Chasing npc acting weird

Help and Feedback Scripting Support
1

Im making an npc that wanders around until a player comes nearby, and will then chase the player but it this is what happens when it tries to chase a player

local monster = script.Parent
local humanoid = monster.Humanoid
local hrp = monster.HumanoidRootPart
local nodes = monster.Parent.MovementNodes:GetChildren()
local pathfinding = game:GetService(“PathfindingService”)
local chasing = false
local sight = 50

game:GetService(“RunService”).Heartbeat:Connect(function()
local players = game.Players:GetChildren()
for i = 1, players do
local character = players[i].Character or players[i].CharacterAdded:Wait()
local plrhrp = character:FindFirstChild(“HumanoidRootPart”)
local dis = (hrp.Position - plrhrp.Position).Magnitude
if dis <= sight then
humanoid.WalkSpeed = 20
chasing = true
local path = pathfinding:CreatePath()
path:ComputeAsync(hrp.Position,plrhrp.Position)
local waypoints = path:GetWaypoints()
for i, waypoint in pairs(waypoints) do
if chasing == true then
if waypoint.Action == Enum.PathWaypointAction.Jump then
humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
end
humanoid:MoveTo(waypoint.Position)
print(“Chasing”)
humanoid.MoveToFinished:Wait()
end
end
else
humanoid.WalkSpeed = 14
chasing = false
end
end
end)

local function Wander()
humanoid.WalkSpeed = 14
local target = nodes[math.random(1,#nodes)]
local path = pathfinding:CreatePath()
path:ComputeAsync(hrp.Position,target.Position)
local waypoints = path:GetWaypoints()

for i, waypoint in pairs(waypoints) do
	if chasing == false then
	if waypoint.Action == Enum.PathWaypointAction.Jump then
		humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
	end
	humanoid:MoveTo(waypoint.Position)
	print("Wandering")
		humanoid.MoveToFinished:Wait()
	else
		break
	end
end
if chasing == false then
task.wait(1)
	Wander()
end

end
Wander()

2

the thing that lets me put scripts on the devforum was removed so sorry the script looks like that

3 
local monster = script.Parent
local humanoid = monster:WaitForChild("Humanoid")
local hrp = monster:WaitForChild("HumanoidRootPart")
local nodes = monster.Parent.MovementNodes:GetChildren()
local pathfinding = game:GetService("PathfindingService")
local chasing = false
local sight = 50

game:GetService("RunService").Heartbeat:Connect(function()
    local players = game.Players:GetPlayers()
    for i = 1, #players do
        local character = players[i].Character
        if character then
            local plrhrp = character:FindFirstChild("HumanoidRootPart")
            if plrhrp then
                local dis = (hrp.Position - plrhrp.Position).Magnitude
                if dis <= sight then
                    humanoid.WalkSpeed = 20
                    chasing = true

                    
                    local path = pathfinding:CreatePath()
                    path:ComputeAsync(hrp.Position, plrhrp.Position)
                    local waypoints = path:GetWaypoints()

                    for i, waypoint in pairs(waypoints) do
                        if chasing == true then
                            if waypoint.Action == Enum.PathWaypointAction.Jump then
                                humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
                            end
                            humanoid:MoveTo(waypoint.Position)
                            print("Chasing")
                            humanoid.MoveToFinished:Wait()
                        else
                            break
                        end
                    end
                else
                    humanoid.WalkSpeed = 14
                    chasing = false
                end
            end
        end
    end
end)

local function Wander()
    humanoid.WalkSpeed = 14
    local target = nodes[math.random(1,#nodes)]
    local path = pathfinding:CreatePath()
    path:ComputeAsync(hrp.Position,target.Position)
    local waypoints = path:GetWaypoints()

    for i, waypoint in pairs(waypoints) do
        if chasing == false then
            if waypoint.Action == Enum.PathWaypointAction.Jump then
                humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
            end
            humanoid:MoveTo(waypoint.Position)
            print("Wandering")
            humanoid.MoveToFinished:Wait()
        else
            break 
        end
    end

    if chasing == false then
        task.wait(1)
        Wander()
    end
end

task.delay(1, Wander)

Try this?
Youre recalculating the path 60 times per second which well might cause jitters, plus some other stuff.

4

This happens because you are recalculating the path too many times every second, which leads to the Monster NPC constantly only being able to move to the first waypoint that is in the path, and due to server latency delay this first waypoint is often placed behind the character, leading to jitters.
→ Change your code to only recalculate the path every half a second. To compensate the monster should have a higher attack range.
→ Instead of looping through every waypoint in order, I recommend doing this:

for i, waypoint in pairs(waypoints) do
    local waypoint = waypoints[i + 2] or waypoints[#waypoints]
    if chasing == true then
         if waypoint.Action == Enum.PathWaypointAction.Jump then
          humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
       end
       humanoid:MoveTo(waypoint.Position)
       print("Chasing")
        humanoid.MoveToFinished:Wait()
    else
        break
    end
end

Starting with the third waypoint instead of the first should fix the issue where the path starts behind the character, and you can adjust that number as you want.