SpriteFrames

public void AddAnimation(StringName anim);

Creates an empty named animation. The name must not exist; adding it again does not clear an existing clip. Then add frames and set FPS and loop mode.

public void AddFrame(StringName anim, Texture2D texture, float duration = 1f, int atPosition = -1);

Adds a frame texture to an existing clip. duration is a relative weight. A valid atPosition inserts before that frame; a negative position or one at least equal to the frame count appends.

public void Clear(StringName anim);

Removes all frames from the anim animation.

public void ClearAll();

Removes all animations. An empty default animation will be created.

public void DuplicateAnimation(StringName animFrom, StringName animTo);

Duplicates the animation anim_from to a new animation named anim_to. Fails if anim_to already exists, or if anim_from does not exist.

public bool GetAnimationLoop(StringName anim);

Obsolete check for the Linear mode specifically. Returns false for Pingpong even though it also loops. Use GetAnimationLoopMode for the full value.

public SpriteFrames.LoopMode GetAnimationLoopMode(StringName anim);

Reads a clip loop mode. It does not replace HasAnimation: a missing name reports an engine error and returns None.

public string[] GetAnimationNames();

Returns an array containing the names associated to each animation. Values are placed in alphabetical order.

public double GetAnimationSpeed(StringName anim);

Reads base FPS from the resource, excluding entity-specific SpeedScale and customSpeed.

public int GetFrameCount(StringName anim);

Returns the selected clip frame count. An existing empty clip has zero frames and does not play through Play.

public float GetFrameDuration(StringName anim, int idx);

Reads a relative frame weight. At nonzero speed, seconds equal duration / (FPS × abs(playingSpeed)); at zero speed the cursor does not advance.

public Texture2D GetFrameTexture(StringName anim, int idx);

Reads the selected frame texture. An AtlasTexture result holds a region rather than automatically extracting a new image detached from the atlas.

public bool HasAnimation(StringName anim);

Checks name existence in the library, not frame count or playback state.

public void RemoveAnimation(StringName anim);

Removes the anim animation.

public void RemoveFrame(StringName anim, int idx);

Removes the anim animation's frame idx.

public void RenameAnimation(StringName anim, StringName newname);

Changes the anim animation's name to newname.

public void SetAnimationLoop(StringName anim, bool loop);

Obsolete boolean method: true selects Linear and false selects None. It cannot select Pingpong. Use SetAnimationLoopMode for new code.

public void SetAnimationLoopMode(StringName anim, SpriteFrames.LoopMode loopMode);

Sets an existing clip loop mode through LoopMode. Prefer this method to obsolete SetAnimationLoop. It edits resource data rather than issuing playback to a specific sprite.

public void SetAnimationSpeed(StringName anim, double fps);

Sets base clip FPS. Zero is accepted and freezes advancement without changing sprite IsPlaying; negative values are rejected. Use AnimatedSprite2D multipliers for reverse playback.

public void SetFrame(StringName anim, int idx, Texture2D texture, float duration = 1f);

Sets the texture and the duration of the frame idx in the anim animation. duration specifies the relative duration, see SpriteFrames.GetFrameDuration for details.