How can I count "unique" collisions

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David VC asked Dec 20, '18 tannerp edited Mar 14, '19

How can I count "unique" collisions

Hi

I have following problem:

I have operators which can collide. Now I want to count the number of unique collisions. For example when the operators are loading at the same queue the Collision trigger Will fire several times, but in reality I want to count this as 1 Collision. Is there are a (simple) solution for this problem?

Best Regards

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collision

Answer 1 · 2018-12-20T16:45:39Z

Phil BoBo answered Dec 20, '18 Gabriel Morgante commented Mar 13, '19

The objects that can collide have a variable that stores whether they are currently in a collision. This variable is 0 when the collision first occurs. You can use this variable to only increment your counter at the beginning of each collision. Something like this:

double prevcollision = getvarnum(thisobject,"incollision");
if (prevcollision == 0)
	current.collisionCount++;

The "turn to the left" pick option in the Handle Collision trigger shows an example of using this variable.

· 3

Gabriel Morgante commented · Mar 13, 2019 at 11:53 AM

@phil.bobo

I am new to FlexSim so forgive me if this is a stupid question but how would I implement this code you shared?

I have 3 cranes working in the same frame on my model and I need to count their "unique" collisions as David said. So where should I implement this code so I can create the collision counter on a dashboard?

Thank you!

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Phil BoBo ♦♦ Gabriel Morgante commented · Mar 13, 2019 at 02:23 PM

You put the code into the Handle Collision trigger:

Here's a model showing that code implemented in that trigger. countcranecollisions.fsm

It also shows a Model Documentation dashboard widget that displays the current count on the label.

It also has a Statistics Collector that shows how you can record those values over time and plot them onto a line graph in the dashboard.

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countcranecollisions.fsm (25.7 KiB)

handle-collision.png (28.8 KiB)

crane-collision-count.png (114.2 KiB)

Gabriel Morgante Phil BoBo ♦♦ commented · Mar 13, 2019 at 03:25 PM

@phil.bobo
Phill, my poor english isnt' enough to express how much I thank you... You are the MVP!

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