cellular-automata/lib/service/configuration_service.dart

import 'dart:html' as html;
import 'dart:math';

import 'package:rules_of_living/service/engine_service.dart';
import 'package:rules_of_living/service/simulation_service.dart';

class ConfigurationService {
  final EngineService _engine;
  final SimulationService _sim;

  bool showGrid;

  int _simSpeed;

  ConfigurationService(this._engine, this._sim) {
    showGrid = false;
    simSpeed = 5;
  }

  /// Simulation Speed
  ///
  /// Sets the number of updates the simulation takes per second. Can range from
  /// 1 to arbitrarily high numbers (though setting it too high can potentially
  /// make the app brittle).
  int get simSpeed => _simSpeed;
  void set simSpeed(int val) {
    _simSpeed = val;
    //TODO make method in EngineService to respect Demeter
    _engine.engine.stepsPerSecond = simSpeed;
  }

  void set canvas(html.CanvasElement canvas) => _engine.engine.canvas = canvas;
  html.CanvasElement get canvas => _engine.engine.canvas;

  void toggleGrid() {
    showGrid = !showGrid;
  }

  void setGridSize({int x, int y}) {
    _sim.gridSize = Point(x ?? gridSize.x, y ?? gridSize.y);
  }

  Point<int> get gridSize => _sim.gridSize;
}