How to flag special object in the navigation mesh

[Jacky0708Participant]

Hi , I am trying to let my NPC use a ladder to climb up to the roof , how can I flag the ladder object in the navigation mesh ? I am guessing Graph Tags may be something related to this , but couldn’t find any useful document to explain how to use the Graph Tags in the navigation system. any idea ?

Thanks.

• This topic was modified 2 months, 2 weeks ago by  Jacky0708.

[primeKeymaster]

The RAIN Navigation system doesn’t (currently) help you with this. We’re not yet supporting off mesh links, so creating a path that goes up a ladder isn’t possible. We’re expecting to add new capabilities to deal with ladders, climbing, jump down points, etc. in version early 2015.

Until then, you could use Navigation Targets or Entity/Aspects to mark locations of climbable ladders. You could add information to pair these locations with the areas they take you to, then have a little bit of logic to help with movement. For example:

1) Let’s say you have 5 ladders that take you up to the top of 5 different buildings. You could place a nav target at the base of each ladder called “Area 1 Up”, “Area 2 Up”, etc. At the top you might have “Area 1 down”, “Area 2 down”, etc.

2) When you know your destination is in “Area 1″, then you would do something like:
SEQUENCER
— MOVE moveTarget = navigationtarget(“Area 1 up”)
— CUSTOM ACTION -> some code or a mecanim animation to climb the ladder
— MOVE moveTarget = final destination

This definitely requires a little extra work for now, but is doable. Once we get offmesh links in, the pathfinding system will deal with this for you.

[Jacky0708Participant]

thanks a lot for your explanation , it saves me lots of time to keep searching for the solution, purely understand what you suggested and will approach it in this way , and also keep my eyes on the new version of RAIN AI

[Author]

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