Making a notification appear close to coordinates

FiveM Resource Development & Modding Discussion
1

Hey everyone, i’m trying to make it so when a player is in usable range of a bank, they will receive a notification. What would be the proper way to do this (without running a loop that constantly checks the player location and compares it to the location of a specified coordinate)? Is there a way that I can call a function if a player walks within range of said coordinate? Thanks for any help.

2 
Config.Zones = {

  zone1 = { 
    Pos  = { x = 123.456, y = -123.456, z = 12.3 },
    Size = { x = 1.5, y = 1.5, z = 0.4 },
    Type = 1
  },

  zone2 = { 
    Pos  = { x = -123.456, y = 123.456, z = 12.3 },
    Size = { x = 1.5, y = 1.5, z = 0.4 },
    Type = 1
  },

Citizen.CreateThread(function()
	while true do

		Wait(0)

		local coords = GetEntityCoords(GetPlayerPed(-1))

		for k,v in pairs(Config.Zones) do

			if(v.Type ~= -1 and GetDistanceBetweenCoords(coords, v.Pos.x, v.Pos.y, v.Pos.z, true) < Config.DrawDistance) then
				DrawMarker(v.Type, v.Pos.x, v.Pos.y, v.Pos.z, 0.0, 0.0, 0.0, 0, 0.0, 0.0, v.Size.x, v.Size.y, v.Size.z, Config.MarkerColor.r, Config.MarkerColor.g, Config.MarkerColor.b, 100, false, true, 2, false, false, false, false)
			end
		end

	end
end)

Citizen.CreateThread(function()
	while true do

		Wait(0)

		local coords      = GetEntityCoords(GetPlayerPed(-1))
		local isInMarker  = false
		local currentZone = nil

		for k,v in pairs(Config.Zones) do
			if(GetDistanceBetweenCoords(coords, v.Pos.x, v.Pos.y, v.Pos.z, true) < v.Size.x) then
				isInMarker  = true
				currentZone = k
			end
		end

		if isInMarker and not hasAlreadyEnteredMarker then
			hasAlreadyEnteredMarker = true
			lastZone                = currentZone
			TriggerEvent('notificationevent', currentZone)
		end

		if not isInMarker and hasAlreadyEnteredMarker then
			hasAlreadyEnteredMarker = false
			TriggerEvent('notificationevent', lastZone)
		end

	end
end)
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