cellular-automata/lib/service/engine_service.dart

import 'package:rules_of_living/src/Engine.dart';

class EngineService {
  Engine _uncachedEngineAccess;

  Engine get engine => _uncachedEngineAccess ?? _setCachedAndReturn(Engine());
  void set engine(Engine newEngine) {
    _uncachedEngineAccess = newEngine;
  }

  Engine _setCachedAndReturn(Engine newEngine) {
    engine = newEngine;
    return newEngine;
  }

  void run() {
    engine.running = true;
  }

  void stop() {
    engine.running = false;
  }

  void toggleRunning() {
    engine.running = !engine.running;
  }

  void step() {
    engine.step();
  }

  void reset() {
    engine.reset();
  }

  void addRandomPattern() {
    engine.running = false;
    engine.addPattern();
  }

  void clear() {
    engine.clear();
  }

  bool get isRunning => engine.running;
}