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Paint area of navmesh


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I'd be careful with that as you might have walkable ares to another close island that has waist high water only. I understand that's probably easier for you to do but it'll limit us some and won't be as flexible for the users.

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Actually, Source uses brushes to prevent navmesh building I'm sure you can just make an invisible brush with no collision, and set the obstacle mode to true and it'll work that way. This way, you don't need to hide anything. Just wish the brushes didn't have to be invisible as my old solution of using a transparent texture, then making it invisible during run time conflicts with GI building.

 

But, I agree, there should be a height limit in the navmesh builder or something. So I'm not saying that this isn't a bad suggestion, but it's not like there isn't other ways around this...

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Given we have no donut csg trying to do this with the available csg brushes we have with a circle island would be a nightmare to work with. How would you do it? About 50 boxes? Give is a donut and then we can make a giant one around the island.

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  • 5 months later...

I had to do this do for a strategy game with multiple islands.

1. Make 1 giant csg box at the same height of the water going all the way down

2. Check the navmesh obstacle option

I considered doing this too but didn't try it yet. Knowing it worked for you, I'll give it a shot.

 

Still would love to know the code Josh suggested though; how to access and properly remove navmesh triangles. And bonus points if we can put the triangles back (didn't we have an issue with dynamic door navigation that that would solve?).

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I considered doing this too but didn't try it yet. Knowing it worked for you, I'll give it a shot.

 

Still would love to know the code Josh suggested though; how to access and properly remove navmesh triangles. And bonus points if we can put the triangles back (didn't we have an issue with dynamic door navigation that that would solve?).

A quick test reveals the following show that this trick still works.

 

1. Place a box with its bottom on the ocean line.

post-45-0-37451800-1484162370.jpg

 

2. Make the box higher than any mountain, otherwise the terrain will create a navmesh going from the terrain to the top of the box.

post-45-0-83091000-1484162365_thumb.jpg

 

 

3. Generate navmesh and tada: shoreline. note that you still have a navmesh on the ocean floor, but the agents can't reach it.

post-45-0-72669700-1484162362_thumb.jpg

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