ROBLOX工作室：如何让这个NPC跟随最近的玩家，而不会有时撞墙？

ROBLOX工作室：如何让这个NPC跟随最近的玩家，而不会有时撞墙？看起来你的帖子大多是代码，麻烦添加更多细节。

 local larm = script.Parent:FindFirstChild("HumanoidRootPart")
 local rarm = script.Parent:FindFirstChild("HumanoidRootPart")

 function findNearestTorso(pos)
     local list = game.Workspace:children()
     local torso = nil
     local dist = math.huge
     local temp = nil
     local human = nil
     local temp2 = nil
     for x = 1, #list do
         temp2 = list[x]
         if (temp2.className == "Model") and (temp2 ~= script.Parent) then
             temp = temp2:findFirstChild("HumanoidRootPart")
             human = temp2:findFirstChild("Humanoid")
             if (temp ~= nil) and (human ~= nil) and (human.Health > 0) then
                 if (temp.Position - pos).magnitude < dist then
                     torso = temp
                     dist = (temp.Position - pos).magnitude
                 end
             end
         end
     end
     return torso
 end

 while true do
     wait(math.random(1,5))
     local target = findNearestTorso(script.Parent.HumanoidRootPart.Position)
     if target ~= nil then
         script.Parent.Humanoid:MoveTo(target.Position, target)
     end

 end