What are the disadvantages of invoking $digest from external sources instead of within Angular framework?

I have been developing a game that relies solely on Angular for its user interface. The game has a loop that executes every second, and to ensure the UI stays synchronized, I am manually calling $digest from outside of Angular.

//Angular code snippet
angular
    .module('app')
    .factory('acp', acp);

acp.$inject = ['$rootScope', '$window'];

function acp($rootScope, $window){
    var service = $window.ACP = {
        heartBeat: heartBeat,
        rootScope: $rootScope
    };

    return service;

    function heartBeat(){
        $rootScope.$$phase || $rootScope.$digest();
    }
}

//Game code snippet
setInterval(function(){
    //perform game logic
    updateResources();
    window.ACP.heartBeat();
}.bind(this), 1000);

Is this approach acceptable for a basic front-end game? What alternatives do you suggest for communication between my Angular UI and the game code? Currently, I have another global variable that stores the game state, accessed by both Angular and the game code directly from the window object. While I understand the drawbacks of using globals, in the realm of game development, things can become a bit blurry. Any insights or recommendations would be greatly appreciated.

Answer №1

Why rely on setTimeout when Angular offers a convenient wrapper called $timeout to handle the digest cycle automatically?

When it comes to coordinating your game code with Angular UI, consider these suggestions:

  • Utilize factories or services for storing game state instead of using global variables
  • Explore the use of websockets to establish a connection between your frontend and backend without the need to constantly make API calls. Check out socket.io as a starting point
  • Consider using $rootScope as a last resort for storing values

Note: Instead of using setTimeout, try $interval for interval-based triggering. Evaluate all options mentioned above to determine the most suitable approach for your needs.

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