Download

How do i use UNavigationSystem::GetRandomPointInRadius in c++ ?

https://docs.unrealengine.com/latest/INT/API/Runtime/Engine/AI/Navigation/UNavigationSystem/GetRandomPointInRadius/1/index.html

I can’t get it to work, are there any detailed documentations about that?

Rama’s Get Random Point in Radius For You

Here’s the wrapper I wrote!

I use this inside a custom Path Follow component.

I have wiki on how to set up a custom Follow Component here:

Custom AI Path Follow Components In UE4


**Get Random Point in Radius**



```


//YourPathFollowComponent.h
bool GetRandomPointInRadius(const FVector& Origin, float Radius, FVector& OutResult);

//.cpp
bool UJoyPathFollowCompHighest::GetRandomPointInRadius(const FVector& Origin, float Radius, FVector& OutResult)
{
	UNavigationSystem* NavSys = UNavigationSystem::GetCurrent(GetWorld());
	if(!NavSys) 
        {
             return false;
        }
	//~~~~~~~~~~~~~
	 
	FNavLocation Result;

        //This is a wrapper for UE4 version
	bool bSuccess = NavSys->GetRandomPointInRadius(Origin, Radius, Result);
	
        //Out
	OutResult = Result.Location;
	return bSuccess;
}


```



Core Code, Usable Anywhere

You dont really need to put this in a PathFollowComponent, you can just run the code anywhere!



UNavigationSystem* NavSys = **UNavigationSystem::GetCurrent**(GetWorld());
if(!NavSys) 
{
     //could not get UE4 Nav system
     return;
}
//~~~~~~~~~~~~~
 
FNavLocation Result;

bool bSuccess = NavSys->**GetRandomPointInRadius**(Origin, Radius, Result);

if(!bSuccess)
{
   //report non success case
   return;
}


//Success!
//FVector result is
**//Result.Location**




Enjoy!

:)

Rama

Thanks Rama :slight_smile: