local hasLoaded = plugin:GetSetting("pluginHasLoaded")
if not hasLoaded then
    plugin:SetSetting("pluginHasLoaded", true)
end

local toolbar = plugin:CreateToolbar("Tree Brush")

local button = toolbar:CreateButton(
    "Tree Brush",
    "",
    "http://www.roblox.com/asset/?id=216846095"
)
local ChangeHistoryService = game:GetService("ChangeHistoryService")
function createGui()
    local ScreenGui = Instance.new("ScreenGui")
    ScreenGui.Parent = workspace
    local Frame1 = Instance.new("Frame")
    Frame1.Name = "Frame1"
    Frame1.Parent = ScreenGui
    Frame1.BackgroundTransparency = 0.5
    Frame1.BackgroundColor3 = Color3.new(1,1,1)
    Frame1.Position = UDim2.new(0,20,0,20)
    Frame1.Size = UDim2.new(0,150,0,250)
    local Frame = Instance.new("Frame")
    Frame.Name = "Frame"
    Frame.Parent = Frame1
    Frame.BackgroundTransparency = 1
    Frame.BackgroundColor3 = Color3.new(1,1,1)
    Frame.Position = UDim2.new(0,10,0,10)
    Frame.Size = UDim2.new(1,-20,1,-20)
    local Size = Instance.new("TextButton")
    Size.Name = "Size1"
    Size.Parent = Frame
    Size.BackgroundTransparency = 1
    Size.BackgroundColor3 = Color3.new(1,1,1)
    Size.Position = UDim2.new(0,0,0,0)
    Size.Size = UDim2.new(1,0,0,10)
    Size.Text = "Size"
    local Size_Slider = Instance.new("TextButton")
    Size_Slider.Name = "Size_Slider"
    Size_Slider.Parent = Frame
    Size_Slider.BackgroundTransparency = 0
    Size_Slider.BackgroundColor3 = Color3.new(0,0,0)
    Size_Slider.Position = UDim2.new(0,0,0,25)
    Size_Slider.Size = UDim2.new(1,0,0,2)
    Size_Slider.Text = ""
    local Button = Instance.new("TextButton")
    Button.Name = "Button"
    Button.Parent = Size_Slider
    Button.BackgroundTransparency = 0
    Button.BackgroundColor3 = Color3.new(1,1,1)
    Button.Position = UDim2.new(0,-8,0,-8)
    Button.Size = UDim2.new(0,16,0,16)
    Button.Text = ""
    local Density = Instance.new("TextButton")
    Density.Name = "Density"
    Density.Parent = Frame
    Density.BackgroundTransparency = 1
    Density.BackgroundColor3 = Color3.new(1,1,1)
    Density.Position = UDim2.new(0,0,0,50)
    Density.Size = UDim2.new(1,0,0,10)
    Density.Text = "Density"
    local Density_Slider = Instance.new("TextButton")
    Density_Slider.Name = "Density_Slider"
    Density_Slider.Parent = Frame
    Density_Slider.BackgroundTransparency = 0
    Density_Slider.BackgroundColor3 = Color3.new(0,0,0)
    Density_Slider.Position = UDim2.new(0,0,0,75)
    Density_Slider.Size = UDim2.new(1,0,0,2)
    Density_Slider.Text = ""
    local Button = Instance.new("TextButton")
    Button.Name = "Button"
    Button.Parent = Density_Slider
    Button.BackgroundTransparency = 0
    Button.BackgroundColor3 = Color3.new(1,1,1)
    Button.Position = UDim2.new(0,-8,0,-8)
    Button.Size = UDim2.new(0,16,0,16)
    Button.Text = ""
    return ScreenGui
end

Gui,Size,Density,SValue,DValue,Clicked = nil,nil,nil,nil,nil,false

button.Click:connect(function()
    if plugin:IsActivated() then
        plugin:Deactivate()
        Gui:Destroy()
        Sphere.Parent = nil
    else
        plugin:Activate(true) -- Neccessary to listen to mouse input'
        Gui = createGui()
        Gui.Parent = game.CoreGui
        Size = Gui.Frame1.Frame.Size_Slider
        Density = Gui.Frame1.Frame.Density_Slider
        SValue = 50
        DValue = 1
        GuiPress()
        local Trees = workspace:FindFirstChild("Trees")
        if Trees == nil or not Trees:IsA("Folder") then
            local Trees = Instance.new("Folder")
            Trees.Parent = workspace
            Trees.Name = "Trees"
        end
    end
end)

-- function

function createSphere(Size)
    local Ball = Instance.new("Part")
    Ball.Shape = Enum.PartType.Ball
    Ball.Size = Vector3.new(Size,Size,Size)
    Ball.Anchored = true
    Ball.Transparency = 0.75
    Ball.BrickColor = BrickColor.new("Bright red")
    Ball.TopSurface = Enum.SurfaceType.Smooth
    Ball.BottomSurface = Enum.SurfaceType.Smooth
    return Ball
end

-- Setup mouse
local mouse = plugin:GetMouse()
Pressed = false

Sphere = createSphere(50)

mouse.Button1Down:connect(function() -- Binds function to left click
    if game.ServerStorage:FindFirstChild("Trees") ~= nil then
        Pressed = true
        Sphere.Parent = workspace.Trees
        mouse.TargetFilter = workspace.Trees
        repeat
            local target = mouse.Target
            local hit = mouse.Hit
            local Touching = Sphere:GetTouchingParts()

            Sphere.CFrame = CFrame.new(mouse.Hit.p)
            NumberOfTrees = SValue * (DValue/100)--.5 Tree per stud max, .02 Trees per stud min
            for i = 1,NumberOfTrees do
                if #Touching < NumberOfTrees then
                    PlaceTree(Sphere.Position)
                end
            end

            wait()
        until Pressed == false
        Sphere.Transparency = 0.95
        ChangeHistoryService:SetWaypoint("Drew Terrain")
    else
        print("Tree folder missing from game.ServerStorage")
    end
end)

mouse.Button1Up:connect(function()
    if Clicked then
        Clicked = false
    end
    Pressed = false
    repeat wait()
        Sphere.CFrame = mouse.Hit
    until Pressed or not plugin:IsActivated()
end)


function PlaceTree(Position)
    local CF = CFrame.new(Position) * CFrame.Angles(0,math.rad(math.random(0,360)),0)
    CF = CF * CFrame.new(math.random(0,Sphere.Size.z/2),0,0)
    Position = CF.p
    local Start = Vector3.new(Position.x,300,Position.z)
    local End   = Vector3.new(Position.x,0,Position.z)

    local ray = Ray.new(Start, (End - Start).unit*750)

    local part,pos = workspace:FindPartOnRay(ray,workspace.Trees)
    if part ~= nil then
        local T = game.ServerStorage.Trees:GetChildren()
        local t = math.random(1,#T)
        local tree = T[t]:clone()
        local size = math.random(70,120)/100
        tree.Size = tree.Size*size
        tree.CFrame = CFrame.new(pos.x,pos.y,pos.z)*CFrame.Angles(0,math.rad(math.random(0,359)),0)*CFrame.new(0,tree.Size.Y/2-0.4,0)
        tree.Parent = workspace.Trees
    end
end



function GuiPress()
    Size.Button.MouseButton1Down:connect(function()
        Clicked = true
        repeat
            Size.Button.Position = UDim2.new(0,math.clamp(mouse.x - Size.AbsolutePosition.x - 8,-8,122),0,-8)
            -- -8, 122
            --SValue = math.clamp(math.floor((Size.Button.Position.X.Offset / 130) * 100)/100,.25,1)*200
            SValue = math.floor(math.clamp(((Size.Button.Position.X.Offset + 8)/130)+.05,.05,1) * 1000)
            Sphere.Size = Vector3.new(SValue,SValue,SValue)
            Gui.Frame1.Frame.Size1.Text = "Size: "..SValue
            wait()
        until Clicked == false
    end)

    Density.Button.MouseButton1Down:connect(function()
        Clicked = true
        repeat
            Density.Button.Position = UDim2.new(0,math.clamp(mouse.x - Density.AbsolutePosition.x - 8,-8,122),0,-8)
            DValue = math.floor(math.clamp(((Density.Button.Position.X.Offset + 8)/130)+.25,.25,1) * 25)
            Sphere.Transparency = (2 - DValue)/2
            Gui.Frame1.Frame.Density.Text = "Density: ".. DValue
            wait()
        until Clicked == false
    end)

    Size.Button.MouseButton1Up:connect(function()
        if Clicked then
            Clicked = false
        end
    end)

    Density.Button.MouseButton1Up:connect(function()
        if Clicked then
            Clicked = false
        end
    end)
end