Raycast being weird

[JeffDaAwesomeDu (rehkloo6)]

You can write your topic however you want, but you need to answer these questions:

1. What do you want to achieve? Keep it simple and clear!
   Im making a flying script for an enemy in my 2D game. Im using a raycast to stop it flying into walls and destroying itself (because it does that.)
2. What is the issue? Include screenshots / videos if possible!
   The raycast in this script is only returning a mesh that is inside the enemy model, even when i set its direction to 900.
3. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
   Ive tried setting the raycast to absurd numbers to see what the issue is, its very confusing to me as i dont know much about raycasts.

Heres my script:

local hrpOfNPC = npc:WaitForChild("HumanoidRootPart")
local humanoid = npc:WaitForChild("Humanoid")
local plrsHit = {}
local maxDistance = math.huge
local pursuitCooldown = 0

npc.Humanoid.Touched:Connect(function(touch)
	if humanoid.Health >= 1 then
		local player = game.Players:GetPlayerFromCharacter(touch.Parent)
		if player and not plrsHit[player] then
			plrsHit[player] = true
			touch.Parent.Humanoid:TakeDamage(10)
			wait(1)
			plrsHit[player] = false  
		end
	end
end)

local function getClosestPlayer()
	local plrs = game.Players:GetPlayers()
	local closestHRP
	local closestDistance = math.huge

	for _, plr in pairs(plrs) do
		if plr.Character and plr.Character:FindFirstChild("HumanoidRootPart") and plr.Character:FindFirstChild("Humanoid").Health > 0 then
			local hrp = plr.Character.HumanoidRootPart
			local distanceBetween = (hrpOfNPC.Position - hrp.Position).Magnitude

			if distanceBetween < closestDistance then
				closestHRP = hrp
				closestDistance = distanceBetween
			end
		end
	end
	return closestHRP
end
local moveamount = 0.6
while wait(pursuitCooldown) do
	local targetHRP = getClosestPlayer()
	if targetHRP and (hrpOfNPC.Position - targetHRP.Position).Magnitude <= maxDistance then
		local head = npc.HeadConePart.MeshPart
		if not (humanoid.Health == 0) then
			if targetHRP.Position.Y > hrpOfNPC.Position.Y then
				-- sry im spamming it theres nothing i can do i think
				local ray = workspace:Raycast(Vector3.new(head.Position.X, head.Position.Y, head.Position.Z), Vector3.new(head.Position.X, head.Position.Y + (moveamount + 2), head.Position.Z))
				print(ray.Instance) 
				if not ray.Instance then
					
					npc:MoveTo(Vector3.new(head.Position.X, head.Position.Y + moveamount, head.Position.Z ))
				end
			elseif targetHRP.Position.Y < hrpOfNPC.Position.Y then
				local ray = workspace:Raycast(Vector3.new(head.Position.X, head.Position.Y, head.Position.Z), Vector3.new(head.Position.X, head.Position.Y + -(moveamount + 2), head.Position.Z))
				print(ray.Instance)
				if not ray.Instance then
					
					npc:MoveTo(Vector3.new(head.Position.X, head.Position.Y - moveamount, head.Position.Z ))
				end
			end
			if targetHRP.Position.Z > hrpOfNPC.Position.Z then
				local ray = workspace:Raycast(Vector3.new(head.Position.X, head.Position.Y, head.Position.Z), Vector3.new(head.Position.X, head.Position.Y, head.Position.Z + (moveamount + 2)))
				print(ray.Instance)
				if not ray.Instance then
					
					npc:MoveTo(Vector3.new(head.Position.X, head.Position.Y, head.Position.Z + moveamount ))
				end
			elseif targetHRP.Position.Z < hrpOfNPC.Position.Z then
				local ray = workspace:Raycast(Vector3.new(head.Position.X, head.Position.Y, head.Position.Z), Vector3.new(head.Position.X, head.Position.Y, head.Position.Z + -(moveamount + 2)))
				print(ray.Instance)
				if not ray.Instance then 
					
					npc:MoveTo(Vector3.new(head.Position.X, head.Position.Y, head.Position.Z - moveamount ))
				end
			end
		else
			npc.HeadConePart.MeshPart.Anchored = false
		end
	end
end

humanoid.HealthChanged:Connect(function()
	if humanoid.Health <= 0 then
		wait(3)
		npc:Destroy()
	end
end)

[happya_x (Happya)]

i think making the magnitude of the direction controls how far it goes before it stops

if you want it to not hit the enemy mesh then you need to make a raycastParams, then add all the characters and other stuff you dont want to hit (only the top level instances because everything inside them also gets filtered) to the FilterDescendantsInstances and then set the filterType to Enum.FIlterType.Exclude

you could also set it to Enum.FilterType.Include and then only put what you want to hit in the FilterDescendantsInstances

edit: pass in the raycastparams as the third argument to workspace:Raycast in order to use it