Issues with bezier curve

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#1

What do you want to achieve? So, i am trying to move a rock using the bezier curves to make a attack, but it is bugging my script, like, it is duplicating everything inside the function that i use the bezier curve, and it is delaying the animantion, as you can see in my script and the video, i dont have any iddea that what is happening.

local RP = game:GetService("ReplicatedStorage")
local rockFlipRemote = RP.remotes.rockflip
local ss = game:GetService("ServerStorage")
local modules = ss:WaitForChild("Modules")
local slow = require(modules:WaitForChild("slow"))
local runService = game:GetService("RunService")
local rockModule = require(modules:WaitForChild("RockModule"))
local utilities = require(modules:WaitForChild("particleEmitter"))
local hitbox = require(modules:WaitForChild("hitbox"))
local hitService = require(modules:WaitForChild("hitService"))

local params = RaycastParams.new()
params.FilterType = Enum.RaycastFilterType.Include
params.FilterDescendantsInstances = {workspace.map}

function lerp(t,a,b)
	return a*(1-t) + b*t
end

function quadBezier(t,p0,p1,p2)
	local l1 = lerp(t,p0,p1)
	local l2 = lerp(t,p1,p2)
	local quad = lerp(t,l1,l2)
	return quad
end

function rockBezier(humanoidRootPart)
	local rock = Instance.new("Part",workspace.fx)
	rock.CFrame = humanoidRootPart.CFrame * CFrame.new(0,-6,12)
	rock.Size = Vector3.new(3,3,3)
	rock.Anchored = true
	rock.CanQuery = false
	rock.CanCollide = false
	rock.CanTouch = false	
	rock.Name = "rockkkkkk"	
	
	local detect = workspace:Raycast(rock.Position + Vector3.new(0,5,0), Vector3.new(0,-10,0),params)
	
	if detect then
		rock.Material = detect.Material
		rock.Color = detect.Instance.Color
	else
		rock.Material = "Concrete"
		rock.Color = Color3.fromRGB(98,95,97)
	end

	local pointA = rock.Position
	local pointC = rock.CFrame * CFrame.new(0,0,-24).Position
	local pointB = rock.CFrame * CFrame.new(0,30,-12).Position
	
	for i = 0,1,0.025 do
		local cframe = quadBezier(i,pointA,pointB,pointC)
		rock.Position = cframe
		task.wait()
	end
	
	task.wait(1)
	rock:Destroy()
end

rockFlipRemote.OnServerEvent:Connect(function(plr)
	local character = plr.Character
	local humanoid = character:WaitForChild("Humanoid")
	local humanoidRootPart = character:FindFirstChild("HumanoidRootPart")
	
	local hitbox = hitbox.new()
	hitbox.Size = Vector3.new(8,8,8)
	hitbox.CFrame = humanoidRootPart
	hitbox.Offset = CFrame.new(0,4,-5)
	hitbox.Visualizer = true
	
	local animation = Instance.new("Animation")
	animation.AnimationId = "http://www.roblox.com/asset/?id=anim"
	local animationTrack = humanoid:LoadAnimation(animation)
	animationTrack:Play()
	
	local rockThrowAnim = Instance.new("Animation")
	rockThrowAnim.AnimationId = "http://www.roblox.com/asset/?id=anim"
	local rockThrowAnimTrack = humanoid:LoadAnimation(rockThrowAnim)
	
	hitbox.onTouch = function(enemyHum)
		if enemyHum ~= humanoid then
			local enemy = enemyHum.Parent
			local enemyHumRp = enemy.HumanoidRootPart

			local BlockBreak = true
			local damage = 10
			local stunDuration = nil
		
		
			local bv = Instance.new("BodyVelocity")
			bv.MaxForce = Vector3.new(100000,100000,100000)
			bv.Velocity = Vector3.new(0,40,0)
			bv.Parent = enemyHumRp
			game.Debris:AddItem(bv,0.2)	
			
			rockBezier(humanoidRootPart)
			
			hitService.hit(enemyHum,nil,nil,nil,character,nil,nil,nil,nil,nil)
			
			rockThrowAnimTrack:Play()
		end	
	end	
	
	animationTrack.KeyframeReached:Connect(function(kf)
		if kf == "flip" then	
			rockModule.RockFlip(humanoidRootPart)	
			
			hitbox:Start()
			task.wait(0.1)
			hitbox:Destroy()
			
		end
	end)
end)

here is a video showing what is happening: