```lua
local Spawner = {}

local RESOURCE_SETTINGS = require(script:WaitForChild("ResourceSettings"))
local RESOURCE_MODULES = {}
local rng = Random.new()
local RAY_HEIGHT = 100

for index, module in pairs(script.Resources:GetChildren()) do -- Fetches all spawning modules
    if module:IsA("ModuleScript") then
        RESOURCE_MODULES[module.Name] = require(module)
    end
end

local function GET_POSITION(SURFACE_INSTANCE)
    assert(SURFACE_INSTANCE:IsA("BasePart"), "Invalid surface instance.")

    local LEFT_EDGE = SURFACE_INSTANCE.Position.Z - SURFACE_INSTANCE.Size.Z/2
    local RIGHT_EDGE = SURFACE_INSTANCE.Position.Z + SURFACE_INSTANCE.Size.Z/2

    local BOTTOM_EDGE = SURFACE_INSTANCE.Position.X - SURFACE_INSTANCE.Size.X/2
    local TOP_EDGE = SURFACE_INSTANCE.Position.X + SURFACE_INSTANCE.Size.X/2

    local RANDOM_Z = rng:NextInteger(LEFT_EDGE, RIGHT_EDGE)
    local RANDOM_X = rng:NextInteger(BOTTOM_EDGE, TOP_EDGE)

    local RANDOM_VECTOR = Vector3.new(RANDOM_X, 1, RANDOM_Z) -- VERY IMPORTANT: Y Value has to be specified when the vector is used

    return RANDOM_VECTOR
end

local function GET_RESOURCE_POSITION(RESOURCE_NAME)
    if workspace.Resources:FindFirstChild(RESOURCE_NAME) then
        local Zones = workspace.Resources[RESOURCE_NAME].Zones:GetChildren()

        local RANDOM_ZONE = rng:NextInteger(1, #Zones)
        local SELECTED_ZONE = Zones[RANDOM_ZONE]

        if SELECTED_ZONE then

            if RESOURCE_SETTINGS.RAYCASTABLE then
                local SURFACE_POSITION = GET_POSITION(SELECTED_ZONE)
                local UPDATED_SURFACE_VECTOR = Vector3.new(SURFACE_POSITION.X, RAY_HEIGHT, SURFACE_POSITION.Z)
                local VECTOR_DIRECTION = Vector3.new(0, -RAY_HEIGHT, 0)
                local Y_RAY = Ray.new(UPDATED_SURFACE_VECTOR, VECTOR_DIRECTION)

                local HIT, POSITION = workspace:FindPartOnRay(Y_RAY)

                local CFRAME_HIT = CFrame.new(POSITION)

                return {POSITION, CFRAME_HIT}

            else
                error("No compatibility for non-raycasting resources yet.")
            end
        else
            error("Invalid zone selected.")
        end
    end
end


function Spawner:Spawn(RESOURCE_NAME)
    local RESOURCE_POSITION = GET_RESOURCE_POSITION(RESOURCE_NAME)

    if RESOURCE_POSITION then
        if RESOURCE_MODULES[RESOURCE_NAME] then
            RESOURCE_MODULES[RESOURCE_NAME]:Spawn(RESOURCE_POSITION)
        else
            error("No module found for ".. RESOURCE_NAME)
        end
    end
end

return Spawner
```