How do I check if a player is in width of range?

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#1

So I made this function that loops with dot checking if the player is facing the other player before damaging for my breath particle script. I also used magnitude to check the range between the two. My problem is that the breath particle is quite slim, and the magnitude is too big of range.

If the players facing the other player that’s good, but if theyre not inside of the particle but more of next to it they still get damaged. Matter of fact they can be pretty far away from next to it and as long as i’m facing their direction it just damages.

How can I make this work so that it perfectly checks distance for z and x?

Here’s the function I created:

function icebreath()
	
	breath1.Enabled = true
	breath2.Enabled = true
	breath3.Enabled = true

	while iceybreath do
		wait(.25)
		local playersInHitbox = {};
		for i,oPlr in pairs(game.Players:GetPlayers()) do -- oPlr = 'other player'
			if oPlr ~= plr and oPlr.Character and oPlr.Character:FindFirstChild("HumanoidRootPart") and root then
				local oRoot = oPlr.Character:FindFirstChild('HumanoidRootPart');
				local v = oRoot.Position - root.Position;
				if v.magnitude < 15 and v:Dot(root.CFrame.lookVector) > 0 then
					playersInHitbox[#playersInHitbox + 1] = oPlr;
				end
			end
		end
		for _,cPlr in pairs(playersInHitbox) do
			cPlr.Character.Humanoid:TakeDamage(5)
		end
	end
	
	breath1.Enabled = false
	breath2.Enabled = false
	breath3.Enabled = false
	
end
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#2

Here’s an example of my problem;
https://gyazo.com/11e850a02d77539eae42386ebe459095

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