Bezier curve not working properly

[ymmt_7 (ymmt)]

hi. right now, i’m making a game that you could say is like slap battles. one of the “abilities” is called banhammer. it’s supposed to have a leap ability. it works using a bezier curve. problem is, once the player reaches point2 (the end point), it keeps moving backwards.

ability script:

local bezier_curve = require(game.ServerScriptService.modules.bezier_curve)
local knockback = require(game.ServerScriptService.modules.knockback)

script.Parent.RemoteEvent.OnServerEvent:Connect(function(plr)
	local char = plr.Character
	local hrp = char.HumanoidRootPart
	
	if char:GetAttribute("stunned") then return end
	
	script.Parent.Parent.canhit.Value = false
	local ff = Instance.new("ForceField")
	hrp.Anchored = true
	ff.Visible = false
	
	local anim = char.Humanoid.Animator:LoadAnimation(script.anim)
	ff.Parent = char
	anim:Play()
	
	local part1 = Instance.new("Part")
	part1.Transparency = 1
	part1.Anchored = true
	part1.CanCollide = false
	part1.CanQuery = false
	part1.CanTouch = false
	
	part1.Position = hrp.Position
	part1.Position = hrp.CFrame.LookVector + Vector3.new(0, 12, 6)
	part1.Parent = workspace
	
	local part2 = Instance.new("Part")
	part2.Transparency = 1
	part2.Anchored = true
	part2.CanCollide = false
	part2.CanQuery = false
	part2.CanTouch = false
	part2.Parent = workspace

	part2.Position = hrp.Position
	part2.Position = hrp.CFrame.LookVector + Vector3.new(0, 0, 12)
	part2.Parent = workspace
	
	bezier_curve(hrp, hrp.Position, part1.Position, part2.Position, 10)
	if hrp:IsGrounded() == true then
		anim:Stop()
		hrp.Anchored = false
		
		script.Parent.Parent.hitbox.Touched:Connect(function(hit)
			if hit.Parent:FindFirstChild("ForceField") then return end
			
			if hit.Parent:FindFirstChild("Humanoid") then
				local hit_char = hit.Parent
				local hit_hum = hit_char.Humanoid
				
				hit_hum:TakeDamage(30)
				knockback(60, 800000, 10, hit_char, char, 2)
			end
		end)
	end
	
	ff:Destroy()
	anim:Stop()
	hrp.Anchored = false
end)

bezier module:

local bezier_curve = {}
local function bezier_curve(part, start, curve, finish, TIME)
	local function QuadraticBezier(t,p0,p1,p2)
		return (1-t)^2*p0+2*(1-t)*t*p1+t^2*p2;
	end

	for t = 0,TIME,0.01 do
		local TargetPosition = QuadraticBezier(t , start, curve, finish);
		part.Position = TargetPosition;
		task.wait(0.01)
	end
	return
end
return bezier_curve

please help me out
if you need a vid add me on discord and ill send you one (my user is xodouble)

[Riesegarder]

Does the movement finish after 1 second? I’m guessing it’s because you’re using a value greater than 1 as an argument for t in the curve. Try normalizing t by doing this:

local TargetPosition = QuadraticBezier(t/TIME, start, curve, finish)