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✓ ANSWER ACCEPTED

Physics service collisions not working?

Asked 1,239 views1 answers

Hi, I think I'm doing something wrong here. But heres a short explanation on what I intended this to do, as a player you can spawn in as a ghost (thats unneeded) but then make it so that you as a player are able to go through the ghost and the ghost can go through you, here is what I've made so far and It's not working;

Inside a module script;

local ps = game:GetService("PhysicsService")
ps:CreateCollisionGroup("player")
ps:CreateCollisionGroup("ghost")
ps:CollisionGroupSetCollidable("ghost", "player", false)
ps:CollisionGroupSetCollidable("ghost", "ghost", false)

function module:RemoveCollisions(model)
	for a,b in pairs(model:GetChildren()) do
		if b:IsA("BasePart") then
			ps:SetPartCollisionGroup(b, "ghost")
		end
	end
end

function module:Ghosting(char)
	char:WaitForChild("HumanoidRootPart")
	char:WaitForChild("Head")
	char:WaitForChild("Humanoid")
	wait(0.1)
	module:RemoveCollisions(char)
end

Inside a server script in ServerScriptService

remotes.ChangeRole.OnServerEvent:Connect(function(plr, char, changerole)
	if changerole == "Ghost" then
		local role = require(game.ReplicatedStorage.Roles.Ghost)
		role:Ghosting(char) -- this fires the Ghosting function in the module script
	end
end)

Any help would be greatly appreciated, thank you so much for your time on reading my concerns.

AnonymousEdited

1 answer

✓ Accepted answer

You haven't set CollisionGroupSetCollidable which determines the collidable status between two groups.

I am guessing that you made a typo in your explanation, because usually ghosts do not collide with normal players.

In order to accomplish ghosts being able to pass through players, you would need to make a collision group for normal players, as well as one for ghosts, and do something to the effect of:

ps:CollisionGroupSetCollidable("ghost", "player", false)

Make sure you add all players to the "player" group, and those who become ghosts you can set them to the "ghost" group.

Please let me know if you are already doing this, and I will edit my answer. I am working off the information you provide.

EDIT: Also, if you want ghosts to be able to go through other ghosts, make sure you set collisions between that group to be false with itself:

ps:CollisionGroupSetCollidable("ghost", "ghost", false)

EDIT 2:

local players = game:GetService("Players")
local ps = game:GetService("PhysicsService")

ps:CreateCollisionGroup("players")
ps:CreateCollisionGroup("ghost")
--create collision groups

ps:CollisionGroupSetCollidable("ghost", "player", false)
ps:CollisionGroupSetCollidable("ghost", "ghost", false)
--set collisions between ghosts and players, ghosts and ghosts

function setCharGroup(char, group)
	for _, child in pairs(char:GetChildren()) do
		if child:IsA("BasePart") then
			ps:SetPartCollisionGroup(child, group)
		end
	end
end --utility function to set the collision group for all baseparts in the character

players.PlayerAdded:Connect(function(player)
	player.CharacterAdded:Connect(function(character)
		setCharGroup(character, "player")
	end)
end) --add all players to "player" collision group

function ghost(char)
	setCharGroup(char, "ghost")
end --ghosting function (example)
AnonymousEdited Permalink

3 comments

0

I don't quite understand what you mean by 'Make sure you add all players to the "player" group, and those who become ghosts you can set them to the "ghost" group.' are you able to elaborate and give a answer in lua? Edited my question to show what I've done so far

Anonymous#
0

Thanks very much, will try out the code soon. Just going out now.

Anonymous#
0

Note my second edit was written from scratch and is not a solid replacement for yours. It is simply showing my explanation of adding all the players who spawn to one collision group, and to ghost them you add them to another

Anonymous#

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