topic Re: how to develop a custom task executer in FlexSim Forum

how to develop a custom task executer

Troy7 — Fri, 19 May 2023 04:05:07 GMT

[ FlexSim 22.2.0 ]

I am trying to replace the build-in task executer to my model below:

and I want to add some custom logic, animations, but I don't know how to do it, it cannot be found any tutorials in user manual, any help would be appreciated.

Re: how to develop a custom task executer

jason_lightfoot_adsk — Fri, 19 May 2023 08:43:04 GMT

It depends on what aspects you need to customize. If it's the finer detail of the load and unload behaviour outside of any travel task the you can customize the offset travel.

Then the first approach to try would be using a Basic TE with you own definitions for the offset travel. You add that using triggers for beginOffset, uopdateOffset and finishOffset.

If it's visuals you can change the base shape but just importing or add components to animate or apply kinematics in the drawsurrogate part of the visual attributes.

You can also create a module for your own class of TE if needed, but I would try the other options first.

Re: how to develop a custom task executer

arunTTT2P — Fri, 19 May 2023 09:13:29 GMT

This looks like a container terminal quay crane. Have you checked FlexTerm?

https://www.flexterm.com/

Re: how to develop a custom task executer

Troy7 — Fri, 19 May 2023 11:59:27 GMT

My company only have FlexSim licence, so I am afraid I have no choice

Re: how to develop a custom task executer

joerg_vogel_HsH — Fri, 19 May 2023 12:11:36 GMT

Even if my approach look a bit weird, you could see this crane as a sub model.
A transporter is travelIng on a network. This network is inside of a plane, which is a subnode of an Automated Guided Vehicle object. A dispatcher is dividing incoming transport jobs into a coordinated tasksequence to let travel the AGV and the transporter.

Re: how to develop a custom task executer

Troy7 — Fri, 19 May 2023 12:13:09 GMT

Thank you for your answer. It sounds complicated, I'm not sure if I can finish it, are there any tutorials for that?

Re: how to develop a custom task executer

Troy7 — Fri, 19 May 2023 12:47:01 GMT

Thank you for sharing this experience. Your approach may seem unconventional, but it highlights the importance of viewing systems as composed of interdependent sub-components. I am inspired by your experience, Thanks a lot.

Re: how to develop a custom task executer

jason_lightfoot_adsk — Fri, 19 May 2023 16:17:32 GMT

There's not much material about. There's this example in another post.

Other than that you can look at the Basic TE documentation and the same for Kinematics. Note that you can also using draw code to fill in the gaps. So for example while you might change the height of the crane 'grab' you can draw the lines from the grab to the point of suspension using code - it has no bearing on the timing or activity or object location so it doesn't matter how frequently it's drawn or if it is at all (if the 3D view is closed or you're running replications).

Re: how to develop a custom task executer

julie_weller — Wed, 24 May 2023 16:37:19 GMT

Hi @Troy, was one of Joerg Vogel's or Jason Lightfoot's answers helpful? If so, please click the "Accept" button at the bottom of the one that best answers your question. Or if you still have questions, add a comment and we'll continue the conversation.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always unaccept and comment back to reopen your question.

Re: how to develop a custom task executer

joerg_vogel_HsH — Fri, 26 May 2023 05:31:05 GMT

@Troy, you have started a new question. I add a link to an older thread. https://archive.flexsim.com/threads/thread3149.html. But I still think you get to a faster result, if you compose a sub model of objects, rather than if you build an object from a custom basic taskexecuter.
You can naturally customize a standard crane. Every part of main functionality already exists. You need only to add at each node level new objects, replace their shapes and set default node objects invisible.