node parameter expression / function question

[ford77]

Hi

I`d like to group RBD objects based on impact.

So far I can do this by adding an emty Hitdata data

with a Hasbeenhit record set to 0

then modifieing it`s value to 1 when the

dophasfield("dopnet",$OBJID,"Impacts","Impacts",0,"impulse")

expression evaluates true. Then I group the objects

with the group expression

dopfield("dopnet",$OBJID,"Hitdata","Options",0,"Hasbeenhit") == 1

The question is, as each rbd object has different

number of impact records, how do I check and filter

each rbd objects to be able to group only objects which have

an impact greater then a certain value?

I have a for loop expression in mind:

for i = 0 to doprecordnum(...impacts...)

if dopfield("dopnet",$OBJID,"Hitdata","Options", i ,"Hasbeenhit") > 10

return 1

else

return 0

can anybody help me with the exact expression syntax?

is it possible to use such expressions/functions in node parameters?

thanks!

[DanBode]

It might be helpful to take a look at this old challenge thread.

http://forums.odforce.net/index.php?showtopic=4830&hl=

[mawi]

I´m a bit confused to what you are trying to do since dopnumrecords returns number of impacts.

So:

dopnumrecords($DOPNET,$OBJID,"Impacts","Impacts") > 10

Will return 1 if you are having more impacts then 10.

From the help.

EXAMPLES

dopnumrecords("/obj/dopnet1", "object1", "Impacts", "Impacts")

Returns the number of records in the record type called "Impacts"

found in the data called "Impacts", which is owned by the object

"object1"

[ford77]

DanBode:

Thank you! I found a hip there and I found what I wanted.

mawi:

the dopnumrecords returns the number of impacts of an object.

But the impacts number itself is not enough by itself.

I needed a loop to go through all impact records one by one

and group the objects based on the highest/lowest

impact value. I only wanted to group objects which have

an impulse value higher then a certain value.

Here`s the expression syntax:

{
    if ( dopfield ("..", $OBJID, "Hitinfo", "Options", 0, "hitnum") > 0 )
        for ( i = 0; i < dopnumrecords ("..",$OBJID,"Impacts","Impacts"); i++ )
        {
            if ( dopfield("..",$OBJID,"Impacts","Impacts",i,"impulse") > 10 )
            {
                return $OBJID;

            }
        }
}

[mawi]

DanBode:

Thank you! I found a hip there and I found what I wanted.

mawi:

the dopnumrecords returns the number of impacts of an object.

But the impacts number itself is not enough by itself.

I needed a loop to go through all impact records one by one

and group the objects based on the highest/lowest

impact value. I only wanted to group objects which have

an impulse value higher then a certain value.

Here`s the expression syntax:

{
    if ( dopfield ("..", $OBJID, "Hitinfo", "Options", 0, "hitnum") > 0 )
        for ( i = 0; i < dopnumrecords ("..",$OBJID,"Impacts","Impacts"); i++ )
        {
            if ( dopfield("..",$OBJID,"Impacts","Impacts",i,"impulse") > 10 )
            {
                return $OBJID;

            }
        }
}

Glad you solved it.

Couldn´t figure out why you were interested in grouping by number of impact records.

Max impulse makes more sense.