Controller (Local Script / EP.09)

local Players = game:GetService("Players")
local physicsservice = game:GetService("PhysicsService")
local replicatedstorage = game:GetService("ReplicatedStorage")
local runservice = game:GetService("RunService")
local userinputservice = game:GetService("UserInputService")

local gold = Players.LocalPlayer:WaitForChild("Gold")
local events = replicatedstorage:WaitForChild("Events")
local functions = replicatedstorage:WaitForChild("Functions")
local requestTowerFuntion = functions:WaitForChild("RequestTower")
local tower = replicatedstorage:WaitForChild("Towers")
local spawntowerevent = events:WaitForChild("SpawnTower")
local camera = workspace.CurrentCamera
local gui = script.Parent

local towertospawn = nil
local canplace = false
local rotation = 0
local platedTower = 0
local maxTowers = 10

local function UpdateGold()
    gui.Gold.Text = gold.Value
end
UpdateGold()
gold.Changed:Connect(UpdateGold)

local function MouseRaycast(blacklist)
    local mouseposition = userinputservice:GetMouseLocation()
    local mouseray = camera:ViewportPointToRay(mouseposition.X,mouseposition.Y)
    local raycastparams = RaycastParams.new()

    raycastparams.FilterType = Enum.RaycastFilterType.Blacklist
    raycastparams.FilterDescendantsInstances = blacklist

    local raycastresult = workspace:Raycast(mouseray.Origin,mouseray.Direction*1000, raycastparams)

    return raycastresult
end

local function RemovePlaceholderTower()
    if towertospawn then
        towertospawn:Destroy()
        towertospawn = nil
        rotation = 0
    end
end

local function AddPlaceholderTower(name)
    local towerExists = tower:FindFirstChild(name)
    if towerExists then
        RemovePlaceholderTower()
        towertospawn = towerExists:Clone()
        towertospawn.Parent = workspace

        for i, object in ipairs(towertospawn:GetDescendants()) do
            if object:IsA("BasePart") then
                physicsservice:SetPartCollisionGroup(object, "Tower")
                object.Material = Enum.Material.ForceField
            end
        end
    end
end

local function ColorPlanceholderTower(color)
    for i, object in ipairs(towertospawn:GetDescendants()) do
        if object:IsA("BasePart") then
            object.Color = color
        end
    end
end

gui.Tower.Title.Text = "Towers"..platedTower.."/"..maxTowers
for i , tower in pairs(tower:GetChildren()) do
    local button = gui.Tower.Template:Clone()
    local config = tower:WaitForChild("Config")
    button.Name = tower.Name
    button.Image = config.Image.Texture
    button.Visible = true

    button.LayoutOrder = config.Price.Value
    button.Price.Text = config.Price.Value

    button.Parent = gui.Tower

    button.Activated:Connect(function()
        local allowedToSpawn = requestTowerFuntion:InvokeServer(tower.Name)
        if allowedToSpawn then
            AddPlaceholderTower(tower.Name)
        end
    end)
end

userinputservice.InputBegan:Connect(function(input, processed)
    if processed then
        return
    end

    if towertospawn then
        if input.UserInputType == Enum.UserInputType.MouseButton1 then
            if canplace then
                spawntowerevent:FireServer(towertospawn.Name, towertospawn.PrimaryPart.CFrame)
                platedTower += 1
                gui.Tower.Title.Text = "Towers"..platedTower.."/"..maxTowers
                RemovePlaceholderTower()
            end
        elseif input.KeyCode == Enum.KeyCode.R then
            rotation += 90
        end
    end

end)

runservice.RenderStepped:Connect(function()
    if towertospawn then
        local result = MouseRaycast({towertospawn})
        if result and result.Instance then
            if result.Instance.Parent.Name == "TowerArea" then
                canplace = true
                ColorPlanceholderTower(Color3.new(0,1,0))
            else
                canplace = false
                ColorPlanceholderTower(Color3.new(1,0,0))
            end
            local x = result.Position.X
            local y = result.Position.Y + towertospawn.Humanoid.HipHeight + 4
            local z = result.Position.Z

            local cframe = CFrame.new(x,y,z) *CFrame.Angles(0,math.rad(rotation),0)
            towertospawn:SetPrimaryPartCFrame(cframe)
        end
    end
end)