-- Settings

-- Bools
local interpolation = true
local moveByGrid = true
local buildModePlacement = true

-- Ints
local rotationStep = 90
local maxHeight = 90
-- Numbers/Floats
local lerpSpeed = 0.7

-- Other
local gridTexture = ""

local placement = {}
placement.__index = placement

local players = game:GetService("Players")
local runService = game:GetService("RunService")

local player = players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local mouse = player:GetMouse()

--Constructor Variables
local GRID_SIZE
local ITEM_LOCATION
local ROTATE_KEY
local TERMINATE_KEY

-- Activation Variables
local object
local placedObjects
local ot
local stackable

-- Variables used in calculations
local posX
local posY
local posZ


-- Calculates initial y position above an object
local function calculateYPosition()
	
end

local function snap(x)
	return math.round(x/GRID_SIZE)*GRID_SIZE 
end

-- Calculates the models position based on grid
local function calculateItemPosition()
	if moveByGrid then
		posX = snap(mouse.Hit.X)
		posY = mouse.Hit.Y
		posZ = snap(mouse.Hit.Z)
	else
		posX = mouse.Hit.X
		posY = mouse.Hit.Y
		posZ = mouse.Hit.Z
	end
end

-- Sets models position based on pivot
local function translateObj()
	if placedObjects and object.Parent == placedObjects then
		calculateItemPosition()
		
		object:PivotTo(CFrame.new(posX, posY, posZ))
	end
	
end

local function approvePlacement()
	return true
end

-- Constructor function
function placement.new (g, objs, r, t)
	local data = {}
	local metaData = setmetatable(data, placement)
	
	GRID_SIZE = g
	ITEM_LOCATION = objs
	ROTATE_KEY = r
	TERMINATE_KEY = t
	
	data.grid = GRID_SIZE
	data.itemlocation = ITEM_LOCATION
	data.rotatekey = ROTATE_KEY
	data.terminatekey = TERMINATE_KEY
	
	return data
end

-- activates placement (id = name,pobjs = placedObjects, plt = plot, stk = stackable)
function placement:activate(id, pobjs, plt, stk)
	-- Assigns values for necessary
	object = ITEM_LOCATION:FindFirstChild(id):Clone()
	placedObjects = pobjs
	plot = plt
	stackable = stk
	
	-- Make sure placement can activate properly
	if not approvePlacement() then
		return "Placement could not activate"
	end
	
	-- Filters objeccts from mouse depending on stackable variable
	if not stackable then
		mouse.TargetFilter = placedObjects
	else
		mouse.TargetFilter = object
	end
	
	object.Parent = placedObjects
end

runService:BindToRenderStep("Input", Enum.RenderPriority.Input.Value, translateObj)

return placement