AI stop detecting player when they're standing still

[Kriegtical (Spreadsheet56)]

So I’ve scripted an AI that would shoot at players when they’re in range but the raycast sometimes just stop working when they’re standing still

Clip

here’s what I did

local NPC = script.Parent
local ignorelist = {NPC}
local Debris = game:GetService("Debris")
local RS = game:GetService("ReplicatedStorage")
local BulletholesMod = require(RS:WaitForChild("BulletholeTEX"))
local BulletSoundsMod = require(RS:WaitForChild("BulletImpactSounds"))
local FXFolder = RS:WaitForChild("Effects")
local HitFXFolder = FXFolder.HitEffect
local canfire = true
local firing = false
local ignorelist = {NPC}

local statsmod = require(script.Parent.Stats)
local spreadIntensity = statsmod.Spread
local Range = statsmod.Range
local FireRate = statsmod.FireRate
local ROF = 60/FireRate
local origin = NPC.HumanoidRootPart

local params = RaycastParams.new()
params.FilterType = Enum.RaycastFilterType.Blacklist
params.FilterDescendantsInstances = ignorelist

local function Bullethole(hit, position, normal)
	--irrelevant
end

local function fireshots(direction)
	--irrelevant
end

local function ShootPlayer(player)
	local playerCharacter = player.Character
	if not playerCharacter then
		return
	end

	local playerPart = playerCharacter:FindFirstChild("HumanoidRootPart")
	if not playerPart then
		return
	end

	local npcPart = NPC:FindFirstChild("Head")
	if not npcPart then
		return
	end

	local direction = (playerPart.Position - npcPart.Position).Unit
	local raycastResult = workspace:Raycast(npcPart.Position, direction * Range, params)

	if raycastResult and raycastResult.Instance == playerPart then
		print("NPC shot player", player.Name)
		firing = true
		fireshots(direction)
	else
		firing = false
		print("lost target")
	end
end

local function DetectPlayers()
	while true do
		for _, player in ipairs(game.Players:GetPlayers()) do
			if player.Character then
				local npcPart = NPC:FindFirstChild("HumanoidRootPart")
				if npcPart and (player.Character.HumanoidRootPart.Position - npcPart.Position).Magnitude <= Range then
					ShootPlayer(player)
				end
			end
		end
		wait()
	end
end

DetectPlayers()

Any help is appreciated!

[dthecoolest]

@Kriegtical

and raycastResult.Instance == playerPart

Your raycast only detects the humanoid root part and not the arms, legs, and accessories.

You should try replacing it with another method such as :GetPlayerFromCharacters if you want the raycast to hit players only.

[Kriegtical (Spreadsheet56)]

Well I also want to NOT detect stuff like limbs because if my player’s arms went through wall the “AI” will shoot it

[dthecoolest]

Then you can probably just add another check just for this specific scenario.

If it hits an arm or leg do a reverse raycast or the newer shape cast from the players humanoid root part towards the npc to see if the player is behind a wall.

[Kriegtical (Spreadsheet56)]

That would be very tiresome and hard for me since I’m pretty inexperienced (imo) and I don’t think I can do the double check raycast you suggested

[Kriegtical (Spreadsheet56)]

Nevermind, I got desperate and asked ChudGPT and it tells me that I’m stupid and just have to replace some “or” with “and”

from

if descendant.Name ~= “Head” or descendant.Name ~= “Torso” or descendant.Name ~= “Humanoid” then

to

if descendant.Name ~= “Head” and descendant.Name ~= “Torso” and descendant.Name ~= “Humanoid” then