NPC Dialogue System

[ar3lle (arelle)]

Hello everyone.

I’m trying to create a system where an NPC greets a player (using a normal speech bubble) when they’re within a certain distance of the NPC.

I would like the greeting to be in a standard text bubble but I am having trouble finding a tutorial that automatically greets players within a certain distance, without them having to use a ProximityPrompt first for the text to appear or the Dialogue system on Roblox Studio which requires you to press the speech bubble before the text appears.

Is there a way to do this, and if so, is there anyone who has a link to a tutorial or a model which does this? I have been unable to find either.

Thanks in advance.

[Local_LettuceGiver (Lettuce)]

Heres my approach. First, make a part inside the NPC called ‘Range’, it should be invisible and have can collide set to false, and it should also be welded to the humanoidrootpart. Next, put this script somewhere into the NPC

local Rig = script.Parent
local Range = Rig:WaitForChild("Range")
local Chat = game:GetService("Chat")
local Inside = {}

while task.wait() do
	local Inside_Local = {}
	local op = OverlapParams.new()
	op.FilterType = Enum.RaycastFilterType.Exclude
	op.FilterDescendantsInstances = {Rig}
	for _,v in pairs(workspace:GetPartBoundsInBox(Range.CFrame,Range.Size,op)) do
		
		if v.Parent:IsA("Model") and v.Parent:FindFirstChild("Humanoid") then
			
			table.insert(Inside_Local,v.Parent)
			
			if not table.find(Inside,v.Parent) then
				table.insert(Inside,v.Parent)
				Chat:Chat(Rig.Head,"Hi!")  -- if you want this to be local only, instead of porting the code to the client you could just fire a remote event instead
			end
			
		end
		
	end
	
	for k,v in pairs(Inside) do -- this loop removes players that are already inside
		if not table.find(Inside_Local,v) then
			table.remove(Inside,k)
		end
	end
end

This approach isnt perfect and actually it sucks but I hope its at least a good starting point. Also note that this only works on the server but if you want to make it local only, you can change Chat:Chat() to fire a remote event which will trigger a chat bubble to be made on the client.