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Small fixes and nits to make null-safe simpler (#686)

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This commit is contained in:
Luan Nico
2021-02-26 09:45:50 -05:00
committed by GitHub
parent 09631a23a5
commit f6db096ac6
20 changed files with 41 additions and 62 deletions
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10
doc/examples/particles/lib/main.dart
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@@ -37,17 +37,14 @@ class MyGame extends BaseGame {
/// Defines the lifespan of all the particles in these examples
final sceneDuration = const Duration(seconds: 1);
Vector2 cellSize;
Vector2 halfCellSize;
Vector2 get cellSize => size / gridSize;
Vector2 get halfCellSize => cellSize / 2;
@override
Future<void> onLoad() async {
await images.load('zap.png');
await images.load('boom3.png');
cellSize = size / gridSize;
halfCellSize = cellSize * .5;
// Spawn new particles every second
Timer.periodic(sceneDuration, (_) => spawnParticles());
}
@@ -87,8 +84,7 @@ class MyGame extends BaseGame {
final particle = particles.removeLast();
final col = particles.length % gridSize;
final row = (particles.length ~/ gridSize).toDouble();
final cellCenter =
(cellSize.clone()..multiply(Vector2(col, row))) + (cellSize * .5);
final cellCenter = (cellSize..multiply(Vector2(col, row))) + halfCellSize;
add(
// Bind all the particles to a [Component] update