[Solved]Make a NPC face a player

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2

You can use CFrame.lookAt(at, lookAt) to get an NPC to look at a point.

-- in a loop,
NPC:SetPrimaryPartCFrame(CFrame.lookAt(
    -- start at the NPC's position
    NPC.HumanoidRootPart.Position,
    -- makes the NPC look at the player, but not move up and down
    Character.HumanoidRootPart.Position * Vector3.new(1,0,1)
        + NPC.HumanoidRootPart.Position * Vector3.new(0,1,0)
))

I hope that’s enough info.

Edit: this one is better cleaned up.

local NPCroot = NPC.HumanoidRootPart
local CharRoot = Character.HumanoidRootPart

NPC:SetPrimaryPartCFrame(CFrame.lookAt(
    NPCroot.Position,
    CharRoot.Position * Vector3.new(1, 0, 1)
        + NPCroot.Position * Vector3.new(0, 1, 0)
))
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