Model

-- Create a dice model with two halves and attach them together
local diceModel = Instance.new("Model")
diceModel.Name = "ChanceCube"

local diceTop = Instance.new("Part")
diceTop.Size = Vector3.new(4, 2, 4)
diceTop.Position = Vector3.new(0, 1, 0)
diceTop.Color = Color3.new(0, 0, 1)
diceTop.Parent = diceModel

local diceBottom = diceTop:Clone()
diceBottom.Position = Vector3.new(0, -1, 0)
diceBottom.Color = Color3.new(1, 0, 0)
diceBottom.Parent = diceModel

local weld = Instance.new("WeldConstraint")
weld.Part0 = diceTop
weld.Part1 = diceBottom
weld.Parent = diceModel

-- Put the dice up in the air above the workspace origin (does not require a primary part)
diceModel.Parent = workspace
diceModel:PivotTo(CFrame.new(0, 10, 0))

-- Assign the primary part before physical simulation
-- Without this line, the script will always output the same thing and the bounding box of the model will not change orientation
diceModel.PrimaryPart = diceTop

-- Wait a bit before rolling the dice (let it settle onto the floor)
for i = 5, 1, -1 do
	print("Rolling dice in...", i)
	task.wait(1)
end

diceTop:ApplyAngularImpulse(Vector3.new(15000, 1000, 5000))
diceTop:ApplyImpulse(Vector3.new(0, 3000, 0))
task.wait(1)

-- Wait for the roll to complete
while diceTop.AssemblyLinearVelocity.Magnitude > 0.1 or diceTop.AssemblyAngularVelocity.Magnitude > 0.1 do
	task.wait()
end

-- Get the dice orientation, impacted by the primary part
local orientation = diceModel:GetBoundingBox()
if orientation.YVector.Y > 0.5 then
	print("It's the boy!")
else
	print("It's his mother!")
end

local function resetPivot(model)
	local boundsCFrame = model:GetBoundingBox()
	if model.PrimaryPart then
		model.PrimaryPart.PivotOffset = model.PrimaryPart.CFrame:ToObjectSpace(boundsCFrame)
	else
		model.WorldPivot = boundsCFrame
	end
end

resetPivot(script.Parent)

local model = Instance.new("Model")
model.Parent = workspace

local RNG = Random.new()

for _ = 1, 5 do
	local part = Instance.new("Part")
	part.Anchored = true
	part.Size = Vector3.new(RNG:NextNumber(0.05, 5), RNG:NextNumber(0.05, 5), RNG:NextNumber(0.05, 5))
	part.Parent = model
end

print(model:GetExtentsSize())

local CollectionService = game:GetService("CollectionService")
local ReplicatedStorage = game:GetService("ReplicatedStorage")

-- Find all the models with the tag we want to replace
local items = CollectionService:GetTagged("Tree")
local newModel = ReplicatedStorage.FancyTreeReplacementModel
for _, item in items do
	-- Make the new item and scale / position it where the old one was
	local newItem = newModel:Clone()
	newItem:ScaleTo(item:GetScale())
	newItem:PivotTo(item:GetPivot())

	-- Add the same tag to the replacement
	CollectionService:AddTag(newItem, "Tree")

	-- Delete the old item and parent the new one
	newItem.Parent = item.Parent
	item:Destroy()
end

local START_POSITION = Vector3.new(-20, 10, 0)
local END_POSITION = Vector3.new(0, 10, 0)

local model = Instance.new("Model")
model.Parent = workspace

local part1 = Instance.new("Part")
part1.Size = Vector3.new(4, 4, 4)
part1.Position = START_POSITION
part1.Anchored = true
part1.BrickColor = BrickColor.new("Bright yellow")
part1.Parent = model

local part2 = Instance.new("Part")
part2.Size = Vector3.new(2, 2, 2)
part2.Position = START_POSITION + Vector3.new(0, 3, 0)
part2.Anchored = true
part2.BrickColor = BrickColor.new("Bright blue")
part2.Parent = model

model.PrimaryPart = part1
model.Parent = workspace

local obstruction = Instance.new("Part")
obstruction.Name = "Obstruction"
obstruction.Size = Vector3.new(10, 10, 10)
obstruction.Position = Vector3.new(0, 10, 0)
obstruction.Anchored = true
obstruction.BrickColor = BrickColor.new("Bright green")
obstruction.Parent = workspace

task.wait(3)

model:MoveTo(END_POSITION)

local START_POSITION = Vector3.new(-20, 10, 0)
local END_POSITION = Vector3.new(0, 10, 0)

local model = Instance.new("Model")

local part1 = Instance.new("Part")
part1.Size = Vector3.new(4, 4, 4)
part1.CFrame = CFrame.new(START_POSITION) * CFrame.Angles(0, math.rad(45), 0)
part1.Anchored = true
part1.BrickColor = BrickColor.new("Bright yellow")
part1.Parent = model

local part2 = Instance.new("Part")
part2.Size = Vector3.new(2, 2, 2)
part2.CFrame = part1.CFrame * CFrame.new(0, 3, 0)
part2.Anchored = true
part2.BrickColor = BrickColor.new("Bright blue")
part2.Parent = model

model.PrimaryPart = part1
model.Parent = workspace

local obstruction = Instance.new("Part")
obstruction.Name = "Obstruction"
obstruction.Size = Vector3.new(10, 10, 10)
obstruction.Position = Vector3.new(0, 10, 0)
obstruction.Transparency = 0.5
obstruction.Anchored = true
obstruction.BrickColor = BrickColor.new("Bright green")
obstruction.Parent = workspace

task.wait(3)
-- use TranslateBy to shift the model into the obstruction
model:TranslateBy(END_POSITION - START_POSITION)