esx_core/client/main.lua

local Keys = {
	["ESC"] = 322, ["F1"] = 288, ["F2"] = 289, ["F3"] = 170, ["F5"] = 166, ["F6"] = 167, ["F7"] = 168, ["F8"] = 169, ["F9"] = 56, ["F10"] = 57,
	["~"] = 243, ["1"] = 157, ["2"] = 158, ["3"] = 160, ["4"] = 164, ["5"] = 165, ["6"] = 159, ["7"] = 161, ["8"] = 162, ["9"] = 163, ["-"] = 84, ["="] = 83, ["BACKSPACE"] = 177,
	["TAB"] = 37, ["Q"] = 44, ["W"] = 32, ["E"] = 38, ["R"] = 45, ["T"] = 245, ["Y"] = 246, ["U"] = 303, ["P"] = 199, ["["] = 39, ["]"] = 40, ["ENTER"] = 18,
	["CAPS"] = 137, ["A"] = 34, ["S"] = 8, ["D"] = 9, ["F"] = 23, ["G"] = 47, ["H"] = 74, ["K"] = 311, ["L"] = 182,
	["LEFTSHIFT"] = 21, ["Z"] = 20, ["X"] = 73, ["C"] = 26, ["V"] = 0, ["B"] = 29, ["N"] = 249, ["M"] = 244, [","] = 82, ["."] = 81,
	["LEFTCTRL"] = 36, ["LEFTALT"] = 19, ["SPACE"] = 22, ["RIGHTCTRL"] = 70,
	["HOME"] = 213, ["PAGEUP"] = 10, ["PAGEDOWN"] = 11, ["DELETE"] = 178,
	["LEFT"] = 174, ["RIGHT"] = 175, ["TOP"] = 27, ["DOWN"] = 173,
	["NENTER"] = 201, ["N4"] = 108, ["N5"] = 60, ["N6"] = 107, ["N+"] = 96, ["N-"] = 97, ["N7"] = 117, ["N8"] = 61, ["N9"] = 118
}

ESX                           = nil
local HasAlreadyEnteredMarker = false
local LastZone                = nil
local CurrentAction           = nil
local CurrentActionMsg        = ''
local CurrentActionData       = {}

Citizen.CreateThread(function()
	while ESX == nil do
		TriggerEvent('esx:getSharedObject', function(obj) ESX = obj end)
		Citizen.Wait(0)
	end

	ESX.TriggerServerCallback('esx_weaponshop:getShop', function(shopItems)
		for k,v in pairs(shopItems) do
			Config.Zones[k].Items = v
		end
	end)
end)

RegisterNetEvent('esx_weaponshop:sendShop')
AddEventHandler('esx_weaponshop:sendShop', function(shopItems)
	for k,v in pairs(shopItems) do
		Config.Zones[k].Items = v
	end
end)

function OpenBuyLicenseMenu(zone)
	ESX.UI.Menu.CloseAll()

	ESX.UI.Menu.Open('default', GetCurrentResourceName(), 'shop_license', {
		title = _U('buy_license'),
		align = 'top-left',
		elements = {
			{ label = _U('no'), value = 'no' },
			{ label = _U('yes', ('<span style="color: green;">%s</span>'):format((_U('shop_menu_item', ESX.Math.GroupDigits(Config.LicensePrice))))), value = 'yes' },
		}
	}, function(data, menu)
		if data.current.value == 'yes' then
			ESX.TriggerServerCallback('esx_weaponshop:buyLicense', function(bought)
				if bought then
					menu.close()
					OpenShopMenu(zone)
				end
			end)
		end
	end, function(data, menu)
		menu.close()
	end)
end

function OpenShopMenu(zone)
	local elements = {}

	for i=1, #Config.Zones[zone].Items, 1 do
		local item = Config.Zones[zone].Items[i]

		table.insert(elements, {
			label      = ('%s - <span style="color: green;">%s</span>'):format(item.label, _U('shop_menu_item', ESX.Math.GroupDigits(item.price))),
			weaponName = item.item
		})
	end

	ESX.UI.Menu.CloseAll()

	ESX.UI.Menu.Open('default', GetCurrentResourceName(), 'shop', {
		title = _U('shop'),
		align = 'top-left',
		elements = elements
	}, function(data, menu)
		TriggerServerEvent('esx_weaponshop:buyItem', data.current.weaponName, zone)
	end, function(data, menu)
		menu.close()

		CurrentAction     = 'shop_menu'
		CurrentActionMsg  = _U('shop_menu')
		CurrentActionData = { zone = zone }
	end)
end

AddEventHandler('esx_weaponshop:hasEnteredMarker', function(zone)
	CurrentAction     = 'shop_menu'
	CurrentActionMsg  = _U('shop_menu')
	CurrentActionData = { zone = zone }
end)

AddEventHandler('esx_weaponshop:hasExitedMarker', function(zone)
	CurrentAction = nil
	ESX.UI.Menu.CloseAll()
end)

-- Create Blips
Citizen.CreateThread(function()
	for k,v in pairs(Config.Zones) do
		if v.legal then
			for i = 1, #v.Pos, 1 do
				local blip = AddBlipForCoord(v.Pos[i].x, v.Pos[i].y, v.Pos[i].z)

				SetBlipSprite (blip, 110)
				SetBlipDisplay(blip, 4)
				SetBlipScale  (blip, 1.0)
				SetBlipColour (blip, 81)
				SetBlipAsShortRange(blip, true)

				BeginTextCommandSetBlipName("STRING")
				AddTextComponentString(_U('map_blip'))
				EndTextCommandSetBlipName(blip)
			end
		end
	end
end)

-- Display markers
Citizen.CreateThread(function()
	while true do
		Citizen.Wait(0)

		local coords = GetEntityCoords(PlayerPedId())

		for k,v in pairs(Config.Zones) do
			for i = 1, #v.Pos, 1 do
				if(Config.Type ~= -1 and GetDistanceBetweenCoords(coords, v.Pos[i].x, v.Pos[i].y, v.Pos[i].z, true) < Config.DrawDistance) then
					DrawMarker(Config.Type, v.Pos[i].x, v.Pos[i].y, v.Pos[i].z, 0.0, 0.0, 0.0, 0, 0.0, 0.0, Config.Size.x, Config.Size.y, Config.Size.z, Config.Color.r, Config.Color.g, Config.Color.b, 100, false, true, 2, false, false, false, false)
				end
			end
		end
	end
end)

-- Enter / Exit marker events
Citizen.CreateThread(function()
	while true do
		Citizen.Wait(0)

		local coords      = GetEntityCoords(PlayerPedId())
		local isInMarker  = false
		local currentZone = nil

		for k,v in pairs(Config.Zones) do
			for i=1, #v.Pos, 1 do
				if(GetDistanceBetweenCoords(coords, v.Pos[i].x, v.Pos[i].y, v.Pos[i].z, true) < Config.Size.x) then
					isInMarker  = true
					ShopItems   = v.Items
					currentZone = k
					LastZone    = k
				end
			end
		end
		if isInMarker and not HasAlreadyEnteredMarker then
			HasAlreadyEnteredMarker = true
			TriggerEvent('esx_weaponshop:hasEnteredMarker', currentZone)
		end
		
		if not isInMarker and HasAlreadyEnteredMarker then
			HasAlreadyEnteredMarker = false
			TriggerEvent('esx_weaponshop:hasExitedMarker', LastZone)
		end
	end
end)

-- Key Controls
Citizen.CreateThread(function()
	while true do
		Citizen.Wait(0)

		if CurrentAction ~= nil then
			ESX.ShowHelpNotification(CurrentActionMsg)

			if IsControlJustReleased(0, Keys['E']) then
				if CurrentAction == 'shop_menu' then
					if Config.LicenseEnable and Config.Zones[CurrentActionData.zone].legal then
						ESX.TriggerServerCallback('esx_license:checkLicense', function(hasWeaponLicense)
							if hasWeaponLicense then
								OpenShopMenu(CurrentActionData.zone)
							else
								OpenBuyLicenseMenu(CurrentActionData.zone)
							end
						end, GetPlayerServerId(PlayerId()), 'weapon')
					else
						OpenShopMenu(CurrentActionData.zone)
					end
				end
				CurrentAction = nil
			end
		end
	end
end)