How do I do this with Bezier curve?

Help and Feedback Scripting Support
#1

Simple but not simple, I have a bezier curve line but im stuck on how to make my Ball
Follow the bezier curve line? sorry if I didn’t explain it right.
thank you for the time!

1 Like
#2

How are you calculating the bezier line? Couldn’t you just lerp the ball to follow the next point in the curve?

#3

Create a loop, calculate the position using the bezier curve formula with the time as the index of the loop. Place the ball there then continue until it’s finished the curve.

#4

Hold up Im confused, Could you explain it more specifically?
thanks.

#5

your final calculation for your bezier curve, just set the position of your ball to that

For example when I did the final calculation for a quadratic bezier curve I would just set the part position to the value:

local l1 = lerp(fruitVal.PrimaryPart.Position, lerpPart.Position, t)
local l2 = lerp(lerpPart.Position, HRP.Position, t)
local quad = lerp(l1, l2, t)
					
plrPart.Position = quad
#6

By the way Im making it so the ball flings as my Curve when I click a ClickDetector.
some of my code as an example;

local function ConstructQuadraticBezier(start, finish, control)
	local Line1 = ConstructLinearBezier(start, control)
	local Line2 = ConstructLinearBezier(control, finish)
	return function(t)
		return LinearBezier(Line1(t), Line2(t), t)
	end
end

local Bezier = ConstructQuadraticBezier(startpart.Position, endpart.Position, controlpart.Position)
#7

You can start a loop,

for i = 0, 1, 0.001 do
	local Point = ConstructQuadraticBezier(startpart.Position, endpart.Position, controlpart.Position)(i)
end

Point, would be equal to the point on the curve at i.

#8

Yeah I already Have that…
I already did the bezier curve, want to see my complete code?

#9

Sure
that would be helpful for me

#10

OK , here is my code.

local points = workspace.Points
local startpart = points.Start
local endpart = points["90Right"]
local pointpart = script.Start
local controlpart = points.Control

local function ConstructLinearBezier(start, finish)
	local range = finish - start
	return 	function(t)			--start + range*t
		return start + range*t
	end
end

local function LinearBezier(start, finish, t)
	
	local range = finish - start
	return start + range*t
end


local function ConstructQuadraticBezier(start, finish, control)
	local Line1 = ConstructLinearBezier(start, control)
	local Line2 = ConstructLinearBezier(control, finish)
	return function(t)
		return LinearBezier(Line1(t), Line2(t), t)
	end
end
local function Point(position)
	local part = pointpart:Clone()
	part.CFrame = CFrame.new(position)
	part.Parent = workspace.BezierCloned
	return part 
end


local Bezier = ConstructQuadraticBezier(startpart.Position, endpart.Position, controlpart.Position)


for t = 0, 1, 1/100 do
Point(Bezier(t))
end

Thanks.