判断坐标点附近是否有车辆

function EnumerateEntitiesWithinDistance(entities, isPlayerEntities, coords, maxDistance)
    local nearbyEntities = {}
    if coords then
        coords = vector3(coords.x, coords.y, coords.z)
    else
        local playerPed = PlayerPedId()
        coords = GetEntityCoords(playerPed)
    end
    for k, entity in pairs(entities) do
        local distance = #(coords - GetEntityCoords(entity))
        if distance <= maxDistance then
            nearbyEntities[#nearbyEntities + 1] = isPlayerEntities and k or entity
        end
    end
    return nearbyEntities
end

function GetVehiclesInArea(coords, maxDistance) -- Vehicle inspection in designated area
    return EnumerateEntitiesWithinDistance(GetGamePool('CVehicle'), false, coords, maxDistance)
end

function IsSpawnPointClear(coords, maxDistance) -- Check the spawn point to see if it's empty or not:
    return #GetVehiclesInArea(coords, maxDistance) == 0
end