Blends two animations linearly inside of an [AnimationNodeBlendTree]. A resource to add to an [AnimationNodeBlendTree]. Blends two animations linearly based on an amount value in the [code][0.0, 1.0][/code] range. https://docs.godotengine.org/en/3.4/tutorials/animation/animation_tree.html https://godotengine.org/asset-library/asset/125 https://godotengine.org/asset-library/asset/678 If [code]true[/code], sets the [code]optimization[/code] to [code]false[/code] when calling [method AnimationNode.blend_input], forcing the blended animations to update every frame.