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Make objects orbit around a center object

Make objects orbit around a center object in a circular or elliptical shape.

Authors and contributors to this experimental extension: VictrisGames, VegeTato.

Run the actions on every frame to make the orbiting objects move. The extension will automatically create/delete orbiting objects to match the quantity specified. Use the delete function or set the quantity to 0 to remove all orbiting objects.

The elliptical orbit action can be used to create a 3D effect by changing the z-order of orbiting objects.

The customizable parameters include:

  • Center object
  • Orbiting object (must be different than the Center object)
  • Quantity of orbiting objects
  • Distance from the center object
  • Speed of the orbiting objects (in degrees per second). Use negative numbers to orbit counter-clockwise.
  • Speed to rotate each orbiting object (in degrees per second). Use negative numbers to rotate counter-clockwise.

Example uses:

  • Make shield objects around the player to protect from enemies
  • Weapons that can damage enemies when they collide
  • A visual indicator of ammo quantity or health points
  • Interesting animations of stacked objects that can function as a single entity
  • Visual cue for an active character power-up, such as invincibility

An example shows how to use this extension (open the project online).

Tip

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

Actions

Move objects in elliptical orbit around a center object
Move objects in elliptical orbit around a center object. Z-order is changed to make 3D effect.

See parameters
  • Parameter 1 (👾 Object): Center object
  • Parameter 2 (👾 Object): Orbiting object Cannot be the same object used for the Center object
  • Parameter 3 (🔢 Number): Quantity of orbiting objects
  • Parameter 4 (🔢 Number): Orbit speed (in degrees per second) Use negative numbers to orbit counter-clockwise
  • Parameter 5 (🔢 Number): Vertical distance from the center object (pixels)
  • Parameter 6 (🔢 Number): Angular speed (in degrees per second) Use negative numbers to rotate counter-clockwise
  • Parameter 7 (🔢 Number): Starting angle offset (in degrees)
  • Parameter 8 (❓ Yes or No): Reset locations of orbiting objects after quantity is reduced
  • Parameter 9 (🔢 Number): Horizontal distance from the center object (pixels)
  • Parameter 10 (🔤 String): Foreground Side (one of: "Top", "Bottom", "Left", "Right")

Technical note: parameters 0, 11 are internal parameters handled by GDevelop.

Move objects in orbit around a center object
Move objects in orbit around a center object.

See parameters
  • Parameter 1 (👾 Object): Center object
  • Parameter 2 (👾 Object): Orbiting object Cannot be the same object used for the Center object
  • Parameter 3 (🔢 Number): Quantity of orbiting objects
  • Parameter 4 (🔢 Number): Orbit speed (in degrees per second) Use negative numbers to orbit counter-clockwise
  • Parameter 5 (🔢 Number): Distance from the center object (in pixels)
  • Parameter 6 (🔢 Number): Angular speed (in degrees per second) Use negative numbers to rotate counter-clockwise
  • Parameter 7 (🔤 Layer name (String)): Layer that orbiting objects will be created on (base layer if empty)
  • Parameter 8 (🔢 Number): Z order of orbiting objects
  • Parameter 9 (🔢 Number): Starting angle offset (in degrees)
  • Parameter 10 (❓ Yes or No): Reset locations of orbiting objects after quantity is reduced

Technical note: parameters 0, 11 are internal parameters handled by GDevelop.

Delete orbiting objects that are linked to a center object
Delete orbiting objects that are linked to a center object.

See parameters
  • Parameter 1 (👾 Object): Center object
  • Parameter 2 (👾 Object): Orbiting object Cannot be the same object that was used for the Center object

Technical note: parameters 0, 3 are internal parameters handled by GDevelop.

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