Lightweight object used for general-purpose animation via script, using [Tweener]s. Tweens are mostly useful for animations requiring a numerical property to be interpolated over a range of values. The name [i]tween[/i] comes from [i]in-betweening[/i], an animation technique where you specify [i]keyframes[/i] and the computer interpolates the frames that appear between them. [Tween] is more suited than [AnimationPlayer] for animations where you don't know the final values in advance. For example, interpolating a dynamically-chosen camera zoom value is best done with a [Tween]; it would be difficult to do the same thing with an [AnimationPlayer] node. Tweens are also more light-weight than [AnimationPlayer], so they are very much suited for simple animations or general tasks that don't require visual tweaking provided by the editor. They can be used in a fire-and-forget manner for some logic that normally would be done by code. You can e.g. make something shoot periodically by using a looped [CallbackTweener] with a delay. A [Tween] can be created by using either [method SceneTree.create_tween] or [method Node.create_tween]. [Tween]s created manually (i.e. by using [code]Tween.new()[/code]) are invalid and can't be used for tweening values. A [Tween] animation is composed of a sequence of [Tweener]s, which by default are executed one after another. You can create a sequence by appending [Tweener]s to the [Tween]. Animating something with a [Tweener] is called tweening. Example tweening sequence looks like this: [codeblock] var tween = get_tree().create_tween() tween.tween_property($Sprite, "modulate", Color.red, 1) tween.tween_property($Sprite, "scale", Vector2(), 1) tween.tween_callback($Sprite.queue_free) [/codeblock] This sequence will make the [code]$Sprite[/code] node turn red, then shrink and finally the [method Node.queue_free] is called to remove the sprite. See methods [method tween_property], [method tween_interval], [method tween_callback] and [method tween_method] for more usage information. When a [Tweener] is created with one of the [code]tween_*[/code] methods, a chained method call can be used to tweak the properties of this [Tweener]. For example, if you want to set different transition type in the above example, you can do: [codeblock] var tween = get_tree().create_tween() tween.tween_property($Sprite, "modulate", Color.red, 1).set_trans(Tween.TRANS_SINE) tween.tween_property($Sprite, "scale", Vector2(), 1).set_trans(Tween.TRANS_BOUNCE) tween.tween_callback($Sprite.queue_free) [/codeblock] Most of the [Tween] methods can be chained this way too. In this example the [Tween] is bound and have set a default transition: [codeblock] var tween = get_tree().create_tween().bind_node(self).set_trans(Tween.TRANS_ELASTIC) tween.tween_property($Sprite, "modulate", Color.red, 1) tween.tween_property($Sprite, "scale", Vector2(), 1) tween.tween_callback($Sprite.queue_free) [/codeblock] Another interesting use for [Tween]s is animating arbitrary set of objects: [codeblock] var tween = create_tween() for sprite in get_children(): tween.tween_property(sprite, "position", Vector2(), 1) [/codeblock] In the example above, all children of a node are moved one after another to position (0, 0). Some [Tweener]s use transitions and eases. The first accepts an [enum TransitionType] constant, and refers to the way the timing of the animation is handled (see [url=https://easings.net/]easings.net[/url] for some examples). The second accepts an [enum EaseType] constant, and controls where the [code]trans_type[/code] is applied to the interpolation (in the beginning, the end, or both). If you don't know which transition and easing to pick, you can try different [enum TransitionType] constants with [constant EASE_IN_OUT], and use the one that looks best. [url=https://raw.githubusercontent.com/godotengine/godot-docs/master/img/tween_cheatsheet.png]Tween easing and transition types cheatsheet[/url] [b]Note:[/b] All [Tween]s will automatically start by default. To prevent a [Tween] from autostarting, you can call [method stop] immediately after it was created. Binds this [Tween] with the given [code]node[/code]. [Tween]s are processed directly by the [SceneTree], so they run independently of the animated nodes. When you bind a [Node] with the [Tween], the [Tween] will halt the animation when the object is not inside tree and the [Tween] will be automatically killed when the bound object is freed. Also [constant TWEEN_PAUSE_BOUND] will make the pausing behavior dependent on the bound node. For a shorter way to create and bind a [Tween], you can use [method Node.create_tween]. Used to chain two [Tweener]s after [method set_parallel] is called with [code]true[/code]. [codeblock] var tween = create_tween().set_parallel(true) tween.tween_property(...) tween.tween_property(...) # Will run parallelly with above. tween.chain().tween_property(...) # Will run after two above are finished. [/codeblock] Processes the [Tween] by given [code]delta[/code] value, in seconds. Mostly useful when the [Tween] is paused, for controlling it manually. Can also be used to end the [Tween] animation immediately, by using [code]delta[/code] longer than the whole duration. Returns [code]true[/code] if the [Tween] still has [Tweener]s that haven't finished. [b]Note:[/b] The [Tween] will become invalid after finished, but you can call [method stop] after the step, to keep it and reset. Returns the total time in seconds the [Tween] has been animating (i.e. time since it started, not counting pauses etc.). The time is affected by [method set_speed_scale] and [method stop] will reset it to [code]0[/code]. [b]Note:[/code] As it results from accumulating frame deltas, the time returned after the [Tween] has finished animating will be slightly greater than the actual [Tween] duration. This method can be used for manual interpolation of a value, when you don't want [Tween] to do animating for you. It's similar to [method @GlobalScope.lerp], but with support for custom transition and easing. [code]initial_value[/code] is the starting value of the interpolation. [code]delta_value[/code] is the change of the value in the interpolation, i.e. it's equal to [code]final_value - initial_value[/code]. [code]elapsed_time[/code] is the time in seconds that passed after the interpolation started and it's used to control the position of the interpolation. E.g. when it's equal to half of the [code]duration[/code], the interpolated value will be halfway between initial and final values. This value can also be greater than [code]duration[/code] or lower than 0, which will extrapolate the value. [code]duration[/code] is the total time of the interpolation. [b]Note:[/b] If [code]duration[/code] is equal to [code]0[/code], the method will always return the final value, regardless of [code]elapsed_time[/code] provided. Returns whether the [Tween] is currently running, i.e. it wasn't paused and it's not finished. Returns whether the [Tween] is valid. A valid [Tween] is a [Tween] contained by the scene tree (i.e. the array from [method SceneTree.get_processed_tweens] will contain this [Tween]). [Tween] might become invalid when it has finished tweening or was killed, also when created with [code]Tween.new()[/code]. Invalid [Tween] can't have [Tweener]s appended, because it can't animate them. Aborts all tweening operations and invalidates the [Tween]. Makes the next [Tweener] run parallelly to the previous one. Example: [codeblock] var tween = create_tween() tween.tween_property(...) tween.parallel().tween_property(...) tween.parallel().tween_property(...) [/codeblock] All [Tweener]s in the example will run at the same time. You can make the [Tween] parallel by default by using [method set_parallel]. Pauses the tweening. The animation can be resumed by using [method play]. Resumes a paused or stopped [Tween]. Sets the default ease type for [PropertyTweener]s and [MethodTweener]s animated by this [Tween]. Sets the number of times the tweening sequence will be repeated, i.e. [code]set_loops(2)[/code] will run the animation twice. Calling this method without arguments will make the [Tween] run infinitely, until it is either killed by [method kill] or by freeing bound node, or all the animated objects have been freed (which makes further animation impossible). [b]Warning:[/b] Make sure to always add some duration/delay when using infinite loops. 0-duration looped animations (e.g. single [CallbackTweener] with no delay or [PropertyTweener] with invalid node) are equivalent to infinite [code]while[/code] loops and will freeze your game. If a [Tween]'s lifetime depends on some node, always use [method bind_node]. If [code]parallel[/code] is [code]true[/code], the [Tweener]s appended after this method will by default run simultaneously, as opposed to sequentially. Determines the behavior of the [Tween] when the [SceneTree] is paused. Check [enum TweenPauseMode] for options. Default value is [constant TWEEN_PAUSE_BOUND]. Determines whether the [Tween] should run during idle frame (see [method Node._process]) or physics frame (see [method Node._physics_process]. Default value is [constant TWEEN_PROCESS_IDLE]. Scales the speed of tweening. This affects all [Tweener]s and their delays. Sets the default transition type for [PropertyTweener]s and [MethodTweener]s animated by this [Tween]. Stops the tweening and resets the [Tween] to its initial state. This will not remove any appended [Tweener]s. Creates and appends a [CallbackTweener]. This method can be used to call an arbitrary method in any object. Use [method Callable.bind] to bind additional arguments for the call. Example: object that keeps shooting every 1 second. [codeblock] var tween = get_tree().create_tween().set_loops() tween.tween_callback(shoot).set_delay(1) [/codeblock] Example: turning a sprite red and then blue, with 2 second delay. [codeblock] var tween = get_tree().create_tween() tween.tween_callback($Sprite.set_modulate.bind(Color.red)).set_delay(2) tween.tween_callback($Sprite.set_modulate.bind(Color.blue)).set_delay(2) [/codeblock] Creates and appends an [IntervalTweener]. This method can be used to create delays in the tween animation, as an alternative for using the delay in other [Tweener]s or when there's no animation (in which case the [Tween] acts as a timer). [code]time[/code] is the length of the interval, in seconds. Example: creating an interval in code execution. [codeblock] # ... some code await create_tween().tween_interval(2).finished # ... more code [/codeblock] Example: creating an object that moves back and forth and jumps every few seconds. [codeblock] var tween = create_tween().set_loops() tween.tween_property("position:x", 200, 1).as_relative() tween.tween_callback(jump) tween.tween_interval(2) tween.tween_property("position:x", -200, 1).as_relative() tween.tween_callback(jump) tween.tween_interval(2) [/codeblock] Creates and appends a [MethodTweener]. This method is similar to a combination of [method tween_callback] and [method tween_property]. It calls a method over time with a tweened value provided as an argument. The value is tweened between [code]from[/code] and [code]to[/code] over the time specified by [code]duration[/code], in seconds. Use [method Callable.bind] to bind additional arguments for the call. You can use [method MethodTweener.set_ease] and [method MethodTweener.set_trans] to tweak the easing and transition of the value or [method MethodTweener.set_delay] to delay the tweening. Example: making a 3D object look from one point to another point. [codeblock] var tween = create_tween() tween.tween_method(look_at.bind(Vector3.UP), Vector3(-1, 0, -1), Vector3(1, 0, -1), 1) # The look_at() method takes up vector as second argument. [/codeblock] Example: setting a text of a [Label], using an intermediate method and after a delay. [codeblock] func _ready(): var tween = create_tween() tween.tween_method(set_label_text, 0, 10, 1).set_delay(1) func set_label_text(value: int): $Label.text = "Counting " + str(value) [/codeblock] Creates and appends a [PropertyTweener]. This method tweens a [code]property[/code] of an [code]object[/code] between an initial value and [code]final_val[/code] in a span of time equal to [code]duration[/code], in seconds. The initial value by default is a value at the time the tweening of the [PropertyTweener] start. For example: [codeblock] var tween = create_tween() tween.tween_property($Sprite, "position", Vector2(100, 200) tween.tween_property($Sprite, "position", Vector2(200, 300) [/codeblock] will move the sprite to position (100, 200) and then to (200, 300). If you use [method PropertyTweener.from] or [method PropertyTweener.from_current], the starting position will be overwritten by the given value instead. See other methods in [PropertyTweener] to see how the tweening can be tweaked further. [b]Note:[/b] You can find the correct property name by hovering over the property in the Inspector. You can also provide the components of a property directly by using [code]"property:component"[/code] (eg. [code]position:x[/code]), where it would only apply to that particular component. Example: moving object twice from the same position, with different transition types. [codeblock] var tween = create_tween() tween.tween_property($Sprite, "position", Vector2.RIGHT * 300).as_relative().set_trans(Tween.TRANS_SINE) tween.tween_property($Sprite, "position", Vector2.RIGHT * 300).as_relative().from_current().set_trans(Tween.TRANS_EXPO) [/codeblock] Emitted when the [Tween] has finished all tweening. Never emitted when the [Tween] is set to infinite looping (see [method set_loops]). [b]Note:[/b] The [Tween] is removed (invalidated) after this signal is emitted, but it doesn't happen immediately, but on the next processing frame. Calling [method stop] inside the signal callback will preserve the [Tween]. Emitted when a full loop is complete (see [method set_loops]), providing the loop index. This signal is not emitted after final loop, use [signal finished] instead for this case. Emitted when one step of the [Tween] is complete, providing the step index. One step is either a single [Tweener] or a group of [Tweener]s running parallelly. The [Tween] updates during the physics frame. The [Tween] updates during the idle frame. If the [Tween] has a bound node, it will process when that node can process (see [member Node.process_mode]). Otherwise it's the same as [constant TWEEN_PAUSE_STOP]. If [SceneTree] is paused, the [Tween] will also pause. The [Tween] will process regardless of whether [SceneTree] is paused. The animation is interpolated linearly. The animation is interpolated using a sine function. The animation is interpolated with a quintic (to the power of 5) function. The animation is interpolated with a quartic (to the power of 4) function. The animation is interpolated with a quadratic (to the power of 2) function. The animation is interpolated with an exponential (to the power of x) function. The animation is interpolated with elasticity, wiggling around the edges. The animation is interpolated with a cubic (to the power of 3) function. The animation is interpolated with a function using square roots. The animation is interpolated by bouncing at the end. The animation is interpolated backing out at ends. The interpolation starts slowly and speeds up towards the end. The interpolation starts quickly and slows down towards the end. A combination of [constant EASE_IN] and [constant EASE_OUT]. The interpolation is slowest at both ends. A combination of [constant EASE_IN] and [constant EASE_OUT]. The interpolation is fastest at both ends.