topic Re: A* Navigation and Travel Task Sequences in FlexSim Forum

A* Navigation and Travel Task Sequences

jonathan_s3 — Thu, 05 May 2022 14:39:09 GMT

[ FlexSim 21.0.10 ]

My operator needs to go to a queue to refill their machine. I'm using Process flow to control the task sequence. I need them to follow a specified path so I put in an A* path. This apparently conflicts with the Travel Task Sequence (see screenshot). How do I fix this? (Software 21.0.6)

Re: A* Navigation and Travel Task Sequences

regan_blackett — Thu, 05 May 2022 14:47:55 GMT

Based on your screenshot of the error, it appears the travel destination isn't being properly assigned to the traveler. Where it says "involved1" it should reference a destination object, but since it says "NULL" that would mean the traveler was assigned a bad reference for a travel task's destination. Recheck how that destination is being assigned to make sure that the object is valid. If you post your model we can help track it down.

Re: A* Navigation and Travel Task Sequences

jonathan_s3 — Thu, 05 May 2022 15:13:06 GMT

I've e-mailed you my model. Thank you.

Once we figure it out a description of the fix can be posted here.

Re: A* Navigation and Travel Task Sequences

jonathan_s3 — Thu, 05 May 2022 15:38:17 GMT

Figured it out. I had an incorrect destination in the "Travel: Install New Spool" task. The destination was listed as "Item" instead of a proper object.

Re: A* Navigation and Travel Task Sequences

kavika_faleumu — Mon, 09 May 2022 21:17:23 GMT

Hi @Jonathan, was Regan Blackett's answer helpful? If so, please click the "Accept" button at the bottom of their answer. 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.