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  1. API Reference
  2. AnimationTrack

AnimationTrack

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  1. apireference
  2. animationtrack

AnimationTrack

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Controls the playback of an animation on a Humanoid or AnimationController. This object cannot be created, instead it is returned by the Humanoid/LoadAnimation method.

Properties

Animation

Animation

[ReadOnly] [NotReplicated]

The Animation object that was used to create this AnimationTrack.
bool

IsPlaying

[ReadOnly] [NotReplicated]

A read only property that returns true when the AnimationTrack is playing.
float

Length

[ReadOnly] [NotReplicated]

A read only property that returns the length (in seconds) of an AnimationTrack. This will return 0 until the animation has fully loaded and thus may not be immediately available.
bool

Looped

This property sets whether the animation will repeat after finishing. If it is changed while playing the result will take effect after the animation finishes.
AnimationPriority

Priority

This property sets the priority of an AnimationTrack. Depending on what this is set to, playing multiple animations at once will look to this property to figure out which Keyframe Poses should be played over one another.
float

Speed

[ReadOnly] [NotReplicated]

The Speed of an AnimationTrack is a read only property that gives the current playback speed of the AnimationTrack. This has a default value of 1. When speed is equal to 1, the amount of time an animation takes to complete is equal to AnimationTrack/Length (in seconds).
float

TimePosition

[NotReplicated]

Returns the position in time in seconds that an AnimationTrack is through playing its source animation. Can be set to make the track jump to a specific moment in the animation.
float

WeightCurrent

[ReadOnly] [NotReplicated]

WeightCurrent is a read-only property that gives the current weight of the AnimationTrack. It has a default value of 1.
float

WeightTarget

[ReadOnly] [NotReplicated]

WeightCurrent is a read-only property that gives the current weight of the AnimationTrack. It has a default value of 1 and is set when AnimationTrack/Play, AnimationTrack/Stop or AnimationTrack/AdjustWeight is called.

Inherited from Instance: Show Hide

bool

Archivable

Determines if an Instance can be cloned using /Instance/Clone or saved to file.
string

ClassName

[ReadOnly] [NotReplicated]

A read-only string representing the class this Instance belongs to
int

DataCost

[Hidden] [ReadOnly] [NotReplicated] [Deprecated]

The cost of saving the instance using data persistence.
string

Name

A non-unique identifier of the Instance
Instance

Parent

[NotReplicated]

Determines the hierarchical parent of the Instance
bool

RobloxLocked

[Hidden]

A deprecated property that used to protect CoreGui objects
bool

archivable

[Hidden] [NotReplicated] [Deprecated]
string

className

[ReadOnly] [NotReplicated] [Deprecated]

Functions

void

AdjustSpeed ( float speed )

This function changes the AnimationTrack/Speed of an animation. A positive value for speed plays the animation forward, a negative one plays it backwards, and 0 pauses it.
void

AdjustWeight ( float weight , float fadeTime )

Changes the weight of an animation, with the optional fadeTime parameter determining how long it takes for AnimationTrack/WeightCurrent to reach AnimationTrack/WeightTarget.
RBXScriptSignal

GetMarkerReachedSignal ( string name )

This function returns an DataType/RBXScriptSignal|event that fires when a specified KeyframeMarker has been hit in an Animation|animation
double

GetTimeOfKeyframe ( string keyframeName )

Returns the time position of the first Keyframe of the given name in an AnimationTrack.
void

Play ( float fadeTime , float weight , float speed )

Plays the AnimationTrack. Once called an AnimationTrack will play with the specified fadeTime, weight and speed.
void

Stop ( float fadeTime )

Stops the AnimationTrack. Once called playback of the AnimationTrack will stop and the weight of the animation will move towards zero over a length of time specified by the optional fadeTime parameter.

Inherited from Instance: Show Hide

void

ClearAllChildren ( )

This function destroys all of an Instance’s children.
Instance

Clone ( )

Create a copy of an object and all its descendants, ignoring objects that are not Instance/Archivable|Archivable
void

Destroy ( )

Sets the Instance/Parent property to nil, locks the Instance/Parent property, disconnects all connections and calls Destroy on all children.
Instance

FindFirstAncestor ( string name )

Returns the first ancestor of the Instance whose Instance/Name is equal to the given name.
Instance

FindFirstAncestorOfClass ( string className )

Returns the first ancestor of the Instance whose Instance/ClassName is equal to the given className.
Instance

FindFirstAncestorWhichIsA ( string className )

Returns the first ancestor of the Instance for whom Instance/IsA returns true for the given className.
Instance

FindFirstChild ( string name , bool recursive )

Returns the first child of the Instance found with the given name.
Instance

FindFirstChildOfClass ( string className )

Returns the first child of the Instance whose Instance/ClassName|ClassName is equal to the given className.
Instance

FindFirstChildWhichIsA ( string className , bool recursive )

Returns the first child of the Instance for whom Instance/IsA returns true for the given className.
Instance

FindFirstDescendant ( string name )

Actor

GetActor ( )

Variant

GetAttribute ( string attribute )

Returns the attribute which has been assigned to the given name
RBXScriptSignal

GetAttributeChangedSignal ( string attribute )

Returns an event that fires when the given attribute changes
Dictionary

GetAttributes ( )

Returns a dictionary of string → variant pairs for each of the Instance|Instance’s attributes
Objects

GetChildren ( )

Returns an array containing all of the Instance’s children.
string

GetDebugId ( int scopeLength )

[NotBrowsable]

Returns a coded string of the Instances DebugId used internally by Roblox.
Array

GetDescendants ( )

[CustomLuaState]

Returns an array containing all of the descendants of the instance
string

GetFullName ( )

Returns a string describing the Instance’s ancestry.
RBXScriptSignal

GetPropertyChangedSignal ( string property )

Get an event that fires when a given property of an object changes.
bool

IsA ( string className )

[CustomLuaState]

Returns true if an Instance’s class matches or inherits from a given class
bool

IsAncestorOf ( Instance descendant )

Returns true if an Instance is an ancestor of the given descendant.
bool

IsDescendantOf ( Instance ancestor )

Returns true if an Instance is a descendant of the given ancestor.
void

Remove ( )

[Deprecated]

Sets the object’s Parent to nil, and does the same for all its descendants.
void

SetAttribute ( string attribute , Variant value )

Sets the attribute with the given name to the given value
Instance

WaitForChild ( string childName , double timeOut )

[CustomLuaState] [CanYield]

Returns the child of the Instance with the given name. If the child does not exist, it will yield the current thread until it does.
Objects

children ( )

[Deprecated]

Returns an array of the object’s children.
Instance

clone ( )

[Deprecated]
void

destroy ( )

[Deprecated]
Instance

findFirstChild ( string name , bool recursive )

[Deprecated]
Objects

getChildren ( )

[Deprecated]
bool

isA ( string className )

[Deprecated] [CustomLuaState]
bool

isDescendantOf ( Instance ancestor )

[Deprecated]
void

remove ( )

[Deprecated]

Events

RBXScriptSignal

DidLoop ( )

This event fires when an AnimationTrack loops on the next update following the end of the previous animation loop.
RBXScriptSignal

KeyframeReached ( string keyframeName )

Fires every time playback of an AnimationTrack reaches a Keyframe that does not have the default name - “Keyframe”
RBXScriptSignal

Stopped ( )

Fires whenever the AnimationTrack finishes playing.

Inherited from Instance: Show Hide

RBXScriptSignal

AncestryChanged ( Instance child , Instance parent )

Fires when the Instance/Parent property of the object or one of its ancestors is changed.
RBXScriptSignal

AttributeChanged ( string attribute )

Fires whenever an attribute is changed on the Instance
RBXScriptSignal

Changed ( string property )

Fired immediately after a property of an object changes.
RBXScriptSignal

ChildAdded ( Instance child )

Fires when an object is parented to this Instance.
RBXScriptSignal

ChildRemoved ( Instance child )

Fires when a child is removed from this Instance.
RBXScriptSignal

DescendantAdded ( Instance descendant )

Fires when a descendant is added to the Instance
RBXScriptSignal

DescendantRemoving ( Instance descendant )

Fires immediately before a descendant of the Instance is removed.
RBXScriptSignal

childAdded ( Instance child )

[Deprecated]

Code Samples

Animation Creation

This sample creates an Animation, with an AnimationId. It then creates an AnimationTrack by loading the Animation onto a character’s Humanoid, before playing it.

local Players = game:GetService("Players")

local player = Players:FindFirstChild("Builderman")

local character = player.Character 
local humanoid = character:FindFirstChild("Humanoid")

local animation = Instance.new("Animation")
animation.AnimationId = "http://www.roblox.com/asset/?id=507771019" -- Roblox dance emote

local animationTrack = humanoid:LoadAnimation(animation)
animationTrack:Play()
AnimationController Animator