Animate Shadow Clones

Create a fading shadow clone trail.

Authors and contributors to this extension: Entropy, VictrisGames, fuzzy, D8H.

Create a fading shadow clone trail.

This extension can be used to:

Make an object look faster, such as during a speed powerup.
Give a 3D-like feel to a character
Implement unique time-based elements, like teleporting a character back to a previous location
Simulate the movement of a caterpillar or slinky
Recreate games like snake or tron

These object variables are provided to manage the shadow clones:

ShadowCloneOrder: Shadow clone identifier, where 1 is the shadow clone closest to the primary object

Notes:

For shadow clones to work, this action must be run every frame.
The ShadowCloneObject cannot be the PrimaryObject, but it can be a duplicate object.
For animations to work, the PrimaryObject and ShadowCloneObject must use the same animation numbers.

Watch this tutorial video to see examples of how to use this extension.

Tip

Learn how to install new extensions by following a step-by-step guide.

Shadow clone emitter

Create a fading shadow clone trail.

Behavior properties

Number of clones (🔢 Number). Default value is 5.
Frames gap (🔢 Number). Default value is 8.
Match object angle (🔘 Boolean). Default value is true.
Match object animation (🔘 Boolean). Default value is true.
Match object animation (🔘 Boolean). Default value is true.
Match object horizontal flip (🔘 Boolean). Default value is true.
Match object X scale (🔘 Boolean). Default value is true.
Match object Y scale (🔘 Boolean). Default value is true.
Match object vertical flip (🔘 Boolean). Default value is true.
Last clone opacity (🔢 Number). Values from 0 to 1. Default value is 0.
First clone opacity (🔢 Number). Values from 0 to 1. Default value is 0.5.
Last clone scale (🔢 Number). Values from 0 to 1. Default value is 1.

See internal technical details

This behavior must be used on an object also having a behavior with type "AnimatableCapability::AnimatableBehavior". This is stored on property Animation.

Number of clones is stored as ClonesCount (Number). Default value is 5.

This behavior must be used on an object also having a behavior with type "FlippableCapability::FlippableBehavior". This is stored on property Flippable.
Frames gap is stored as FramesGap (Number). Default value is 8.
Match object angle is stored as MatchAngle (Boolean). Default value is true.
Match object animation is stored as MatchAnimation (Boolean). Default value is true.
Match object animation is stored as MatchAnimationFrame (Boolean). Default value is true.
Match object horizontal flip is stored as MatchHorizontalFlip (Boolean). Default value is true.
Match object X scale is stored as MatchScaleX (Boolean). Default value is true.
Match object Y scale is stored as MatchScaleY (Boolean). Default value is true.
Match object vertical flip is stored as MatchVerticalFlip (Boolean). Default value is true.

This behavior must be used on an object also having a behavior with type "OpacityCapability::OpacityBehavior". This is stored on property Opacity.
Last clone opacity is stored as OpacityEnd (Number). Default value is 0.
First clone opacity is stored as OpacityStart (Number). Default value is 0.5.

This behavior must be used on an object also having a behavior with type "ScalableCapability::ScalableBehavior". This is stored on property Scale.
Last clone scale is stored as ScaleEnd (Number). Default value is 1.

Behavior actions

Animate shadow clones
Create and animate a fading shadow clone trail. This action must be called every frame.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2 (👾 Object): Shadow clone Must be a different object that the one with emitter behavior.
Parameter 3 (🧩 Behavior): Scalable objects
Parameter 4 (🧩 Behavior): Flippable objects
Parameter 5 (🧩 Behavior): Objects with opacity
Parameter 6 (🧩 Behavior): Objects with animations

Technical note: parameter 7 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::AnimateClones.

Delete shadow clones
Delete shadow clone objects that are linked to a primary object.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2 (👾 Object): Shadow clone

Technical note: parameter 3 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::DeleteClones.

Number of clones
Change the number of clones following the object.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Operator
Parameter 3 (🔢 Number): Value

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::SetClonesCount.

Frames gap
Change the number of frames between 2 clones.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Operator
Parameter 3 (🔢 Number): Value

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::SetFramesGap.

Last clone opacity
Change the last clone opacity (from 0 to 1).

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Operator
Parameter 3 (🔢 Number): Value

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::SetOpacityEnd.

First clone opacity
Change the first clone opacity (from 0 to 1).

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Operator
Parameter 3 (🔢 Number): Value

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::SetOpacityStart.

Last clone scale
Change the last clone scale (from 0 to 1).

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Operator
Parameter 3 (🔢 Number): Value

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::SetScaleEnd.

Behavior conditions

Number of clones
Compare the number of clones following the object.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Relational operator
Parameter 3 (🔢 Number): Value to compare

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::ClonesCount.

Frames gap
Compare the number of frames between 2 clones.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Relational operator
Parameter 3 (🔢 Number): Value to compare

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::FramesGap.

Last clone opacity
Compare the last clone opacity (from 0 to 1).

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Relational operator
Parameter 3 (🔢 Number): Value to compare

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::OpacityEnd.

First clone opacity
Compare the first clone opacity (from 0 to 1).

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Relational operator
Parameter 3 (🔢 Number): Value to compare

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::OpacityStart.

Last clone scale
Compare the last clone scale (from 0 to 1).

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2: 🟰 Relational operator
Parameter 3 (🔢 Number): Value to compare

Technical note: parameter 4 is an internal parameter handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is ShadowClones::ShadowCloneEmitter::ScaleEnd.

Behavior expressions

Expression	Description
`Object.ShadowCloneEmitter::ClonesCount()`	Return the number of clones following the object.
`Object.ShadowCloneEmitter::FramesGap()`	Return the number of frames between 2 clones.
`Object.ShadowCloneEmitter::OpacityEnd()`	Return the last clone opacity (from 0 to 1).
`Object.ShadowCloneEmitter::OpacityStart()`	Return the first clone opacity (from 0 to 1).
`Object.ShadowCloneEmitter::ScaleEnd()`	Return the last clone scale (from 0 to 1).

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