Make player's character not collide with set objects

Help and Feedback Scripting Support
#1

Hi
I am trying to make it so that the player won’t collide with selected objects. It doesn’t have to be at run time in fact it would be easier if it wasn’t. I tried using CollisionGroupId property and set it to 4 but it doesn’t change anything.

#2

Use physics service
https://developer.roblox.com/en-us/api-reference/class/PhysicsService

1 Like
#3

Use collision grop menu in model tab to add a collision group and follow instructions above

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#4

Quick code example here. Given two groups, here’s what you could do.

local ps = game:GetService("PhysicsService")

ps:CreateCollisionGroup("PlayersGroup")
ps:CreateCollisionGroup("NpcsGroup")

ps:CollisionGroupSetCollidable("PlayersGroup", "NpcsGroup", false)


for _, npc in pairs(npcs:GetChildren()) do
     for _, v in pairs(npc:GetDescendants()) do
          if v:IsA("BasePart") then
               ps:SetPartCollisionGroup(v,"NpcsGroup")
          end
     end
end

game.Players.PlayerAdded:Connect(function(plr)
     plr.CharacterAdded:Connect(function(char)
          task.wait()
          for _, v in pairs(char:GetChildren()) do
               if v:IsA("BasePart") then
                    ps:SetPartCollisionGroup(v,"PlayersGroup")
               end
          end
     end)
end)

More efficent ways to do that but the main purpose of that code is to just showcase what a collision group is and how you set them and create them.

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#5

Thanks for replying, I am using this service but the problem is I don’t know how to do it properly. So I made a collision group called “Grabbable” and made it so that players can’t collide with it but how would I assign an object to that group without using scripts because that would’ve been messy.

#6

Its not that messy

local ps = game:GetService("PhysicsService")
local cannotCollideStuff = pathtostuff
ps:CreateCollisionGroup("PlayersGroup")
ps:CreateCollisionGroup("NpcsGroup")

ps:CollisionGroupSetCollidable("PlayersGroup", "NpcsGroup", false)


for _, npc in pairs(cannotCollideStuff:GetChildren()) do
     for _, v in pairs(npc:GetDescendants()) do
          if v:IsA("BasePart") then
               ps:SetPartCollisionGroup(v,"NpcsGroup")
          end
     end
end

Parts of code
Ps if it broke its prob a typo

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#7

Thanks for replying, the thing is those parts would be in different folders so I would have to lop through literally every objects in the game or put a script in every one of those objects to set that for me. Either way I scrapped the idea, but thanks for helping.

#8 
local ps = game:GetService("PhysicsService")
local cannotCollideStuff = {path to folders1,path to folders2}
ps:CreateCollisionGroup("PlayersGroup")
ps:CreateCollisionGroup("NpcsGroup")

ps:CollisionGroupSetCollidable("PlayersGroup", "NpcsGroup", false)


for _, npc in pairs(cannotCollideStuff) do
     for _, v in pairs(npc:GetDescendants()) do
          if v:IsA("BasePart") then
               ps:SetPartCollisionGroup(v,"NpcsGroup")
          end
     end
end

Part of this is psudo code but you should understand the concept of tables