How to Resize a part from the top

[descreetOP]

Hi, I would like to make a construct that represents stats with 3 parts.
Each of these parts has a script that every 3 seconds should change the Y axis of these parts to a random number.

Script:

local Part = script.Parent

while true do
	wait(3)
	local num = math.random(2,16)
	Part.Size = Vector3.new(1.596, num, 4.54)
end

The script works but

Start Game Status:

After Script Execution Status:

Basically i wanted to Resize those parts from the top.
Thanks

[aliaun125 (David)]

u can change the part position on certain axis according to the size axis. for e.g if u increased the size vertically +1 then u need to add .5 on the y-axis position. In your case

while true do
	wait(3)
	local num = math.random(2,16)
	Part.Size = Vector3.new(1.596, num, 4.54)
    Part.Positon = Vector3.new(0, num/2,0)
end

[descreetOP]

@aliaun125

while true do
	wait(3)
	local num = math.random(2,16)
	Part.Size = Vector3.new(1.596, num, 4.54)
    Part.Positon += Vector3.new(0, num/2,0)
end

The part went out of the map step by step

[crossbar]

Try:

local localPart = script.Parent

function changePartSizeBy(part, sizeChange, pos)

	if pos then
		part.Size += sizeChange
		part.Position += part.CFrame:VectorToWorldSpace(sizeChange / 2)
	else
		part.Size += sizeChange
		part.Position -= part.CFrame:VectorToWorldSpace(sizeChange / 2)
	end

end 

wait(5)

print("Working...")

local heightIncrease = 5 -- However high you want it to increase by

changePartSizeBy(localPart, Vector3.new(0, heightIncrease, 0), true)

--Where localPart is the part you want to increase the height of

[descreetOP]

It works but i wanted the part to change size by a math.random from 1 to 16.
As an example: the math.random outputs 5, The part Y size should change to 5 but the part should be attached to the floor in the same time

[0786ideal (ideal)]

if you vvan’t this relative, you have to divide the half of cframe’s position, in -Y axis

[iamashadowguy (Daze)]

local function resizeUpward(part: BasePart, size: number)
	if typeof(part) ~= "Instance" or not part:IsA("BasePart") then
		error("Invalid first argument!")
	end
	if type(size) ~= "number" then
		error("Invalid second argument!")
	end
	local rootPoint: Vector3 = part.Position - Vector3.new(0, part.Size.Y/2, 0)
	part.Size = Vector3.new(part.Size.X, size, part.Size.Z)
	part.Position = rootPoint + Vector3.new(0, size/2, 0)
end

while task.wait(1) do
	resizeUpward(PART_HERE, math.random(1, 16))
end

[crossbar]

Okay, in that case just make heightIncrease equal to math.random(16). No matter what number you put in the function, it will make it increase up by that number relative to its current position. Hope that helped.

Like this:

local heightIncrease = math.random(16)

[Rabbit_Lord]

@aliaun125

while true do
	wait(3)
	local num = math.random(2,16)
	Part.Size = Vector3.new(1.596, num, 4.54)
    Part.Positon += Vector3.new(0, num/2,0)
end

This works, just change:

Part.Positon += Vector3.new(0, num/2,0)

to

Part.Positon = Vector3.new(0, num/2,0)

[descreetOP]

How can i Tween The part without breaking all the code?
Thank you so much

[iamashadowguy (Daze)]

--!strict

local ts = game:GetService("TweenService")
local tweenInfo = TweenInfo.new(0.7, Enum.EasingStyle.Quart, Enum.EasingDirection.InOut)

local function resizeUpwardTweened(part: BasePart, size: number)
	if typeof(part) ~= "Instance" or not part:IsA("BasePart") then
		error("Invalid first argument!")
	end
	if type(size) ~= "number" then
		error("Invalid second argument!")
	end
	local rootPoint: Vector3 = part.Position - Vector3.new(0, part.Size.Y/2, 0)
	local tweenData = {
		Size = Vector3.new(part.Size.X, size, part.Size.Z),
		Position = rootPoint + Vector3.new(0, size/2, 0)
	}
	ts:Create(part, tweenInfo, tweenData):Play()
end

while task.wait(1) do
	resizeUpwardTweened(PART_HERE, math.random(1, 16))
end