Flash object

Make an object flash visibility (blink), color tint, object effect, or opacity (fade).

Authors and contributors to this experimental extension: 4ian, Entropy, VictrisGames.

Make a 2D object flash for a period of time so that it alternates between two different states. Includes the ability to flash visibility (blink), color tint, object effect, or opacity (fade).

After adding a behavior to an object, you trigger the effect by using the Flash action.

This can be used to:

Let players know they are invincible after being hit
Catch player attention on the interface (for instance a "press start" text)

Tip

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

Flash visibility (blink)

Make the object flash (blink) for a period of time so it alternates between visible and invisible.

Behavior properties

**Half period ** (🔢 Number, Duration). Time that the object is invisible. Default value is 0.1.

See internal technical details

**Half period ** is stored as HalfPeriodTime (Number). Unit is Second. Default value is 0.1.

Behavior actions

Flash visibility (blink)
Make an object flash (blink) visibility for a period of time.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2 (🔢 Number): Duration of the flashing, in seconds Use "0" to keep flashing until stopped.

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

Technical note: this action internal type (in GDevelop JSON) is Flash::Flash::Flash.

Half period
Change the half period of the object (time the object is invisible).

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 Flash::Flash::SetHalfPeriodTime.

Stop flashing visibility (blink)
Stop flashing visibility (blink) of an object.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior

Technical note: parameter 2 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is Flash::Flash::Stop.

Behavior conditions

Half period
Compare the half period of the object (time the object is invisible).

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 Flash::Flash::HalfPeriodTime.

Is object flashing visibility
Check if an object is flashing visibility.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior

Technical note: parameter 2 is an internal parameter handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is Flash::Flash::IsFlashing.

Behavior expressions

Expression	Description
`Object.Flash::HalfPeriodTime()`	Return the half period of the object (time the object is invisible).

Flash color tint

Make an object flash a color tint for a period of time.

Behavior properties

Half period (🔢 Number, Duration). Time between flashes. Default value is 0.1.

See internal technical details

Half period is stored as HalfPeriodTime (Number). Unit is Second. Default value is 0.1.

Behavior actions

Flash a color tint
Make an object flash a color tint for a period of time.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2 (🔢 Number): Duration of the flashing, in seconds Use "0" to keep flashing until stopped.
Parameter 3 (🎨 Color): Color tint

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

Technical note: this action internal type (in GDevelop JSON) is Flash::FlashColor::Flash.

Half period
Change the half period (time between flashes) of 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 Flash::FlashColor::SetHalfPeriodTime.

Stop flashing color tint
Stop flashing a color tint on an object.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior

Technical note: parameter 2 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is Flash::FlashColor::Stop.

Behavior conditions

Half period
Compare the half period (time between flashes) of 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 Flash::FlashColor::HalfPeriodTime.

Is object flashing a color tint
Check if an object is flashing a color tint.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior

Technical note: parameter 2 is an internal parameter handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is Flash::FlashColor::IsFlashing.

Behavior expressions

Expression	Description
`Object.FlashColor::HalfPeriodTime()`	Return the half period (time between flashes) of the object.

Flash effect

Make the object flash an effect for a period of time.

Behavior properties

Half period (🔢 Number, Duration). Time between flashes. Default value is 0.1.

See internal technical details

This behavior must be used on an object also having a behavior with type "EffectCapability::EffectBehavior". This is stored on property Effect.

Half period is stored as HalfPeriodTime (Number). Unit is Second. Default value is 0.1.

Behavior actions

Flash an effect
Make an object flash an effect for a period of time.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2 (🔢 Number): Duration of the flashing, in seconds Use "0" to keep flashing until stopped.
Parameter 3: 🔤 Object Effect Name (String)

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

Technical note: this action internal type (in GDevelop JSON) is Flash::FlashEffect::Flash.

Half period
Change the half period (time between flashes) of 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 Flash::FlashEffect::SetHalfPeriodTime.

Stop flashing an effect
Stop flashing an effect of an object.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior

Technical note: parameter 2 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is Flash::FlashEffect::Stop.

Behavior conditions

Half period
Compare the half period (time between flashes) of 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 Flash::FlashEffect::HalfPeriodTime.

Is object flashing an effect
Check if an object is flashing an effect.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior

Technical note: parameter 2 is an internal parameter handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is Flash::FlashEffect::IsFlashing.

Behavior expressions

Expression	Description
`Object.FlashEffect::HalfPeriodTime()`	Return the half period (time between flashes) of the object.

Flash opacity smothly (fade)

Flash opacity smoothly (fade) in a repeating loop.

Behavior properties

Half period (🔢 Number, Duration). Time between flashes. Default value is 0.1.

See internal technical details

Half period is stored as HalfPeriodTime (Number). Unit is Second. Default value is 0.1.

This behavior must be used on an object also having a behavior with type "OpacityCapability::OpacityBehavior". This is stored on property Opacity.

This behavior must be used on an object also having a behavior with type "Tween::TweenBehavior". This is stored on property TweenBehavior.

Behavior actions

Flash the opacity (fade)
Make an object flash opacity smoothly (fade) in a repeating loop.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior
Parameter 2 (🧩 Behavior): Tween behavior (required)
Parameter 3 (🔢 Number): Duration of the flashing, in seconds Use "0" to keep flashing until stopped.
Parameter 4 (🔢 Number): Target opacity

Technical note: parameter 5 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is Flash::FlashOpacity::Flash.

Half period
Change the half period (time between flashes) of 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 Flash::FlashOpacity::SetHalfPeriodTime.

Stop flashing opacity
Stop flashing opacity of an object.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior

Technical note: parameter 2 is an internal parameter handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is Flash::FlashOpacity::Stop.

Behavior conditions

Half period
Compare the half period (time between flashes) of 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 Flash::FlashOpacity::HalfPeriodTime.

Is object flashing opacity
Check if an object is flashing opacity.

See parameters & details

Parameter 0: 👾 Object
Parameter 1: 🧩 Behavior

Technical note: parameter 2 is an internal parameter handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is Flash::FlashOpacity::IsFlashing.

Behavior expressions

Expression	Description
`Object.FlashOpacity::HalfPeriodTime()`	Return the half period (time between flashes) of the object.

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