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name: TweenBase
type: class
memory_category: Instances
summary: |
  Abstract base class for in-between interpolation handlers. `Class.Tween`
  inherits from `Class.TweenBase`.
description: |
  Abstract base class for in-between interpolation handlers; parent class of
  `Class.Tween`.
code_samples: []
inherits:
  - Instance
descendants:
  - Tween
tags:
  - NotCreatable
  - NotBrowsable
deprecation_message: ''
properties:
  - name: TweenBase.PlaybackState
    summary: |
      Read-only property that shows the current state for the `Class.Tween`
      animation.
    description: |
      Read-only property that shows the current stage for the `Class.Tween`
      animation. See `Enum.PlaybackState` for descriptions of each state. Change
      using functions like `Class.Tween:Play()`.
    code_samples:
      - Tween-PlaybackState
    type: PlaybackState
    tags:
      - ReadOnly
      - NotReplicated
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Behavior
    serialization:
      can_load: false
      can_save: true
    capabilities: []
methods:
  - name: TweenBase:Cancel
    summary: |
      Halts playback and resets the tween variables. If you then call
      `Class.TweenBase:Play()`, the properties of the tween resume interpolating
      towards their destination, but take the full length of the animation to do
      so.
    description: |
      Halts playback of a `Class.Tween` and resets the tween variables.

      Only resets the tween variables, not the properties being changed by the
      tween. If you cancel a tween halfway through its animation, the properties
      do not reset to their original values. Differs from
      `Class.TweenBase:Pause()` in that once resumed, it takes the full duration
      of the tween to complete the animation.
    code_samples:
      - Tween-Cancel
    parameters: []
    returns:
      - type: ()
        summary: ''
    tags: []
    deprecation_message: ''
    security: None
    thread_safety: Unsafe
    capabilities: []
  - name: TweenBase:Pause
    summary: |
      Halts playback of the tween. Doesn't reset its progress variables, meaning
      that if you call `Class.TweenBase:Play()`, the tween resumes playback from
      the moment it was paused.
    description: |
      Halts playback of the tween. Doesn't reset its progress variables, meaning
      that if you call `Class.TweenBase:Play()`, the tween resumes playback from
      the moment it was paused.

      If you want to reset the progress variables of the tween, use
      `Class.TweenBase:Cancel()`.

      You can only pause tweens that are in the
      `Class.TweenBase.PlaybackState|PlaybackState` of
      `Enum. PlaybackState.Playing`; tweens in other states won't pause. If a
      tween is in a different `Class.TweenBase.PlaybackState|PlaybackState` such
      as `Enum. PlaybackState.Delayed` (as a result of its
      `Datatype.TweenInfo.DelayTime` being greater than 0), attempting to pause
      the tween will fail and the tween will play following its specified delay
      time.
    code_samples:
      - Tween-Pausing
    parameters: []
    returns:
      - type: ()
        summary: ''
    tags: []
    deprecation_message: ''
    security: None
    thread_safety: Unsafe
    capabilities: []
  - name: TweenBase:Play
    summary: |
      Starts playback of a tween. Note that if playback has already started,
      calling `Play()` has no effect unless the tween has finished or is stopped
      (either by `Class.TweenBase:Cancel()` or `Class.TweenBase:Pause()`).
    description: |
      Starts playback of a tween. Note that if playback has already started,
      calling `Play()` has no effect unless the tween has finished or is stopped
      (either by `Class.TweenBase:Cancel()` or `Class.TweenBase:Pause()`).

      Multiple tweens can be played on the same object at the same time, but
      they must not animate the same property. If two tweens attempt to modify
      the same property, the initial tween is cancelled and overwritten by the
      most recent tween (see examples).
    code_samples:
      - Tween-Creation
      - Tween-Conflict
    parameters: []
    returns:
      - type: ()
        summary: ''
    tags: []
    deprecation_message: ''
    security: None
    thread_safety: Unsafe
    capabilities: []
events:
  - name: TweenBase.Completed
    summary: |
      Fires when the tween finishes playing or when stopped with
      `Class.TweenBase:Cancel()`.
    description: |
      Fires when the tween finishes playing or when stopped with
      `Class.TweenBase:Cancel()`.

      Passes the `Enum.PlaybackState` of the tween to any connected functions to
      give an indication of why the tween ended. Note that calling
      `Class.TweenBase:Pause()` does not fire the `Completed` event.
    code_samples:
      - Tween-Completed
      - Tween-Conflict
      - Tween-Completed-2
    parameters:
      - name: playbackState
        type: PlaybackState
        default:
        summary: |
          The `Enum.PlaybackState` of the tween upon completion.
    tags: []
    deprecation_message: ''
    security: None
    capabilities: []
callbacks: []