Force NPCs to avoid each other

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#1

Hi. Here I am again, after many hours of stress of trying to make NPCs avoid each other. I made many solutions but they all didn’t work, which is why I am here.

How can I do this effectively so that they avoid each other most of the time? Please leave some ideas below because I am getting really stressed and desperate. Thanks for your help!

#2

There are many ways to approach this, you could do it by name or add values inside to indicate their “team.” That is what I would do when programming NPC’s, I usually add some Value with the name of their “team” and use an if statement to check for that value. Here is an example:

NPC (Model) > Bot (BoolValue)

if not target.Parent:FindFirstChild("Bot") then -- target would just be the basepart of the character the NPC wants to chase after
    -- code here
end
#3

To avoid eachother you just check for a value, or attribute for the bot like @CapnFry said.

#4

Hi. Sorry for the late reply.

I already have my NPCs grouped together in a group, where they know all of the people in the group so they don’t really need a value to keep track if they are a bot. To me, it doesn’t matter if groups collide with groups. But, I like the idea that you brought up. I will raycast, then check if it is part of the group, then avoid it.

#5

PathfindingService basically finds a route around objects; it’s fairly complex but I reccomend using it.

#6

Ok. I will try using that service.

#7

It’ll avoid objects in it’s path essentially instantly. It’s better then using math to get a assumption for where it needs to go back.

#8

Wow, but I have a question. Will it take a lot of resources? I am running my thing on Heartbeat.

#9

I’ve recently made something like this. All it does is raycast in the lookvector of the HumanoidRootPart.

As long as nothing is there I generally don’t do anything. But if there is something blocking then I do a generic for loop in increments of a specific angle. For instance

for i=-45, 45, 15 do
 -- loop between -45 degrees and 45 degrees by 15 degree increments.
end

I then check to see if there’s a free angle. If so then I make them walk in that direction for x amount of seconds. Then they go back to walking forward.

https://i.gyazo.com/61c27b32fe7d45a08f51e749162a24c7.gif

It’s not perfect. But it does work. This is an earlier version. It’s definitely resource-hungry but as you can see it works kind of okay with a large number. In my experience, the delays for walking back in a straight line gets longer and longer. I’ve tried using parallel Lua but unfortunately, it caused crashes frequently.

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#10

Thanks for your reply.

Because others’ solutions haven’t worked the way I hoped, I will try your solution because it seems the simplest out of them all.

EDIT: I also have a question. How do you fire rays at a certain angle? (sorry i’m still in algebra 2)

#11

I simply grab the CFrame from the HumanoidRootPart and then multiply it by the angle.

HumanoidRootPart.CFrame * CFrame.Angles(0, math.rad(i), 0)
#12

Wow, why didn’t I think of that? Anyways, thanks for the solution.

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#13

Hi everyone. I am here to present an update. Here’s a video of what happened thanks to this topic.

As you can see, it works! A big part of this success came from @T0ny, who helped me with the process for it.

reply for solution

Thank you everyone for replying and trying to help me out!

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