GetDistance

[cassius]

Can anyone tell me, can GetDistance "see" over or through hills in terrain?

[thehankinator]

I am pretty sure GetDistance() only takes into account the position of the 2 entities, ignores everything else.

 

I think under the hood GetDistance is doing the same thing as:

(entity1:GetPosition(true) - entity2:GetPosition(true)):Length()

[cassius]

Yea. Its just that one of my enemy characters stops following main character sometimes but not always.

I wondered if hills got in the way.

[thehankinator]

Yea. Its just that one of my enemy characters stops following main character sometimes but not always.

I wondered if hills got in the way.

I've had the same problem with Follow(), I can't remember what I had done to fix it... or if I fixed it at all. Two things stick out in my mind, 1) What does Follow() do when the player is suddenly unreachable? Like if they jumped onto a platform that the navmesh doesn't connect to. 2) Is your script continuously calling Follow()?

 

It'd be nice if the Navigation API had a function like IsFollowing() so that you could detect when the path failed for some reason.

[cassius]

Yeah. I;m using c++ but follow is in main loop and operates as long as enemy is alive.

[thehankinator]

Yeah. I;m using c++ but follow is in main loop and operates as long as enemy is alive.

Try calling Follow() only once. I think the intended use is to call Follow() to start the following, then only call it again if you change what the entity is following.

[cassius]

looks like the navmesh does not cover some hills.That might be the problem.

[f13rce]

If you want distance to be checked with the hills, you can store the waypoints and calculate the distance between each waypoint.

 

When looking at my old code, I think it's being done something like this:

std::vector<Vec3> waypoints;
//Vec3 targetPos = Vec3(60);

world->navmesh->FindPath(model->GetPosition(true), targetPos, waypoints);
float distance = 0;
for (uint16_t i = 0; i < waypoints.size() - 1; ++i) // you can also use unsigned int instead
{
distance += waypoints[i].DistanceToPoint( waypoints[i + 1] );
}
printf("Total distance is: %0.2f\n", distance);

[cassius]

Interesting. Thanks.