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Newbie Joined: 18 Jul 2004 Posts: 3

I have a working alias called "offset" that shows what the time would be if you add or subtract a certain number of minutes from the current time, using the %time(h:nn AM/PM) format.

#alias offset {#math time_total %number(%time(hh))*60+%number(%time(nn))+%1
#if (@time_total >= 0) {#math time_range @time_total-24*60*(@time_total/(24*60))}
#if (@time_total < 0) {#math time_range @time_total-24*60*(@time_total/(24*60))+24*60}
#no time_range has a limit between 0 to 1440, inclusive
#math time_hour @time_range/60
#math time_minute @time_range\60
#if ((@time_hour >= 12) and (@time_hour <= 23)) {#var time_period PM} {#var time_period AM}
#if ((@time_hour >= 13) and (@time_hour <= 24)) {#math time_hour @time_hour-12}
#if (@time_hour = 0) {#var time_hour 12}
#echo {Time(%1) = @time_hour:%if(%len(@time_minute)=1,"0")@time_minute @time_period}
#unv time_total
#unv time_range
#unv time_hour
#unv time_minute
#unv time_period}

Usage: offset <negative or positive number>

If your 24-hour clock reads 12:00 then

offset -1 would echo -> Time(-1) = 11:59 AM
offser 0 would echo -> Time(0) = 12:00 PM
offset 1 would echo -> Time(1) = 12:01 PM
offset 90 would echo -> Time(90) = 1:30 PM
offset 720 would echo -> Time(720) = 12:00 AM

Question:

Is it possible to make this alias into a user-defined function? If so, what commands should I use to construct it?

I want a function like @offset(45) would output "12:45 PM" using the above example.

Thanks, Elric SlothMUD III

SubAdmin Joined: 18 Nov 2001 Posts: 5187

This is possible. It gets long enough that it should be considered next to impossible to do with out an intermediate variable. Since the creation or assignment of a variable is done by a command in zScript, it isn't meant to be done within a function. Still not impossible though. To make it shorter I used 2 #FUNCTIONs
#FUNCTION offset1 {%concat(%eval(%1/60),":",%if(%mod(%1,60)<10),"0"),%mod(%1,60),%if(%eval(%1/60)>12," PM"," AM"))}
#FUNCTION offset {@offset1(%eval(%time("hh*60+nn")+%1))}

MASTER Joined: 28 Nov 2000 Posts: 4817 Location: USA

In 24-hour format. I'll leave you the conversion to 12-hour format.
#FUN offset {%eval((%time( hh) + ((%time( nn) + %1) / 60)) \ 24):%if( %eval((%time( nn) + %1) \ 60) < 10, 0)%eval((%time( nn) + %1) \ 60)}

I see Vijilante beat me on the reply. This function will not handle negatives if they are greater than the current minutes. It does fine with positive numbers.

Newbie Joined: 18 Jul 2004 Posts: 3

Ahhh I can use nested functions Shocked

that is a *BIG* help

Here is a working script based on the above posts, maybe someone else will find it useful:

#function time_fn {@time_fn_range(%eval(%time(hh*60+nn)+%1))}
#function time_fn_range {@time_fn_format(%eval(%1-24*60*(%1/(24*60))+%if(%1<0,%eval(24*60),0)))}
#function time_fn_format {%concat(%if(%eval(%1/60)=0,12,%if((%eval(%1/60)>=13) and (%eval(%1/60)<=24),%eval(%1/60-12),%eval(%1/60))),":",%if(%mod(%1,60)<10,"0"),%mod(%1,60),%if((%eval(%1/60)>=12) and (%eval(%1/60)<=23)," PM"," AM"))}

There is no limits to input, any positive or negative number will work.

If your 24-hour clock reads 12:00 then

#echo @time_fn(-1) -> 11:59 AM
#echo @time_fn(0) -> 12:00 PM
#echo @time_fn(1) -> 12:01 PM
#echo @time_fn(90) -> 1:30 PM
#echo @time_fn(720) -> 12:00 AM

Thanks for help guys, Elric