Others

Tweening models positions

TweenStep currently does not support tweening models as its still in the works, for now we will have to rely on making our own function for tweening models.

local TweenStep = require(12237401000)
local StepInfo = TweenStep.StepInfo

local function TweenModel(model, stepInfo, goal)
   local controler = {cur = model:GetPivot()}
   local Tween = TweenStep.new(controler, stepInfo, {cur = goal}, false)
   Tween:Play()
   Tween.TweenUpdated:Connect(function(durationDelta:number, tweenDelta:number)
      model:SetPivot(controler.cur)
   end)
   Tween.Completed:Wait()
   model:SetPivot(goal)
end

TweenModel(workspace.Model, StepInfo.new(5, "InOutSine"), workspace.Model:GetPivot() + workspace.Model:GetPivot().UpVector * 7)

Tweening model sizes

local TweenStep = require(12237401000)
local StepInfo = TweenStep.StepInfo

local function resizeModel(model, a)
   local base = model:GetPivot().Position
   for _, part in pairs(model:GetDescendants()) do
      if part:IsA("BasePart") then
         part.Position = base:Lerp(part.Position, a)
         part.Size *= a
      end
   end
end

local function TweenModelSize(model, stepInfo, multiplier)
   local controler = {cur = 1, old = 1}
   local Tween = TweenStep.new(controler, stepInfo, {cur = multiplier}, false)
   Tween:Play()
   Tween.TweenUpdated:Connect(function(durationDelta:number, tweenDelta:number)
      resizeModel(model, (controler.cur*(multiplier-1) + 1)/(controler.old*(multiplier-1) + 1))
      controler.old = controler.cur
   end)
   Tween.Completed:Wait()
   resizeModel(model, (multiplier*(multiplier-1) + 1)/(controler.old*(multiplier-1) + 1))
end

-- WARNING: THE SIZE MULTIPLIER IS NOT FULLY ACCURATE!
TweenModelSize(script.Parent, StepInfo.new(4, "InOutSine"), 3)