How do I accomplish an NPC that chases every player?

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#1
  1. What do I want to achieve?

It’s easiest for me to give an example: On Player1’s screen, the enemy is chasing him, and on Player2’s screen it shows that the enemy is chasing him instead of Player1.

  1. What is the issue?

I’m having trouble understanding how I can achieve my goal.

  1. What solutions have you tried so far?

I’ve tried typing it just like a normal AI script but it was a local script, obviously, that didn’t work.

local aiModel = script.Parent
local Humanoid = aiModel:FindFirstChild("Humanoid")

local sightRange = 50
local killDistance = 3

local function findPlayer()
	
	local Players = game.Players:GetPlayers()
	
	for i, Player in pairs(Players) do
		if Player.Character then
			if Player.Character:FindFirstChild("Humanoid").Health > 0 then
				local Target = Player.Character
				local Distance = (aiModel.RootPart.Position - Target.HumanoidRootPart.Position.Magnitude)
				
				if Distance < sightRange then
					Humanoid:MoveTo(Target.HumanoidRootPart.Position)
				end
				
				if Distance < killDistance then
					if Target.Humanoid then
						Target.Humanoid:TakeDamage(100)
					end
				end
			end
		end
	end
end

while wait() do
	findPlayer()
end
1 Like
#2

For each client have the server spawn a NPC, handle SFX/VFX on client side and make all baseparts/meshparts of npc Transparency 0 on Client, Otherwise on server It’s Transparency 1. Then have an object value/or table which specifies a link of which npc is set to which player, now you have 1:1 looking npcs chasing each player and to each player visually it looks like the npc is only chasing them and they wouldn’t know that theirs actually multiple.

#3

Could you help me script that? Not a full script, just a basic example script that I could work off.

#4

@Aishetoru has a good concept. However, have you considered how to resolve issues of obstacle avoidance? Have you looked into the pathfinding service? If each NPC is going to follow a player 1:1 then you need a pathing system so the NPC can get to the player.

To all parts of an NPC to transparent or opaque, you would do this:

local model = script.Parent
for _, part in pairs(model:GetChildren()) do
	if part:IsA("BasePart") or part:IsA("MeshPart") then
		part.Transparency = 1 -- To make transparent.
	end
end

Put that in a server script inside the NPC’s model at the same location where Humanoid, Head, HumanoidRootPart, etc… are located.

On the client, you would have to use a remote event when the NPC spawns. In the event, the client will have to know which NPC to set the transparency to 0 on. You can send the model to the client.

local replicatedStorage = game:GetService("ReplicatedStorage")

replicatedStorage.makeVisible.OnClientEvent:Connect(function(model)
	for _, part in pairs(model:GetChildren()) do
		if part:IsA("BasePart") or part:IsA("MeshPart") then
			part.Transparency = 0 -- To make opaque
		end
	end
end

Make sure you create the event and place it in replicated storage.

#6

Thank you for your comment, but it has been deemed too laggy for some devices, and I’ve found a way to do it.

I made a LocalScript in StarterPlayer >> StarterPlayerScripts:

local Clone = NPC:clone()

Clone.Parent = game.Workspace.NPC

And then I made another one for the AI:

local hrpOfNPC = npc:WaitForChild("HumanoidRootPart")

local plrsHit = {}

local maxDistance = math.huge


npc.Humanoid.Touched:Connect(function(touch)

	if game.Players:GetPlayerFromCharacter(touch.Parent) and not plrsHit[game.Players:GetPlayerFromCharacter(touch.Parent)] then

		plrsHit[game.Players:GetPlayerFromCharacter(touch.Parent)] = true
		
		touch.Parent.Humanoid.Health = 0
		
		wait(1)

		plrsHit[game.Players:GetPlayerFromCharacter(touch.Parent)] = false	
	end
end)


while wait() do
	
	local plrs = game.Players:GetPlayers()
	
	local closestHRP
	
	for i, plr in pairs(plrs) do
		
		if plr.Character and plr.Character:FindFirstChild("HumanoidRootPart") and plr.Character.Humanoid.Health > 0 then
			
			local hrp = plr.Character.HumanoidRootPart
			
			local distanceBetween = (hrpOfNPC.Position - hrp.Position).Magnitude
			
			
			if not closestHRP then closestHRP = hrp end
			
			if (hrpOfNPC.Position - closestHRP.Position).Magnitude > distanceBetween then
				
				closestHRP = hrp
				
			end
		end
	end
	
	if closestHRP and (hrpOfNPC.Position - closestHRP.Position).Magnitude <= maxDistance then npc.Humanoid:MoveTo(closestHRP.Position) end
end

Later, I’m going to rescript the AI for it to work with PathfindingService