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https://github.com/flame-engine/flame.git
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2fd84c846f
Update flame_noise to use the latest version of fast_noise, basically replacing the Perlin-specific effect controller with a generic `NoiseEffectController` that can take in any noise class (leveraging the new Noise2 interface). Just update from `PerlinNoiseEffectController` to `NoiseEffectController` and provide the noise/parameters you want directly into the `noise` field. --------- Co-authored-by: Lukas Klingsbo <me@lukas.fyi>
54 lines
1.4 KiB
Dart
54 lines
1.4 KiB
Dart
import 'package:flame_noise/flame_noise.dart';
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import 'package:flame_test/flame_test.dart';
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import 'package:flutter/animation.dart';
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import 'package:test/test.dart';
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void main() {
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group('PerlinNoiseEffectController', () {
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test('general properties', () {
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final ec = NoiseEffectController(
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duration: 1,
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noise: PerlinNoise(frequency: 12),
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);
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expect(ec.duration, 1.0);
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expect(ec.taperingCurve, Curves.easeInOutCubic);
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expect(ec.started, true);
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expect(ec.completed, false);
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expect(ec.progress, 0);
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expect(ec.isRandom, false);
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});
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test('progression', () {
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final ec = NoiseEffectController(
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duration: 1,
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noise: PerlinNoise(frequency: 0.05),
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);
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final observed = <double>[];
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for (var t = 0.0; t < 1.0; t += 0.1) {
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observed.add(ec.progress);
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ec.advance(0.1);
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}
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expect(observed, [
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0.051042312500000006,
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0.04563924284681871,
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0.03940642509655703,
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0.03206554217595054,
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0.02339568569800122,
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0.013401536786893568,
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0.005727844335713328,
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0.002079860116340368,
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0.000573751223192571,
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0.00008544214797850498,
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3.6806334242205264e-9,
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]);
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});
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test('errors', () {
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expect(
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() => NoiseEffectController(duration: -1),
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failsAssert('Duration cannot be negative: -1.0'),
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);
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});
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});
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}
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