flame/docs/effects.md

MoveEffect

Applied to PositionComponents, this effect can be used to move the component to a new position, using an animation curve.

Usage example:

import 'package:flame/effects/effects.dart';

// Square is a PositionComponent
square.addEffect(MoveEffect(
  destination: Position(200, 200),
  speed: 250.0,
  curve: Curves.bounceInOut,
));

ScaleEffect

Applied to PositionComponents, this effect can be used to change the width and height of the component, using an animation curve.

Usage example:

import 'package:flame/effects/effects.dart';

// Square is a PositionComponent
square.addEffect(ScaleEffect(
  size: Size(300, 300),
  speed: 250.0,
  curve: Curves.bounceInOut,
));