wait(5)

local FastCast = require(game.ReplicatedStorage.FastCastRedux)
local PartCache = require(game.ReplicatedStorage.PartCache)

local bulletsFolder = workspace:FindFirstChild("BulletFolder") or Instance.new("Folder", workspace)
bulletsFolder.Name = "BulletFolder"

local bulletTemplate = game.ReplicatedStorage.CosmeticBullet

local caster = FastCast.new()

local castParams = RaycastParams.new()
castParams.FilterType = Enum.RaycastFilterType.Blacklist
castParams.FilterDescendantsInstances = {script.Parent}
castParams.IgnoreWater = true

local bulletCache = PartCache.new(bulletTemplate, 100, bulletsFolder)

local castBehavior = FastCast.newBehavior()
castBehavior.RaycastParams = castParams
castBehavior.Acceleration = Vector3.new(0, 0, 0)
castBehavior.AutoIgnoreContainer = false
castBehavior.CosmeticBulletContainer = bulletsFolder
castBehavior.CosmeticBulletProvider = bulletCache

local function onLengthChanged(cast, lastPoint, direction, length, velocity, bullet)
	if bullet then
		local bulletLength = bullet.Size.Z/2
		local offset = CFrame.new(0, 0, -(length - bulletLength))
		bullet.CFrame = CFrame.lookAt(lastPoint, lastPoint + direction):ToWorldSpace(offset)
	end
end

local function onRayHit(cast, result, velocity, bullet)
	local hit = result.Instance

	local character = hit:FindFirstAncestorWhichIsA("Model")
	if character and character:FindFirstChild("Humanoid") then
		character.Humanoid:TakeDamage(50)
	end

	delay(2, function()
		bulletCache:ReturnPart(bullet)
	end)
end

local turretJoint = script.Parent.Main.Upper.TurretJoint
local mainJoint = script.Parent.Main.Joint
local cooldown = false

local damage = 10
local fireRate = 0.02
local distance = 200

local function GetClosestCharacter (fromPosition, range)
	local bestMagnitude = 1000000
	local closestChar = nil
	for i, v in ipairs(game.Players:GetChildren()) do
		local char = v.Character
		local head = char.Head
		local distance = (fromPosition - head.Position).Magnitude
		if distance < bestMagnitude and distance < range and char.Humanoid.Health > 0 then
			bestMagnitude = distance
			closestChar = char
		end
	end
	return closestChar
end

while wait(fireRate) do
	local target = nil
	if script.Parent.Active.Value == true then
		local char = GetClosestCharacter(turretJoint.Position, distance)
		if char then
			turretJoint.CFrame = turretJoint.CFrame:Lerp(CFrame.new(turretJoint.Position, char.HumanoidRootPart.Position), 0.5)
			mainJoint.Orientation = Vector3.new(0,turretJoint.Orientation.Y,0)
			if cooldown == false then
				local origin = script.Parent.Main.Upper.FirePoint.Position
				local direction = (char.HumanoidRootPart.Position - origin).Unit
				cooldown = true
				caster:Fire(origin, direction, 1000, castBehavior)
				delay(2, function()
					cooldown = false
				end)
			end
		end
	end
end

caster.LengthChanged:Connect(onLengthChanged)
caster.RayHit:Connect(onRayHit)