoft.com/modules/mx_kb/kb.php?page=3&mode=doc&k=220

CMUD Pro 3.34
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chaossdragon
Apprentice


Joined: 09 Apr 2008
Posts: 168

PostPosted: Fri Nov 24, 2023 4:24 am   
 
#MATH is depreciated you can just use () to eval

try

$AABB = (100/50)

#SHOW $AABB
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Pauley
Beginner


Joined: 17 May 2024
Posts: 13

PostPosted: Fri Jul 05, 2024 10:34 am   
 
I cannot get #MATH to work, curious as to what I'm doing wrong.

I have a spell's duration which is 2 times your current wisdom + 200 (so the total = X seconds)

I made a trigger to capture my wisdom in the @WIS variable
then I made a IWDUR variable (the spells duration) which contains this:

#MATH (200+@WIS+@WIS)

Let us say for this example that my wisdom is 150, so that the WIS variable is 150 - the math becomes 200+150+150=500 seconds duration

However, when I type #SHOW @IWDUR, the output in the mud is this:

"#MATH (200+150 +150 )"

So it is not doing math on it at all..
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mikeC130
Apprentice


Joined: 03 Jul 2006
Posts: 110

PostPosted: Fri Jul 05, 2024 10:37 pm   
 
No, #MATH doesn't do math in cMud - it isn't actually a command any more, so the parser is treating it as just a string of text. It is expanding your variables, but not doing anything with them as the expression is considered a line of text.

Get rid of the #MATH command and just leave the expression (200+@WIS+@WIS) and it should evaluate it.

ETA: It is still in the list of commands, so it *SHOULD* work, but it doesn't seem to in your example and isn't needed in any case, so just leave it off.
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Pauley
Beginner


Joined: 17 May 2024
Posts: 13

PostPosted: Sun Jul 07, 2024 7:50 am   
 
mikeC130 wrote:
No, #MATH doesn't do math in cMud - it isn't actually a command any more, so the parser is treating it as just a string of text. It is expanding your variables, but not doing anything with them as the expression is considered a line of text.

Get rid of the #MATH command and just leave the expression (200+@WIS+@WIS) and it should evaluate it.

ETA: It is still in the list of commands, so it *SHOULD* work, but it doesn't seem to in your example and isn't needed in any case, so just leave it off.


Trying this with #ECHO or #SHOW @IWDUR (expecting the final result "500" to be displayed on screen) I find that it still yields "200 150 150" in the mud window

The variable IWDUR contains only this phrase "(200+@WIS+@WIS)" and for some reason refuses to process it in any other way than as just plain text to be displayed in the mud window

Quite possibly i have implemented this in the wrong way

Edit1:

If i type "#SHOW (2+2)" it displays "4"
If I type "#SHOW (200+150+150)" it displays "500"

but here comes the snag, when i type "#SHOW (200+@WIS+@WIS)" it displays "200 150 150"

Edit2:

"#MATH TEST (@WIS+@WIS)" yields "150 150" when I type"#SHOW @TEST" while:
"#MATH TEST {@WIS+@WIS}" yields "150 + 150" when I type"#SHOW @TEST"

How confusing that it doesn't want to compute it, it just displays the numbers as they are

Edit3:

Also trying "#MATH TEST (@WIS*2)" yields "0" with "#SHOW @TEST" - so it's clearly doing something to it, but it fumbles and returns 0
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Pauley
Beginner


Joined: 17 May 2024
Posts: 13

PostPosted: Sun Jul 07, 2024 4:54 pm   
 
Big oooof

The problem was that the trigger capturing my wisdom also captured one blankspace :3

Works as it should now

Edit:
Changed a %1 to "%s(%n)%s" in the capture trigger to avoid getting the blankspace in the variable, this fixed the problem
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shalimar
GURU


Joined: 04 Aug 2002
Posts: 4682
Location: Pensacola, FL, USA

PostPosted: Sun Jul 07, 2024 11:43 pm   
 
The #MATH command has been officially deprecated and made redundant, any equation in parentheses will try to evaluate itself, use nested parenthesis when you need to force order of operations.

using %1 as a wildcard is bad form to begin with, that is a captured variable reference
if you just want a numeric value use the %d wildcard, %n is specifically for signed +/- numbers.

P.S. %trim will remove trailing spaces from both sides
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Pauley
Beginner


Joined: 17 May 2024
Posts: 13

PostPosted: Mon Jul 08, 2024 5:38 am   
 
shalimar wrote:
The #MATH command has been officially deprecated and made redundant, any equation in parentheses will try to evaluate itself, use nested parenthesis when you need to force order of operations.

using %1 as a wildcard is bad form to begin with, that is a captured variable reference
if you just want a numeric value use the %d wildcard, %n is specifically for signed +/- numbers.

P.S. %trim will remove trailing spaces from both sides


Thank you for the advice, I'm struggling a bit with navigating all the different stuff and what would be best to use (and there's so much to sift through)
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shalimar
GURU


Joined: 04 Aug 2002
Posts: 4682
Location: Pensacola, FL, USA

PostPosted: Mon Jul 08, 2024 10:10 am   
 
General speaking, there is no real 'best' way to do things, just a bunch of tools in the toolbox

The #HELP command can be used with any command or function to read the help files

#HELP #MATH
#HELP %clip
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Pauley
Beginner


Joined: 17 May 2024
Posts: 13

PostPosted: Mon Jul 08, 2024 1:22 pm   
 
shalimar wrote:
General speaking, there is no real 'best' way to do things, just a bunch of tools in the toolbox

The #HELP command can be used with any command or function to read the help files

#HELP #MATH
#HELP %clip


Oh wow, that's incredibly helpful, I spent hours yesterday looking through pages full of commands and all kinds of stuff just trying to find a list of %d, %n, %1, etc to see all my options and what their definitions are
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shalimar
GURU


Joined: 04 Aug 2002
Posts: 4682
Location: Pensacola, FL, USA

PostPosted: Mon Jul 08, 2024 11:37 pm   
 
There is a link to all the wildcard characters in #HELP #TRIGGER
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