Your First Flutter Flame Game

Mar 6 2024 · Dart 3, Flutter 3.10.1, Android Studio 2021.3.1 or higher, Visual Studo Code 1.7.4 or higher

Part 2: Effects & User Input

12. Challenge: Add Movement to Saucer

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Previous episode: 11. Rotate the Spaceship Next episode: 13. Play Sound Effects

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Use what you’ve learned during this course so far to define the movement of Saucer. Add a new vector for the velocity at which the component will move. Then, update the component’s position so it moves to the right.

Solution

Saucer

Start by opening Saucer and adding a new property called velocity.

final Vector2 velocity = Vector2.zero();
@override
void update(double dt) {
  super.update(dt);
}
velocity.x = GameConstants.saucerSpeed;
position += velocity * dt;
if (position.x + saucerWidth / 2 < 0 ||
    position.x - saucerWidth / 2 > GameConstants.cameraWidth) {
  removeFromParent();
}