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Can anyone break down and describe the "NavMesh" from content example ?

I am completely new to Unreal Engine, and our game needs NavMeshes for AI movement. I tried understanding the official documentation below, but couldn't understand it clearly. "https://docs.unrealengine.com/latest/INT/Resources/ContentExamples/NavMesh/1_1/index.html"

Could anyone break down and describe setting up of NavMesh in UE4 or link me to any other documentation/tutorial that explains it in detail?

Thank you in advance.

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asked Mar 31 '14 at 09:45 PM in Blueprint Scripting

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2 answers: sort voted first

Found the answer to my problem, Apparently I had to spawn default controller along with AI. The below Blueprint works and does what I want to.

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answered Apr 01 '14 at 02:39 AM

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Hey gameme,

Unfortunately the documentation is referring to a slightly older version of that level, and we are working to update that. But the principles are the same.

A Navmesh is set up as a volume. In the Modes tab, select Volumes and then scroll down to Nav Mesh Bounds Volume. Placing one in your level so that your map is within the volume's bounds will create a NavMesh Actor that you can see in your level if you press P or go to Show and check Navigation to on. The Nav Mesh will be built automatically.

Did you have any specific questions about setting up your Nav Mesh?


Ben Halliday

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answered Mar 31 '14 at 10:10 PM

avatar image gameme Apr 01 '14 at 02:07 AM

Thank you for the answer. I realized I have a even primitive task at hand.

  • I want to spawn an AI in-front of the player character,

  • get the reference to it,

  • and do a simple move task on the AI to a target point defined in the level.

Since am new to UE4, am using "Blueprint only" to do this, and just to be faster I am using the existing "NavMesh" umap from content example . I have attached the screenshot of my blueprint. Here is what is happening,

  • The new AI (Existing class of the Umap) is being created at desired location,

  • return value of the spawn does not give any reference to the controller, I even tried to set an AI controller, which I am not sure if I should be doing.

  • And I assume that is the reason the Simple move function is not working.

If anyone sees an obvious mistake kindly help me out.

Thank you.

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