How to add or remove a trigger on an operator from within a user command?

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Jon Abbott asked Oct 28, '16 Jon Abbott commented Nov 17, '16

How to add or remove a trigger on an operator from within a user command?

I would like to have a user command that can add a couple lines of code to an operator's OnResourceAvailable trigger, and also remove the trigger. Currently there is no code on this trigger so there is no need to worry about it being overwritten. Similarly, when code is removed it can be removed all at once. I'm looking for a solution that works specifically via user command and not a process flow. It would also need to work while the model is running. Thanks in advance for your help.

Software Version:

FlexSim 16.2.1

operator task executer trigger user command onresourceavailable

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Answer 1 · 2016-10-28T17:00:49Z

Jon Abbott answered Oct 28, '16

Thanks @Jörg Vogel and @Matthew Gillespie! Here is a copy of the end result:

/**Custom Code*/

// define Operator to consider
string OpName = "Operator 1";

// identify the tree node for the operator in question
treenode Operator = node(OpName,model());

// identify the tree node for the operator's OnResourceAvailable trigger
treenode OperatorORATrigger = getvarnode(Operator, "onresourceavailable");

// define the run mode. commenting out the next line will delete the trigger
var runmode = "add"; // add the trigger

// define a blank trigger code string
string triggercode = "";

if (runmode == "add")
{
    // define code to be added to the operator's OnResourceAvailable trigger
    triggercode = "/**Custom Code*/; pd(1); pr();";
}

setnodestr(OperatorORATrigger,triggercode);
buildnodeflexscript(OperatorORATrigger);

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Answer 2 · 2016-10-28T15:55:27Z

Joerg Vogel answered Oct 28, '16 Jon Abbott commented Nov 17, '16

The Trigger is first of all a node which contains string data. That data is activated to be flexscript.

setnodestr(getvarnode(centerobject(current, 1), "onresourceavailable"),"pr();pd(1);");
buildnodeflexscript(getvarnode(centerobject(current, 1), "onresourceavailable"));

The centerobject is a Taskexecuter. I add the commands pr() and pd(1) to print a <CR> and "1" into the output console.

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Joerg Vogel commented · Oct 28, 2016 at 03:57 PM

There are several problems creating an executable source code during a simulation run, and maybe the example contains still some errors, but it worked in a small model.

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Jon Abbott Joerg Vogel commented · Oct 28, 2016 at 04:01 PM

Thanks @Jörg Vogel! I will give this a try. For deleting the trigger, I'm guessing that destroyobject will suffice?

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Matthew Gillespie ♦♦ Jon Abbott commented · Oct 28, 2016 at 04:05 PM

Just set the string data to be an empty string and rebuild the FlexScript.

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